backport: re PR rtl-optimization/90026 (ICE: verify_flow_info failed (error: missing...

[gcc.git] / gcc / ChangeLog

2019-04-30  Jakub Jelinek  <jakub@redhat.com>

        Backported from mainline
        2019-04-12  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/90026
        * cfgcleanup.c (try_optimize_cfg): When removing empty bb with no
        successors, look for BARRIERs inside of the whole BB_FOOTER chain
        rather than just at the start of it.  If e->src BB_FOOTER is not NULL
        in cfglayout mode, use emit_barrier_after_bb.

        2019-04-11  Jakub Jelinek  <jakub@redhat.com>
        
        PR rtl-optimization/89965
        * dce.c (sp_based_mem_offset): New function.
        (find_call_stack_args): Use sp_based_mem_offset.

        2019-04-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/90010
        * gimple-ssa-sprintf.c (target_to_host): Fix handling of targstr
        with strlen in between hostsz-3 and hostsz-1 inclusive when no
        translation is needed, and when translation is needed, only append
        ... if the string length is hostsz or more bytes long.  Avoid using
        strncpy or strcat.

        2019-04-09  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/89998
        * gimple-ssa-sprintf.c (try_substitute_return_value): Use lhs type
        instead of integer_type_node if possible, don't add ranges if return
        type is not compatible with int.
        * gimple-fold.c (gimple_fold_builtin_sprintf,
        gimple_fold_builtin_snprintf): Use lhs type instead of hardcoded
        integer_type_node.

        2019-03-29  Jakub Jelinek  <jakub@redhat.com>

        PR c/89872
        * gimplify.c (gimplify_compound_literal_expr): Don't optimize a
        non-addressable complit into its initializer if it is volatile.

        2019-03-28  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/89621
        * tree-inline.h (struct copy_body_data): Add
        dont_remap_vla_if_no_change flag.
        * tree-inline.c (remap_type_3, remap_type_2): New functions.
        (remap_type): Don't remap vla types if id->dont_remap_vla_if_no_change
        and remap_type_2 returns false.
        * omp-low.c (new_omp_context): Set ctx->cb.dont_remap_vla_if_no_change.

        2019-03-20  Jakub Jelinek  <jakub@redhat.com>

        PR target/89752
        * lra-constraints.c (process_alt_operands) <reg>: For BLKmode, don't
        update this_alternative nor this_alternative_set.

        2019-03-19  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/89768
        * loop-unroll.c (unroll_loop_constant_iterations): Use gen_int_mode
        instead of GEN_INT.
        (unroll_loop_runtime_iterations): Likewise.

        PR target/89752
        * gimplify.c (gimplify_asm_expr): For output argument with
        TREE_ADDRESSABLE type, clear allows_reg if it allows memory, otherwise
        diagnose error.

        PR target/89726
        * config/i386/i386.c (ix86_expand_floorceildf_32): In ceil
        compensation use x2 += 1 instead of x2 -= -1 and when honoring
        signed zeros, do another copysign after the compensation.

        2019-03-15  Jakub Jelinek  <jakub@redhat.com>

        PR debug/89704
        * dwarf2out.c (add_const_value_attribute): Return false for MINUS,
        SIGN_EXTEND and ZERO_EXTEND.

        2019-03-14  Jakub Jelinek  <jakub@redhat.com>

        PR ipa/89684
        * multiple_target.c (create_dispatcher_calls): Change
        references_to_redirect from vector of ipa_ref * to vector of ipa_ref.
        In the node->iterate_referring loop, push *ref rather than ref, call
        ref->remove_reference () and always pass 0 to iterate_referring.

        PR rtl-optimization/89679
        * expmed.c (expand_mult_const): Don't add a REG_EQUAL note if it
        would contain a paradoxical SUBREG.

        PR tree-optimization/89703
        * tree-ssa-strlen.c (valid_builtin_call): Punt if stmt call types
        aren't compatible also with builtin_decl_explicit.  Check pure
        or non-pure status of BUILT_IN_STR{{,N}CMP,N{LEN,{CAT,CPY}{,_CHK}}}
        and BUILT_IN_STPNCPY{,_CHK}.

        2019-03-13  Jakub Jelinek  <jakub@redhat.com>

        PR debug/89498
        * dwarf2out.c (size_of_die): For dw_val_class_view_list always use
        DWARF_OFFSET_SIZE.
        (value_format): For dw_val_class_view_list never use DW_FORM_loclistx.

        PR middle-end/88588
        * omp-simd-clone.c (ipa_simd_modify_stmt_ops): Handle PHI args.
        (ipa_simd_modify_function_body): Handle PHIs.

        2019-03-12  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/89663
        * builtins.c (expand_builtin_int_roundingfn,
        expand_builtin_int_roundingfn_2): Return NULL_RTX instead of
        gcc_unreachable if validate_arglist fails.

        2019-03-09  Jakub Jelinek  <jakub@redhat.com>

        PR c/88568
        * attribs.c (handle_dll_attribute): Don't clear TREE_STATIC for
        dllimport on VAR_DECLs with RECORD_TYPE or UNION_TYPE DECL_CONTEXT.

        2019-03-05  Jakub Jelinek  <jakub@redhat.com>

        PR target/89587
        * config/rs6000/t-linux (MULTIARCH_DIRNAME): Set to non-empty only
        if_multiarch.

        PR middle-end/89590
        * builtins.c (maybe_emit_free_warning): Punt if free doesn't have
        exactly one argument.

        2019-02-28  Jakub Jelinek  <jakub@redhat.com>

        PR c/89520
        * convert.c (convert_to_real_1, convert_to_integer_1): Punt for
        builtins if they don't have a single scalar floating point argument.
        Formatting fixes.

        2019-02-20  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/89412
        * expr.c (expand_assignment): If result is a MEM, use change_address
        instead of simplify_gen_subreg.

        2019-02-20  Jakub Jelinek  <jakub@redhat.com>
                    David Malcolm  <dmalcolm@redhat.com>

        PR middle-end/89091
        * fold-const.c (decode_field_reference): Return NULL_TREE if
        lang_hooks.types.type_for_size returns NULL.  Check it before
        overwriting *exp_.  Use return NULL_TREE instead of return 0.

        2019-02-20  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/88074
        PR middle-end/89415
        * toplev.c (do_compile): Double the emin/emax exponents to workaround
        buggy mpc_norm.

        2019-02-19  Richard Biener  <rguenther@suse.de>

        PR middle-end/88074
        * toplev.c (do_compile): Initialize mpfr's exponent range
        based on available float modes.

2019-04-30  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        Backport from mainline.
        2019-04-30  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
        PR target/86538
        * config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
        Define __ARM_FEATURE_ATOMICS.

2019-04-30  Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

        Backport from mainline
        2018-12-11  Richard Earnshaw  <Richard.Earnshaw@arm.com>

        PR target/37369
        * config/aarch64/iterators.md (sizem1): Add sizes for
        SFmode and DFmode.
        (Vbtype): Add SFmode mapping.
        * config/aarch64/aarch64.md (copysigndf3, copysignsf3): Delete.
        (copysign<GPF:mode>3): New expand pattern.
        (copysign<GPF:mode>3_insn): New insn pattern.

2019-04-29  Richard Sandiford  <richard.sandiford@arm.com>

        Backport from mainline:
        2019-01-25  Richard Sandiford  <richard.sandiford@arm.com>

        PR middle-end/89037
        * varasm.c (output_constructor_bitfield): Use wi::extract_uhwi
        instead of accessing TREE_INT_CST_ELT directly.

2019-04-29  Richard Sandiford  <richard.sandiford@arm.com>

        Backport from mainline:
        2018-08-23  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/85910
        * config/aarch64/aarch64.c (aarch64_expand_vec_perm_const_1): Fix
        aarch64_evpc_tbl guard.

2019-04-29  Richard Sandiford  <richard.sandiford@arm.com>

        Backport from mainline:
        2019-03-08  Richard Sandiford  <richard.sandiford@arm.com>

        PR debug/89631
        * dwarf2cfi.c (dwarf2out_frame_debug_expr): Use CONST_POLY_INT
        instead of POLY_INT_CST.

2019-04-26  Roman Zhuykov  <zhroma@ispras.ru>

        Backport from mainline
        2019-04-23  Roman Zhuykov  <zhroma@ispras.ru>

        PR rtl-optimization/87979
        * modulo-sched.c (sms_schedule): Start ii value "mii" should
        not equal zero.

        PR rtl-optimization/84032
        * modulo-sched.c (ps_insn_find_column): Change condition so that
        branch will always be the last insn in a row inside partial
        schedule.

2019-04-19  Pat Haugen  <pthaugen@us.ibm.com>

        Backport from mainline:
        2019-04-16  Pat Haugen  <pthaugen@us.ibm.com>

        PR target/84369
        * config/rs6000/power9.md: Add store forwarding bypass.

2019-04-17  Martin Jambor  <mjambor@suse.cz>

        Backport from mainline
        2019-03-10  Martin Jambor  <mjambor@suse.cz>

        PR tree-optimization/85762
        PR tree-optimization/87008
        PR tree-optimization/85459
        * tree-sra.c (contains_vce_or_bfcref_p): New parameter, set the bool
        it points to if there is a type changing MEM_REF.  Adjust all callers.
        (build_accesses_from_assign): Disable total scalarization if
        contains_vce_or_bfcref_p returns true through the new parameter, for
        both rhs and lhs.

2019-04-17  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        Backport from mainline
        2019-03-15  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        PR target/87532
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
        When handling vec_extract, use modular arithmetic to allow
        constant selectors greater than vector length.
        * config/rs6000/rs6000.c (rs6000_expand_vector_extract): Allow
        V1TImode vectors to have constant selector values greater than 0.
        Use modular arithmetic to compute vector index.
        (rs6000_split_vec_extract_var): Use modular arithmetic to compute
        index for in-memory vectors.  Correct code generation for
        in-register vectors.  Use inner mode of vector rather than mode of
        destination for move instruction.
        (altivec_expand_vec_ext_builtin): Use modular arithmetic to
        compute index.

        2019-04-12  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        PR target/87532
        * config/rs6000/vsx.md (*vsx_extract_<mode>_<VS_scalar>mode_var):
        Use QI inner mode with V16QI vector mode.

2019-04-15  Martin Jambor  <mjambor@suse.cz>

        Backport from mainline
        2019-04-15  Martin Jambor  <mjambor@suse.cz>

        PR ipa/89693
        * cgraph.c (clone_of_p): Loop over clone chain for each step in
        the thunk chain.

2019-04-15  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2019-01-18  Martin Liska  <mliska@suse.cz>
                    Richard Biener  <rguenther@suse.de>

        PR middle-end/88587
        * cgraph.h (create_version_clone_with_body): Add new argument
        with attributes.
        * cgraphclones.c (cgraph_node::create_version_clone): Add
        DECL_ATTRIBUTES to a newly created decl.  And call
        valid_attribute_p so that proper cl_target_optimization_node
        is set for the newly created declaration.
        * multiple_target.c (create_target_clone): Set DECL_ATTRIBUTES
        for declaration.
        (expand_target_clones): Do not call valid_attribute_p, it must
        be already done.
        * tree-inline.c (copy_decl_for_dup_finish): Reset mode for
        vector types.

2019-04-11  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/90018
        * tree-vect-data-refs.c (vect_preserves_scalar_order_p):
        Test both SLP and interleaving variants.

2019-04-10  Matthew Malcomson  <matthew.malcomson@arm.com>

        PR target/90024
        * config/arm/arm.c (neon_valid_immediate): Disallow VOIDmode parameter.
        * config/arm/constraints.md (Dm, DN, Dn): Split previous Dn constraint
        into three.
        * config/arm/neon.md (*neon_mov<mode>): Account for TImode and DImode
        differences directly.
        (*smax<mode>3_neon, vashl<mode>3, vashr<mode>3_imm): Use Dm constraint.

2019-04-07  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/89945
        * config/i386/i386.md (anddi_1 to andsi_1_zext splitter):
        Avoid calling gen_lowpart with SYMBOL_REF and LABEL_REF operand.

2019-04-04  Martin Sebor  <msebor@redhat.com>

        PR middle-end/89934
        * gimple-ssa-warn-restrict.c (builtin_access::builtin_access): Bail
        out if the number of arguments is less than expected.

2019-04-03  Richard Biener  <rguenther@suse.de>

        PR lto/89896
        * lto-wrapper.c (run_gcc): Avoid implicit rules making
        the all target phony.

2019-04-02  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/89902
        PR target/89903
        * config/i386/i386.c (dimode_scalar_to_vector_candidate_p):
        Return false for variable DImode shifts.
        (dimode_scalar_chain::compute_convert_gain): Do not handle
        register count operand in variable DImode shifts.
        (dimode_scalar_chain::make_vector_copies): Remove support to copy
        count argument of a variable shift instruction to a vector register.
        (dimode_scalar_chain::convert_reg): Remove support to convert
        count argument of a variable shift instruction.

2019-03-29  Kugan Vivekanandarajah  <kuganv@linaro.org>

        Backport from mainline
        2019-03-29  Kugan Vivekanandarajah  <kuganv@linaro.org>
                    Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/89862
        * rtl.h (word_register_operation_p): Exclude CONST_INT from operations
        that operates on the full registers for WORD_REGISTER_OPERATIONS
        architectures.

2019-03-28  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/89848
        * config/i386/i386.c (dimode_scalar_chain::make_vector_copies):
        Also process XEXP (src, 0) of a shift insn.

2019-03-28  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2018-11-05  Martin Liska  <mliska@suse.cz>

        PR web/87829
        * doc/invoke.texi: Remove options that are
        not disabled with -Os.

2019-03-26  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/89827
        * config/i386/i386.c (dimode_scalar_chain::convert_reg):
        Also process XEXP (src, 0) of a shift insn.

2019-03-25  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2019-03-20  Andreas Krebbel  <krebbel@linux.ibm.com>

        PR target/89775
        * config/s390/s390.c (global_not_special_regno_p): Move to make it
        available to ...
        (s390_optimize_register_info): Use global_not_special_regno_p to
        check for global regs.

2019-03-22  Bill Schmidt  <wschmidt@linux.ibm.com>

        Backport from mainline
        2019-03-22  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/mmintrin.h (_mm_sub_pi32): Fix typo.

2019-03-21  Bill Schmidt  <wschmidt@linux.ibm.com>

        Backport from mainline
        2019-03-08  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000-p8swap.c (rs6000_analyze_swaps): Rebuild
        ud- and du-chains between phases.

2019-03-19  Richard Biener  <rguenther@suse.de>

        PR debug/88389
        * opts.c (finish_options): Disable -gsplit-dwarf when doing LTO.

2019-03-19  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/89753
        * loop-unroll.c (decide_unroll_constant_iterations): Make guard for
        explicit unrolling factor even more robust.

2019-03-18  Martin Sebor  <msebor@redhat.com>

        PR middle-end/88273
        * gimple-ssa-warn-restrict.c (builtin_memref::extend_offset_range):
        Handle anti-ranges the same as no range at all.

2019-03-18  Martin Jambor  <mjambor@suse.cz>

        Backport from mainline
        2019-03-18  Martin Jambor  <mjambor@suse.cz>

        PR tree-optimization/89546
        * tree-sra.c (propagate_subaccesses_across_link): Requeue new_acc if
        any propagation to its children took place.

2019-03-17  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2019-03-14  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/89523
        * config/i386/i386.c (ix86_print_operand): Handle 'M' to add
        addr32 prefix to VSIB address for X32.
        * config/i386/sse.md (*avx512pf_gatherpf<mode>sf_mask): Prepend
        "%M2" to opcode.
        (*avx512pf_gatherpf<mode>df_mask): Likewise.
        (*avx512pf_scatterpf<mode>sf_mask): Likewise.
        (*avx512pf_scatterpf<mode>df_mask): Likewise.
        (*avx2_gathersi<mode>): Prepend "%M3" to opcode.
        (*avx2_gathersi<mode>_2): Prepend "%M2" to opcode.
        (*avx2_gatherdi<mode>): Prepend "%M3" to opcode.
        (*avx2_gatherdi<mode>_2): Prepend "%M2" to opcode.
        (*avx2_gatherdi<mode>_3): Prepend "%M3" to opcode.
        (*avx2_gatherdi<mode>_4): Prepend "%M2" to opcode.`
        (*avx512f_gathersi<mode>): Prepend "%M4" to opcode.
        (*avx512f_gathersi<mode>_2): Prepend "%M3" to opcode.
        (*avx512f_gatherdi<mode>): Prepend "%M4" to opcode.
        (*avx512f_gatherdi<mode>_2): Prepend "%M3" to opcode.
        (*avx512f_scattersi<mode>): Prepend "%M0" to opcode.
        (*avx512f_scatterdi<mode>): Likewise.

2019-03-15  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-11-30  Jakub Jelinek  <jakub@redhat.com>

        PR testsuite/85368
        * params.def (PARAM_LOGICAL_OP_NON_SHORT_CIRCUIT): New param.
        * tree-ssa-ifcombine.c (ifcombine_ifandif): If
        --param logical-op-non-short-circuit is present, override
        LOGICAL_OP_NON_SHORT_CIRCUIT value from the param.
        * fold-const.c (fold_range_test, fold_truth_andor): Likewise.

2019-03-15  Martin Liska  <mliska@suse.cz>

        PR other/89712
        * doc/invoke.texi: Remove -fdump-class-hierarchy option.

2019-03-14  Martin Jambor  <mjambor@suse.cz>

        Backport from mainline
        2019-03-07  Martin Jambor  <mjambor@suse.cz>

        PR lto/87525
        * ipa-cp.c (perform_estimation_of_a_value): Account zero time benefit
        for extern inline functions.

2019-03-14  Richard Biener  <rguenther@suse.de>

        PR middle-end/89572
        * tree-scalar-evolution.c (get_loop_exit_condition): Use
        safe_dyn_cast.
        * tree-ssa-loop-ivcanon.c (canonicalize_loop_induction_variables):
        Use gimple_location_safe.

2019-03-13  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/85860
        * lra-constraints.c (inherit_in_ebb): Update
        potential_reload_hard_regs along with live_hard_regs.

2019-03-14  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-03-13  Richard Biener  <rguenther@suse.de>

        PR middle-end/89677
        * tree-scalar-evolution.c (simplify_peeled_chrec): Do not
        throw FP expressions at tree-affine.

        2019-03-01  Richard Biener  <rguenther@suse.de>

        PR middle-end/89497
        * tree-cfgcleanup.h (cleanup_tree_cfg): Add SSA update flags
        argument, defaulted to zero.
        * passes.c (execute_function_todo): Pass down SSA update flags
        to cleanup_tree_cfg.
        * tree-cfgcleanup.c: Include tree-into-ssa.h and tree-cfgcleanup.h.
        (cleanup_tree_cfg_1): After cleanup_control_flow_pre update SSA
        form if requested.
        (cleanup_tree_cfg_noloop): Pass down SSA update flags.
        (cleanup_tree_cfg): Get and pass down SSA update flags.

        2019-02-18  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/89296
        * tree-ssa-loop-ch.c (ch_base::copy_headers): Restrict setting
        of no-warning flag to cases that might emit the bogus warning.

2019-03-13  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2019-03-11  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.c (s390_expand_builtin): Do the copy_to_reg not
        only on the else branch.

2019-03-13  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2019-02-07  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390-builtin-types.def: Add new types.
        * config/s390/s390-builtins.def: (s390_vec_xl, s390_vec_xld2)
        (s390_vec_xlw4): Make the memory operand into a const pointer.
        (s390_vec_xld2, s390_vec_xlw4): Add a variant for single precision
        float.
        * config/s390/s390-c.c (s390_expand_overloaded_builtin): Generate
        a new vector type with the alignment of the scalar memory operand.

2019-03-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/89664
        * tree-ssa-math-opts.c (execute_cse_reciprocals_1): Properly
        free the occurance tree after the early out.

2019-03-12  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        Backport from mainline
        2019-03-08  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        * config/arm/arm.h (TARGET_FP16_TO_DOUBLE): Add TARGET_VFP_DOUBLE
        requirement.

2019-03-11  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/89588
        * loop-unroll.c (decide_unroll_constant_iterations): Make guard for
        explicit unrolling factor more robust.

2019-03-11  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2019-03-08  Martin Liska  <mliska@suse.cz>

        PR target/86952
        * config/i386/i386.c (ix86_option_override_internal): Disable
        jump tables when retpolines are used.

2019-03-11  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2019-02-11  David Malcolm  <dmalcolm@redhat.com>

        PR lto/88147
        * input.c (selftest::test_line_offset_overflow): New selftest.
        (selftest::input_c_tests): Call it.

2019-03-08  Martin Jambor  <mjambor@suse.cz>

        Backport from mainline
        2019-03-07  Martin Jambor  <mjambor@suse.cz>

        PR ipa/88235
        * cgraph.h (cgraph_node): New inline method former_thunk_p.
        * cgraph.c (cgraph_node::dump): Dump a note if node is a former thunk.
        (clone_of_p): Treat expanded thunks like thunks, be optimistic if they
        have multiple callees.  At the end check if declarations match as
        opposed to cgraph_nodes.

2019-03-06  Tamar Christina  <tamar.christina@arm.com>

        Backport from trunk.
        2019-02-25  Tamar Christina  <tamar.christina@arm.com>

        PR target/88530
        * common/config/aarch64/aarch64-common.c
        (struct aarch64_option_extension): Add is_synthetic.
        (all_extensions): Use it.
        (TARGET_OPTION_INIT_STRUCT): Define hook.
        (struct gcc_targetm_common): Moved to end.
        (all_extensions_by_on): New.
        (opt_ext_cmp, typedef opt_ext): New.
        (aarch64_option_init_struct): New.
        (aarch64_contains_opt): New.
        (aarch64_get_extension_string_for_isa_flags): Output smallest set.
        * config/aarch64/aarch64-option-extensions.def
        (AARCH64_OPT_EXTENSION): Explicitly include AES and SHA2 in crypto.
        (fp, simd, crc, lse, fp16, rcpc, rdma, dotprod, aes, sha2, sha3,
        sm4, fp16fml, sve):
        Set is_synthetic to false.
        (crypto): Set is_synthetic to true.
        * config/aarch64/driver-aarch64.c (AARCH64_OPT_EXTENSION): Add
        SYNTHETIC.

2019-03-06  Tamar Christina  <tamar.christina@arm.com>

        Backport from trunk.
        2019-02-28  Tamar Christina  <tamar.christina@arm.com>

        PR target/88530
        * config/aarch64/aarch64-option-extensions.def: Document it.
        * config/aarch64/driver-aarch64.c (host_detect_local_cpu): Skip feature
        if empty hwcaps.

2019-03-06  Xiong Hu Luo  <luoxhu@linux.ibm.com>

        Backport of r268834 from mainline to gcc-8-branch.
        2019-02-13  Xiong Hu Luo  <luoxhu@linux.vnet.ibm.com>

        * config/rs6000/altivec.h (vec_sbox_be, vec_cipher_be,
        vec_cipherlast_be, vec_ncipher_be, vec_ncipherlast_be): New #defines.
        * config/rs6000/crypto.md (CR_vqdi): New define_mode_iterator.
        (crypto_vsbox_<mode>, crypto_<CR_insn>_<mode>): New define_insns.
        * config/rs6000/rs6000-builtin.def (VSBOX_BE): New BU_CRYPTO_1.
        (VCIPHER_BE, VCIPHERLAST_BE, VNCIPHER_BE, VNCIPHERLAST_BE):
        New BU_CRYPTO_2.
        * config/rs6000/rs6000.c (builtin_function_type)
        <CRYPTO_BUILTIN_VSBOX_BE, CRYPTO_BUILTIN_VCIPHER_BE,
        CRYPTO_BUILTIN_VCIPHERLAST_BE, CRYPTO_BUILTIN_VNCIPHER_BE,
        CRYPTO_BUILTIN_VNCIPHERLAST_BE>: New switch options.
        * doc/extend.texi (vec_sbox_be, vec_cipher_be, vec_cipherlast_be,
        vec_ncipher_be, vec_ncipherlast_be): New builtin functions.

2019-03-05  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-02-26  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/89505
        * tree-ssa-structalias.c (compute_dependence_clique): Make sure
        to handle restrict pointed-to vars with multiple subvars
        correctly.

2019-03-01  Tamar Christina  <tamar.christina@arm.com>

        PR target/89517
        * config/aarch64/aarch64-option-extensions.def (fp, simd, crypto,
        fp16): Collapse line.

2019-03-01  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-03-01  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/89539
        * dwarf2out.c (output_comdat_type_unit): Add ATTRIBUTE_UNUSED to
        early_lto_debug argument.

        2019-02-27  Richard Biener  <rguenther@suse.de>

        PR debug/88878
        * dwarf2out.c (use_debug_types): Disable when in_lto_p.

        2019-02-27  Richard Biener  <rguenther@suse.de>

        PR debug/88878
        * dwarf2out.c (output_comdat_type_unit): Add early_lto_debug
        parameter, prefix section name with .gnu.debuglto_ if true.
        (dwarf2out_finish): Pass false to output_comdat_type_unit.
        (dwarf2out_early_finish): Pass true to output_comdat_type_unit.

        2019-02-27  Richard Biener  <rguenther@suse.de>

        PR debug/89514
        * dwarf2out.c (size_of_die): Key on AT_ref (a)->comdat_type_p
        rather than on use_debug_types, doing what output_die does.
        (value_format): Likewise.

2019-02-28  Eric Botcazou  <ebotcazou@adacore.com>

        PR tree-optimization/89536
        * tree-ssa-dom.c (edge_info::derive_equivalences) <BIT_NOT_EXPR>: Test
        only whether bit #0 of the value is 0 instead of the entire value.

2019-02-28  Li Jia He  <helijia@linux.ibm.com>

        Backport from trunk
        2019-02-20  Li Jia He  <helijia@linux.ibm.com>

        PR target/88100
        * gcc/config/rs6000/rs6000.c (rs6000_gimple_fold_builtin)
        <case ALTIVEC_BUILTIN_VSPLTISB, ALTIVEC_BUILTIN_VSPLTISH,
        ALTIVEC_BUILTIN_VSPLTISW>: Don't convert the operand before
        range checking it.

2019-02-27  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/89397
        * config/i386/i386.c (ix86_atomic_assign_expand_fenv): Check
        TARGET_SSE in addition to TARGET_SSE_MATH.

        (ix86_excess_precision): Ditto.
        (ix86_float_exceptions_rounding_supported_p): Ditto.
        (use_rsqrt_p): Ditto.
        * config/i386/sse.md (rsqrt<mode>2): Ditto.

2019-02-27  Jakub Jelinek  <jakub@redhat.com>

        Backported from mainline
        2019-02-18  Jakub Jelinek  <jakub@redhat.com>

        PR target/89361
        * config/s390/s390.c (s390_indirect_branch_attrvalue,
        s390_indirect_branch_settings): Define unconditionally.
        (s390_set_current_function): Likewise, but guard the whole body except
        the s390_indirect_branch_settings call with
        #if S390_USE_TARGET_ATTRIBUTE.
        (TARGET_SET_CURRENT_FUNCTION): Redefine unconditionally.

2019-02-26  Eric Botcazou  <ebotcazou@adacore.com>

        Backport from mainline
        2019-02-19  Eric Botcazou  <ebotcazou@adacore.com>

        * rtlanal.c (get_initial_register_offset): Fall back to the estimate
        as long as the epilogue isn't completed.

2019-02-26  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-ssa-dom.c (edge_info::derive_equivalences) <BIT_IOR_EXPR>: Fix
        and move around comment.
        <BIT_AND_EXPR>: Likewise.
        <BIT_NOT_EXPR>: Add specific handling for boolean types.

2019-02-24  Alan Modra  <amodra@gmail.com>

        PR target/89271
        * config/rs6000/rs6000.md (<bd>_<mode> split): Check for an int
        output reg on add insn.
        (<bd>tf_<mode> split): Likewise.  Match predicates with insn.

2019-02-22  Jakub Jelinek  <jakub@redhat.com>

        * BASE-VER: Set to 8.3.1.

2019-02-22  Release Manager

        * GCC 8.3.0 released.

2019-02-15  Richard Biener  <rguenther@suse.de>
            Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/89278
        * tree-loop-distribution.c: Include tree-eh.h.
        (generate_memset_builtin, generate_memcpy_builtin): Call
        rewrite_to_non_trapping_overflow on builtin->size before passing it
        to force_gimple_operand_gsi.

2019-02-15  Jakub Jelinek  <jakub@redhat.com>

        PR other/89342
        * optc-save-gen.awk: Handle optimize_fast like optimize_size or
        optimize_debug.
        * opth-gen.awk: Likewise.

2019-02-14  David Malcolm  <dmalcolm@redhat.com>

        Backport of r267957 from trunk.
        2019-01-15  David Malcolm  <dmalcolm@redhat.com>

        PR c++/88795
        * tree.c (build_function_type): Assert that arg_types is not
        error_mark_node.

2019-02-14  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/89354
        * combine.c (make_extraction): Punt if extraction_mode is narrower
        than len bits.

2019-02-14  David Malcolm  <dmalcolm@redhat.com>

        Backport of r263339 from trunk.
        2018-08-06  David Malcolm  <dmalcolm@redhat.com>

        * function-tests.c (selftest::test_expansion_to_rtl): Call
        free_after_compilation.

2019-02-14  David Malcolm  <dmalcolm@redhat.com>

        Backport of r263295 from trunk.
        2018-08-03  David Malcolm  <dmalcolm@redhat.com>

        * doc/gcov.texi (-x): Remove duplicate "to".
        * doc/invoke.texi (-Wnoexcept-type): Remove duplicate "calls".
        (-Wif-not-aligned): Remove duplicate "is".
        (-flto): Remove duplicate "the".
        (MicroBlaze Options): In examples of "-mcpu=cpu-type", remove
        duplicate "v5.00.b".
        (MSP430 Options): Remove duplicate "and" from the description
        of "-mgprel-sec=regexp".
        (x86 Options): Remove duplicate copies of "vmldLog102" and
        vmlsLog104 from description of "-mveclibabi=type".

2019-02-14  David Malcolm  <dmalcolm@redhat.com>

        Backport of r263275 from trunk.
        2018-08-02  David Malcolm  <dmalcolm@redhat.com>

        * diagnostic-show-locus.c (diagnostic_show_locus): Use
        pp_take_prefix when saving the existing prefix.
        * diagnostic.c (diagnostic_append_note): Likewise.
        * langhooks.c (lhd_print_error_function): Likewise.
        * pretty-print.c (pp_set_prefix): Drop the "const" from "prefix"
        param's type.  Free the existing prefix.
        (pp_take_prefix): New function.
        (pretty_printer::pretty_printer): Drop the prefix parameter.
        Rename the length parameter to match the comment.
        (pretty_printer::~pretty_printer): Free the prefix.
        * pretty-print.h (pretty_printer::pretty_printer): Drop the prefix
        parameter.
        (struct pretty_printer): Drop the "const" from "prefix" field's
        type and clarify memory management.
        (pp_set_prefix): Drop the "const" from the 2nd param.
        (pp_take_prefix): New decl.

2019-02-14  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-08-31  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/86684
        PR target/87149
        * config/rs6000/rs6000.md (lround<mode>di2): Gate on TARGET_FPRND.

2019-02-14  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2019-01-18  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/88892
        * config/rs6000/rs6000.md (*movsi_from_df): Allow only register
        operands.

2019-02-14  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-07-26  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/85805
        * combine.c (reg_nonzero_bits_for_combine): Only use the last set
        value for hard registers if that was written in the same mode.

2019-02-14  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2019-02-14  Martin Liska  <mliska@suse.cz>

        PR rtl-optimization/89242
        * dce.c (delete_unmarked_insns): Call free_dominance_info we
        process a transformation.

2019-02-14  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2019-02-13  Martin Liska  <mliska@suse.cz>

        PR lto/88858
        * cfgrtl.c (remove_barriers_from_footer): New function.
        (try_redirect_by_replacing_jump): Use it.
        (cfg_layout_redirect_edge_and_branch): Likewise.

2019-02-14  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2019-02-11  Martin Liska  <mliska@suse.cz>

        PR ipa/89009
        * ipa-cp.c (build_toporder_info): Remove usage of a param.
        * ipa-inline.c (inline_small_functions): Likewise.
        * ipa-pure-const.c (propagate_pure_const): Likewise.
        (propagate_nothrow): Likewise.
        * ipa-reference.c (propagate): Likewise.
        * ipa-utils.c (struct searchc_env): Remove unused field.
        (searchc): Always search across AVAIL_INTERPOSABLE.
        (ipa_reduced_postorder): Always allow AVAIL_INTERPOSABLE as
        the only called IPA pure const can properly not propagate
        across interposable boundary.
        * ipa-utils.h (ipa_reduced_postorder): Remove param.

2019-02-14  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/89314
        * fold-const.c (fold_binary_loc): Cast strlen argument to
        const char * before dereferencing it.  Formatting fixes.

        Backported from mainline
        2019-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/89303
        * tree-ssa-structalias.c (set_uids_in_ptset): Or in vi->is_heap_var
        into pt->vars_contains_escaped_heap instead of setting
        pt->vars_contains_escaped_heap to it.

        PR middle-end/89281
        * optabs.c (prepare_cmp_insn): Use UINTVAL (size) instead of
        INTVAL (size), compare it to GET_MODE_MASK instead of
        1 << GET_MODE_BITSIZE.

        PR target/89290
        * config/i386/predicates.md (x86_64_immediate_operand): Allow
        TLS UNSPECs offsetted by signed 32-bit CONST_INT even with
        -mcmodel=large.

        2019-02-09  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/89246
        * config/i386/i386.c (ix86_simd_clone_compute_vecsize_and_simdlen):
        If !node->definition and TYPE_ARG_TYPES is non-NULL, use
        TYPE_ARG_TYPES instead of DECL_ARGUMENTS.

2019-02-13  Bill Schmidt  <wschmidt@linux.ibm.com>

        Backport from mainline
        2019-02-11  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Shift-right
        and shift-left vector built-ins need to include a TRUNC_MOD_EXPR
        for correct semantics.

2019-02-13  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-01-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86554
        * tree-ssa-sccvn.c (visit_nary_op): When value-numbering to
        expressions with different overflow behavior make sure there's an
        available expression on the path.

2019-02-13  Martin Liska  <mliska@suse.cz>

        PR lto/89260
        * lto-streamer.h (LTO_minor_version): Bump version due
        to r268698.

2019-02-13  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-02-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/89253
        * tree-ssa-loop-split.c (tree_ssa_split_loops): Check we can
        duplicate the loop.

        2019-02-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/89223
        * tree-data-ref.c (initialize_matrix_A): Fail if constant
        doesn't fit in HWI.
        (analyze_subscript_affine_affine): Handle failure from
        initialize_matrix_A.

        2019-01-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/88739
        * tree-ssa-sccvn.c (vn_reference_lookup_3): Avoid generating
        BIT_FIELD_REFs of non-mode-precision integral operands.

2019-02-12  Jan Hubicka  <hubicka@ucw.cz>

        Backport from mainline:
        2019-02-09  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-visibility.c (localize_node): Also do not localize
        LDPR_PREVAILING_DEF_IRONLY_EXP.

2019-02-11  Stefan Agner  <stefan@agner.ch>

        Backport from mainline.
        2019-01-10  Stefan Agner  <stefan@agner.ch>

        PR target/88648
        * config/arm/arm.c (arm_option_override_internal): Force
        opts->x_inline_asm_unified to true only if TARGET_THUMB2_P.

2019-02-09  Jan Hubicka  <hubicka@ucw.cz>

        Backport from mainline:
        2019-01-05  Jan Hubicka  <hubicka@ucw.cz>

        PR tree-opt/86020
        Revert:
        2017-05-22  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-inline.c (edge_badness): Use inlined_time instead of
        inline_summaries->get.

2019-02-09  Aaron Sawdey  <acsawdey@linux.ibm.com>

        Backported from mainline
        2019-02-05  Aaron Sawdey  <acsawdey@linux.ibm.com>

        PR target/89112
        * config/rs6000/rs6000.md (<bd>tf_<mode>): Generate a local label
        for the long branch case.

        2019-02-05  Aaron Sawdey  <acsawdey@linux.ibm.com>

        PR target/89112
        * config/rs6000/rs6000-string.c (do_ifelse, expand_cmp_vec_sequence,
        expand_compare_loop, expand_block_compare_gpr,
        expand_strncmp_align_check, expand_strncmp_gpr_sequence): Insert
        REG_BR_PROB notes in inline expansion of memcmp/strncmp. Add
        #include "profile-count.h" and "predict.h" for types and functions
        needed to work with REG_BR_PROB notes.

        2019-02-09  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/rs6000-string.c (expand_compare_loop,
        expand_block_compare): Insert REG_BR_PROB notes in inline expansion of
        memcmp/strncmp.

2019-02-09  Jakub Jelinek  <jakub@redhat.com>

        Backported from mainline
        2019-01-16  David Malcolm  <dmalcolm@redhat.com>

        PR target/88861
        * combine.c (delete_noop_moves): Convert to "bool" return,
        returning true if any edges are eliminated.
        (combine_instructions): Also return true if delete_noop_moves
        returns true.

        2019-02-08  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/89234
        * except.c (copy_reg_eh_region_note_forward): Return if note_or_insn
        is a NOTE, CODE_LABEL etc. - rtx_insn * other than INSN_P.
        (copy_reg_eh_region_note_backward): Likewise.

2019-02-09  Alan Modra  <amodra@gmail.com>

        PR target/88343
        * config/rs6000/rs6000.c (save_reg_p): Match logic in
        rs6000_emit_prologue emitting pic_offset_table setup.

2019-02-08  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-11-13  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86991
        * tree-vect-loop.c (vect_is_slp_reduction): Delay reduction
        group building until we have successfully detected the SLP
        reduction.
        (vect_is_simple_reduction): Remove fixup code here.

2019-02-08  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-02-03  Richard Biener  <rguenther@suse.de>

        PR debug/87295
        * dwarf2out.c (copy_ancestor_tree): Register non-stubs as
        orig.

        2019-01-29  Richard Biener  <rguenther@suse.de>

        PR debug/87295
        * dwarf2out.c (collect_skeleton_dies): New helper.
        (copy_decls_for_unworthy_types): Call it.
        (build_abbrev_table): Do not try to replace
        DW_AT_signature refs with local refs.

        2019-01-17  Richard Biener  <rguenther@suse.de>

        PR lto/86736
        * dwarf2out.c (want_pubnames): Never generate pubnames sections
        and friends for the LTO part of debug info.

        2019-01-24  Richard Biener  <rguenther@suse.de>

        PR lto/87187
        * tree-streamer-out.c (write_ts_decl_common_tree_pointers):
        When in "legacy" debug mode make sure to reset self-origins.

        2019-01-15  Richard Biener  <rguenther@suse.de>

        PR debug/88046
        * dwarf2out.c (gen_member_die): Do not generate inheritance
        DIEs late.

        2018-11-22  Richard Biener  <rguenther@suse.de>

        PR lto/87229
        PR lto/88112
        * lto-streamer-out.c (lto_is_streamable): Allow CALL_EXPRs
        which can appear in size expressions.
        * tree-streamer-in.c (unpack_ts_base_value_fields): Stream
        CALL_EXPR_BY_DESCRIPTOR.
        (streamer_read_tree_bitfields): Stream CALL_EXPR_IFN.
        * tree-streamer-out.c (pack_ts_base_value_fields): Stream
        CALL_EXPR_BY_DESCRIPTOR.
        (streamer_write_tree_bitfields): Stream CALL_EXPR_IFN.

2019-02-08  Christophe Lyon  <christophe.lyon@linaro.org>

        Backport from mainline
        2019-01-07  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/85596
        * doc/install.texi (with-multilib-list): Document for aarch64.

2019-02-08  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-12-10  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/88427
        * vr-values.c (vr_values::extract_range_from_phi_node):
        Handle symbolic ranges conservatively when trying to drop
        to Inf +- 1.

        2018-11-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/88217
        * vr-values.c (vr_values::extract_range_from_phi_node): Make
        sure to handle results > +INF and < -INF correctly when
        trying to drop down to +INF - 1 or -INF + 1.

        2018-11-23  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/88149
        * tree-vect-slp.c (vect_slp_analyze_node_operations): Detect
        the case where there are two different def types for the
        same operand at different operand position in the same stmt.

2019-02-07  Jakub Jelinek  <jakub@redhat.com>

        Backported from mainline
        2019-02-05  Jakub Jelinek  <jakub@redhat.com>

        PR target/89188
        * dce.c (delete_unmarked_insns): Don't remove no-op moves if they
        can throw, non-call exceptions are enabled and we can't delete
        dead exceptions or alter cfg.  Set must_clean if
        delete_insn_and_edges returns true, don't set it blindly for calls.

        PR rtl-optimization/89195
        * combine.c (make_extraction): For MEMs, don't extract bytes outside
        of the original MEM.

        PR target/89186
        * optabs.c (prepare_cmp_insn): Pass x and y to
        emit_block_comp_via_libcall rather than XEXP (x, 0) and XEXP (y, 0).

        2019-02-02  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/87887
        * config/i386/i386.c (ix86_simd_clone_compute_vecsize_and_simdlen):
        Punt with warning on aggregate return or argument types.  Ignore
        type/mode checking for uniform arguments.

        2019-02-01  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/88107
        * tree-cfg.c (find_outermost_region_in_block): Add ALL argument,
        instead of assertion that eh_region_outermost is non-NULL, if it
        is NULL, set *ALL to true and return NULL.
        (move_sese_region_to_fn): Adjust caller, if all is set, call
        duplicate_eh_regions with NULL region.

        2019-01-31  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/89124
        * ipa-inline.c (sanitize_attrs_match_for_inline_p): Allow inlining
        always_inline callees into no_sanitize_address callers.

        2019-01-30  Jakub Jelinek  <jakub@redhat.com>

        PR c++/89105
        * config/i386/i386.c (ix86_warn_parameter_passing_abi): Don't warn
        for arguments to functions that are TU-local and shouldn't be
        referenced by assembly.

        2019-01-29  Jakub Jelinek  <jakub@redhat.com>

        PR c++/66676
        PR ipa/89104
        * omp-simd-clone.c (simd_clone_clauses_extract)
        <case OMP_CLAUSE_ALIGNED>: Ignore clauses with NULL
        OMP_CLAUSE_ALIGNED_ALIGNMENT.

        2019-01-28  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/89002
        * gimplify.c (gimplify_omp_for): When adding OMP_CLAUSE_*_GIMPLE_SEQ
        for lastprivate/linear IV, push gimplify context around gimplify_assign
        and, if it needed any temporaries, pop it into a gimple bind around the
        sequence.

        PR target/89073
        * doc/invoke.texi (-mclwb, -mprfchw, -mrdpid, -mrdseed, -msgx,
        -madx, -mhle, -mavx5124fmaps, -mavx512vnni, -mavx5124vnniw): Document
        x86 ISA options.
        (bmi2): Add missing @opindex.
        * doc/extend.texi (x86 target attribute): Move fma4, lwp, ssse3
        options alphabetically.  Add missing 3dnow, 3dnowa, adx, avx, avx2,
        avx5124fmaps, avx5124vnniw, avx512bitalg, avx512bw, avx512cd,
        avx512dq, avx512er, avx512f, avx512ifma, avx512pf, avx512vbmi,
        avx512vbmi2, avx512vl, avx512vnni, avx512vpopcntdq, bmi, bmi2,
        clflushopt, clwb, clzero, crc32, cx16, f16c, fma, fsgsbase,
        fxsr, gfni, hle, lzcnt, movbe, movdir64b, movdiri, mwaitx, pconfig,
        pku, prefetchwt1, prfchw, rdpid, rdrnd, rdseed, rtm, sahf,
        sgx, sha, shstk, tbm, vaes, vpclmulqdq, wbnoinvd, xsave,
        xsavec, xsaveopt and xsaves options.

        2019-01-27  Jakub Jelinek  <jakub@redhat.com>

        PR target/87214
        * config/i386/sse.md
        (<mask_codefor>avx512dq_shuf_<shuffletype>64x2_1<mask_name>,
        avx512f_shuf_<shuffletype>64x2_1<mask_name>): Ensure the
        first constants in pairs are multiples of 2.  Formatting fixes.
        (avx512vl_shuf_<shuffletype>32x4_1<mask_name>,
        avx512vl_shuf_<shuffletype>32x4_1<mask_name>): Ensure the
        first constants in each quadruple are multiples of 4.  Formatting fixes.

        2019-01-24  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/88964
        * gimple-loop-interchange.cc (loop_cand::analyze_induction_var): Also
        punt if HONOR_SNANS (chrec).

        2019-01-23  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/88964
        * gimple-loop-interchange.cc (loop_cand::analyze_induction_var): Use
        build_zero_cst instead of build_int_cst.  Return false for loop
        invariants which honor signed zeros.

        2019-01-22  Jakub Jelinek  <jakub@redhat.com>

        PR target/88965
        * config/rs6000/rs6000.c: Include tree-vrp.h and tree-ssanames.h.
        (rs6000_gimple_fold_builtin): If MEM_REF address doesn't satisfy
        is_gimple_mem_ref_addr predicate, force it into a SSA_NAME first.

        PR middle-end/88968
        * gimplify.c (gimplify_omp_atomic): Handle bitfield atomics with
        non-integral DECL_BIT_FIELD_REPRESENTATIVEs.

        PR target/88905
        * optabs.c (add_equal_note): Add op0_mode argument, use it instead of
        GET_MODE (op0).
        (expand_binop_directly, expand_doubleword_clz,
        expand_doubleword_popcount, expand_ctz, expand_ffs,
        expand_unop_direct, maybe_emit_unop_insn): Adjust callers.

        PR rtl-optimization/49429
        PR target/49454
        PR rtl-optimization/86334
        PR target/88906
        * expr.c (emit_block_move_hints): Move marking of MEM_EXPRs
        addressable from here...
        (emit_block_op_via_libcall): ... to here.

        2019-01-17  Jakub Jelinek  <jakub@redhat.com>

        PR target/88734
        * config/aarch64/arm_neon.h: Fix #pragma GCC target syntax - replace
        (("..."))) with ("...").  Use arch=armv8.2-a+sha3 instead of
        arch=armv8.2-a+crypto for vsha512hq_u64 etc. intrinsics.

        PR rtl-optimization/88870
        * dce.c (deletable_insn_p): Never delete const/pure calls that can
        throw if we can't alter the cfg or delete dead exceptions.
        (mark_insn): Don't call find_call_stack_args for such calls.

        2019-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/88714
        * passes.c (finish_optimization_passes): Call print_combine_total_stats
        inside of pass_combine_1 dump rather than pass_profile_1.

        2019-01-10  Jakub Jelinek  <jakub@redhat.com>

        PR c/88568
        * attribs.c (handle_dll_attribute): Clear TREE_STATIC after setting
        DECL_EXTERNAL.

        2019-01-07  Jakub Jelinek  <jakub@redhat.com>

        PR debug/88723
        * dwarf2out.c (const_ok_for_output_1): Remove redundant call to
        const_not_ok_for_debug_p target hook.
        (mem_loc_descriptor) <case UNSPEC>: Only call const_ok_for_output_1
        on UNSPEC and subexpressions thereof if all subexpressions of the
        UNSPEC are CONSTANT_P.

        2019-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR debug/88635
        * dwarf2out.c (const_ok_for_output_1): Reject MINUS that contains
        SYMBOL_REF, CODE_LABEL or UNSPEC in subexpressions of second argument.
        Reject PLUS that contains SYMBOL_REF, CODE_LABEL or UNSPEC in
        subexpressions of both operands.
        (mem_loc_descriptor): Handle UNSPEC if target hook acks it and all the
        subrtxes are CONSTANT_P.

2019-02-07  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-11-20  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/88105
        * tree-ssa-dom.c (pass_dominator::execute): Do not walk
        backedges.

        2018-11-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/88223
        * tree-ssa-sccvn.c (vn_reference_lookup_3): When skipping
        over a stored-same value may-alias store make sure to consider
        partial overlaps which are valid when TBAA reasonings do not
        apply and byte-granular overlaps are possible at all.

2019-02-07  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-12-11  Richard Biener  <rguenther@suse.de>

        PR middle-end/88448
        PR middle-end/88415
        * tree-complex.c (update_complex_assignment): Properly transfer
        or clean EH info around gimple_assign_set_rhs_with_ops.

        2018-11-15  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/88030
        * tree-complex.c (need_eh_cleanup): New global.
        (update_complex_assignment): Mark blocks that need EH update.
        (expand_complex_comparison): Likewise.
        (tree_lower_complex): Allocate and deallocate need_eh_cleanup,
        perform EH cleanup and schedule CFG cleanup if that did anything.

        2018-11-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87929
        * tree-complex.c (expand_complex_comparison): Clean EH.

2019-02-06  Eric Botcazou  <ebotcazou@adacore.com>

        * config/i386/i386.c (ix86_expand_prologue): Emit a memory blockage
        after restoring registers saved to allocate the frame on Windows.

2019-02-06  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-01-31  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/89135
        * tree-ssa-phiprop.c (pass_phiprop::execute): Skip blocks
        with abnormal preds.

        2019-01-18  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/88903
        * tree-vect-stmts.c (vectorizable_shift): Verify we see all
        scalar stmts a SLP shift amount is composed of when detecting
        shifts by scalars.

2019-02-05  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        Backport from mainline.
        2019-01-30  Kelvin Nilsen  <kelvin@gcc.gnu.org>
        * config/rs6000/rs6000-c.c (altivec-resolve_overloaded_builtin):
        Change handling of ALTIVEC_BUILTIN_VEC_EXTRACT.  Coerce result to
        type of vector element when vec_extract is implemented by direct
        move.

2019-02-05  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2019-02-05  Andreas Krebbel  <krebbel@linux.ibm.com>

        PR target/88856
        * config/s390/s390.md: Remove load and test FP splitter.

2019-02-04  Bill Schmidt  <wshmidt@linux.ibm.com>

        PR target/87064
        Backport from mainline

        2019-01-30  Bill Schmidt  <wschmidt@linux.ibm.com>

        PR target/87064
        * config/rs6000/vsx.md (*vsx_reduc_<VEC_reduc_name>_v4sf_scalar):
        Disable for little-endian.

        2019-01-22  Jakub Jelinek  <jakub@redhat.com>

        PR target/87064
        * config/rs6000/vsx.md (*vsx_reduc_<VEC_reduc_name>_v2df_scalar):
        Disable for little endian.

2019-02-04  Eric Botcazou  <ebotcazou@adacore.com>

        * config/sparc/sparc.h: Remove superfluous blank lines.
        * config/sparc/sparc.c (global_offset_table_rtx): Rename into...
        (got_register_rtx): ...this.
        (sparc_got): Adjust to above renaming.
        (sparc_tls_got): Likewise.
        (sparc_output_mi_thunk): Likewise.
        (sparc_init_pic_reg): Likewise.
        (save_local_or_in_reg_p): Fix test on the GOT register.
        (USE_HIDDEN_LINKONCE): Move around.
        (get_pc_thunk_name): Likewise.
        (gen_load_pcrel_sym): Likewise.
        (load_got_register): Likewise.

2019-02-01  Bin Cheng  <bin.cheng@linux.alibaba.com>

        Backport from mainline
        2018-10-15  Bin Cheng  <bin.cheng@linux.alibaba.com>

        PR tree-optimization/87022
        * tree-loop-distribution.c (pg_add_dependence_edges): Check all
        bits in dist vector rather than the first one.

2019-02-01  Bin Cheng  <bin.cheng@linux.alibaba.com>

        Backport from mainline
        2019-02-01  Bin Cheng  <bin.cheng@linux.alibaba.com>

        PR tree-optimization/88932
        * tree-predcom.c (try_combine_chains): Get loop bbs in dom order.

2018-01-31  Bill Schmidt  <wschmidt@linux.ibm.com>

        Backport from mainline
        2018-01-31  Bill Schmidt  <wschmidt@linux.ibm.com>

        PR tree-optimization/89008
        * gimple-ssa-strength-reduction.c (slsr_process_mul): Don't
        process anything of the form X * 0.

2019-01-31  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-01-31  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/89115
        * lra.c (lra_rtx_hash): Properly hash CONST_INT values.

        2019-01-30  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/89115
        * opts.c (default_options_optimization): Reduce
        PARAM_MAX_DSE_ACTIVE_LOCAL_STORES by a factor of 10 at -O1.
        Make PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP reduction relative
        to the default.

2019-01-30  Kewen Lin  <linkw@gcc.gnu.org>

        Backport from mainline.
        2019-01-17  Kewen Lin  <linkw@gcc.gnu.org>

        * doc/extend.texi: Add four new prototypes for vec_ld and seven new
        prototypes for vec_st.
        * config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Add entries
        for scalar address type variants of altivec_vec_ld/altivec_vec_st,
        mainly on signed/unsigned long long and double.

2019-01-29  Vineet Gupta  <vgupta@synopsys.com>

        Backport from mainline.
        * gcc/config.gcc: Force .init_array for ARC.

2019-01-29  Vineet Gupta  <vgupta@synopsys.com>

        Backport from mainline.
        * config/arc/atomic.md: Add operand to DMB instruction.

2019-01-27  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/88948
        * rtl.h (prepare_copy_insn): New prototype.
        * gcse.c (prepare_copy_insn): New function, split out from
        process_insert_insn.
        (process_insert_insn): Use prepare_copy_insn.
        * store-motion.c (replace_store_insn): Use prepare_copy_insn
        instead of gen_move_insn.

2019-01-25  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86865
        * graphite-scop-detection.c (scop_detection::can_represent_loop):
        Reject non-do-while loops.

2019-01-24  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/88998
        * config/i386/sse.md (sse2_cvtpi2pd): Add SSE alternatives.
        Disparage MMX alternative.
        (sse2_cvtpd2pi): Ditto.
        (sse2_cvttpd2pi): Ditto.

2019-01-24  Richard Earnshaw  <rearnsha@arm.com>

        PR target/88469
        * profile-count.h (profile_count): On ARM systems using GCC 6/7/8
        force the alignment of m_val.

2019-01-24  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-01-23  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/89008
        * tree-ssa-reassoc.c (eliminate_using_constants): For * 0 do
        not leave another stray operand.

2019-01-22  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/88938
        * config/i386/i386.c (ix86_expand_builtin) [case IX86_BUILTIN_BEXTRI32,
        case IX86_BUILTIN_BEXTRI64]: Sanitize operands.

2019-01-18  Richard Earnshaw  <rearnsha@arm.com>

        PR target/88799
        * config/arm/arm-cpus.in (mp): New feature.
        (sec): New feature.
        (fgroup ARMv7ve): Add mp and sec features.
        (arch armv7-a): Add options to allow mp and sec extensions.
        (cpu generic-armv7-a): Add options to allow mp and sec extensions.
        (cpu cortex-a5, cpu cortex-7, cpu cortex-a9): Add mp and sec
        extenstions to the base architecture.
        (cpu cortex-a8): Add sec extension to the base architecture.
        (cpu marvell-pj4): Add mp and sec extensions to the base architecture.
        * config/arm/t-aprofile (MULTILIB_MATCHES): Map all armv7-a arch
        variants down to the base v7-a varaint.
        * config/arm/t-multilib (v7_a_arch_variants): New variable.
        * doc/invoke.texi (ARM Options): Add +mp and +sec to the list
        of permitted extensions for -march=armv7-a and for
        -mcpu=generic-armv7-a.

2019-01-17  Uroš Bizjak  <ubizjak@gmail.com>

        * config/alpha/alpha.c (alpha_gimplify_va_arg):
        Handle split indirect COMPLEX_TYPE arguments.

2019-01-17  Eric Botcazou  <ebotcazou@adacore.com>

        * gimple-ssa-isolate-paths.c (stmt_uses_name_in_undefined_way): Replace
        flag_non_call_exceptions with cfun->can_throw_non_call_exceptions.
        (stmt_uses_0_or_null_in_undefined_way): Likewise.
        * tree-ssa-alias.c (same_addr_size_stores_p): Likewise.

2019-01-16  Aaron Sawdey  <acsawdey@linux.ibm.com>

        Backported from mainline
        2019-01-03  Aaron Sawdey  <acsawdey@linux.ibm.com>
        * config/rs6000/rs6000-string.c (expand_block_move): Don't use
        unaligned vsx and avoid lxvd2x/stxvd2x.
        (gen_lvx_v4si_move): New function.

2019-01-16  Martin Jambor  <mjambor@suse.cz>

        Backported from mainline
        2018-12-10  Martin Jambor  <mjambor@suse.cz>

        PR ipa/88214
        * ipa-prop.c (determine_locally_known_aggregate_parts): Make sure
        we check pointers against pointers.

2019-01-10  Jan Hubicka  <hubicka@ucw.cz>

        Backported from mainline
        2018-12-27  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-devirt.c (polymorphic_call_target_d): Add n_odr_types.
        (polymorphic_call_target_hasher::hash): Hash it.
        (polymorphic_call_target_hasher::equal): Compare it.
        (possible_polymorphic_call_targets): Set it.
        * tree.c (free_lang_data): Rebuild type inheritance graph even on
        non-LTO path.

2019-01-03  Jan Hubicka  <hubicka@ucw.cz>

        Backported from mainline
        2019-01-02  Richard Biener  <rguenther@suse.de>

        PR ipa/85574
        * ipa-icf.h (sem_item_optimizer::sort_congruence_split): Declare.
        * ipa-icf.c (sem_item_optimizer::sort_congruence_split): New
        function.
        (sem_item_optimizer::do_congruence_step_f): Sort the congruence
        set after UIDs before splitting them.

2019-01-03  Jan Hubicka  <hubicka@ucw.cz>

        Backported from mainline
        2019-01-03  Jan Hubicka  <hubicka@ucw.cz>

        PR tree-optimization/85574
        * tree-ssa-uncprop.c (struct equiv_hash_elt): Remove unused
        structure.
        (struct ssa_equip_hash_traits): Declare.
        (val_ssa_equiv): Use custom hash traits using operand_equal_p.

2019-01-09  Eric Botcazou  <ebotcazou@adacore.com>

        * config/sparc/sparc.md (*tablejump_sp32): Merge into...
        (*tablejump_sp64): Likewise.
        (*tablejump<P:mode>): ...this.
        (*call_address_sp32): Merge into...
        (*call_address_sp64): Likewise.
        (*call_address<P:mode>): ...this.
        (*call_symbolic_sp32): Merge into...
        (*call_symbolic_sp64): Likewise.
        (*call_symbolic<P:mode>): ...this.
        (call_value): Remove constraint and add predicate.
        (*call_value_address_sp32): Merge into...
        (*call_value_address_sp64): Likewise.
        (*call_value_address<P:mode>): ...this.
        (*call_value_symbolic_sp32): Merge into...
        (*call_value_symbolic_sp64): Likewise.
        (*call_value_symbolic<P:mode>): ...this.
        (*sibcall_symbolic_sp32): Merge into...
        (*sibcall_symbolic_sp64): Likewise.
        (*sibcall_symbolic<P:mode>): ...this.
        (sibcall_value): Remove constraint and add predicate.
        (*sibcall_value_symbolic_sp32): Merge into...
        (*sibcall_value_symbolic_sp64): Likewise.
        (*sibcall_value_symbolic<P:mode>): ...this.
        (window_save): Minor tweak.
        (*branch_sp32): Merge into...
        (*branch_sp64): Likewise.
        (*branch<P:mode>): ...this.

2019-01-09  Eric Botcazou  <ebotcazou@adacore.com>
            James Clarke  <jrtc27@jrtc27.com>

        PR target/84010
        * config/sparc/sparc.c (sparc_legitimize_tls_address): Only use Pmode
        consistently in TLS address generation and adjust code to the renaming
        of patterns.  Mark calls to __tls_get_addr as const.
        * config/sparc/sparc.md (tgd_hi22): Turn into...
        (tgd_hi22<P:mode>): ...this and use Pmode throughout.
        (tgd_lo10): Turn into...
        (tgd_lo10<P:mode>): ...this and use Pmode throughout.
        (tgd_add32): Merge into...
        (tgd_add64): Likewise.
        (tgd_add<P:mode>): ...this and use Pmode throughout.
        (tldm_hi22): Turn into...
        (tldm_hi22<P:mode>): ...this and use Pmode throughout.
        (tldm_lo10): Turn into...
        (tldm_lo10<P:mode>): ...this and use Pmode throughout.
        (tldm_add32): Merge into...
        (tldm_add64): Likewise.
        (tldm_add<P:mode>): ...this and use Pmode throughout.
        (tldm_call32): Merge into...
        (tldm_call64): Likewise.
        (tldm_call<P:mode>): ...this and use Pmode throughout.
        (tldo_hix22): Turn into...
        (tldo_hix22<P:mode>): ...this and use Pmode throughout.
        (tldo_lox10): Turn into...
        (tldo_lox10<P:mode>): ...this and use Pmode throughout.
        (tldo_add32): Merge into...
        (tldo_add64): Likewise.
        (tldo_add<P:mode>): ...this and use Pmode throughout.
        (tie_hi22): Turn into...
        (tie_hi22<P:mode>): ...this and use Pmode throughout.
        (tie_lo10): Turn into...
        (tie_lo10<P:mode>): ...this and use Pmode throughout.
        (tie_ld64): Use DImode throughout.
        (tie_add32): Merge into...
        (tie_add64): Likewise.
        (tie_add<P:mode>): ...this and use Pmode throughout.
        (tle_hix22_sp32): Merge into...
        (tle_hix22_sp64): Likewise.
        (tle_hix22<P:mode>): ...this and use Pmode throughout.
        (tle_lox22_sp32): Merge into...
        (tle_lox22_sp64): Likewise.
        (tle_lox22<P:mode>): ...this and use Pmode throughout.
        (*tldo_ldub_sp32): Merge into...
        (*tldo_ldub_sp64): Likewise.
        (*tldo_ldub<P:mode>): ...this and use Pmode throughout.
        (*tldo_ldub1_sp32): Merge into...
        (*tldo_ldub1_sp64): Likewise.
        (*tldo_ldub1<P:mode>): ...this and use Pmode throughout.
        (*tldo_ldub2_sp32): Merge into...
        (*tldo_ldub2_sp64): Likewise.
        (*tldo_ldub2<P:mode>): ...this and use Pmode throughout.
        (*tldo_ldsb1_sp32): Merge into...
        (*tldo_ldsb1_sp64): Likewise.
        (*tldo_ldsb1<P:mode>): ...this and use Pmode throughout.
        (*tldo_ldsb2_sp32): Merge into...
        (*tldo_ldsb2_sp64): Likewise.
        (*tldo_ldsb2<P:mode>): ...this and use Pmode throughout.
        (*tldo_ldub3_sp64): Use DImode throughout.
        (*tldo_ldsb3_sp64): Likewise.
        (*tldo_lduh_sp32): Merge into...
        (*tldo_lduh_sp64): Likewise.
        (*tldo_lduh<P:mode>): ...this and use Pmode throughout.
        (*tldo_lduh1_sp32): Merge into...
        (*tldo_lduh1_sp64): Likewise.
        (*tldo_lduh1<P:mode>): ...this and use Pmode throughout.
        (*tldo_ldsh1_sp32): Merge into...
        (*tldo_ldsh1_sp64): Likewise.
        (*tldo_ldsh1<P:mode>): ...this and use Pmode throughout.
        (*tldo_lduh2_sp64): Use DImode throughout.
        (*tldo_ldsh2_sp64): Likewise.
        (*tldo_lduw_sp32): Merge into...
        (*tldo_lduw_sp64): Likewise.
        (*tldo_lduw<P:mode>): ...this and use Pmode throughout.
        (*tldo_lduw1_sp64): Use DImode throughout.
        (*tldo_ldsw1_sp64): Likewise.
        (*tldo_ldx_sp64): Likewise.
        (*tldo_stb_sp32): Merge into...
        (*tldo_stb_sp64): Likewise.
        (*tldo_stb<P:mode>): ...this and use Pmode throughout.
        (*tldo_sth_sp32): Merge into...
        (*tldo_sth_sp64): Likewise.
        (*tldo_sth<P:mode>): ...this and use Pmode throughout.
        (*tldo_stw_sp32): Merge into...
        (*tldo_stw_sp64): Likewise.
        (*tldo_stw<P:mode>): ...this and use Pmode throughout.
        (*tldo_stx_sp64): Use DImode throughout.

2019-01-09  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/invoke.texi (-Os): Add reference to -finline-functions.
        (-finline-functions): Remove reference to -O2, add references
        to -fprofile-use and -fauto-profile.

2019-01-08  Jakub Jelinek  <jakub@redhat.com>

        Backported from mainline
        2019-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/82564
        PR target/88620
        * expr.c (expand_assignment): For calls returning VLA structures
        if to_rtx is not a MEM, force it into a stack temporary.

        2019-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR target/88594
        * config/i386/i386.c (ix86_expand_divmod_libfunc): Use mode instead
        of GET_MODE (opN) as modes of the libcall arguments.

        2019-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR debug/88644
        * dwarf2out.c (modified_type_die): If type is equal to sizetype,
        change it to qualified_type.

        2018-12-21  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/85594
        PR middle-end/88553
        * omp-expand.c (extract_omp_for_update_vars): Regimplify the condition
        if needed.
        (expand_omp_for_generic): Don't clobber t temporary for ordered loops.

        PR target/88522
        * config/i386/sse.md (*avx512pf_gatherpf<mode>sf_mask,
        *avx512pf_gatherpf<mode>df_mask, *avx512pf_scatterpf<mode>sf_mask,
        *avx512pf_scatterpf<mode>df_mask): Use %X5 instead of %5 for
        -masm=intel.
        (gatherq_mode): Remove mode iterator.
        (*avx512f_gathersi<mode>, *avx512f_gathersi<mode>_2): Use X instead
        of <xtg_mode>.
        (*avx512f_gatherdi<mode>): Use X instead of <gatherq_mode>.
        (*avx512f_gatherdi<mode>_2, *avx512f_scattersi<mode>,
        *avx512f_scatterdi<mode>): Use %X5 for -masm=intel.

        PR rtl-optimization/88563
        * expr.c (expand_expr_real_2) <case WIDEN_MULT_EXPR>: Swap innermode
        and mode arguments to convert_modes.  Likewise swap mode and word_mode
        arguments.  Handle both arguments with VOIDmode before convert_modes
        of one of them.  Formatting fixes.

        2018-12-19  Jakub Jelinek  <jakub@redhat.com>

        PR target/88541
        * config/i386/vpclmulqdqintrin.h (_mm256_clmulepi64_epi128): Enable
        for -mavx -mvpclmulqdq rather than just for -mavx512vl -mvpclmulqdq.

        2018-12-14  Jakub Jelinek  <jakub@redhat.com>

        PR c++/82294
        PR c++/87436
        * expr.h (categorize_ctor_elements): Add p_unique_nz_elts argument.
        * expr.c (categorize_ctor_elements_1): Likewise.  Compute it like
        p_nz_elts, except don't multiply it by mult.  Adjust recursive call.
        Fix up COMPLEX_CST handling.
        (categorize_ctor_elements): Add p_unique_nz_elts argument, initialize
        it and pass it through to categorize_ctor_elements_1.
        (mostly_zeros_p, all_zeros_p): Adjust categorize_ctor_elements callers.
        * gimplify.c (gimplify_init_constructor): Likewise.  Don't force
        ctor into readonly data section if num_unique_nonzero_elements is
        smaller or equal to 1/8 of num_nonzero_elements and size is >= 64
        bytes.

        2018-12-13  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/88470
        * cfgcleanup.c (outgoing_edges_match): If the function is
        shrink-wrapped and bb1 ends with a JUMP_INSN with a single fake
        edge to EXIT, return false.

        PR rtl-optimization/88416
        * valtrack.c (cleanup_auto_inc_dec): Handle pre/post-inc/dec/modify
        even if !AUTO_INC_DEC.

        2018-12-07  Jakub Jelinek  <jakub@redhat.com>

        PR target/85593
        * final.c (rest_of_handle_final): Don't call collect_fn_hard_reg_usage
        for functions with naked attribute.

        2018-12-06  Jakub Jelinek  <jakub@redhat.com>

        PR target/87598
        * config/aarch64/aarch64.c (aarch64_print_address_internal): Don't
        call output_operand_lossage on VOIDmode CONST_INTs.  After
        output_operand_lossage do return false.

        2018-12-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/87360
        * gimple-loop-jam.c (tree_loop_unroll_and_jam): On failure to analyze
        data dependencies, don't return false, just continue.

        2018-11-29  Jakub Jelinek  <jakub@redhat.com>

        PR target/88234
        * config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): For
        vec_add and vec_sub builtins, perform PLUS_EXPR or MINUS_EXPR
        in unsigned_type_for instead of vector integral type where overflow
        doesn't wrap.

        2018-11-26  Jakub Jelinek  <jakub@redhat.com>

        PR c++/86900
        * dwarf2out.c (secname_for_decl): For functions with
        DECL_SECTION_NAME if in_cold_section_p, try to return
        current_function_section's name if it is a named section.

        2018-11-22  Jakub Jelinek  <jakub@redhat.com>

        PR target/85644
        PR target/86832
        * config/i386/i386.c (ix86_option_override_internal): Default
        ix86_stack_protector_guard to SSP_TLS only if TARGET_THREAD_SSP_OFFSET
        is defined.
        * config/i386/i386.md (stack_protect_set, stack_protect_set_<mode>,
        stack_protect_test, stack_protect_test_<mode>): Use empty condition
        instead of TARGET_SSP_TLS_GUARD.

        2018-11-20  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/87895
        * omp-simd-clone.c (ipa_simd_modify_function_body): When removing
        or replacing GIMPLE_RETURN, set EDGE_FALLTHRU on the edge to EXIT.
        (simd_clone_adjust): Don't set EDGE_FALLTHRU here. In a loop that
        redirects edges to EXIT to edges to incr_bb, iterate while EXIT
        has any preds and always use EDGE_PRED (, 0).

        2018-11-19  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/88071
        * tree-vect-loop.c (vectorize_fold_left_reduction): Pass true instead
        of false as last argument to gsi_remove.
        * tree-vect-stmts.c (vect_finish_replace_stmt): Pass true instead of
        false as last argument to gsi_replace.

        PR debug/87039
        * omp-expand.c: Don't include debug.h.
        (adjust_context_and_scope): Add REGION argument.  Find DECL_CONTEXT
        from innermost outer parallel, task, or target that has a
        child_fn set, or, if there is no such outer region, use
        current_function_decl.  Do the DECL_CONTEXT adjustment regardless of
        whether a suitable BLOCK is found or not.
        (expand_parallel_call): Don't call adjust_context_and_scope here.
        (grid_expand_target_grid_body): Revert 2017-01-25 changes.
        (expand_omp_taskreg, expand_omp_target): Likewise.  Call
        adjust_context_and_scope.
        * dwarf2out.c (dwarf2out_early_global_decl): For
        decl_function_context recurse instead of calling dwarf2out_decl.

        2018-11-16  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/87475
        * cfgrtl.c (patch_jump_insn): Allow redirection failure for
        CROSSING_JUMP_P insns.
        (cfg_layout_redirect_edge_and_branch): Don't ICE if ret is NULL.

        2018-11-15  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/88018
        * cfgrtl.c (fixup_abnormal_edges): Guard moving insns to fallthru edge
        on the presence of fallthru edge, rather than if it is a USE or not.

        2018-11-13  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/87898
        * omp-simd-clone.c (ipa_simd_modify_function_body): Remove debug stmts
        where the first argument was changed into a non-decl.

2019-01-03  Jan Hubicka  <hubicka@ucw.cz>

        Backport from mainline
        2019-01-02  Jan Hubicka  <hubicka@ucw.cz>

        PR lto/88130
        * varpool.c (varpool_node::ctor_useable_for_folding_p): Also return
        false at WPA time when body was removed.

2019-01-03  Jan Hubicka  <hubicka@ucw.cz>

        Backport from mainline
        2018-08-29  Jan Hubicka  <jh@suse.cz>

        PR lto/86517
        PR lto/88185
        * lto-opts.c (lto_write_options): Always stream PIC/PIE mode.
        * lto-wrapper.c (merge_and_complain): Fix merging of PIC/PIE.

2019-01-04  Aaron Sawdey  <acsawdey@linux.ibm.com>

        Backport from mainline
        2018-11-28  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/rs6000-string.c (expand_block_clear): Change how
        we determine if unaligned vsx is ok.

2019-01-03  Jan Hubicka  <hubicka@ucw.cz>

        Backport from mainline
        2019-01-03  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-utils.c (scale_ipa_profile_for_fn): Break out from ...
        (ipa_merge_profiles): ... here; do not ICE on thunks and aliases.

2019-01-03  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2019-01-01  Jan Hubicka  <hubicka@ucw.cz>

        * coverage.c (get_coverage_counts): Use current_function_decl.
        * profile.c (read_thunk_profile): New function.
        (branch_prob): Add THUNK parameter.
        * tree-profile.c (tree_profiling): Handle thunks.
        * value-prof.c (init_node_map): Handle thunks.
        * value-prof.h (branch_prob): Upate prototype.
        (read_thunk_profile): Declare.

2019-01-03  Iain Sandoe  <iain@sandoe.co.uk>

        revert:
        2018-12-23  Iain Sandoe  <iain@sandoe.co.uk>

        backport from mainline.
        2018-12-12 Segher Boessenkool  <segher@kernel.crashing.org>
                   Iain Sandoe  <iain@sandoe.co.uk>

        PR target/88343
        * config/rs6000/rs6000.c (save_reg_p): Do not save the picbase reg
        unless it has been used.
        (first_reg_to_save): Remove dead code.

2019-01-02  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-12-06  Segher Boessenkool  <segher@kernel.crashing.org>

        PR inline-asm/55681
        * doc/extend.texi (Basic Asm): Update grammar.
        (Extended Asm): Update grammar.

        Backport from trunk
        2018-12-06  Segher Boessenkool  <segher@kernel.crashing.org>

        * doc/extend.texi (Using Assembly Language with C): Document asm inline.
        (Size of an asm): Fix typo.  Document asm inline.
        * gimple-pretty-print.c (dump_gimple_asm): Handle asm inline.
        * gimple.h (enum gf_mask): Add GF_ASM_INLINE.
        (gimple_asm_set_volatile): Fix typo.
        (gimple_asm_inline_p): New.
        (gimple_asm_set_inline): New.
        * gimplify.c (gimplify_asm_expr): Propagate the asm inline flag from
        tree to gimple.
        * ipa-icf-gimple.c (func_checker::compare_gimple_asm): Compare the
        gimple_asm_inline_p flag, too.
        * tree-core.h (tree_base): Document that protected_flag is ASM_INLINE_P
        in an ASM_EXPR.
        * tree-inline.c (estimate_num_insns): If gimple_asm_inline_p return
        a minimum size for an asm.
        * tree.h (ASM_INLINE_P): New.

2018-12-28  Thomas Schwinge  <thomas@codesourcery.com>
            Julian Brown  <julian@codesourcery.com>

        * gimplify.c (gimplify_scan_omp_clauses): Fix known_eq typo/bug.

2018-12-27  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2018-12-15  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/88561
        * ipa-polymorphic-call.c
        (ipa_polymorphic_call_context::ipa_polymorphic_call_context): Handle
        arguments of thunks correctly.
        (ipa_polymorphic_call_context::get_dynamic_context): Be ready for
        NULL instance pinter.
        * lto-cgraph.c (lto_output_node): Always stream thunk info.

2018-12-23  Iain Sandoe  <iain@sandoe.co.uk>

        backport from mainline.
        2018-12-12 Segher Boessenkool  <segher@kernel.crashing.org>
                   Iain Sandoe  <iain@sandoe.co.uk>

        PR target/88343
        * config/rs6000/rs6000.c (save_reg_p): Do not save the picbase reg
        unless it has been used.
        (first_reg_to_save): Remove dead code.

2018-12-23  Iain Sandoe  <iain@sandoe.co.uk>

        Backport from mainline
        2018-12-06  Iain Sandoe  <iain@sandoe.co.uk>

        PR c++/87380
        * config/darwin.h (TARGET_WEAK_NOT_IN_ARCHIVE_TOC) Remove, use the
        default.
        * config/rs6000/darwin7.h (TARGET_WEAK_NOT_IN_ARCHIVE_TOC): New.

2018-12-23  Iain Sandoe  <iain@sandoe.co.uk>

        Backport from mainline
        2018-12-06  Iain Sandoe  <iain@sandoe.co.uk>

        PR target/78444
        * config/i386/darwin.h (STACK_BOUNDARY): Remove macro.
        * config/i386/i386.c (ix86_compute_frame_layout): Ensure at least 128b
        stack alignment in non-leaf functions.

2018-12-21  Uros Bizjak  <ubizjak@gmail.com>

        Backport from mainline
        2018-12-10  Uros Bizjak  <ubizjak@gmail.com>

        PR target/88418
        * config/i386/i386.c (ix86_expand_sse_cmp): For vector modes,
        check operand 1 with vector_operand predicate.
        (ix86_expand_sse_movcc): For vector modes, check op_true with
        vector_operand, not nonimmediate_operand.

2018-12-19  Bill Schmidt  <wschmidt@linux.ibm.com>

        Backport from mainline
        2018-12-18  Bill Schmidt  <wschmidt@linux.ibm.com>

        * doc/extend.texi (PowerPC Altivec/VSX Built-in Functions):
        Describe when a typedef name can be used as the type specifier for
        a vector type, and when it cannot.

2018-12-19  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-12-19  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/88213
        * config/rs6000/vsx.md (*vsx_extract_<P:mode>_<VSX_D:mode>_load):
        Require TARGET_POWERPC64.

2018-12-17  Senthil Kumar Selvaraj  <senthilkumar.selvaraj@microchip.com>

        Backport from trunk
        2018-12-17  Senthil Kumar Selvaraj  <senthilkumar.selvaraj@microchip.com>

        PR rtl-optimization/88253
        * combine.c (combine_simplify_rtx): Test for side-effects before
        substituting by zero.

2018-12-15  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-12-14  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/88001
        * function.c (match_asm_constraints_1): Don't invalidly share RTL.

2018-12-15  Jan Hubicka  <jh@suse.cz>

        * ipa.c (cgraph_build_static_cdtor_1): Add OPTIMIZATION and TARGET
        parameters.
        (cgraph_build_static_cdtor): Update.
        (build_cdtor): Use OPTIMIZATION and TARGET of the first real cdtor
        callsed.

2018-12-15  Jan Hubicka  <jh@suse.cz>

        Backport from mainline
        2018-11-02  Richard Biener  <rguenther@suse.de>

        * dwarf2out.c (build_abbrev_table): Guard lookup_external_ref call
        with is_type_die.

2018-12-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        Backport from mainline
        2018-12-13  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * doc/invoke.texi (-msve-vector-bits): Clarify -msve-vector-bits=128
        behavior.

2018-12-14  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        Backport from mainline
        PR target/88224
        * config/arm/arm-cpus.in (armv7-r): Add FP16conv configurations.
        (cortex-r7, cortex-r8): Update fpu and add new configuration.
        * doc/invoke.texi (armv7-r): Add two new vfp options.
        (nofp.dp): Add cortex-r7 and cortex-r8 to the list of targets that
        support this option.

2018-12-13  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2018-11-05  Xuepeng Guo  <xuepeng.guo@intel.com>

        PR target/87853
        * config/i386/emmintrin.h (__v16qs): New to cope with option
        -funsigned-char.
        (_mm_cmpeq_epi8): Replace __v16qi with __v16qs.
        (_mm_cmplt_epi8): Likewise.
        (_mm_cmpgt_epi8): Likewise.

2018-12-13  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2018-12-13  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390-builtins.def (s390_vec_double_s64): Map to
        s390_vec_double_s64 instead of s390_vcdgb.
        (s390_vec_double_u64): Map to s390_vec_double_u64 instead of
        s390_vcdlgb.

2018-12-13  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2018-12-13  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/vx-builtins.md ("vec_ctd_s64", "vec_ctd_u64")
        ("vec_ctsl", "vec_ctul"): Replace 0 with VEC_NOINEXACT.
        ("vec_double_s64", "vec_double_u64"): Replace 4 with VEC_INEXACT.

2018-12-13  Eric Botcazou  <ebotcazou@adacore.com>

        Backport from mainline
        2018-12-11  Eric Botcazou  <ebotcazou@adacore.com>

        * config/rs6000/vxworks.h (RS6000_STARTING_FRAME_OFFSET): Define,
        accounting for STACK_BOUNDARY 128.
        (STACK_DYNAMIC_OFFSET): Likewise.

2018-12-12  Peter Bergner  <bergner@linux.ibm.com>

        Backport from mainline
        2018-12-07  Peter Bergner  <bergner@linux.ibm.com>

        PR target/87496
        * config/rs6000/rs6000.c (rs6000_option_override_internal): Disallow
        -mabi=ieeelongdouble and -mabi=ibmlongdouble without -mlong-double-128.
        Do not error for -mabi=ibmlongdouble and no ISA 2.06 support.
        * doc/invoke.texi: Document -mabi=ibmlongdouble and -mabi=ieeelongdouble
        require -mlong-double-128.

2018-12-05  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-09-20  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/87288
        * tree-vect-loop.c (vect_analyze_loop_2): Take PEELING_FOR_GAPS
        into account when determining PEELING_FOR_NITERS.

2018-12-05  Iain Sandoe  <iain@sandoe.co.uk>

        Backport from mainline
        2018-08-18  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.c (darwin_override_options): If -gsplit-dwarf is set,
        emit a diagnostic that it is not supported and reset the option.
        * config/darwin.h (DRIVER_SELF_SPECS): Note that gsplit-dwarf is not
        supported and consume the option.  (ASM_FINAL_SPEC): New.

2018-12-04  Iain Sandoe  <iain@sandoe.co.uk>

        Backport from mainline
        2018-08-15  Iain Sandoe  <iain@sandoe.co.uk>

        PR target/81685
        * config/darwin.h: (DEBUG_STR_OFFSETS_SECTION, DEBUG_LOCLISTS_SECTION,
        DEBUG_RNGLISTS_SECTION) new macros.  (DEBUG_PUBNAMES_SECTION,
        DEBUG_PUBTYPES_SECTION) update to include GNU variant.

2018-11-29  Peter Bergner  <bergner@linux.ibm.com>

        Backport from mainline
        2018-11-29  Peter Bergner  <bergner@linux.ibm.com>

        PR target/87496
        * config/rs6000/rs6000.c (rs6000_option_override_internal): Disallow
        -mabi=ieeelongdouble without both -mpopcntd and -mvsx.

2018-11-28  Aaron Sawdey  <acsawdey@linux.ibm.com>

        Backport from mainline
        2018-10-25  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/rs6000-string.c (expand_strncmp_gpr_sequence): Change to
        a shorter sequence with fewer branches.
        (emit_final_str_compare_gpr): Ditto.

        Backport from mainline to allow the above code to go in:
        2018-06-14  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/rs6000-string.c (do_and3, do_and3_mask,
        do_cmpb3, do_rotl3): New functions.

2018-11-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/79351
        * tree-ssa-sccvn.c (vn_reference_lookup_3): For assignments from
        empty CONSTRUCTORs ensure the store is at a constant position.

2018-11-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/88229
        * tree-ssa.c (non_rewritable_mem_ref_base): Check DECL_SIZE_UNIT
        is an INTEGER_CST before accessing it so.

2018-11-26  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2018-11-20  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.md ("clztidi2"): Swap the RTX's written to the
        DImode parts of the target operand.

2018-11-26  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2018-11-26  Andreas Krebbel  <krebbel@linux.ibm.com>

        * doc/invoke.texi: Document z14/arch12 -march option.

2018-11-23  Tamar Christina  <tamar.christina@arm.com>

        Backported from mainline.
        2018-08-16  Tamar Christina  <tamar.christina@arm.com>

        PR target/84711
        * config/arm/neon.md (movv4hf, movv8hf): Refactored to..
        (mov<mov>): ..this and enable unconditionally.

2018-11-22  Uros Bizjak  <ubizjak@gmail.com>

        Backport from mainline
        2018-11-16  Uros Bizjak  <ubizjak@gmail.com>

        PR target/88051
        * config/i386/sse.md (UNSPEC_MOVDI_TO_SSE): New UNSPEC.
        (movdi_to_sse): Rewrite using UNSPEC_MOVDI_TO_SSE unspec.

2018-11-20  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/85925
        * rtl.h (word_register_operation_p): New predicate.
        * combine.c (record_dead_and_set_regs_1): Only apply specific handling
        for WORD_REGISTER_OPERATIONS targets to word_register_operation_p RTX.
        * rtlanal.c (nonzero_bits1): Likewise.  Adjust couple of comments.
        (num_sign_bit_copies1): Likewise.

2018-11-19  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/88045
        * coverage.c (coverage_begin_function): One can't relly on the
        fact that function ends on the same line it starts or later.

2018-11-18  Uros Bizjak  <ubizjak@gmail.com>

        Backport from mainline
        2018-11-11  Uros Bizjak  <ubizjak@gmail.com>

        PR target/87928
        * config/i386/i386.h (STACK_BOUNDARY): Use TARGET_64BIT_MS_ABI
        instead of (TARGET_64BIT && ix86_abi == MS_ABI).
        * config/i386/darwin.h (STACK_BOUNDARY): Ditto.
        * config/i386/cygming.h (STACK_BOUNDARY): Remove.

2018-11-16  Eric Botcazou  <ebotcazou@adacore.com>

        * tree-switch-conversion.c (emit_case_decision_tree): Pass location
        of switch statement to emit_case_nodes.
        (do_jump_if_equal): Add LOC parameter and set it on the newly built
        GIMPLE comparison statement.
        (emit_cmp_and_jump_insns): Likewise.
        (emit_case_nodes): Add LOC parameter and pass it to do_jump_if_equal
        as well as recursive calls.

2018-11-15  Nathan Sidwell  <nathan@acm.org>

        PR debug/88006
        PR debug/87462
        * dwarf2out.c (dwarf2out_finish): Apply resolve_addr to comdat
        type list.

2018-11-14  Paul A. Clarke  <pc@us.ibm.com>

        Backport from mainline
        * config/rs6000/xmmintrin.h (_mm_extract_pi16): Fix for big-endian.

2018-11-14  Claudiu Zissulescu  <claziss@synopsys.com>

        Backport from mainline
        PR target/85968
        * config/arc/arc.c (arc_return_address_register): Fix
        if-condition.

2018-11-14  Claudiu Zissulescu  <claziss@synopsys.com>

        Backport from mainline
        * config/arc/arc.h (FUNCTION_PROFILER): Redefine to empty.
        * config/arc/elf.h (PROFILE_HOOK): Define.
        * config/arc/linux.h (PROFILE_HOOK): Likewise.

2018-11-14  Claudiu Zissulescu  <claziss@synopsys.com>

        Backport from mainline
        * config/arc/arc.c (hwloop_optimize): Bailout when detecting a
        jump table data in the text section.

2018-11-14  Claudiu Zissulescu  <claziss@synopsys.com>

        Backport from mainline
        * config/arc/arc.c (arc_eh_return_address_location): Repurpose it
        to fit the eh_return pattern.
        * config/arc/arc.md (eh_return): Define.
        (VUNSPEC_ARC_EH_RETURN): Likewise.
        * config/arc/arc-protos.h (arc_eh_return_address_location): Match
        new implementation.
        * config/arc/arc.h (EH_RETURN_HANDLER_RTX): Remove it.

2018-11-14  Claudiu Zissulescu  <claziss@synopsys.com>

        Backport from mainline
        2018-09-17  Alexey Brodkin  <abrodkin@synopsys.com>

        * config/arc/linux.h (LINK_EH_SPEC): Add missing space.

2018-11-14  Claudiu Zissulescu  <claziss@synopsys.com>

        Backport from mainline
        * config/arc/linux.h (CLEAR_INSN_CACHE): Define.

2018-11-11  Uros Bizjak  <ubizjak@gmail.com>

        Backport from mainline
        2018-11-04  Uros Bizjak  <ubizjak@gmail.com>

        PR middle-end/58372
        * cfgexpand.c (pass_expand::execute): Move the call to
        finish_eh_generation in front of the call to expand_stack_alignment.

2018-11-07  Max Filippov  <jcmvbkbc@gmail.com>

        Backport from mainline
        2018-11-05  Max Filippov  <jcmvbkbc@gmail.com>

        * config/xtensa/uclinux.h (XTENSA_ALWAYS_PIC): Change to 0.

2018-11-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/87859
        * gimple-ssa-store-merging.c (struct merged_store_group): Add
        first_nonmergeable_order member.
        (merged_store_group::merged_store_group): Initialize them.
        (imm_store_chain_info::coalesce_immediate_stores): Don't merge
        stores with order >= first_nonmergeable_order.
        Set merged_store->first_nonmergeable_order if we've skipped any
        stores.  Attempt to merge overlapping INTEGER_CST stores that
        we would otherwise skip.

        PR sanitizer/87837
        * match.pd (X + Y < X): Don't optimize if TYPE_OVERFLOW_SANITIZED.

        Backported from mainline
        2018-10-20  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/87647
        * varasm.c (decode_addr_const): Handle COMPOUND_LITERAL_EXPR.

        2018-10-19  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/85488
        PR middle-end/87649
        * omp-low.c (check_omp_nesting_restrictions): Diagnose ordered without
        depend closely nested inside of loop with ordered clause with
        a parameter.

2018-10-29  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-09-26  Richard Biener  <rguenther@suse.de>

        PR debug/87428
        PR debug/87362
        * tree-inline.c (expand_call_inline): When the location
        of the call is UNKNOWN_LOCATION use DECL_SOURCE_LOCATION
        or BUILTINS_LOCATION for the BLOCK_SOURCE_LOCATION of
        the inserted BLOCK to make inlined_function_outer_scope_p
        recognize it.
        * dwarf2out.c (add_call_src_coords_attributes): Do not add
        coords for reserved locations.

2018-10-28  Iain Sandoe  <iain@sandoe.co.uk>

        Backport from mainline
        2018-08-22  Iain Sandoe  <iain@sandoe.co.uk>

        PR bootstrap/81033
        PR target/81733
        PR target/52795
        * gcc/dwarf2out.c (FUNC_SECOND_SECT_LABEL): New.
        (dwarf2out_switch_text_section): Generate a local label for the second
        function sub-section and apply it as the second FDE start label.
        * gcc/final.c (final_scan_insn_1): Emit second FDE label after the
        second sub-section start.

2018-10-28  Iain Sandoe  <iain@sandoe.co.uk>

        Backport from mainline
        2018-08-15  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.c
        (darwin_function_switched_text_sections): Delete.
        * gcc/config/darwin.h
        (TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS): Likewise.

2018-10-28  Iain Sandoe  <iain@sandoe.co.uk>

        backport from mainline.
        2018-10-28  Iain Sandoe  <iain@sandoe.co.uk>

        PR target/85669
        * config/rs6000/darwin.h (STACK_BOUNDARY): New.
        (RS6000_STARTING_FRAME_OFFSET): Adjust to preserve 16byte alignment.
        (STACK_DYNAMIC_OFFSET): Likewise.

2018-10-26  Bill Schmidt  <wschmidt@linux.ibm.com>

        Backport from mainline
        2018-10-19  Bill Schmidt  <wschmidt@linux.ibm.com>

        PR tree-optimization/87473
        * gimple-ssa-strength-reduction.c (record_phi_increments_1): For
        phi arguments identical to the base expression of the phi
        candidate, record a phi-adjust increment of zero minus the index
        expression of the hidden basis.
        (phi_incr_cost_1): For phi arguments identical to the base
        expression of the phi candidate, the difference to compare against
        the increment is zero minus the index expression of the hidden
        basis, and there is no potential savings from replacing the (phi)
        statement.
        (ncd_with_phi): For phi arguments identical to the base expression
        of the phi candidate, the difference to compare against the
        increment is zero minus the index expression of the hidden basis.
        (all_phi_incrs_profitable_1): For phi arguments identical to the
        base expression of the phi candidate, the increment to be checked
        for profitability is zero minus the index expression of the hidden
        basis.

2018-10-25  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87665
        PR tree-optimization/87745
        * tree-vectorizer.h (get_earlier_stmt): Remove.
        (get_later_stmt): Pick up UID from the original non-pattern stmt.

2018-10-24  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87665
        * tree-vect-data-refs.c (vect_preserves_scalar_order_p): Adjust
        to reflect reality.

2018-10-23  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87700
        * tree-ssa-copy.c (set_copy_of_val): Fix change detection logic.

2018-10-19  Richard Biener  <rguenther@suse.de>

        PR middle-end/87645
        Backport from mainline
        2018-07-12  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.c (mprts_hook_cnt): Remove.
        (vn_lookup_simplify_result): Remove recursion limit applied
        here.
        (vn_nary_build_or_lookup_1): Adjust.
        (try_to_simplify): Likewise.
        * gimple-match-head.c (gimple_resimplify1): Instead apply one
        here.
        (gimple_resimplify2): Likewise.
        (gimple_resimplify3): Likewise.
        (gimple_resimplify4): Likewise.

2018-10-19  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2018-10-15  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.c (s390_expand_vec_init): Force vector element
        into reg if it isn't a general operand.

2018-10-18  Richard Biener  <rguenther@suse.de>

        PR middle-end/87087
        Revert
        2018-02-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84204
        * tree-chrec.c (chrec_fold_plus_1): Remove size limiting in
        this place.

2018-10-17  Eric Botcazou  <ebotcazou@adacore.com>

        PR middle-end/87623
        * fold-const.c (fold_truth_andor_1): If the right side is not constant,
        bail out if both sides do not have the same storage order.

2018-10-17  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-10-08  Richard Sandiford  <richard.sandiford@arm.com>

        PR middle-end/63155
        * gimple-ssa-backprop.c (backprop::intersect_uses): Use
        FOR_EACH_IMM_USE_FAST instead of FOR_EACH_IMM_USE_STMT.

2018-10-16  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-10-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/63155
        * tree-ssa-propagate.c (add_ssa_edge): Do cheap check first.
        (ssa_propagation_engine::ssa_propagate): Remove redundant
        bitmap bit clearing.

        2018-10-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/63155
        * tree-ssa-ccp.c (ccp_propagate::visit_phi): Avoid excess
        vertical space in dumpfiles.
        * tree-ssa-propagate.h
        (ssa_propagation_engine::process_ssa_edge_worklist): Remove.
        * tree-ssa-propagate.c (cfg_blocks_back): New global.
        (ssa_edge_worklist_back): Likewise.
        (curr_order): Likewise.
        (cfg_blocks_get): Remove abstraction.
        (cfg_blocks_add): Likewise.
        (cfg_blocks_empty_p): Likewise.
        (add_ssa_edge): Add to current or next worklist based on
        RPO index.
        (add_control_edge): Likewise.
        (ssa_propagation_engine::process_ssa_edge_worklist): Fold
        into ...
        (ssa_propagation_engine::ssa_propagate): ... here.  Unify
        iteration from CFG and SSA edge worklist so we process
        everything in RPO order, prioritizing forward progress
        over iteration.
        (ssa_prop_init): Allocate new worklists, do not dump
        immediate uses.
        (ssa_prop_fini): Free new worklists.

        2018-09-24  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/63155
        * tree-ssa-propagate.c (add_ssa_edge): Avoid adding PHIs to
        the worklist when the edge of the respective argument isn't
        executable.

2018-10-16  Wilco Dijkstra  <wdijkstr@arm.com>

        Backported from mainline
        PR target/87511
        * config/aarch64/aarch64.c (aarch64_mask_and_shift_for_ubfiz_p):
        Use HOST_WIDE_INT_1U for shift.

2018-10-16  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-09-18  Richard Biener  <rguenther@suse.de>

        PR middle-end/63155
        * tree-ssa-coalesce.c (tree_int_map_hasher): Remove.
        (compute_samebase_partition_bases): Likewise.
        (coalesce_ssa_name): Always use compute_optimized_partition_bases.
        (gimple_can_coalesce_p): Simplify.

2018-10-16  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-10-15  Richard Biener  <rguenther@suse.de>

        PR middle-end/87610
        * tree-ssa-structalias.c (struct vls_data): Add escaped_p member.
        (visit_loadstore): When a used restrict tag escaped verify that
        the points-to solution of "other" pointers do not include
        escaped.
        (compute_dependence_clique): If a used restrict tag escaped
        communicated that down to visit_loadstore.

        2018-10-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87465
        * tree-ssa-loop-ivcanon.c (tree_estimate_loop_size): Fix typo
        causing branch miscounts.

2018-10-11  Jakub Jelinek  <jakub@redhat.com>

        Backported from mainline
        2018-10-10  Jakub Jelinek  <jakub@redhat.com>

        PR target/87550
        * config/i386/i386-builtin.def (IX86_BUILTIN_RDPMC): Move from args set
        to special_args set.

        2018-09-26  Jakub Jelinek  <jakub@redhat.com>

        PR target/87414
        * config/i386/i386.c: Include debug.h and dwarf2out.h.
        (output_indirect_thunk): Emit DW_CFA_def_cfa_offset after the
        call.

        2018-09-12  Jakub Jelinek  <jakub@redhat.com>
                    Andreas Krebbel  <krebbel@linux.ibm.com>

        PR tree-optimization/86844
        * gimple-ssa-store-merging.c
        (imm_store_chain_info::coalesce_immediate): For overlapping stores, if
        there are any overlapping stores in between them, make sure they are
        also coalesced or we give up completely.

2018-10-09  Will Schmidt <will_schmidt@vnet.ibm.com>

        Backport from trunk.
        2018-09-06  Will Schmidt  <will_schmidt@vnet.ibm.com>

        PR target/86731
        * config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Update logic
        around folding of vec_sl to handle out of range shift values.

2018-10-09  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2018-09-29  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/87370
        * config/i386/i386.c (construct_container): Use TImode for
        BLKmode values in 2 integer registers.

2018-10-08  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2018-10-08  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/87517
        * config/i386/avx512fintrin.h (_mm512_mask_fmaddsub_round_pd):
        Defined with __builtin_ia32_vfmaddsubpd512_mask.

2018-10-05  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2018-10-05  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/87522
        * config/i386/gnu-user.h (ASM_SPEC): Don't pass -msse2avx to
        assembler for -mavx.
        * config/i386/gnu-user64.h (ASM_SPEC): Likewise.

2018-10-03  Uros Bizjak  <ubizjak@gmail.com>

        Backport from mainline
        2018-09-28  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.h (SSE_REGNO): Fix check for FIRST_REX_SSE_REG.
        (GET_SSE_REGNO): Rename from SSE_REGNO.  Update all uses for rename.

2018-10-03  Jonathan Wakely  <jwakely@redhat.com>

        PR other/87353
        * doc/invoke.texi (Link Options): Fix formatting and grammar.

2018-10-03  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2018-10-03  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/86109
        * coverage.c (coverage_begin_function): Do not
        mark lambdas as artificial.
        * tree-core.h (struct GTY): Remove tm_clone_flag
        and introduce new lambda_function.
        * tree.h (DECL_LAMBDA_FUNCTION): New macro.

2018-10-02  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2018-09-24  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/82699
        * config/i386/i386.c (rest_of_insert_endbranch): Set
        endbr_queued_at_entrance to true and don't insert ENDBR if
        x86_function_profiler will be called.
        (x86_function_profiler): Insert ENDBR if endbr_queued_at_entrance
        is true.
        * config/i386/i386.h (machine_function): Add
        endbr_queued_at_entrance.

2018-10-01  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        Backport from mainline
        2018-06-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/arm.c (output_move_double): Don't allow STRD instructions
        if starting source register is not even.

2018-09-29  Jakub Jelinek  <jakub@redhat.com>

        PR target/87467
        * config/i386/avx512fintrin.h (_mm512_abs_pd, _mm512_mask_abs_pd): Use
        __m512d type for __A argument rather than __m512.

2018-09-27  Michael Meissner  <meissner@linux.ibm.com>

        Backport from mainline
        2018-08-20  Michael Meissner  <meissner@linux.ibm.com>

        PR target/87033
        * config/rs6000/rs6000.md (extendsi<mode>2): Change constraints
        from 'Y' to 'YZ' to enable the LWAX instruction to be generated
        for indexed loads.

2018-09-25  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2018-09-24  Martin Liska  <mliska@suse.cz>

        PR sanitizer/85774
        * asan.c: Make asan_handled_variables extern.
        * asan.h: Likewise.
        * cfgexpand.c (expand_stack_vars): Make sure
        a representative is unpoison if another
        variable in the partition is handled by
        use-after-scope sanitization.

2018-09-24  Andrew Pinski  <apinski@marvell.com>

        *  config/aarch64/aarch64.c (aarch_macro_fusion_pair_p): Don't
        access prev before checking it for NULLness in the
        AARCH64_FUSE_CMP_BRANCH case.

2018-09-21  Eric Botcazou  <ebotcazou@adacore.com>

        * config/rs6000/rs6000.c (rs6000_function_ok_for_sibcall): Return false
        if the call takes a static chain.

2018-09-19  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa.md (atomic_storeqi): Restore deleted expander.
        (atomic_storehi): Likewise.
        (atomic_storesi): Likewise.
        (atomic_loaddi): Restore compare and swap exchange loop code.

2018-09-18  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-09-18  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/86882
        * rtlanal.c (reg_overlap_mentioned_p): Handle CLOBBER.

2018-09-18  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2018-09-17  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/85871
        * gcov.c (output_intermediate_file): Fix out of bounds
        access.

2018-09-16  Hans-Peter Nilsson  <hp@bitrange.com>

        PR target/85666
        * config/mmix/mmix.c (mmix_assemble_integer): Handle byte-size
        non-CONST_INT rtx:es using assemble_integer_with_op ".byte".
        (MMIX_CFUN_NEEDS_SAVED_EH_RETURN_ADDRESS): Don't call
        leaf_function_p, instead use has_hard_reg_initial_val.

2018-09-14  John David Anglin  <danglin@gcc.gnu.org>

        PR middle-end/87188
        * dojump.c (do_compare_and_jump): Canonicalize function pointers
        when one operand is a function pointer.  Use POINTER_TYPE_P and
        FUNC_OR_METHOD_TYPE_P.
        * expr.c (do_store_flag): Use POINTER_TYPE_P and FUNC_OR_METHOD_TYPE_P.
        * fold-const.c (build_range_check): Likewise.
        * match.pd (simple_comparison): Likewise.

2018-09-14  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-09-14  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/87224
        * config/rs6000/rs6000.md (*mov<mode>_hardfloat64): Add Z to the Y
        alternatives.

2018-09-14  Carl Love  <cel@us.ibm.com>

        Backport from trunk
        2018-09-14  Carl Love  <cel@us.ibm.com>

        * config/rs6000/emmintrin.h: Add _MM_SHUFFLE2.
        * config/rs6000/xmmintrin.h: Add _MM_SHUFFLE.

2018-09-12  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-08-24  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/86989
        * config/rs6000/rs6000.c (toc_relative_expr_p): Check that the base is
        the TOC register.

2018-09-12  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-08-22  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/86771
        * combine.c (try_combine): Do not allow splitting a resulting PARALLEL
        of two SETs into those two SETs, one to be placed at i2, if that SETs
        destination is modified between i2 and i3.

2018-09-12  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2018-09-12  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390.md (PFPO_RND_MODE_DFP, PFPO_RND_MODE_BFP): New
        constants.
        ("trunc<BFP:mode><DFP_ALL:mode>2")
        ("trunc<DFP_ALL:mode><BFP:mode>2")
        ("extend<BFP:mode><DFP_ALL:mode>2")
        ("extend<DFP_ALL:mode><BFP:mode>2"): Set proper rounding mode
        according to the target operand type.

2018-09-12  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/87248
        * fold-const.c (fold_ternary_loc) <case COND_EXPR>: Verify also that
        BIT_AND_EXPR's second operand is a power of two.  Formatting fix.

2018-09-05  Nathan Sidwell  <nathan@acm.org>

        PR c++/87137
        * stor-layout.c (place_field): Scan forwards to check last
        bitfield when ms_bitfield_placement is in effect.

2018-09-05  Richard Biener  <rguenther@suse.de>

        PR bootstrap/87225
        * tree-vect-stmts.c (vectorizable_simd_clone_call): Fix bogus
        return.

2018-09-05  Jakub Jelinek  <jakub@redhat.com>

        Backported from mainline
        2018-09-04  Jakub Jelinek  <jakub@redhat.com>

        PR target/87198
        * common/config/i386/i386-common.c (OPTION_MASK_ISA_XSAVEOPT_SET,
        OPTION_MASK_ISA_XSAVES_SET, OPTION_MASK_ISA_XSAVEC_SET): Use
        OPTION_MASK_ISA_XSAVE_SET instead of OPTION_MASK_ISA_XSAVE.
        (OPTION_MASK_ISA_XSAVE_UNSET): Add OPTION_MASK_ISA_XSAVES_UNSET
        and OPTION_MASK_ISA_XSAVEC_UNSET.

        2018-08-31  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/87138
        * expmed.c (expand_mult_const): Use immed_wide_int_const instead of
        gen_int_mode.  Formatting fixes.

        2018-08-11  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/86835
        * tree-ssa-math-opts.c (insert_reciprocals): Even when inserting
        new_stmt after def_gsi, make sure to insert new_square_stmt after
        that stmt, not 2 stmts before it.

2018-09-04  Max Filippov  <jcmvbkbc@gmail.com>

        Backport from mainline
        2018-09-04  Max Filippov  <jcmvbkbc@gmail.com>

        * config/xtensa/xtensa.c (xtensa_expand_atomic): Reorder AND and
        XOR operations in NAND case.

2018-09-04  Jonathan Wakely  <jwakely@redhat.com>

        * doc/invoke.texi (Option Summary): Add -Waligned-new.

2018-09-03  Tom de Vries  <tdevries@suse.de>

        backport from trunk:
        2018-06-21  Tom de Vries  <tdevries@suse.de>

        PR tree-optimization/85859
        * tree-ssa-tail-merge.c (stmt_local_def): Copy gimple_is_call
        test with comment from bb_no_side_effects_p.

2018-09-01  Michael Matz  <matz@suse.de>

        Backport from mainline
        PR tree-optimization/87074
        * gimple-loop-jam.c (unroll_jam_possible_p): Check loop exit
        PHIs for outer-loop uses.

2018-08-31  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-08-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86927
        * tree-vect-loop.c (vect_create_epilog_for_reduction): Properly
        use const cond reduction code.

        2018-08-23  Richard Biener  <rguenther@suse.de>

        PR middle-end/87024
        * tree-inline.c (copy_bb): Drop unused __builtin_va_arg_pack_len
        calls.

        2018-08-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86945
        * tree-cfg.c (generate_range_test): Use unsigned arithmetic.

        2018-08-17  Richard Biener  <rguenther@suse.de>

        PR middle-end/86505
        * tree-inline.c (copy_bb): When inlining __builtin_va_arg_pack_len ()
        across a va-arg-pack using call adjust its return value accordingly.

        2018-08-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86816
        * tree-ssa-tail-merge.c (tail_merge_valueize): New function
        which checks for value availability before querying it.
        (gvn_uses_equal): Use it.
        (same_succ_hash): Likewise.
        (gimple_equal_p): Likewise.

        2018-07-17  Richard Biener  <rguenther@suse.de>

        PR lto/86456
        * dwarf2out.c (init_sections_and_labels): Always generate
        a debug_line_str_section for early LTO debug.
        (dwarf2out_finish): Reset debug_line_str_hash output early.
        Bump counter for extra dwarf5 .debug_loc labels to not conflict
        with fat LTO part.
        (dwarf2out_early_finish): Output debug_line_str.

2018-08-29  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64.c (qdf24xx_vector_cost): New static global.
        (qdf24xx_tunings): Set vector cost structure to qdf24xx_vector_cost.

2018-08-29  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64.c (qdf24xx_addrcost_table)
        <register_sextend>: Set to 3.

2018-08-27  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86914
        * tree-ssa-strlen.c (maybe_set_strlen_range): Avoid MEM_REF.

2018-08-28  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/87099
        * calls.c (maybe_warn_nonstring_arg): Punt early if
        warn_stringop_overflow is zero.  Don't call get_range_strlen
        on 3rd argument, keep iterating until lenrng[1] is INTEGER_CST.
        Only use lenrng[1] if non-NULL and INTEGER_CST.  Don't uselessly
        increment lenrng[0].

2018-08-27  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/87065
        * combine.c (simplify_if_then_else): Formatting fix.
        (if_then_else_cond): Guard MULT optimization with SCALAR_INT_MODE_P
        check.
        (known_cond): Don't return const_true_rtx for vector modes.  Use
        CONST0_RTX instead of const0_rtx.  Formatting fixes.

2018-08-25  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

        Backport from mainline
        PR target/86662
        * gcc/tree.c (build_common_tree_nodes): Initialize integer_types array
        with all enabled __intN types.

        * gcc/testsuite/gcc.target/msp430/pr86662.c: New test.

2018-08-21  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2018-08-20  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/87014
        * config/i386/i386.md (eh_return): Always update EH return
        address in word_mode.

2018-08-17  John David Anglin  <danglin@gcc.gnu.org>

        Backport from mainline
        2018-08-11  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa.md (UNSPEC_MEMORY_BARRIER): New unspec enum.
        Update comment for atomic instructions.
        (atomic_storeqi, atomic_storehi, atomic_storesi, atomic_storesf,
        atomic_loaddf, atomic_loaddf_1, atomic_storedf, atomic_storedf_1):
        Remove.
        (atomic_loaddi): Revise fence expansion to only emit fence prior to
        load for __ATOMIC_SEQ_CST model.
        (atomic_loaddi_1): Remove float register target.
        (atomic_storedi): Handle CONST_INT values.
        (atomic_storedi_1): Remove float register source.  Add special case
        for zero value.
        (memory_barrier): New expander and insn.

2018-08-16  Tamar Christina <tamar.christina@arm.com>

        Backport from mainline
        2018-07-30  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/86640
        * config/arm/arm.c (arm_block_set_aligned_vect): Use gen_int_mode
        instead of GEN_INT.

2018-08-16  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2018-08-02  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/86817
        * gcov.c (process_all_functions): New function.
        (main): Call it.
        (process_file): Move functions processing to
        process_all_functions.

2018-08-14  Siddhesh Poyarekar  <siddhesh@sourceware.org>

        Backport from mainline
        2018-08-03  Siddhesh Poyarekar  <siddhesh@sourceware.org>

        * config/aarch64/falkor.md (falkor_am_1_vxvy_vxvy): Move
        neon_dup_q to...
        (falkor_am_1_gtov_gtov): ... a new insn reservation.

2018-08-13  Liu Hao  <lh_mouse@126.com>

        Backport from mainline
        2018-08-13  Liu Hao  <lh_mouse@126.com>

        * pretty-print.c (eat_esc_sequence): Swap the foreground and
        background colors if the COMMON_LVB_REVERSE_VIDEO flag is set,
        and clear it thereafter, as it only works for DBCS.

2018-08-13  Liu Hao  <lh_mouse@126.com>

        Backport from mainline
        2018-08-13  Liu Hao  <lh_mouse@126.com>

        * pretty-print.c (mingw_ansi_fputs): Do not call _close() on the
        handle returned by _get_osf_handle().

2018-08-14  Richard Sandiford  <richard.sandiford@arm.com>

        Backport from mainline
        2018-08-09  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/86871
        * tree-vect-stmts.c (vect_transform_stmt): Use gimple_get_lhs
        instead of gimple_assign_lhs.

2018-08-07  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2018-08-05  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/86386
        * config/i386/i386.c (ix86_finalize_stack_frame_flags): Set
        cfun->machine->max_used_stack_alignment if needed.

2018-08-02  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

        Backport from mainline
        2018-07-31  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

        PR middle-end/86705
        * gcc/cfgexpand.c (set_parm_rtl): Use the alignment of Pmode when
        MAX_SUPPORTED_STACK_ALIGNMENT would otherwise be exceeded by the
        requested variable alignment.
        (expand_one_ssa_partition): Likewise.
        (expand_one_var): Likewise.

2018-08-02  Andreas Schwab  <schwab@linux-m68k.org>

        Backport from mainline
        2018-07-17  Andreas Schwab  <schwab@linux-m68k.org>

        PR target/86820
        * config/m68k/m68k.md (umulsi3_highpart+1, const_umulsi3_highpart)
        (smulsi3_highpart+1, const_smulsi3_highpart): Add CC_STATUS_INIT.

2018-08-01  Richard Biener  <rguenther@suse.de>

        PR bootstrap/86724
        * graphite.h: Include isl/id.h and isl/space.h to allow build
        with ISL 0.20.

2018-08-01 Jan Willem Jagersma  <jwjagersma@gmail.com>

        PR target/86651
        * dwarf2out.c (dwarf2out_early_finish): Do not generate assembly in LTO
        mode for COFF targets.
        * defaults.h (TARGET_COFF): Define.
        * config/i386/djgpp.h (TARGET_ASM_LTO_START, TARGET_ASM_LTO_END,
        TARGET_COFF): Define.
        (i386_djgpp_asm_lto_start, i386_djgpp_asm_lto_end): Declare.
        * config/i386/djgpp.c (saved_debug_info_level): New static variable.
        (i386_djgpp_asm_lto_start, i386_djgpp_asm_lto_end): New functions.

2018-07-29  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        Backport from mainline
        2018-07-23  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR c/86617
        * genmatch.c (dt_operand::gen_match_op): Avoid folding volatile values.

2018-07-29  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa.c (pa_output_addr_vec): Align address table.
        * config/pa/pa.h (JUMP_TABLES_IN_TEXT_SECTION): Revise comment.
        * config/pa/pa32-linux.h (JUMP_TABLES_IN_TEXT_SECTION): Define.

2018-07-26  Uros Bizjak  <ubizjak@gmail.com>

        Backport from mainline
        2018-07-16  Uros Bizjak  <ubizjak@gmail.com>

        PR target/86511
        * expmed.c (emit_store_flag): Do not emit setcc followed by a
        conditional move when trapping comparison was split to a
        non-trapping one (and vice versa).

2018-07-26  Jakub Jelinek  <jakub@redhat.com>

        Backported from mainline
        2018-07-24  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/86627
        * expmed.c (expand_divmod): Punt if d == HOST_WIDE_INT_MIN
        and size > HOST_BITS_PER_WIDE_INT.  For size > HOST_BITS_PER_WIDE_INT
        and abs_d == d, do the power of two handling if profitable.

        2018-07-17  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/86542
        * omp-low.c (create_task_copyfn): Copy over also fields corresponding
        to _looptemp_ clauses, other than the first two.

        PR middle-end/86539
        * gimplify.c (gimplify_omp_for): Ensure taskloop firstprivatized init
        and cond temporaries don't have reference type if iterator has
        pointer type.  For init use &for_pre_body instead of pre_p if
        for_pre_body is non-empty.

2018-07-26  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/86660
        * omp-low.c (scan_sharing_clauses): Don't ignore map clauses for
        declare target to variables if they have always,{to,from,tofrom} map
        kinds.

        * BASE-VER: Set to 8.2.1.

2018-07-26  Release Manager

        * GCC 8.2.0 released.

2018-07-18  Martin Sebor  <msebor@redhat.com>

        PR middle-end/85602
        * calls.c (maybe_warn_nonstring_arg): Handle strncat.
        * tree-ssa-strlen.c (is_strlen_related_p): Make extern.
        Handle integer subtraction.
        (maybe_diag_stxncpy_trunc): Handle nonstring source arguments.
        * tree-ssa-strlen.h (is_strlen_related_p): Declare.
        * doc/invoke.texi (-Wstringop-truncation): Update.

gcc/testsuite/ChangeLog:

2018-07-16  Claudiu Zissulescu  <claziss@synopsys.com>

        Backport from mainline
        2017-03-24  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-protos.h (arc_pad_return): Remove.
        * config/arc/arc.c (machine_function): Remove force_short_suffix
        and size_reason.
        (arc_print_operand): Adjust printing of '&'.
        (arc_verify_short): Remove conditional printing of short suffix.
        (arc_final_prescan_insn): Remove reference to size_reason.
        (pad_return): New function.
        (arc_reorg): Call pad_return.
        (arc_pad_return): Remove.
        (arc_init_machine_status): Remove reference to force_short_suffix.
        * config/arc/arc.md (vunspec): Add VUNSPEC_ARC_BLOCKAGE.
        (attr length): When attribute iscompact is true force to 2
        regardless; in the case of maybe check if we want to force the
        instruction to have 4 bytes length.
        (nopv): Change it to generate 4 byte long nop as well.
        (blockage): New pattern.
        (simple_return): Remove call to arc_pad_return.
        (p_return_i): Likewise.

2018-07-19  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-07-13  Richard Biener  <rguenther@suse.de>

        PR debug/86452
        * dwarf2out.c (gen_type_die_with_usage): Use scope_die_for
        instead of get_context_die.

        2018-07-11  Richard Biener  <rguenther@suse.de>

        PR debug/86457
        * dwarf2out.c (init_sections_and_labels): Use
        output_asm_line_debug_info consistently.
        (dwarf2out_early_finish): Likewise.
        (dwarf2out_finish): Remove DW_AT_stmt_list from early generated
        type units.

2018-07-16  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-07-13  Richard Biener  <rguenther@suse.de>

        PR middle-end/85974
        * match.pd (addr1 - addr2): Allow either of the operand to
        have a conversion.

        2018-06-15  Richard Biener  <rguenther@suse.de>

        PR middle-end/86076
        * tree-cfg.c (move_stmt_op): unshare invariant addresses
        before adjusting their block.

        2018-06-06  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85935
        * graphite-scop-detection.c (find_params_in_bb): Analyze
        condition operands with respect to the correct loop.  Assert
        the analysis doesn't fail.

2018-07-16  Eric Botcazou  <ebotcazou@adacore.com>

        PR tree-optimization/86514
        * tree-ssa-reassoc.c (init_range_entry) <CASE_CONVERT>: Return for a
        conversion to a boolean type from a type with greater precision.

2018-07-15  Bill Schmidt  <wschmidt@linux.ibm.com>

        Backport from mainline
        2018-07-13  Bill Schmidt  <wschmidt@linux.ibm.com>
                    Steve Munroe  <munroesj52@gmail.com>

        * config/rs6000/emmintrin.h (_mm_and_si128): New function.
        (_mm_andnot_si128): Likewise.
        (_mm_or_si128): Likewise.
        (_mm_xor_si128): Likewise.

2018-07-14  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86274
        * gimple-ssa-sprintf.c (fmtresult::type_max_digits): Verify
        precondition.
        (format_floating): Correct handling of infinities and NaNs.

2018-07-13  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2018-07-13  H.J. Lu  <hongjiu.lu@intel.com>
                    Sunil K Pandey  <sunil.k.pandey@intel.com>

        PR target/84413
        * config/i386/i386.c (m_CORE_AVX512): New.
        (m_CORE_AVX2): Likewise.
        (m_CORE_ALL): Add m_CORE_AVX2.
        * config/i386/x86-tune.def: Replace m_HASWELL with m_CORE_AVX2.
        Replace m_SKYLAKE_AVX512 with m_CORE_AVX512 on avx256_optimal
        and remove the rest of m_SKYLAKE_AVX512.

2018-07-13  Marek Polacek  <polacek@redhat.com>

        Backport from trunk
        2018-07-03  Marek Polacek  <polacek@redhat.com>

        PR middle-end/86202
        * gimple-fold.c (size_must_be_zero_p): Check the type of the size.

2018-07-12  Richard Biener  <rguenther@suse.de>

        PR target/84829
        * config/gnu-user.h (GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC):
        Remove -mieee-fp handling.

2018-07-12  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/86492
        * gimple-ssa-store-merging.c
        (imm_store_chain_info::coalesce_immediate_stores): Call
        check_no_overlap even for the merge_overlapping case.

2018-07-11  Jakub Jelinek  <jakub@redhat.com>

        * config/i386/avx512bitalgintrin.h (_mm512_mask_bitshuffle_epi64_mask):
        Use __mmask64 type instead of __mmask8 for __M argument.
        * config/i386/avx512fintrin.h (_mm512_mask_xor_epi64,
        _mm512_maskz_xor_epi64): Use __mmask8 type instead of __mmask16 for
        __U argument.
        (_mm512_mask_cmpneq_epi64_mask): Use __mmask8 type instead of
        __mmask16 for __M argument.
        (_mm512_maskz_insertf32x4, _mm512_maskz_inserti32x4,
        _mm512_mask_insertf32x4, _mm512_mask_inserti32x4): Cast last argument
        to __mmask16 instead of __mmask8.
        * config/i386/avx512vlintrin.h (_mm_mask_add_ps, _mm_maskz_add_ps,
        _mm256_mask_add_ps, _mm256_maskz_add_ps, _mm_mask_sub_ps,
        _mm_maskz_sub_ps, _mm256_mask_sub_ps, _mm256_maskz_sub_ps,
        _mm256_maskz_cvtepi32_ps, _mm_maskz_cvtepi32_ps): Use __mmask8 type
        instead of __mmask16 for __U argument.
        * config/i386/avx512vlbwintrin.h (_mm_mask_cmp_epi8_mask): Use
        __mmask16 instead of __mmask8 for __U argument.
        (_mm256_mask_cmp_epi8_mask): Use __mmask32 instead of __mmask16 for
        __U argument.
        (_mm256_cmp_epi8_mask): Use __mmask32 return type instead of
        __mmask16.
        (_mm_mask_cmp_epu8_mask): Use __mmask16 instead of __mmask8 for __U
        argument.
        (_mm256_mask_cmp_epu8_mask): Use __mmask32 instead of __mmask16 for
        __U argument.
        (_mm256_cmp_epu8_mask): Use __mmask32 return type instead of
        __mmask16.
        (_mm_mask_cmp_epi16_mask): Cast last argument to __mmask8 instead
        of __mmask16.
        (_mm256_mask_cvtepi8_epi16): Use __mmask16 instead of __mmask32 for
        __U argument.
        (_mm_mask_cvtepi8_epi16): Use __mmask8 instead of __mmask32 for
        __U argument.
        (_mm256_mask_cvtepu8_epi16): Use __mmask16 instead of __mmask32 for
        __U argument.
        (_mm_mask_cvtepu8_epi16): Use __mmask8 instead of __mmask32 for
        __U argument.
        (_mm256_mask_cmpneq_epu8_mask, _mm256_mask_cmplt_epu8_mask,
        _mm256_mask_cmpge_epu8_mask, _mm256_mask_cmple_epu8_mask): Change
        return type as well as __M argument type and all casts from __mmask8
        to __mmask32.
        (_mm256_mask_cmpneq_epu16_mask, _mm256_mask_cmplt_epu16_mask,
        _mm256_mask_cmpge_epu16_mask, _mm256_mask_cmple_epu16_mask): Change
        return type as well as __M argument type and all casts from __mmask8
        to __mmask16.
        (_mm256_mask_cmpneq_epi8_mask, _mm256_mask_cmplt_epi8_mask,
        _mm256_mask_cmpge_epi8_mask, _mm256_mask_cmple_epi8_mask): Change
        return type as well as __M argument type and all casts from __mmask8
        to __mmask32.
        (_mm256_mask_cmpneq_epi16_mask, _mm256_mask_cmplt_epi16_mask,
        _mm256_mask_cmpge_epi16_mask, _mm256_mask_cmple_epi16_mask): Change
        return type as well as __M argument type and all casts from __mmask8
        to __mmask16.
        * config/i386/avx512vbmi2vlintrin.h (_mm_mask_shrdi_epi32,
        _mm_mask_shldi_epi32): Cast last argument to __mmask8 instead of
        __mmask16.

2018-07-11  Grazvydas Ignotas  <notasas@gmail.com>

        * config/i386/avx512bwintrin.h: (_mm512_mask_cmp_epi8_mask,
        _mm512_mask_cmp_epu8_mask): Use __mmask64 type instead of __mmask32
        for __U argument.

2018-07-05  Martin Sebor  <msebor@redhat.com>

        PR c++/86400
        * tree-ssa-strlen.c (maybe_set_strlen_range): Use type size rather
        than its domain to compute its the upper bound of a char array.

2018-07-03  Carl Love  <cel@us.ibm.com>

        Backport from trunk
        2018-07-03  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-c.c: Map ALTIVEC_BUILTIN_VEC_UNPACKH for
        float argument to VSX_BUILTIN_DOUBLEH_V4SF.
        Map ALTIVEC_BUILTIN_VEC_UNPACKL for float argument to
        VSX_BUILTIN_DOUBLEL_V4SF.

2018-07-04  Luis Machado  <luis.machado@linaro.org>

        * config/aarch64/aarch64.c (qdf24xx_addrcost_table): New static
        global.
        (qdf24xx_tunings) <addr_costs>: Set to qdf24xx_addrcost_table.

2018-07-02  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-06-26  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/86285
        * config/rs6000/rs6000.c (rs6000_init_builtins): Do not set
        ieee128_float_type_node to long_double_type_node unless
        TARGET_LONG_DOUBLE_128 is set.

2018-07-02  Eric Botcazou  <ebotcazou@adacore.com>

        * config/i386/i386.c (ix86_finalize_stack_frame_flags): Do not overrule
        -fno-omit-frame-pointer when not optimizing.

2018-06-30  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/86064
        * dwarf2out.c (loc_list_has_views): Adjust comments.
        (dw_loc_list): Split single cross-partition range with
        nonzero locview.

2018-06-29  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        Backport from mainline
        2018-06-22  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Change
        behavior of vec_pack (vector double, vector double) to match
        behavior of vec_float2 (vector double, vector double).

2018-06-29  Jakub Jelinek  <jakub@redhat.com>

        * config/rs6000/t-rs6000: Append rs6000-modes.h to TM_H.

2018-06-28  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        Backport from mainline
        2017-05-23  Segher Boessenkool  <segher@kernel.crashing.org>

        * doc/sourcebuild.texi (Endianness): New subsubsection.

2018-06-27  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        Backport from mainline
        2018-06-20  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Change
        behavior of vec_packsu (vector unsigned long long, vector unsigned
        long long) to match behavior of vec_packs with same signature.

2018-06-26  Aaron Sawdey  <acsawdey@linux.ibm.com>

        Backport from trunk
        2018-06-26  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/rs6000-string.c (expand_block_clear): Don't use
        unaligned vsx for 16B memset.

2018-06-26  Aaron Sawdey  <acsawdey@linux.ibm.com>

        Backport from trunk
        2018-06-22  Aaron Sawdey  <acsawdey@linux.ibm.com>

        PR target/86222
        * config/rs6000/rs6000-string.c (expand_strn_compare): Handle -m32
        correctly.

2018-06-26  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-05-08  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/85645
        * regrename.c (build_def_use): Also kill the chains that include the
        destination of a REG_CFA_REGISTER note.

2018-06-26  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-05-08  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/85645
        *  regcprop.c (copyprop_hardreg_forward_1): Don't propagate into an
        insn that has a REG_CFA_REGISTER note.

2018-06-26  Robin Dapp  <rdapp@linux.ibm.com>

        * config/s390/s390.h (enum processor_flags): Do not use
        default tune parameter when -march was specified.

2018-06-26  Jakub Jelinek  <jakub@redhat.com>

        PR target/86314
        * config/i386/i386.md (setcc + movzbl to xor + setcc peephole2s):
        Check reg_overlap_mentioned_p in addition to reg_set_p with the same
        operands.

2018-06-25  Michael Meissner  <meissner@linux.ibm.com>

        Back port from trunk
        2018-06-25  Michael Meissner  <meissner@linux.ibm.com>

        * config.gcc (powerpc64le*): Revert January 16th, 2018 patch that
        added IEEE/IBM long double multilib support on PowerPC little
        endian Linux systems.
        * config/rs6000/linux64.h (MULTILIB_DEFAULTS_IEEE): Likewise.
        (MULTILIB_DEFAULTS): Likewise.
        * config/rs6000/rs6000.c (rs6000_option_override_internal):
        Likewise.
        * config/rs6000/rs6000.h (TARGET_IEEEQUAD_MULTILIB): Likewise.
        * config/rs6000/t-ldouble-linux64le-ibm: Delete, no longer used.
        * config/rs6000/t-ldouble-linux64le-ieee: Delete, no longer used.

2018-06-25  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-06-04  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.md (abs<mode>2): Handle IFmode.

2018-05-02  Jan Hubicka  <jh@suse.cz>

        Backport from mainline
        2018-04-30  Jan Hubicka  <jh@suse.cz>

        * lto-wrapper.c (ltrans_priorities): New static var.
        (cmp_priority): New.
        (run_gcc): Read priorities and if doing parallel build order
        the Makefile by them.

2018-06-25  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-06-19  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/86197
        * config/rs6000/rs6000.md (rs6000_discover_homogeneous_aggregate): An
        ieee128 argument takes up only one (vector) register, not two (floating
        point) registers.

2018-06-23  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/85989
        * gimple-ssa-backprop.c (backprop::m_visited_phis): New member
        variable.
        (backprop::intersect_uses): Check it when deciding whether this
        is a backedge reference.
        (backprop::process_block): Add each phi to m_visited_phis
        after visiting it, then clear it at the end.

2018-06-22  David Edelsohn  <dje.gcc@gmail.com>

        Backport from mainline

        2018-06-19  Tony Reix  <tony.reix@atos.com>
            Damien Bergamini  <damien.bergamini@atos.com>
            David Edelsohn  <dje.gcc@gmail.com>

        * collect2.c (static_obj): New variable.
        (static_libs): New variable.
        (is_in_list): Uncomment declaration.
        (main): Track AIX libraries linked statically.
        (is_in_list): Uncomment definition.
        (scan_prog_file): Don't add AIX shared libraries initializer
        to constructor list if linking statically.

2018-06-22  Michael Meissner  <meissner@linux.ibm.com>

        Back port from trunk
        2018-06-21  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/rs6000.md (extendtfif2): Add missing 128-bit
        conversion insn that shows up when pr85657-3.c is compiled using
        IEEE 128-bit long double.

        Back port from trunk
        2018-06-21  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/rs6000.c (init_float128_ieee): Prevent complex
        multiply and divide external functions from being created more
        than once.

        Back port from trunk
        2018-06-21  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/rs6000.md (neg<mode>2_internal): Use the correct
        mode to check whether the mode is IBM extended.

        2018-06-18  Michael Meissner  <meissner@linux.ibm.com>

        PR target/85358
        * config/rs6000/rs6000-modes.def (toplevel): Rework the 128-bit
        floating point modes, so that IFmode is numerically greater than
        TFmode, which is greater than KFmode using FRACTIONAL_FLOAT_MODE
        to declare the ordering.  This prevents IFmode from being
        converted to TFmode when long double is IEEE 128-bit on an ISA 3.0
        machine.  Include rs6000-modes.h to share the fractional values
        between genmodes* and the rest of the compiler.
        (IFmode): Likewise.
        (KFmode): Likewise.
        (TFmode): Likewise.
        * config/rs6000/rs6000-modes.h: New file.
        * config/rs6000/rs6000.c (rs6000_debug_reg_global): Change the
        meaning of rs6000_long_double_size so that 126..128 selects an
        appropriate 128-bit floating point type.
        (rs6000_option_override_internal): Likewise.
        * config/rs6000/rs6000.h (toplevel): Include rs6000-modes.h.
        (TARGET_LONG_DOUBLE_128): Change the meaning of
        rs6000_long_double_size so that 126..128 selects an appropriate
        128-bit floating point type.
        (LONG_DOUBLE_TYPE_SIZE): Update comment.
        * config/rs6000/rs6000.md (trunciftf2): Correct the modes of the
        source and destination to match the standard usage.
        (truncifkf2): Likewise.
        (copysign<mode>3, IEEE iterator): Rework copysign of float128 on
        ISA 2.07 to use an explicit clobber, instead of passing in a
        temporary.
        (copysign<mode>3_soft): Likewise.

        Back port from trunk
        2018-06-08  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.c (rs6000_passes_ieee128): Protect with #if
        TARGET_ELF.

        Back port from trunk
        2018-06-04  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/rs6000.c (rs6000_passes_ieee128): New boolean to
        track if we pass or return IEEE 128-bit floating point.
        (ieee128_mangling_gcc_8_1): New boolean to say whether to generate
        C++ mangling that is compatible with GCC 8.1.
        (TARGET_ASM_GLOBALIZE_DECL_NAME): Override target hook.
        (init_cumulative_args): Note if we pass or return IEEE 128-bit
        floating point types.
        (rs6000_function_arg_advance_1): Likewise.
        (rs6000_mangle_type): Optionally generate mangled names that match
        what GCC 8.1 generated for IEEE 128-bit floating point types.
        (rs6000_globalize_decl_name): If we have an external function that
        passes or returns IEEE 128-bit types, generate a weak reference
        from the mangled name used in GCC 8.1 to the current mangled
        name.
        (rs6000_init_builtins): Make __ibm128 use the long double type if
        long double is IBM extended double.  Make __float128 use the long
        double type if long double is IEEE 128-bit.

        PR target/85657
        * config/rs6000/rs6000-builtin.def (BU_IBM128_2): New helper
        macro for __ibm128 built-in functions.
        (PACK_IF): Add __ibm128 pack/unpack functions.
        (UNPACK_IF): Likewise.
        * config/rs6000/rs6000.c (rs6000_builtin_mask_calculate): Do not
        enable long double built-in functions if long double is IEEE
        128-bit floating point.
        (rs6000_invalid_builtin): Update long double built-in function
        error message.
        (rs6000_expand_builtin): For PACK_IF and UNPACK_IF built-in
        functions, adjust the built-in function to use the long double
        built-in function if __ibm128 and long double are the same type.
        * doc/extend.texi (PowerPC builtins): Update documention for
        __builtin_{,un}pack_longdouble.  Add documentation for
        __builtin_{,un}pack_ibm128.

        Back port from trunk
        2018-06-01  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (rs6000_mangle_type): Change the mangling of
        the 128-bit floating point types.  Fix function comment.

2018-06-22  Michael Meissner  <meissner@linux.ibm.com>

        Back port from trunk
        2018-05-21  Michael Meissner  <meissner@linux.ibm.com>

        PR target/85657
        * config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): Do not
        define __ibm128 as long double.
        * config/rs6000/rs6000.c (rs6000_init_builtins): Create __ibm128
        as a distinct type with IEEE 128-bit floating point is supported.
        (init_float128_ieee): Fix up conversions between IFmode and IEEE
        128-bit types to use the correct functions.
        (rs6000_expand_float128_convert): Use explicit FLOAT_EXTEND to
        convert between 128-bit floating point types that have different
        modes but the same representation, instead of using gen_lowpart to
        makean alias.
        * config/rs6000/rs6000.md (IFKF): New iterator for IFmode and
        KFmode.
        (IFKF_reg): New attributes to give the register constraints for
        IFmode and KFmode.
        (extend<mode>tf2_internal): New insns to mark an explicit
        conversion between 128-bit floating point types that have a
        different mode but share the same representation.

2018-06-22  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR target/85994
        * config/i386/sol2.h (CPP_SPEC): Don't pass -P for
        -x assembler-with-cpp.

2018-06-21  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        Backported from mainline
        2018-06-15  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config.gcc (riscv*-*-elf* | riscv*-*-rtems*): Use custom
        multilibs for *-*-rtems*.
        * config/riscv/t-rtems: New file.

2018-06-20  Jakub Jelinek  <jakub@redhat.com>

        Backported from mainline
        2018-06-16  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/86108
        * bb-reorder.c (create_forwarder_block): Renamed to ...
        (create_eh_forwarder_block): ... this.  Split OLD_BB after labels and
        jump from new landing pad to the second part.
        (sjlj_fix_up_crossing_landing_pad, dw2_fix_up_crossing_landing_pad):
        Adjust callers.

2018-06-20  Jakub Jelinek  <jakub@redhat.com>

        PR debug/86194
        * var-tracking.c (use_narrower_mode_test): Check if shift amount can
        be narrowed.

        PR tree-optimization/86231
        * tree-vrp.c (union_ranges): For (  [  )  ] or (   )[   ] range and
        anti-range don't overwrite *vr0min before using it to compute *vr0max.

2018-06-19  Max Filippov  <jcmvbkbc@gmail.com>

        Backport from mainline
        2018-06-19  Max Filippov  <jcmvbkbc@gmail.com>

        * config/xtensa/xtensa.md (UNSPEC_FRAME_BLOCKAGE): New unspec
        constant.
        (allocate_stack, frame_blockage, *frame_blockage): New patterns.

2018-06-19  Eric Botcazou  <ebotcazou@adacore.com>

        * gimplify.c (gimplify_init_constructor): Really never clear for an
        incomplete constructor if CONSTRUCTOR_NO_CLEARING is set.

2018-06-18  Martin Sebor  <msebor@redhat.com>

        PR c/82063
        * calls.c (alloc_max_size): Correct a logic error/typo.
        Treat excessive arguments as infinite.  Warn for invalid arguments.
        * doc/invoke.texi (-Walloc-size-larger-than): Update.

2018-06-16  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/86095
        * common.opt (Wunsafe-loop-optimizations): Add Ignore, remove Var,
        documented as preserved for backward compatibility only.
        * doc/invoke.texi: Remove -Wunsafe-loop-optimizations documentation.

2018-06-15  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/85878
        * expr.c (expand_assignment): Remove now redundant COMPLEX_MODE_P
        check from first store_expr, use to_mode instead of GET_MODE (to_rtx).
        Only call store_expr for halves if the mode is the same.

        PR middle-end/86123
        * match.pd ((X / Y) == 0 -> X < Y): Don't transform complex divisions.
        Fix up comment formatting.

2018-06-14  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/86122
        * match.pd ((A +- CST1) +- CST2): Punt if last resort
        unsigned_type_for returns NULL.

        PR target/85945
        * lower-subreg.c (find_decomposable_subregs): Don't decompose float
        subregs of multi-word pseudos unless the float mode has word size.

2018-06-14  Richard Biener  <rguenther@suse.de>

        PR middle-end/86139
        * tree-vect-generic.c (build_word_mode_vector_type): Remove
        duplicate and harmful type_hash_canon.
        * tree.c (type_hash_canon): Assert we didn't find ourselves.

2018-06-14  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        Backport from mainline
        2018-06-14  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/rtems.h (STDINT_LONG32): Define.

2018-05-05  Roland McGrath  <mcgrathr@google.com>

        PR other/77609
        * varasm.c (default_section_type_flags): Set SECTION_NOTYPE for
        any section for which we don't know a specific type it should have,
        regardless of name.  Previously this was done only for the exact
        names ".init_array", ".fini_array", and ".preinit_array".
        (default_elf_asm_named_section): Add comment about
        relationship with default_section_type_flags and SECTION_NOTYPE.
        (get_section): Don't consider it a type conflict if one side has
        SECTION_NOTYPE and the other doesn't, as long as neither has the
        SECTION_BSS et al used in the default_section_type_flags logic.

2018-06-13  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86114
        * gimple-fold.c (gimple_fold_builtin_strlen): Only handle LHS
        of integer types.
        * tree-ssa-strlen.c (maybe_set_strlen_range): Same.

2018-06-13  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/86048
        * config/i386/winnt.c (i386_pe_seh_cold_init): Do not emit negative
        offsets for register save directives.  Emit a second batch of save
        directives, if need be, when the function accesses prior frames.

2018-06-11  Jason Merrill  <jason@redhat.com>

        PR c++/80485 - inline function non-zero address.
        * symtab.c (nonzero_address): Check DECL_COMDAT.

2018-06-11  Peter Bergner  <bergner@vnet.ibm.com>

        Backport from mainline
        2018-06-08  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/85755
        * config/rs6000/rs6000.c (mem_operand_gpr): Enable PRE_INC and PRE_DEC
        addresses.

2018-06-11  Segher Boessenkool  <segher@kernel.crashing.org>

        Backport from trunk
        2018-06-11  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/85755
        * config/rs6000/rs6000.md (*movdi_internal32): Put constraint modifiers
        on the correct operand.
        (*movdi_internal64): Ditto.

2018-06-08  Carl Love  <cel@us.ibm.com>

        Backport from mainline
        * gcc/config/rs6000/vsx.md (vextract_fp_from_shorth,
        vextract_fp_from_shortl): Add BE support.

2018-06-08  Carl Love  <cel@us.ibm.com>

        Backport from mainline
        * gcc/config/rs6000/vsx.md (first_match_index_<mode>):
        Calculate index using natureal element order.
        (first_match_or_eos_index_<mode>):
        Calculate index using natural element order.
        (first_match_index_<mode>):
        Calculate index using natural element order.
        (first_match_or_eos_index_<mode>):
        Calculate index using natural order.
        (define_insn vclzlsbb): Change to define_insn vclzlsbb_<mode>.
        for BE and LE modes.
        * gcc/config/rs6000/rs6000-c.c: Rename P9V_BUILTIN_VCLZLSBB,
        P9V_BUILTIN_VCLZLSBB_V16QI.
        * gcc/config/rs6000/rs6000-builtin.def: Make VCLZLSBB mode
        specific.

2018-06-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        Backport from mainline
        2018-06-05  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/81497
        * config/arm/arm-builtins.c (arm_type_qualifiers): Add
        qualifier_void_pointer and qualifier_const_void_pointer.
        (arm_ldc_qualifiers, arm_stc_qualifiers): Use the above.
        (arm_init_builtins): Handle the above.
        * config/arm/arm_acle.h (__arm_cdp, __arm_ldc, __arm_ldcl, __arm_stc,
        __arm_stcl, __arm_mcr, __arm_cdp2, __arm_ldc2, __arm_ldcl2, __arm_stc2,
        __arm_stcl2,__arm_mcr2, __arm_mcrr, __arm_mcrr2): Remove return for
        void intrinsics.

2018-06-07  Uros Bizjak  <ubizjak@gmail.com>

        PR target/85684
        * config/i386/i386.c (ix86_expand_builtin) <case IX86_BUILTIN_RDPID>:
        Generate SImode target register for null target.
        <case IX86_BUILTIN_XGETBV>: Ditto.
        <case IX86_BUILTIN_XSETBV>: Optimize LSHIFTRT generation.
        * config/i386/xsaveintrin.h (_xgetbv): Add missing return.

2018-06-07  Peter Bergner  <bergner@vnet.ibm.com>

        Backport from mainline
        2018-06-06  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/63177
        * /config/rs6000/rs6000.h (ASM_CPU_SPEC): Add support for -mpower9.
        Don't handle -mcpu=power8 if -mpower9-vector is also used.

2018-06-06  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-06-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/86038
        * tracer.c (find_best_successor): Check probability for
        being initialized, bail out if not.

        2018-05-30  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85964
        * tracer.c (better_p): Drop initialized count check, we only
        call the function with initialized counts now.
        (find_best_successor): Do find a best edge if one
        has uninitialized count.
        (find_best_predecessor): Likewise.  Do BB frequency check only
        if count is initialized.

        2018-05-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85934
        * tree-vect-generic.c (expand_vector_operations_1): Hoist
        vector boolean check before scalar optimization.

        2018-05-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85863
        * tree-vect-stmts.c (vect_is_simple_cond): Only widen invariant
        comparisons when vectype is specified.
        (vectorizable_condition): Do not specify vectype for
        vect_is_simple_cond when SLP vectorizing.

2018-06-05  Andreas Krebbel  <krebbel@linux.ibm.com>

        Backport from mainline
        2018-06-05  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/s390/s390-builtin-types.def: Add void function type.
        * config/s390/s390-builtins.def: Use the function type for the
        tbeginc builtin.

2018-06-04  Martin Sebor  <msebor@redhat.com>

        PR c/85623
        * calls.c (maybe_warn_nonstring_arg): Use string length to set
        or ajust the presumed bound on an operation to avoid unnecessary
        warnings.

2018-06-04  Richard Earnshaw  <rearnsha@arm.com>

        PR target/86003
        * config/arm/arm-cpus.in (ALL_QUIRKS): Add xscale feature to the list
        of bits to ignore when comparing architectures.

2018-06-04  Jakub Jelinek  <jakub@redhat.com>

        PR c++/86025
        * tree.c (inchash::add_expr): Handle IDENTIFIER_NODE.

2018-06-01  Bill Schmidt  <wschmidt@linux.ibm.com>

        PR tree-optimization/85712
        Backport from mainline:
        2018-05-23  Bill Schmidt  <wschmidt@linux.ibm.com>

        PR tree-optimization/85712
        * gimple-ssa-strength-reduction.c (struct slsr_cand_d): Add
        first_interp field.
        (alloc_cand_and_find_basis): Initialize first_interp field.
        (slsr_process_mul): Modify first_interp field.
        (slsr_process_add): Likewise.
        (slsr_process_cast): Modify first_interp field for each new
        interpretation.
        (slsr_process_copy): Likewise.
        (dump_candidate): Dump first_interp field.
        (replace_mult_candidate): Process all interpretations, not just
        subsequent ones.
        (replace_rhs_if_not_dup): Likewise.
        (replace_one_candidate): Likewise.

        Backport from mainline:
        2018-05-25  Bill Schmidt  <wschmidt@linux.ibm.com>

        PR tree-optimization/85712
        * gimple-ssa-strength-reduction.c (replace_one_candidate): Skip if
        this candidate has already been replaced in-situ by a copy.

2018-05-31  Uros Bizjak  <ubizjak@gmail.com>

        PR target/85950
        * config/i386/i386.md (l<rounding_insn><MODEF:mode><SWI48:mode>2):
        Enable for TARGET_SSE4_1 and generate rounds{s,d} and cvtts{s,d}2si{,q}
        sequence.
        (sse4_1_round<mode>2): Use nonimmediate_operand
        for operand 1 predicate.

2018-05-31  Jakub Jelinek  <jakub@redhat.com>

        PR target/85984
        * bb-reorder.c (pass_partition_blocks::gate): Return false for
        functions with naked attribute.

2018-05-31  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85829
        * config/i386/x86-tune.def: Re-enable partial_reg_dependency
        and movx for Haswell.

2018-05-30  Jakub Jelinek  <jakub@redhat.com>

        Backported from mainline
        2018-05-14  Jakub Jelinek  <jakub@redhat.com>

        PR target/85756
        * config/i386/i386.md: Disallow non-commutative arithmetics in
        last twpeephole for mem {+,-,&,|,^}= x; mem != 0 after cmpelim
        optimization.  Use COMMUTATIVE_ARITH_P test rather than != MINUS
        in the peephole2 before it.

        2018-05-08  Jakub Jelinek  <jakub@redhat.com>

        PR target/85683
        * config/i386/i386.md: Add peepholes for mem {+,-,&,|,^}= x; mem != 0
        after cmpelim optimization.

2018-05-28  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2018-05-26  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85900
        PR target/85345
        * varasm.c (assemble_alias): Lookup ifunc attribute on error.

        2018-05-24  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85900
        PR target/85345
        * varasm.c (assemble_alias): Check ifunc_resolver only on
        FUNCTION_DECL.

        2018-05-22  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85345
        * cgraph.h (cgraph_node::create): Set ifunc_resolver for ifunc
        attribute.
        (cgraph_node::create_alias): Likewise.
        (cgraph_node::get_availability): Check ifunc_resolver instead
        of looking up ifunc attribute.
        * cgraphunit.c (maybe_diag_incompatible_alias): Likewise.
        * varasm.c (do_assemble_alias): Likewise.
        (assemble_alias): Likewise.
        (default_binds_local_p_3): Likewise.
        * cgraph.h (cgraph_node): Add ifunc_resolver.
        (cgraph_node::only_called_directly_or_aliased_p): Return false
        for IFUNC resolver.
        * lto-cgraph.c (input_node): Set ifunc_resolver for ifunc
        attribute.
        * symtab.c (symtab_node::verify_base): Verify that ifunc_resolver
        is equivalent to lookup_attribute ("ifunc", DECL_ATTRIBUTES (decl)).
        (symtab_node::binds_to_current_def_p): Check ifunc_resolver
        instead of looking up ifunc attribute.

2018-05-27  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa-linux.h (NEED_INDICATE_EXEC_STACK): Define to 0.

2018-05-25  Richard Biener  <rguenther@suse.de>

        PR c++/85912
        * tree-dump.c (dequeue_and_dump): Remove access to removed
        operand 2 of a SWITCH_EXPR.

2018-05-24  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/sse.md (cvtusi2<ssescalarmodesuffix>64<round_name>):
        Add {q} suffix to insn mnemonic.

2018-05-24  Uros Bizjak  <ubizjak@gmail.com>

        PR target/85903
        * config/i386/sse.md (movdi_to_sse): Do not generate pseudo
        when memory input operand is handled.

2018-05-23  Bin Cheng  <bin.cheng@arm.com>

        Backport from mainline
        2018-05-17  Bin Cheng  <bin.cheng@arm.com>
            Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85793
        * tree-vect-stmts.c (vectorizable_load): Handle 1 element-wise load
        for VMAT_ELEMENTWISE.

2018-05-23  Richard Biener  <rguenther@suse.de>

        PR middle-end/85874
        * tree-data-ref.c (create_runtime_alias_checks): Defer
        and ignore overflow warnings.

2018-05-23  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2018-05-23  Yury Gribov  <tetra2005@gmail.com>

        PR tree-optimization/85822
        * tree-vrp.c (is_masked_range_test): Fix handling of negative
        constants.

2018-05-23  Martin Liska  <mliska@suse.cz>

        Backport from mainline
        2018-05-11  Martin Liska  <mliska@suse.cz>

        PR sanitizer/85556
        * doc/extend.texi: Document LLVM style format for no_sanitize
        attribute.

2018-05-22  Martin Sebor  <msebor@redhat.com>

        PR middle-end/85643
        * calls.c (get_attr_nonstring_decl): Handle MEM_REF.

2018-05-22  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/85814
        * tree-ssa-strlen.c (get_stridx_plus_constant): Cope with
        a null return from get_strinfo when unsharing the next
        strinfo in the chain.

2018-05-21  Pat Haugen  <pthaugen@us.ibm.com>

        Backport from mainline
        2018-05-17  Pat Haugen  <pthaugen@us.ibm.com>
                    Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/85698
        * config/rs6000/rs6000.c (rs6000_output_move_128bit): Check dest operand.

2018-05-18  Toon Moene  <toon@moene.org>

        * doc/invoke.texi: Move -floop-unroll-and-jam documentation
        directly after that of -floop-interchange. Indicate that both
        options are enabled by default when specifying -O3. 

2018-05-11  Martin Jambor  <mjambor@suse.cz>

        PR ipa/85655
        * ipa-cp.c (intersect_with_plats): Check that the lattice contains
        single const.

2018-05-11  Richard Earnshaw  <rearnsha@arm.com>

        PR target/85733
        * config/arm/arm-cpus.in (fgroup ARMv6m): Add be8 feature.

2018-05-11  Richard Earnshaw  <rearnsha@arm.com>

        PR target/85606
        * config/arm/arm-cpus.in: Add comment that ARMv6-m and ARMv6S-m are now
        equivalent.
        (cortex-m0): Use armv6s-m isa.
        (cortex-m0plus): Likewise.
        (cortex-m1): Likewise.
        (cortex-m0.small-multiply): Likewise.
        (cortex-m0plus.small-multiply): Likewise.
        (cortex-m1.small-multiply): Likewise.

2018-05-09  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/85638
        * bb-reorder.c: Include common/common-target.h.
        (create_forwarder_block): New function extracted from...
        (fix_up_crossing_landing_pad): ...here.  Rename into...
        (dw2_fix_up_crossing_landing_pad): ...this.
        (sjlj_fix_up_crossing_landing_pad): New function.
        (find_rarely_executed_basic_blocks_and_crossing_edges): In SJLJ mode,
        call sjlj_fix_up_crossing_landing_pad if there are incoming EH edges
        from both partitions and exit the loop after one iteration.

2018-05-08  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-05-04  Richard Biener  <rguenther@suse.de>

        PR middle-end/85588
        * fold-const.c (negate_expr_p): Restrict negation of operand
        zero of a division to when we know that can happen without
        overflow.
        (fold_negate_expr_1): Likewise.

        2018-05-03  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85615
        * tree-ssa-threadupdate.c (thread_block_1): Only allow exits
        to loops not nested in BBs loop father to avoid creating multi-entry
        loops.

        2018-05-02  Richard Biener  <rguenther@suse.de>

        PR middle-end/85567
        * gimplify.c (gimplify_save_expr): When in SSA form allow
        SAVE_EXPRs to compute to SSA vars.

        2018-05-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85597
        * tree-vect-stmts.c (vectorizable_operation): For ternary SLP
        do not use split vect_get_vec_defs call but call vect_get_slp_defs
        directly.

2018-05-08  Richard Earnshaw  <rearnsha@arm.com>

        PR target/85658
        * config/arm/parsecpu.awk (check_cpu): Fix operator precedence.
        (check_arch): Likewise.
        (check_fpu): Return the result rather than printing it.
        (end arch): Fix operator precedence.
        (end cpu): Likewise.
        (END): Print the result from check_fpu.

2018-05-08  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-05-04  Richard Biener  <rguenther@suse.de>

        * bb-reorder.c (sanitize_hot_paths): Release hot_bbs_to_check.
        * gimple-ssa-store-merging.c
        (imm_store_chain_info::output_merged_store): Remove redundant create,
        release split_store vector contents on failure.
        * tree-vect-slp.c (vect_schedule_slp_instance): Avoid leaking
        scalar stmt vector on cache hit.

        2018-05-04  Richard Biener  <rguenther@suse.de>

        PR middle-end/85627
        * tree-complex.c (tree_lower_complex): Handle removed blocks.

2018-05-07  Chung-Ju Wu  <jasonwucj@gmail.com>

        Backport from mainline.
        2018-04-25  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-predicates.c (nds32_can_use_bclr_p): Mask with
        GET_MODE_MASK before any checking.
        (nds32_can_use_bset_p): Likewise.
        (nds32_can_use_btgl_p): Likewise.

2018-05-07  Chung-Ju Wu  <jasonwucj@gmail.com>

        Backport from mainline.
        2018-04-25  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-doubleword.md: New define_split pattern for
        illegal register number.

2018-05-07  Chung-Ju Wu  <jasonwucj@gmail.com>

        Backport from mainline.
        2018-04-25  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_print_operand): Set op_value ealier.

2018-05-07  Chung-Ju Wu  <jasonwucj@gmail.com>

        Backport from mainline.
        2018-04-25  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (ASM_APP_ON): Add missing newline character.

2018-05-06  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85659
        * cfgexpand.c (expand_asm_stmt): Don't create a temporary if
        the type is addressable.  Don't force op into register if it has
        BLKmode.

2018-05-04  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        Backport from trunk.
        2018-04-27  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/85512
        * config/aarch64/constraints.md (Usg): Limit to 31.
        (Usj): Limit to 63.

2018-05-02  Jakub Jelinek  <jakub@redhat.com>

        * BASE-VER: Set to 8.1.1.

2018-05-02  Release Manager

        * GCC 8.1.0 released.

2018-05-02  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/85586
        * tree-vect-data-refs.c (vect_analyze_data_ref_dependence): Only
        exit early for statements in the same group if the accesses are
        not strided.

2018-05-01  Jakub Jelinek  <jakub@redhat.com>

        PR web/85578
        * doc/install.texi2html: Replace _002d with - and _002a with * in
        generated html files using sed.

2018-04-27  Martin Jambor  <mjambor@suse.cz>

        PR ipa/85549
        * ipa-cp.c (find_aggregate_values_for_callers_subset): Make sure
        the jump function allows for passing through aggregate values.

2018-04-27  Jeff Law  <law@redhat.com>

        * config.gcc: Mark tile* targets as deprecated/obsolete.

2018-04-27  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/85529
        * tree-ssa-reassoc.c (optimize_range_tests_var_bound): Add FIRST_BB
        argument.  Don't call get_nonzero_bits if opcode is ERROR_MARK_NODE,
        rhs2 def stmt's bb is dominated by first_bb and it isn't an obvious
        zero extension or masking of the MSB bit.
        (optimize_range_tests): Add FIRST_BB argument, pass it through
        to optimize_range_tests_var_bound.
        (maybe_optimize_range_tests, reassociate_bb): Adjust
        optimize_range_tests callers.

2018-04-26  Richard Biener  <rguenther@suse.de>
            Jakub Jelinek  <jakub@redhat.com>

        * cgraph.h (symbol_table): Just declare debug method here.
        * symtab.c (symbol_table::debug): Define.

2018-04-26  Jonathan Wakely  <jwakely@redhat.com>

        * doc/invoke.texi (-Wreturn-type): Document default status for C++.

2018-04-25  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2018-04-25  Sebastian Peryt  <sebastian.peryt@intel.com>

        PR target/85473
        * config/i386/i386.c (ix86_expand_builtin): Change memory
        operand to XI, extend p0 to Pmode.
        * config/i386/i386.md: Change unspec volatile and operand
        1 mode to XI, change operand 0 mode to P.

2018-04-25  Jakub Jelinek  <jakub@redhat.com>

        * DEV-PHASE: Set to prerelease.

2018-04-24  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (init_float128_ieee): Fix spelling mistakes
        in __abskf2 and __powikf2.

2018-04-24  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/85512
        * config/aarch64/constraints.md (Usg, Usj): New constraints.
        * config/aarch64/iterators.md (cmode_simd): New mode attribute.
        * config/aarch64/aarch64.md (*aarch64_ashr_sisd_or_int_<mode>3):
        Use the above on operand 2.  Reindent.
        (*aarch64_lshr_sisd_or_int_<mode>3): Likewise.

2018-04-24  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85485
        * common/config/i386/i386-common.c (ix86_handle_option): Don't
        handle OPT_mcet.
        * config/i386/i386.opt (mcet): Removed.
        * doc/install.texi: Remove -mcet documentation.
        * doc/invoke.texi: Likewise.

2018-04-24  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85485
        * doc/install.texi: Remove -mcet from bootstrap-cet.

2018-04-24  Jakub Jelinek  <jakub@redhat.com>

        PR target/85511
        * config/i386/i386.c (ix86_init_mmx_sse_builtins): Don't define
        __builtin_ia32_readeflags_u32 and __builtin_ia32_writeeflags_u32
        if TARGET_64BIT.

        PR target/85503
        * config/rs6000/rs6000-p8swap.c (const_load_sequence_p): Punt if
        const_vector is not CONST_VECTOR or SYMBOL_REF for a constant pool
        containing a CONST_VECTOR.

2018-04-24  Cesar Philippidis  <cesar@codesourcery.com>

        * doc/install.texi: Update newlib dependency for nvptx.

2018-04-24  Jakub Jelinek  <jakub@redhat.com>

        PR target/85508
        * config/i386/i386.c (ix86_expand_vector_init_one_var): Use UINTVAL
        instead of INTVAL when shifting x left.

2018-04-24  Andreas Krebbel  <krebbel@linux.ibm.com>

        PR tree-optimization/85478
        * tree-vect-loop.c (vect_analyze_loop_2): Do not call
        vect_grouped_store_supported for single element vectors.

2018-04-24  Richard Biener  <rguenther@suse.de>

        PR target/85491
        * config/i386/i386.c (ix86_add_stmt_cost): Restrict strided
        load cost increase to the case of non-constant step.

2018-04-24  Jakub Jelinek  <jakub@redhat.com>

        PR target/84828
        * reg-stack.c (move_for_stack_reg): Don't fail assertion about dead
        destination if any_malformed_asm.

2018-04-23  Eric Botcazou  <ebotcazou@adacore.com>

        PR middle-end/85496
        * expr.c (store_field): In the bitfield case, if the value comes from
        a function call and is returned in registers by means of a PARALLEL,
        do not change the mode of the temporary unless BLKmode and VOIDmode.

2018-04-23  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/85423
        * sel-sched-ir.c (has_dependence_note_mem_dep): Only discard
        dependencies to debug insns when the previous insn is non-debug.

2018-04-23  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.md ("vunspec"): Delete it, unify all the unspec
        enums into a single definition.
        (fls): Fix predicates and printing.
        (seti): Likewise.

2018-04-23  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-protos.h (check_if_valid_sleep_operand): Remove.
        * config/arc/arc.c (arc_expand_builtin): Sleep accepts registers
        and short u6 immediate.
        (check_if_valid_sleep_operand): Remove.
        * config/arc/arc.md (Sleep): Accepts registers and u6 immediates.

2018-04-22  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_compute_stack_frame): Consider
        flag_always_save_lp condition.
        * config/nds32/nds32.opt (malways-save-lp): New option.

2018-04-22  Shiva Chen  <shiva0217@gmail.com>

        * config/nds32/nds32-protos.h (nds32_use_load_post_increment): Declare.
        * config/nds32/nds32.c (nds32_use_load_post_increment): New.
        * config/nds32/nds32.h
        (USE_LOAD_POST_INCREMENT, USE_LOAD_POST_DECREMENT): Define.
        (USE_STORE_POST_INCREMENT, USE_STORE_POST_DECREMENT): Define.

2018-04-22  Shiva Chen  <shiva0217@gmail.com>

        * config/nds32/nds32-protos.h (nds32_ls_333_p): Remove.
        * config/nds32/nds32.c (nds32_ls_333_p): Remove.

2018-04-22  Shiva Chen  <shiva0217@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-protos.h (nds32_case_vector_shorten_mode):
        Declare.
        * config/nds32/nds32.c (nds32_case_vector_shorten_mode): New function.
        * config/nds32/nds32.h (CASE_VECTOR_SHORTEN_MODE): Modify.

2018-04-22  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_compute_stack_frame): Fix wrong value.

2018-04-22  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-protos.h (nds32_data_alignment,
        nds32_local_alignment): Declare.
        * config/nds32/nds32.c (nds32_data_alignment, nds32_constant_alignment,
        nds32_local_alignment): New functions.
        (TARGET_CONSTANT_ALIGNMENT): Define.
        * config/nds32/nds32.h (DATA_ALIGNMENT, LOCAL_ALIGNMENT): Define.

2018-04-22  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c
        (TARGET_HARD_REGNO_MODE_OK): Move to the bottom of file.
        (TARGET_MODES_TIEABLE_P): Likewise.

2018-04-22  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_asm_file_start): Display optimization
        level Ofast and Og.

2018-04-22  Monk Chiang  <sh.chiang04@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/constants.md (unspec_volatile_element): Add enum values
        for unaligned access.
        * config/nds32/nds32-intrinsic.c: Implementation of expanding
        unaligned access.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32_intrinsic.h: Likewise.
        * config/nds32/nds32.h (nds32_builtins): Likewise.
        * config/nds32/nds32.opt (munaligned-access): New option.
        * config/nds32/nds32.c (nds32_asm_file_start): Display
        flag_unaligned_access status.

2018-04-20  Kito Cheng  <kito.cheng@gmail.com>

        * config/riscv/elf.h (LINK_SPEC): Pass --no-relax if
        -mno-relax is present.
        * config/riscv/linux.h (LINK_SPEC): Ditto.

2018-04-20  Martin Sebor  <msebor@redhat.com>

        PR c/85365
        * gimple-fold.c (gimple_fold_builtin_strcpy): Suppress -Wrestrict
        for null pointers.
        (gimple_fold_builtin_stxcpy_chk): Same.
        * gimple-ssa-warn-restrict.c (check_bounds_or_overlap): Same.

2018-04-20  Michael Meissner  <meissner@linux.ibm.com>

        PR target/85456
        * config/rs6000/rs6000.c (init_float128_ieee): Add support to call
        __powikf2 when long double is IEEE 128-bit.

2018-04-20  Kito Cheng  <kito.cheng@gmail.com>

        * config/riscv/riscv.c (riscv_first_stack_step): Round up min
        step to make sure stack always aligned.

2018-04-20  Carl Love  <cel@us.ibm.com>

        PR target/83402
        * config/rs6000/rs6000-c.c (rs6000_gimple_fold_builtin): Add
        size check for arg0.

2018-04-20  Nathan Sidwell  <nathan@codesourcery.com>
            Tom de Vries  <tom@codesourcery.com>

        PR target/85445
        * config/nvptx/nvptx.c (nvptx_emit_forking, nvptx_emit_joining):
        Emit insns for calls too.
        (nvptx_find_par): Always look for worker-level predecessor insn.
        (nvptx_propagate): Add is_call parm, return bool.  Copy frame for
        calls.
        (nvptx_vpropagate, nvptx_wpropagate): Adjust.
        (nvptx_process_pars): Propagate frames for calls.

2018-04-20  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85469
        * common/config/i386/i386-common.c (OPTION_MASK_ISA_IBT_SET):
        Removed.
        (OPTION_MASK_ISA_IBT_UNSET): Likewise.
        (ix86_handle_option): Don't handle OPT_mibt.
        * config/i386/cet.h: Check __CET__ instead of __IBT__ and
        __SHSTK__.
        * config/i386/driver-i386.c (host_detect_local_cpu): Remove
        has_ibt and ibt.
        * config/i386/i386-c.c (ix86_target_macros_internal): Don't
        check OPTION_MASK_ISA_IBT nor flag_cf_protection.
        (ix86_target_macros): Define __CET__ with flag_cf_protection
        for -fcf-protection.
        * config/i386/i386.c (isa2_opts): Remove -mibt.
        * config/i386/i386.h (TARGET_IBT): Removed.
        (TARGET_IBT_P): Likewise.
        (ix86_valid_target_attribute_inner_p): Don't check OPT_mibt.
        * config/i386/i386.md (nop_endbr): Don't check TARGET_IBT.
        * config/i386/i386.opt (mcet): Update help message.
        (mshstk): Likewise.
        (mibt): Removed.
        * doc/invoke.texi: Remove -mibt.  Document __CET__.  Document
        -mcet as an alias for -mshstk.

2018-04-20  Richard Biener <rguenther@suse.de>

        PR middle-end/85475
        * match.pd ((X * CST) * Y -> (X * Y) * CST): Avoid exponential
        complexity by forcing a single use of the multiply operand.

2018-04-20  Martin Jambor  <mjambor@suse.cz>

        ipa/85449
        * ipa-cp.c (cgraph_edge_brings_value_p): Move check for self-feeding
        recursion dependency to only apply to non-clones.

2018-04-20  Martin Jambor  <mjambor@suse.cz>

        ipa/85447
        * ipa-cp.c (create_specialized_node): Check that clones of
        self-recursive edges exist during IPA-CP.

2018-04-19  Toon Moene  <toon@moene.org>

        * doc/invoke.texi: Add -floop-unroll-and-jam to options enabled
        by -O3. 

2018-04-19  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/85467
        * fold-const.c (fold_ternary_loc) <case BIT_FIELD_REF>: Use
        VECTOR_TYPE_P macro.  If type is vector type, VIEW_CONVERT_EXPR the
        VECTOR_CST element to type.

2018-04-19  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85397
        * config/i386/i386.h (STACK_SAVEAREA_MODE): New.
        * config/i386/i386.md (builtin_setjmp_setup): Removed.
        (builtin_longjmp): Likewise.
        (save_stack_nonlocal): New pattern.
        (restore_stack_nonlocal): Likewise.

2018-04-19  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85404
        * config/i386/cet.c (file_end_indicate_exec_stack_and_cet):
        Replace ASM_OUTPUT_LABEL with fprintf.

2018-04-19  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85417
        * config/i386/cet.c (file_end_indicate_exec_stack_and_cet):
        Check flag_cf_protection instead of TARGET_IBT and TARGET_SHSTK.
        * config/i386/i386-c.c (ix86_target_macros_internal): Also
        define __IBT__ and __SHSTK__ for -fcf-protection.
        * config/i386/i386.c (pass_insert_endbranch::gate): Don't check
        TARGET_IBT.
        (ix86_trampoline_init): Likewise.
        (x86_output_mi_thunk): Likewise.
        (ix86_notrack_prefixed_insn_p): Likewise.
        (ix86_option_override_internal): Don't disallow -fcf-protection.
        * config/i386/i386.md (rdssp<mode>): Also enable for
        -fcf-protection.
        (incssp<mode>): Likewise.
        (nop_endbr): Likewise.
        * config/i386/i386.opt (mcet): Change help message to built-in
        functions only.
        (mibt): Likewise.
        (mshstk): Likewise.
        * doc/invoke.texi: Remove -mcet, -mibt and -mshstk condition
        on -fcf-protection.  Change -mcet, -mibt and -mshstk to only
        enable CET built-in functions.

2018-04-19  Sebastian Peryt  <sebastian.peryt@intel.com>

        * common/config/i386/i386-common.c 
        (OPTION_MASK_ISA_MOVDIRI_SET, OPTION_MASK_ISA_MOVDIR64B_SET,
        OPTION_MASK_ISA_MOVDIRI_UNSET,
        OPTION_MASK_ISA_MOVDIR64B_UNSET): New defines.
        (ix86_handle_option): Handle -mmovdiri and -mmovdir64b.
        * config.gcc (movdirintrin.h): New header.
        * config/i386/cpuid.h (bit_MOVDIRI,
        bit_MOVDIR64B): New bits.
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect -mmovdiri
        and -mmvodir64b.
        * config/i386/i386-builtin-types.def ((VOID, PUNSIGNED, UNSIGNED),
        (VOID, PVOID, PCVOID)): New function types.
        * config/i386/i386-builtin.def (__builtin_ia32_directstoreu_u32,
        __builtin_ia32_directstoreu_u64,
         __builtin_ia32_movdir64b): New builtins.
        * config/i386/i386-c.c (__MOVDIRI__, __MOVDIR64B__): New.
        * config/i386/i386.c (ix86_target_string): Added -mmovdir64b
        and -mmovdiri.
        (ix86_valid_target_attribute_inner_p): Ditto.
        (ix86_expand_special_args_builtin): Added VOID_FTYPE_PUNSIGNED_UNSIGNED
        and VOID_FTYPE_PUNSIGNED_UNSIGNED.
        (ix86_expand_builtin): Expand IX86_BUILTIN_MOVDIR64B.
        * config/i386/i386.h (TARGET_MOVDIRI, TARGET_MOVDIRI_P,
        TARGET_MOVDIR64B, TARGET_MOVDIR64B_P): New.
        * config/i386/i386.md (UNSPECV_MOVDIRI, UNSPECV_MOVDIR64B): New.
        (movdiri<mode>, movdir64b_<mode>): New.
        * config/i386/i386.opt: Add -mmovdiri and -mmovdir64b.
        * config/i386/immintrin.h: Include movdirintrin.h.
        * config/i386/movdirintrin.h: New file.
        * doc/invoke.texi: Added -mmovdiri and -mmovdir64b.

2018-04-19  Richard Biener  <rguenther@suse.de>

        PR middle-end/85455
        * cfg.c (clear_bb_flags): When loop state says we have
        marked irreducible regions also preserve BB_IRREDUCIBLE_LOOP.

2018-04-19  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84737
        * tree-vect-data-refs.c (vect_copy_ref_info): New function
        copying restrict info.
        (vect_setup_realignment): Use it.
        * tree-vectorizer.h (vect_copy_ref_info): Declare.
        * tree-vect-stmts.c (vectorizable_store): Copy ref info from
        the first DR to all generated stores.
        (vectorizable_load): Likewise for loads.

2018-04-19  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/85446
        * match.pd ((intptr_t) x eq/ne CST to x eq/ne (typeof x) cst): Require
        the integral and pointer types to have the same precision.

        * doc/install.texi: Document --disable-cet being the default and
        --enable-cet=auto.

2018-04-18  Martin Liska  <mliska@suse.cz>

        * ipa-devirt.c (odr_subtypes_equivalent_p): Fix GNU coding
        style.

2018-04-18  Martin Liska  <mliska@suse.cz>

        Revert
        2018-03-02  Eric Botcazou  <ebotcazou@adacore.com>

        PR ipa/83983
        * ipa-devirt.c (odr_subtypes_equivalent_p): Get the ODR type of both
        arguments if they are comparable.

2018-04-18  Martin Liska  <mliska@suse.cz>

        Revert
        2018-03-13  Eric Botcazou  <ebotcazou@adacore.com>

        PR lto/84805
        * ipa-devirt.c (odr_subtypes_equivalent_p): Do not get the ODR type of
        incomplete types.

2018-04-18  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85388
        * config/i386/i386.c (ix86_expand_split_stack_prologue): Insert
        ENDBR after calling __morestack.

2018-04-18  David Malcolm  <dmalcolm@redhat.com>

        PR jit/85384
        * configure.ac (gcc-driver-name.h): Honor --with-gcc-major-version
        by using gcc_base_ver to generate a gcc_driver_version, and use
        it when generating GCC_DRIVER_NAME.
        * configure: Regenerate.

2018-04-18  Jakub Jelinek  <jakub@redhat.com>

        PR target/81084
        * config.gcc: Obsolete powerpc*-*-*spe*.

2018-04-17  Jakub Jelinek  <jakub@redhat.com>

        PR debug/84637
        * dbxout.c (dbxout_int): Perform negation in unsigned int type.
        (stabstr_D): Change type of unum from unsigned int to
        unsigned HOST_WIDE_INT.  Perform negation in unsigned HOST_WIDE_INT
        type.

2018-04-17  Jim Wilson  <jimw@sifive.com>

        PR 84856
        * config/riscv/riscv.c (riscv_compute_frame_info): Add calls to
        RISCV_STACK_ALIGN when using outgoing_args_size and pretend_args_size.
        Set arg_pointer_offset after using pretend_args_size.

2018-04-17  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/85431
        * dse.c (record_store): Ignore zero width stores.

        PR sanitizer/85230
        * asan.c (handle_builtin_stack_restore): Adjust comment.  Emit
        __asan_allocas_unpoison call and last_alloca_addr = new_sp before
        __builtin_stack_restore rather than after it.
        * builtins.c (expand_asan_emit_allocas_unpoison): Pass
        arg1 + (virtual_dynamic_stack_rtx - stack_pointer_rtx) as second
        argument instead of virtual_dynamic_stack_rtx.

2018-04-17  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-protos.h (rs6000_builtin_is_supported_p):
        New prototype.
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
        Add note to error message to explain internal mapping of overloaded
        built-in function name to non-overloaded built-in function name.
        * config/rs6000/rs6000.c (rs6000_builtin_is_supported_p): New
        function.

2018-04-17  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/85424
        * config/rs6000/rs6000.md (pack<mode>): Do not try handle a pack
        where the inputs overlap with the output.

2018-04-17  Jakub Jelinek  <jakub@redhat.com>

        * config/i386/sse.md (vec_extract_lo_<mode><mask_name>): Add
        (=v, v) alternative and explicit "memory" attribute.
        (vec_extract_lo_<mode><mask_name>): Likewise.  Also add
        "type", "prefix", "prefix_extra", "length_immediate" and "mode"
        attributes.
        (vec_extract_lo_<mode><mask_name>): Add (=v, v) alternative and use
        "sselog1" type instead of "sselog".
        (vec_extract_hi_<mode><mask_name>): Use "sselog1" type instead of
        "sselog".  Remove explicit "memory" attribute.
        (vec_extract_lo_v32hi): Add (=v, v) alternative and explicit "memory",
        "type", "prefix", "prefix_extra", "length_immediate" and "mode"
        attributes.
        (vec_extract_hi_v32hi): Merge all alternatives into one, use
        "sselog1" type instead of "sselog".  Remove explicit "memory"
        attribute.
        (vec_extract_hi_v16hi): Merge each pair of alternatives into one,
        use "sselog1" type instead of "sselog".  Remove explicit "memory"
        attribute.
        (vec_extract_lo_v64qi): Add (=v, v) alternative and explicit "memory",
        "type", "prefix", "prefix_extra", "length_immediate" and "mode"
        attributes.
        (vec_extract_hi_v64qi): Merge all alternatives into one, use
        "sselog1" type instead of "sselog".  Remove explicit "memory"
        attribute.
        (vec_extract_hi_v32qi): Merge each pair of alternatives into one,
        use "sselog1" type instead of "sselog".  Remove explicit "memory"
        attribute.

        PR target/85430
        * config/i386/i386.md (*ashlqi3_1_slp): Use alu1 type instead of alu.

        PR middle-end/85414
        * rtlhooks.c (gen_lowpart_if_possible): Don't call gen_lowpart_SUBREG
        on a SUBREG.

2018-04-17  Martin Jambor  <mjambor@suse.cz>

        PR ipa/85421
        * ipa-cp.c (create_specialized_node): Call
        expand_all_artificial_thunks if necessary.

2018-04-17  Martin Liska  <mliska@suse.cz>

        PR lto/85405
        * ipa-devirt.c (odr_types_equivalent_p): Remove trailing
        in message, remote space in between '_G' and '('.

2018-04-17  Jakub Jelinek  <jakub@redhat.com>

        PR target/85281
        * config/i386/sse.md (reduces<mode><mask_scalar_name>,
        avx512f_vmcmp<mode>3<round_saeonly_name>,
        avx512f_vmcmp<mode>3_mask<round_saeonly_name>,
        avx512f_sgetexp<mode><mask_scalar_name><round_saeonly_scalar_name>,
        avx512f_rndscale<mode><round_saeonly_name>,
        avx512dq_ranges<mode><mask_scalar_name><round_saeonly_scalar_name>,
        avx512f_vgetmant<mode><mask_scalar_name><round_saeonly_scalar_name>):
        Use %<iptr>2 instead of %2 for -masm=intel.
        (avx512f_vcvtss2usi<round_name>, avx512f_vcvtss2usiq<round_name>,
        avx512f_vcvttss2usi<round_saeonly_name>,
        avx512f_vcvttss2usiq<round_saeonly_name>): Use %k1 instead of %1 for
        -masm=intel.
        (avx512f_vcvtsd2usi<round_name>, avx512f_vcvtsd2usiq<round_name>,
        avx512f_vcvttsd2usi<round_saeonly_name>,
        avx512f_vcvttsd2usiq<round_saeonly_name>, ufloatv2siv2df2<mask_name>):
        Use %q1 instead of %1 for -masm=intel.
        (avx512f_sfixupimm<mode><sd_maskz_name><round_saeonly_name>,
        avx512f_sfixupimm<mode>_mask<round_saeonly_name>): Use %<iptr>3 instead
        of %3 for -masm=intel.
        (sse2_shufpd_v2df_mask): Fix a typo, change %{6%} to %{%6%} for
        -masm=intel.
        (*avx512vl_<code>v2div2qi2_store): Use %w0 instead of %0 for
        -masm=intel.
        (*avx512vl_<code><mode>v4qi2_store): Use %k0 instead of %0 for
        -masm=intel.
        (avx512vl_<code><mode>v4qi2_mask_store): Use a single pattern with
        %k0 and %1 for -masm=intel rather than two patterns, one with %0 and
        %g1.
        (*avx512vl_<code><mode>v8qi2_store): Use %q0 instead of %0 for
        -masm=intel.
        (avx512vl_<code><mode>v8qi2_mask_store): Use a single pattern with
        %q0 and %1 for -masm=intel rather than two patterns, one with %0 and
        %g1 and one with %0 and %1.
        (avx512er_vmrcp28<mode><round_saeonly_name>,
        avx512er_vmrsqrt28<mode><round_saeonly_name>): Use %<iptr>1 instead of
        %1 for -masm=intel.
        (avx5124fmaddps_4fmaddps_mask, avx5124fmaddps_4fmaddss_mask,
        avx5124fmaddps_4fnmaddps_mask, avx5124fmaddps_4fnmaddss_mask,
        avx5124vnniw_vp4dpwssd_mask, avx5124vnniw_vp4dpwssds_mask): Swap order
        of %0 and %{%4%} for -masm=intel.
        (avx5124fmaddps_4fmaddps_maskz, avx5124fmaddps_4fmaddss_maskz,
        avx5124fmaddps_4fnmaddps_maskz, avx5124fmaddps_4fnmaddss_maskz,
        avx5124vnniw_vp4dpwssd_maskz, avx5124vnniw_vp4dpwssds_maskz): Swap
        order of %0 and %{%5%}%{z%} for -masm=intel.

2018-04-17  Jan Hubicka  <jh@suse.cz>

        PR lto/85405
        * ipa-devirt.c (odr_types_equivalent_p): Handle bit fields.

2018-04-17  Martin Liska  <mliska@suse.cz>

        PR ipa/85329
        * multiple_target.c (create_dispatcher_calls): Set apostrophes
        for target_clone error message.  Make default implementation
        clone to be a local declaration.
        (separate_attrs): Add new argument and check for an empty
        string.
        (expand_target_clones): Handle it.
        (ipa_target_clone): Make redirection just for target_clones
        functions.

2018-04-16  Cesar Philippidis  <cesar@codesourcery.com>
            Tom de Vries  <tom@codesourcery.com>

        PR middle-end/84955
        * omp-expand.c (expand_oacc_for): Add dummy false branch for
        tiled basic blocks without omp continue statements.

2018-04-16  Aaron Sawdey  <acsawdey@linux.ibm.com>

        PR target/83660
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin): Mark
        vec_extract expression as having side effects to make sure it gets
        a cleanup point.

2018-04-16  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85403
        * config/i386/i386.c (get_builtin_code_for_version): Check
        error_mark_node.

2018-04-16  Olga Makhotina  <olga.makhotina@intel.com>

        PR target/84331
        * gcc/config.gcc: Support "skylake".
        * gcc/config/i386/i386-c.c (ix86_target_macros_internal): Handle
        PROCESSOR_SKYLAKE.
        * gcc/config/i386/i386.c (m_SKYLAKE): Define.
        (processor_target_table): Add "skylake".
        (ix86_option_override_internal): Add "skylake".
        (get_builtin_code_for_version): Handle PROCESSOR_SKYLAKE,
        PROCESSOR_CANNONLAKE.
        (get_builtin_code_for_version): Fix priority for
        PROCESSOR_ICELAKE_CLIENT, PROCESSOR_ICELAKE_SERVER,
        PROCESSOR_SKYLAKE-AVX512.
        * gcc/config/i386/i386.h (processor_costs): Define TARGET_SKYLAKE.
        (processor_type): Add PROCESSOR_SKYLAKE.

2018-04-16  Paolo Carlini  <paolo.carlini@oracle.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/85112
        * convert.c (convert_to_integer_1): Use direct recursion for
        enumeral types and types with a precision less than the number
        of bits in their mode.

2018-04-16  Julia Koval  <julia.koval@intel.com>

        PR target/84413
        * config/i386/x86-tune.def (X86_TUNE_SSE_UNALIGNED_LOAD_OPTIMAL,
        X86_TUNE_SSE_UNALIGNED_STORE_OPTIMAL): Add m_SKYLAKE_AVX512

2018-04-14  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/85293
        * config/rs6000/rs6000.opt (mdirect-move): Make deprecated.
        * doc/invoke.texi (RS/6000 and PowerPC Options): Remove -mdirect-move
        and -mno-direct-move.

2018-04-13  Paul A. Clarke  <pc@us.ibm.com>

        PR target/83402
        * config/rs6000/emmintrin.h (_mm_slli_epi{16,32,64}):
        Ensure that vec_splat_s32 is only called with 0 <= shift < 16.
        Ensure negative shifts result in {0}.

2018-04-13  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/79916
        * config/rs6000/rs6000.c (rs6000_emit_move): Use assigned hard
        regs (if any) to define how to gnerate SD moves when LRA is in
        progress.

2018-04-13  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/85393
        * except.h (expand_dw2_landing_pad_for_region): Remove declaration.
        * except.c (expand_dw2_landing_pad_for_region): Make static.
        * bb-reorder.c (fix_up_crossing_landing_pad): In new_bb emit just
        a label and unconditional jump to old_bb, rather than
        expand_dw2_landing_pad_for_region insn(s) and jump to single_succ
        basic block.

        PR rtl-optimization/85376
        * simplify-rtx.c (simplify_const_unary_operation): For CLZ and CTZ and
        zero op0, if C?Z_DEFINED_VALUE_AT_ZERO is false, return NULL_RTX
        instead of a specific value.

2018-04-13  Jan Hubicka  <hubicka@ucw.cz>
            Bin Cheng  <bin.cheng@arm.com>

        PR tree-optimization/82965
        PR tree-optimization/83991
        * cfgloopanal.c (expected_loop_iterations_unbounded): Add
        by_profile_only parameter.
        * cfgloopmanip.c (scale_loop_profile): Further scale loop's profile
        information if the loop was predicted to iterate too many times.
        * cfgloop.h (expected_loop_iterations_unbounded): Update prototype

2018-04-13  Jan Hubicka  <hubicka@ucw.cz>

        PR lto/71991
        * config/i386/i386.c (ix86_can_inline_p): Allow safe transitions for
        always inline.

2018-04-13  Martin Liska  <mliska@suse.cz>
            Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/81657
        * expr.h (enum block_op_methods): Add BLOCK_OP_NO_LIBCALL_RET.
        * expr.c (emit_block_move_hints): Handle BLOCK_OP_NO_LIBCALL_RET.
        * builtins.c (expand_builtin_memory_copy_args): Use
        BLOCK_OP_NO_LIBCALL_RET method for mempcpy with non-ignored target,
        handle dest_addr == pc_rtx.

2018-04-12  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/85291
        * config/rs6000/rs6000.md (fix_trunc<mode>si2): Use legacy code if
        asked to not generate direct moves.
        (fix_trunc<mode>si2_stfiwx): Similar.
        (fix_trunc<mode>si2_internal): Similar.

2018-04-12  Jakub Jelinek  <jakub@redhat.com>

        PR debug/83157
        * var-tracking.c (add_stores): Handle STRICT_LOW_PART SET_DEST.
        * cselib.c (cselib_record_sets): For STRICT_LOW_PART dest,
        lookup if dest in some wider mode is known to be const0_rtx and
        if so, record permanent equivalence for it to be ZERO_EXTEND of
        the narrower mode destination.

2018-04-12  Cesar Philippidis  <cesar@codesourcery.com>

        * lto-streamer-out.c (output_function): Revert 259346.
        * omp-expand.c (expand_oacc_for): Likewise.

2018-04-12  Alexander Monakov  <amonakov@ispras.ru>

        PR rtl-optimization/85354
        * sel-sched-ir.c (sel_init_pipelining): Move cfg_cleanup call...
        * sel-sched.c (sel_global_init): ... here.

2018-04-12  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/85238
        * lto-wrapper.c (debug_objcopy): Open the files in binary mode.
        * dwarf2out.c (dwarf2out_early_finish): Do not generate assembly in LTO
        mode for PE-COFF targets.
        * config/i386/i386-protos.h (i386_pe_asm_lto_start): Declare.
        (i386_pe_asm_lto_end): Likewise.
        * config/i386/cygming.h (TARGET_ASM_LTO_START): Define.
        (TARGET_ASM_LTO_END): Likewise.
        * config/i386/winnt.c (saved_debug_info_level): New static variable.
        (i386_pe_asm_lto_start): New function.
        (i386_pe_asm_lto_end): Likewise.

2018-04-12  Cesar Philippidis  <cesar@codesourcery.com>
            Richard Biener  <rguenther@suse.de>

        PR middle-end/84955
        * lto-streamer-out.c (output_function): Fix CFG loop state before
        streaming out.
        * omp-expand.c (expand_oacc_for): Handle calls to internal
        functions like regular functions.

2018-04-12  Richard Biener  <rguenther@suse.de>

        PR lto/85371
        * dwarf2out.c (init_sections_and_labels): Use debug_line_section[_label]
        for the early LTO debug to properly generate references to it
        during DIE emission.  Do not re-use that for the skeleton for
        split-dwarf.
        (dwarf2out_early_finish): Likewise.

2018-04-12  Jakub Jelinek  <jakub@redhat.com>

        PR target/85328
        * config/i386/sse.md
        (<mask_codefor>avx512dq_vextract<shuffletype>64x2_1<mask_name> split,
        <mask_codefor>avx512f_vextract<shuffletype>32x4_1<mask_name> split,
        vec_extract_lo_<mode><mask_name> split, vec_extract_lo_v32hi,
        vec_extract_lo_v64qi): For non-AVX512VL if input is xmm16+ reg
        and output is a reg, avoid creating invalid lowpart subreg, but
        instead split into a 512-bit move.  Don't split if not AVX512VL,
        input is xmm16+ reg and output is a mem.
        (vec_extract_lo_<mode><mask_name>, vec_extract_lo_v32hi,
        vec_extract_lo_v64qi): Don't require split if not AVX512VL, input is
        xmm16+ reg and output is a mem.

2018-04-12  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        * config/s390/s390.c (s390_output_indirect_thunk_function): Check
        also for flag_dwarf2_cfi_asm.

2018-04-12  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/85342
        * regcprop.c (copyprop_hardreg_forward_1): Remove replaced array, use
        a bool scalar var inside of the loop instead.  Don't try to update
        recog_data.operand after failed apply_change_group.

2018-04-12  Tom de Vries  <tom@codesourcery.com>

        PR target/85296
        * config/nvptx/nvptx.c (flexible_array_member_type_p): New function.
        (nvptx_assemble_decl_begin): Add undefined param.  Declare undefined
        array with flexible array member as array without given dimension.
        (nvptx_assemble_undefined_decl): Set nvptx_assemble_decl_begin call
        argument for undefined param to true.

2018-04-11  Aaron Sawdey  <acsawdey@linux.ibm.com>

        PR target/85321
        * doc/invoke.texi (RS/6000 and PowerPC Options): Document options
        -mcall- and -mtraceback=. Remove options -mabi=spe and -mabi=no-spe
        from PowerPC section.
        * config/rs6000/sysv4.opt (mcall-): Improve help text.
        * config/rs6000/rs6000.opt (mblock-compare-inline-limit=): Trim
        help text that is too long.
        * config/rs6000/rs6000.opt (mblock-compare-inline-loop-limit=): Trim
        help text that is too long.
        * config/rs6000/rs6000.opt (mstring-compare-inline-limit=): Trim
        help text that is too long.

2018-04-11  Uros Bizjak  <ubizjak@gmail.com>

        * config/alpha/alpha.md (stack_probe_internal): Rename
        from "probe_stack".  Update all callers.

2018-04-11  Alexander Monakov  <amonakov@ispras.ru>

        PR rtl-optimization/84566
        * sched-deps.c (sched_analyze_insn): Check deps->readonly when invoking
        sched_macro_fuse_insns.

2018-04-11  Alexander Monakov  <amonakov@ispras.ru>

        PR target/84301
        * sched-rgn.c (add_branch_dependences): Move sel_sched_p check here...
        (compute_block_dependences): ... from here.

2018-04-11  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/85331
        * vec-perm-indices.h (vec_perm_indices::clamp): Change input type
        from int to HOST_WIDE_INT.

2018-04-11  Martin Jambor  <mjambor@suse.cz>

        PR ipa/84149
        * ipa-cp.c (propagate_vals_across_pass_through): Expand comment.
        (cgraph_edge_brings_value_p): New parameter dest_val, check if it is
        not the same as the source val.
        (cgraph_edge_brings_value_p): New parameter.
        (gather_edges_for_value): Pass destination value to
        cgraph_edge_brings_value_p.
        (perhaps_add_new_callers): Likewise.
        (get_info_about_necessary_edges): Likewise and exclude values brought
        only by self-recursive edges.
        (create_specialized_node): Redirect only clones of self-calling edges.
        (+self_recursive_pass_through_p): New function.
        (find_more_scalar_values_for_callers_subset): Use it.
        (find_aggregate_values_for_callers_subset): Likewise.
        (known_aggs_to_agg_replacement_list): Removed.
        (decide_whether_version_node): Re-calculate known constants for all
        remaining context clones.

2018-04-11  Richard Biener  <rguenther@suse.de>

        PR lto/85339
        * dwarf2out.c (dwarf2out_finish): Remove DW_AT_stmt_list attribute
        from early DWARF output.
        (dwarf2out_early_finish): Output line info unconditionally into
        early DWARF and add reference to it.

2018-04-11  Jakub Jelinek  <jakub@redhat.com>

        PR target/85281
        * config/i386/sse.md (iptr): Add V16SFmode and V8DFmode cases.
        (<avx512>_vec_dup<mode><mask_name>): Use a single pattern for modes
        other than V2DFmode using iptr mode attribute.
        (<avx512>_vec_dup<mode><mask_name>): Use iptr mode attribute.

2018-04-11  Alexander Monakov  <amonakov@ispras.ru>

        PR rtl-optimization/84659
        * sel-sched-ir.c (sel_init_pipelining): Invoke cleanup_cfg.

2018-04-11  Jakub Jelinek  <jakub@redhat.com>

        PR debug/85302
        * dwarf2out.c (skip_loc_list_entry): Don't call size_of_locs if
        SIZEP is NULL.
        (output_loc_list): Pass address of a dummy size variable even in the
        locview handling loop.
        (index_location_lists): Add comment on why skip_loc_list_entry can't
        call size_of_locs.

2018-04-11  Thomas Preud'homme  <thomas.preudhomme@arm.com>

        PR target/85261
        * config/arm/arm-builtins.c (arm_expand_builtin): Force input operand
        into register.

2018-04-10  Aaron Sawdey  <acsawdey@linux.ibm.com>

        PR target/85321
        * doc/invoke.texi (RS/6000 and PowerPC Options): Document options
        -mblock-compare-inline-limit, -mblock-compare-inline-loop-limit,
        and -mstring-compare-inline-limit.

2018-04-10  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/85287
        * gcc/config/rs6000/rs6000.md (allocate_stack): Put the residual size
        for stack clash protection in a register whenever we need it to be in
        a register.

2018-04-10  Segher Boessenkool  <segher@kernel.crashing.org>

        * common/config/rs6000/rs6000-common.c (rs6000_option_init_struct):
        Enable -fasynchronous-unwind-tables by default if OBJECT_FORMAT_ELF.

2018-04-10  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/85321
        * config/rs6000/rs6000.opt (mtraceback=): Show the allowed values in
        the help text.
        (mlong-double-): Ditto.
        * config/rs6000/sysv4.opt (msdata=): Ditto.
        (mtls-size=): Ditto.

2018-04-10  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Remove
        erroneous entries for
        "vector int vec_ldl (int, long int *)", and
        "vector unsigned int vec_ldl (int, unsigned long int *)".
        Add comments and entries for
        "vector bool char vec_ldl (int, bool char *)",
        "vector bool short vec_ldl (int, bool short *)",
        "vector bool int vec_ldl (int, bool int *)",
        "vector bool long long vec_ldl (int, bool long long *)",
        "vector pixel vec_ldl (int, pixel *)",
        "vector long long vec_ldl (int, long long *)",
        "vector unsigned long long vec_ldl (int, unsigned long long *)".
        * config/rs6000/rs6000.c (rs6000_init_builtins): Initialize new
        type tree bool_long_long_type_node and correct definition of
        bool_V2DI_type_node to make reference to this new type tree.
        (rs6000_mangle_type): Replace erroneous reference to
        bool_long_type_node with bool_long_long_type_node.
        * config/rs6000/rs6000.h (enum rs6000_builtin_type_index): Add
        comments to emphasize sign distinctions for char and int types and
        replace RS6000_BTI_bool_long constant with
        RS6000_BTI_bool_long_long constant.  Also add comment to restrict
        use of RS6000_BTI_pixel.
        (bool_long_type_node): Remove this macro definition.
        (bool_long_long_type_node): New macro definition

2018-04-10  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/85300
        * combine.c (subst): Handle subst of CONST_SCALAR_INT_P new_rtx also
        into FLOAT and UNSIGNED_FLOAT like ZERO_EXTEND, return a CLOBBER if
        simplify_unary_operation fails.

2018-04-10  Martin Liska  <mliska@suse.cz>

        * gdbhooks.py: Add pretty-printers for varpool_node, symtab_node,
        cgraph_edge and ipa_ref.

2018-04-10  Jakub Jelinek  <jakub@redhat.com>

        PR target/85177
        PR target/85255
        * config/i386/sse.md
        (<extract_type>_vinsert<shuffletype><extract_suf>_mask): Fix
        computation of the VEC_MERGE selector from mask.
        (<extract_type>_vinsert<shuffletype><extract_suf>_1<mask_name>):
        Fix decoding of the VEC_MERGE selector into mask.

2018-04-10  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/85286
        * tree-vect-data-refs.c (vect_get_smallest_scalar_type):

2018-04-10  Richard Sandiford  <richard.sandiford@linaro.org>

        * final.c (final_1): Set insn_last_address as well as
        insn_current_address.

2018-04-10  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/85173
        * explow.c (emit_stack_probe): Call validize_mem on memory location
        before passing it to gen_probe_stack.  Create address operand and
        legitimize it for the probe_stack_address case.

2018-04-09  Jan Hubicka  <jh@suse.cz>

        PR lto/85078
        * ipa-devirt.c (rebuild_type_inheritance-hash): New.
        * ipa-utils.h (rebuild_type_inheritance-hash): Declare.
        * tree.c (free_lang_data_in_type): Fix handling of binfos;
        walk basetypes.
        (free_lang_data): Rebuild type inheritance graph.

2018-04-09  Martin Sebor  <msebor@redhat.com>

        * invoke.texi (-finline-small-functions): Mention other optimization
        options.
        (-findirect-inlining, -fpartial-inlining): Same.
        (-finline-functions-called-once): Same.
        (-freorder-blocks-and-partition): Same.

2018-04-09  Jan Hubicka  <jh@suse.cz>

        PR rtl/84058
        * cfgcleanup.c (try_forward_edges): Do not give up on crossing
        jumps; choose last target that matches the criteria (i.e.
        no partition changes for non-crossing jumps).
        * cfgrtl.c (cfg_layout_redirect_edge_and_branch): Add basic
        support for redirecting crossing jumps to non-crossing.

2018-04-09  Alexey Brodkin  <abrodkin@synopsys.com>

        * config/arc/arc.c (arc_expand_prologue): Set stack usage info
        also for naked functions.

2018-04-09  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.md (add_shift): New pattern.
        (add_shift2): Likewise.
        (sub_shift): Likewise.
        (sub_shift_cmp0_noout): Likewise.
        (compare_si_ashiftsi): Likewise.
        (xbfu_cmp0_noout): New combine pattern.
        (xbfu_cmp0"): Likewise.
        (movsi_set_cc_insn): Place the predicable variant first.
        (commutative_binary_cmp0_noout): Remove clobber.
        (commutative_binary_cmp0): New pattern.
        (noncommutative_binary_cmp0): Likewise.
        (noncommutative_binary_cmp0_noout): Likewise.
        (noncommutative_binary_comparison_result_used): Removed.
        (rsub_cmp0): New pattern.
        (rsub_cmp0_noout): Likewise.
        (extzvsi): Changed, keep only meaningful variants.
        (SQH, SEZ): New iterators.
        (SQH_postfix): New mode attribute.
        (SEZ_prefix): New code attribute.
        (<SEZ_prefix>xt<SQH_postfix>_cmp0_noout): New instruction pattern.
        (<SEZ_prefix>xt<SQH_postfix>_cmp0): Likewise.
        * config/arc/predicates.md (cc_set_register): Use CC_REG instead
        of numerical value.
        (noncommutative_operator): Check the availability of barrel
        shifter option.

2018-04-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85284
        * tree-ssa-loop-niter.c (number_of_iterations_exit_assumptions):
        Only use the niter constraining form of simple_iv when the exit
        is always executed.

2018-04-09  Tom de Vries  <tom@codesourcery.com>

        PR target/84041
        * config/nvptx/nvptx.md (define_c_enum "unspecv"): Add UNSPECV_MEMBAR.
        (define_expand "*memory_barrier"): New define_expand.
        (define_insn "memory_barrier"): New insn.

2018-04-09  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/80463
        PR rtl-optimization/83972
        PR rtl-optimization/83480

        * sel-sched-ir.c (has_dependence_note_mem_dep): Take into account the
        correct producer for the insn.
        (tidy_control_flow): Fixup seqnos in case of debug insns.

2018-04-09  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/83913

        * sel-sched-ir.c (merge_expr_data): Choose the middle between two
        different sched-times when merging exprs.

2018-04-09  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/83962

        * sel-sched-ir.c (tidy_control_flow): Correct the order in which we call
        tidy_fallthru_edge and tidy_control_flow.

2018-04-09  Andrey Belevantsev  <abel@ispras.ru>

        PR rtl-optimization/83530

        * sel-sched.c (force_next_insn): New global variable.
        (remove_insn_for_debug): When force_next_insn is true, also leave only
        next insn in the ready list.
        (sel_sched_region): When the region wasn't scheduled, make another pass
        over it with force_next_insn set to 1.

2018-04-08  Monk Chiang  <sh.chiang04@gmail.com>

        * config.gcc (nds32le-*-*, nds32be-*-*): Add nds32/nds32_intrinsic.h
        into tm_file.
        * config/nds32/constants.md (unspec_volatile_element): Add enum values
        for interrupt control.
        * config/nds32/nds32-intrinsic.c: Implementation of intrinsic
        functions for interrupt control.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32_intrinsic.h: Likewise.
        * config/nds32/nds32.h (nds32_builtins): Likewise.

2018-04-08  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_init_machine_status,
        nds32_legitimate_index_p, nds32_legitimate_address_p): Consider
        strict_aligned_p field.
        (nds32_expand_to_rtl_hook): New function.
        (TARGET_EXPAND_TO_RTL_HOOK): Define.
        * config/nds32/nds32.h (machine_function): Add strict_aligned_p field.

2018-04-08  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*-*-*): Check that n7 is valid to --with-cpu.
        * config/nds32/nds32-n7.md: New file.
        * config/nds32/nds32-opts.h (nds32_cpu_type): Add CPU_N7.
        * config/nds32/nds32-pipelines-auxiliary.c: Implementation for n7
        pipeline.
        * config/nds32/nds32-protos.h: More declarations for n7 pipeline.
        * config/nds32/nds32.md (pipeline_model): Add n7.
        * config/nds32/nds32.opt (mcpu): Support n7 pipeline cpus.
        * config/nds32/pipelines.md: Include n7 settings.

2018-04-08  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*-*-*): Check that e8 is valid to --with-cpu.
        * config/nds32/nds32-e8.md: New file.
        * config/nds32/nds32-opts.h (nds32-cpu_type): Add CPU_E8.
        * config/nds32/nds32-pipelines-auxiliary.c: Implementation for e8
        pipeline.
        * config/nds32/nds32-protos.h: More declarations for e8 pipeline.
        * config/nds32/nds32.md (pipeline_model): Add e8.
        * config/nds32/nds32.opt (mcpu): Support e8 pipeline cpus.
        * config/nds32/pipelines.md: Include e8 settings.

2018-04-08  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*-*-*): Check that n6/n8/s8 are valid to --with-cpu.
        * config/nds32/nds32-n8.md: New file.
        * config/nds32/nds32-opts.h (nds32_cpu_type): Add CPU_N6 and CPU_N8.
        * config/nds32/nds32-pipelines-auxiliary.c: Implementation for n8
        pipeline.
        * config/nds32/nds32-protos.h: More declarations for n8 pipeline.
        * config/nds32/nds32-utils.c: More implementations for n8 pipeline.
        * config/nds32/nds32.md (pipeline_model): Add n8.
        * config/nds32/nds32.opt (mcpu): Support n8 pipeline cpus.
        * config/nds32/pipelines.md: Include n8 settings.

2018-04-08  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*): Add nds32-utils.o into extra_objs.
        * config/nds32/nds32-n9-2r1w.md: New file.
        * config/nds32/nds32-n9-3r2w.md: New file.
        * config/nds32/nds32-opts.h (nds32_cpu_type, nds32_mul_type,
        nds32_register_ports): New or modify for cpu n9.
        * config/nds32/nds32-pipelines-auxiliary.c: Implementation for n9
        pipeline.
        * config/nds32/nds32-protos.h: More declarations for n9 pipeline.
        * config/nds32/nds32-utils.c: New file.
        * config/nds32/nds32.h (TARGET_PIPELINE_N9, TARGET_PIPELINE_SIMPLE,
        TARGET_MUL_SLOW): Define.
        * config/nds32/nds32.md (pipeline_model): New attribute.
        * config/nds32/nds32.opt (mcpu, mconfig-mul, mconfig-register-ports):
        New options that support cpu n9.
        * config/nds32/pipelines.md: Include n9 settings.
        * config/nds32/t-nds32 (nds32-utils.o): Add dependency.

2018-04-08  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-md-auxiliary.c (output_cond_branch): Output align
        information if necessary.
        (output_cond_branch_compare_zero): Likewise.
        * config/nds32/nds32.c (nds32_adjust_insn_length): Consider align case.
        (nds32_target_alignment): Refine for alignment.
        * config/nds32/nds32.h (NDS32_ALIGN_P): Define.
        (FUNCTION_BOUNDARY): Modify.
        * config/nds32/nds32.md (call_internal, call_value_internal): Consider
        align case.
        * config/nds32/nds32.opt (malways-align, malign-functions): New.

2018-04-08  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/constants.md (unspec_volatile_element): Add values for
        TLB operation and data prefetch.
        * config/nds32/nds32-intrinsic.c: Implementation of intrinsic
        functions for TLB operation and data prefetch.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32_intrinsic.h: Likewise.
        * config/nds32/nds32.c (nds32_dpref_names): Likewise.
        (nds32_print_operand): Likewise.
        * config/nds32/nds32.h (nds32_builtins): Likewise.

2018-04-07  Thomas Koenig  <tkoenig@gcc.gnu.org>
        Andrew Pinski <pinsika@gcc.gnu.org>

        PR middle-end/82976
        * match.pd: Use constant_boolean_node of correct type instead of
        boolean_true_node or boolean_false_node for simplifying
        pointer comparisons to zero.

2018-04-07  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/80021
        * tree.c (verify_type_variant): Make error call in verify_variant_match
        translatable and remove final full stop.

2018-04-07  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/constants.md (unspec_volatile_element): Add
        UNSPEC_VOLATILE_EH_RETURN.
        * config/nds32/nds32-md-auxiliary.c (nds32_output_stack_push,
        nds32_output_stack_pop): Support dwarf exception handling process.
        * config/nds32/nds32-protos.h (nds32_dynamic_chain_address): Declare.
        * config/nds32/nds32.c (nds32_init_machine_status): Support dwarf
        exception handling process.
        (nds32_compute_stack_frame): Likewise.
        (nds32_return_addr_rtx): Likewise.
        (nds32_initial_elimination_offset): Likewise.
        (nds32_expand_prologue): Likewise.
        (nds32_expand_epilogue): Likewise.
        (nds32_dynamic_chain_address): New function.
        * config/nds32/nds32.h (machine_function): Add fields for dwarf
        exception handling.
        (DYNAMIC_CHAIN_ADDRESS): Define.
        (EH_RETURN_DATA_REGNO): Define.
        (EH_RETURN_STACKADJ_RTX): Define.
        * config/nds32/nds32.md (eh_return, nds32_eh_return): Implement
        patterns for dwarf exception handling.

2018-04-07  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h: Clean up obsolete macros.

2018-04-07  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/constants.md (unspec_element, unspec_volatile_element):
        Add enum values for particular instructions.
        * config/nds32/nds32-intrinsic.c: Implementation of expanding
        particular intrinsic functions.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32_intrinsic.h: Likewise.
        * config/nds32/nds32.h (nds32_builtins): Likewise.
        * config/nds32/nds32.md (type): Add pbsad and pbsada.
        (btst, ave): New patterns for particular instructions.

2018-04-07  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/constants.md (unspec_element, unspec_volatile_element):
        Add enum values for atomic load/store and memory sync.
        * config/nds32/nds32-intrinsic.c: Implementation for atomic load/store
        and memory sync.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32_intrinsic.h: Likewise.
        * config/nds32/nds32.h (nds32_builtins): Likewise.

2018-04-07  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/85257
        * fold-const.c (native_encode_vector): If not all elts could fit
        and off is -1, return 0 rather than offset.
        * tree-ssa-sccvn.c (vn_reference_lookup_3): Pass
        (offseti - offset2) / BITS_PER_UNIT as 4th argument to
        native_encode_expr.  Verify len * BITS_PER_UNIT >= maxsizei.  Don't
        adjust buffer in native_interpret_expr call.

2018-04-07  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/constants.md (unspec_volatile_element): Add cache
        control enum values.
        * config/nds32/nds32-intrinsic.c: Add cache control expand functions.
        * config/nds32/nds32-intrinsic.md: Add cache control patterns.
        * config/nds32/nds32.c (nds32_cctl_names): New.
        (nds32_print_operand): Handle cache control register names.
        * config/nds32/nds32.h (nds32_builtins): New enum values.
        * config/nds32/nds32_intrinsic.h: Add cache control enum types and
        macros.
        * config/nds32/nds32.md (type): Add mmu.
        * config/nds32/pipelines.md (simple_insn): Add mmu.

2018-04-07  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (type): Remove call.
        * config/nds32/pipelines.md (simple_insn): Likewise.

2018-04-07  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/constants.md (unspec_volatile_element): Add
        UNSPEC_VOLATILE_FMFCSR, UNSPEC_VOLATILE_FMTCSR and
        UNSPEC_VOLATILE_FMFCFG.
        * config/nds32/nds32-intrinsic.c (bdesc_noarg): New builtin
        description for fmfcfg and fmfcsr.
        (bdesc_1arg): Add fmtcsr.
        (bdesc_2arg): Add fcpynss, fcpyss, fcpynsd and fcpysd.
        (nds32_expand_builtin_impl): Deal with FPU intrinsic functions.
        * config/nds32/nds32-intrinsic.md (unspec_fcpynsd, unspec_fcpysd,
        unspec_fcpynss, unspec_fcpysd, unspec_fcpyss, unspec_fmfcsr,
        unspec_fmfcfg): New patterns.
        * config/nds32/nds32.h (nds32_builtins): Add NDS32_BUILTIN_FMFCFG,
        NDS32_BUILTIN_FMFCSR, NDS32_BUILTIN_FMTCSR, NDS32_BUILTIN_FCPYNSS,
        NDS32_BUILTIN_FCPYSS,NDS32_BUILTIN_FCPYNSD and NDS32_BUILTIN_FCPYSD.
        * config/nds32/nds32_intrinsic.h (__nds32__fcpynsd, __nds32__fcpynss,
        __nds32__fcpysd, __nds32__fcpyss, __nds32__fmfcsr, __nds32__fmtcsr,
        __nds32__fmfcfg): Define.

2018-04-07  Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/nds32.c (nds32_intrinsic_register_names): Add more
        intrinsic register names.
        * config/nds32/nds32_intrinsic.h (nds32_intrinsic_registers): Add more
        intrinsic register enum values and macros.

2018-04-07  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_legitimate_index_p): Modify condition
        for load/store addressing form.
        (nds32_print_operand_address): Likewise.

2018-04-06  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/85196
        * config/sparc/sparc.c (sparc_expand_move): Deal with symbolic operands
        based on LABEL_REF.  Remove useless assertion.
        (pic_address_needs_scratch): Fix formatting.
        (sparc_legitimize_pic_address): Minor tweaks.
        (sparc_delegitimize_address): Adjust assertion accordingly.
        * config/sparc/sparc.md (movsi_pic_label_ref): Change label_ref_operand
        into symbolic_operand.
        (movsi_high_pic_label_ref): Likewise.
        (movsi_lo_sum_pic_label_ref): Likewise.
        (movdi_pic_label_ref): Likewise.
        (movdi_high_pic_label_ref): Likewise.
        (movdi_lo_sum_pic_label_ref): Likewise.

2018-04-06  Amaan Cheval  <amaan.cheval@gmail.com>

        * config.gcc (x86_64-*-rtems*): Add rtems.h to tm_file for
        custom LIB_SPEC setup.

2018-04-06  Ruslan Bukin  <br@bsdpad.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config.gcc (riscv*-*-freebsd*): Add RISC-V FreeBSD support.
        * config/riscv/freebsd.h: New.

2018-04-06  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_adjust_insn_length): Refine.
        * config/nds32/nds32.h (ADJUST_INSN_LENGTH): Change the location in
        file.

2018-04-06  Chung-Ju Wu  <jasonwucj@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-md-auxiliary.c (nds32_output_return,
        nds32_output_call, nds32_symbol_binds_local_p): New functions.
        * config/nds32/nds32-protos.h (nds32_output_call,
        nds32_output_return): Declare.
        * config/nds32/nds32.md: Refine all the call and return patterns.

2018-04-06  Jakub Jelinek  <jakub@redhat.com>

        PR debug/85252
        * dwarf2out.c (rtl_for_decl_init): For STRING_CST initializer only
        build CONST_STRING if TYPE_MAX_VALUE is non-NULL and is INTEGER_CST.

        PR rtl-optimization/84872
        * cfgloopmanip.c (create_preheader): Use make_forwarder_block even if
        nentry == 1 when CP_FALLTHRU_PREHEADERS and single_entry is
        EDGE_CROSSING edge.

2018-04-06  Tamar Christina  <tamar.christina@arm.com>

        * expr.c (copy_blkmode_to_reg): Revert 254862.
        * doc/sourcebuild.texi (word_mode_no_slow_unalign): Likewise.

2018-04-06  Richard Biener  <rguenther@suse.de>

        PR middle-end/85244
        * tree-dfa.c (get_ref_base_and_extent): Reset seen_variable_array_ref
        after seeing a component reference with an adjacent field.  Treat
        refs to arrays at struct end of external decls similar to
        refs to unconstrained commons.

2018-04-06  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/85213
        * fold-const.c (twoval_comparison_p): Remove SAVE_P argument and don't
        look through SAVE_EXPRs with non-side-effects argument.  Adjust
        recursive calls.
        (fold_comparison): Adjust twoval_comparison_p caller, don't handle
        save_p here.

2018-04-06  Richard Biener  <rguenther@suse.de>

        PR middle-end/85180
        * alias.c (find_base_term): New wrapper around find_base_term
        unwinding CSELIB_VAL_PTR changes.
        (find_base_term): Do not restore CSELIB_VAL_PTR during the
        recursion.

2018-04-06  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        * config/s390/s390.c (s390_z10_optimize_cmp): Expand dedicated NOP
        instructions.
        * config/s390/s390.md (UNSPECV_NOP_LR_0, UNSPECV_NOP_LR_1): New
        constant definitions.
        ("nop"): lr 0,0 -> nopr r0
        ("nop_lr0", "nop_lr1"): New insn definitions.

2018-04-06  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (*stack_push, *stack_pop): Use
        NDS32_V3PUSH_AVAILABLE_P macro.

2018-04-06  Monk Chiang  <sh.chiang04@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config.gcc (nds32*-*-*): Add v2j v3f v3s checking.
        (nds32*-*-*): Add float and fpu_config into supported_defaults.
        * common/config/nds32/nds32-common.c (TARGET_DEFAULT_TARGET_FLAGS):
        Include TARGET_DEFAULT_FPU_ISA and TARGET_DEFAULT_FPU_FMA.
        * config/nds32/constants.md (unspec_element): Add UNSPEC_COPYSIGN,
        UNSPEC_FCPYNSD, UNSPEC_FCPYNSS, UNSPEC_FCPYSD and UNSPEC_FCPYSS.
        * config/nds32/constraints.md: New constraints and checking for hard
        float configuration.
        * config/nds32/iterators.md: New mode iterator and attribute for hard
        float configuration.
        * config/nds32/nds32-doubleword.md: Use hard float alternatives and
        patterns.
        * config/nds32/nds32-fpu.md: New file.
        * config/nds32/nds32-md-auxiliary.c: New functions and checkings to
        deal with hard float code generation.
        * config/nds32/nds32-opts.h (nds32_arch_type): Add ARCH_V3F and
        ARCH_V3S.
        (abi_type, float_reg_number): New enum type.
        * config/nds32/nds32-predicates.c: New predicates for hard float.
        * config/nds32/nds32-protos.h: Declare functions for hard float.
        * config/nds32/nds32.c: Implementation for hard float configuration.
        * config/nds32/nds32.h: Definitions for hard float configuration.
        * config/nds32/nds32.md: Include hard float machine description and
        modify patterns for hard float configuration.
        * config/nds32/nds32.opt: New options for hard float configuration.
        * config/nds32/predicates.md: New predicates for hard float
        configuration.

2018-04-06  Kuan-Lin Chen  <kuanlinchentw@gmail.com>

        * common/config/nds32/nds32-common.c
        (nds32_option_optimization_table): Enable -mreleax-hint by default.

2018-04-05  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/85195
        * match.pd (BIT_FIELD_REF CONSTRUCTOR@0 @1 @2): Use view_convert around
        CONSTRUCTOR_ELT (ctor, ...)->value.

2018-04-05  Uros Bizjak  <ubizjak@gmail.com>

        PR target/85193
        * config/i386/i386.md (define_attr "memory"): Handle rotate1 type.

2018-04-05  Tom de Vries  <tom@codesourcery.com>

        PR target/85204
        * config/nvptx/nvptx.c (nvptx_single): Fix neutering of bb with only
        cond jump.

2018-04-05  Shiva Chen  <shiva0217@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/constraints.md (U33): Fine-tune checking condition.
        * config/nds32/nds32-md-auxiliary.c (nds32_mem_format): Ditto.
        * config/nds32/nds32.h (nds32_16bit_address_type): Add
        ADDRESS_POST_MODIFY_LO_REG_IMM3U.

2018-04-05  Shiva Chen  <shiva0217@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/constraints.md (Ufe): New memory constraint.
        * config/nds32/nds32-md-auxiliary.c (nds32_mem_format,
        nds32_output_16bit_load): Consider r8 register for lwi45.fe format.
        * config/nds32/nds32.c (nds32_print_operand): Output lwi45.fe
        operands.
        * config/nds32/nds32.h (nds32_16bit_address_type): Add ADDRESS_R8_IMM7U.
        * config/nds32/nds32.md (*mov<mode>): Adjust pattern.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md: Use optimize_size in the condition for
        alu-shift instructions.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (divsi4, udivsi4): New patterns.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (negsi2): Refine pattern.

2018-04-05  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/iterators.md (shift_rotate): New code iterator.
        (shift): New code attribute.
        * config/nds32/nds32-md-auxiliary.c (nds32_expand_constant): New.
        * config/nds32/nds32-protos.h (nds32_expand_constant): Declare.
        * config/nds32/nds32.c (nds32_print_operand): Deal with more cases.
        * config/nds32/nds32.md (addsi3, *add_srli): Refine implementation for
        bit-wise operations.
        (andsi3, *andsi3): Ditto.
        (iorsi3, *iorsi3, *or_slli, *or_srli): Ditto.
        (xorsi3, *xorsi3, *xor_slli, *xor_srli): Ditto.
        (<shift>si3, *ashlsi3, *ashrsi3, *lshrsi3, *rotrsi3): Ditto.
        * config/nds32/predicates.md (nds32_rimm5u_operand, nds32_and_operand,
        nds32_ior_operand, nds32_xor_operand): New predicates.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (add<mode>3, sub<mode>3): Rename to ...
        (addsi3, subsi3): ... this.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (*sub_srli, *and_slli): Fine-tune predicator.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md: Adjust indention.

2018-04-05  Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32.md (feature): New attribute.

2018-04-05  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (subtype): New attribute.

2018-04-04  Thomas Preud'homme  <thomas.preudhomme@arm.com>

        PR target/85203
        * config/arm/arm-builtins.c (arm_expand_builtin): Change
        expansion to perform a bitwise AND of the argument followed by a
        boolean negation of the result.

2018-04-04  Peter Bergner  <bergner@vnet.ibm.com>

        PR rtl-optimization/84878
        * ddg.c (add_cross_iteration_register_deps): Use DF_REF_BB to determine
        the basic block.  Assert the use reference is not artificial and that
        it has an associated insn.

2018-04-04  Michael Matz  <matz@suse.de>

        * builtins.c (compute_objsize): Pass correct operand
        to array_at_struct_end_p.

2018-04-04  Richard Biener  <rguenther@suse.de>

        PR lto/85176
        * dwarf2out.c (dwarf2out_register_external_die): Peel namespaces
        from contexts for DINFO_LEVEL_TERSE and below.

2018-04-04  Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-doubleword.md (move_<mode>): Require
        resiter_operand condition.
        * config/nds32/nds32.md (*move<mode>): Ditto.

2018-04-04  Kito Cheng  <kito.cheng@gmail.com>
            Monk Chiang  <sh.chiang04@gmail.com>

        * config/nds32/nds32.md (movmisalign<mode>): New pattern.

2018-04-04  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (movqi, movhi): Merge into mov<mode>.

2018-04-04  Chung-Ju Wu  <jasonwucj@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-md-auxiliary.c (nds32_inverse_cond_code,
        nds32_cond_code_str, output_cond_branch,
        output_cond_branch_compare_zero, nds32_expand_cbranch,
        nds32_expand_cstore, nds32_expand_movcc,
        nds32_output_cbranchsi4_equality_zero,
        nds32_output_cbranchsi4_equality_reg,
        nds32_output_cbranchsi4_equality_reg_or_const_int,
        nds32_output_cbranchsi4_greater_less_zero: New functions.
        * config/nds32/nds32-protos.h (nds32_expand_cbranch,
        nds32_expand_cstore, nds32_expand_movcc,
        nds32_output_cbranchsi4_equality_zero,
        nds32_output_cbranchsi4_equality_reg,
        nds32_output_cbranchsi4_equality_reg_or_const_int,
        nds32_output_cbranchsi4_greater_less_zero): Declare.
        * config/nds32/predicates.md (nds32_movecc_comparison_operator,
        nds32_rimm11s_operand): New predicates.
        * config/nds32/nds32.h (nds32_expand_result_type): New enum type.
        * config/nds32/nds32.md: Rewrite all the branch and conditional move
        patterns.

2018-04-04  Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-doubleword.md: Refine all the instruction type.
        * config/nds32/nds32.md: Ditto.
        * config/nds32/pipelines.md: Ditto.

2018-04-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85168
        * tree-ssa-sccvn.c (vn_reference_maybe_forwprop_address): Avoid
        propagating abnormals.

2018-04-04  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (enabled): Use yes/no for this attribute.

2018-04-04  Chung-Ju Wu  <jasonwucj@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-md-auxiliary.c (nds32_long_call_p): New function.
        * config/nds32/nds32-protos.h (nds32_long_call_p): Declare.
        * config/nds32/nds32.c (nds32_function_ok_for_sibcall): New function.
        (TARGET_FUNCTION_OK_FOR_SIBCALL): Define.
        * config/nds32/nds32.md (sibcall_internal): New.
        (sibcall_register): Remove.
        (sibcall_immediate): Remove.
        (sibcall_value_internal): New.
        (sibcall_value_register): Remove.
        (sibcall_value_immediate): Remove.
        * config/nds32/predicates.md (nds32_general_register_operand): New.
        (nds32_call_address_operand): New.

2018-04-03  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/85167
        * shrink-wrap.c (move_insn_for_shrink_wrap): Don't set bb_uses and
        bb_defs if *split_p, instead preinitialize it to NULL.

        PR tree-optimization/85156
        * builtins.c (fold_builtin_expect): Use save_expr on arg1 to avoid
        evaluating the argument multiple times.

2018-04-03  Bill Schmidt  <wschmidt@linux.ibm.com>

        * config/rs6000/emmintrin.h (_mm_cvtpd_epi32): Use __vector rather
        than vector.
        (_mm_cvtpd_ps): Likewise.
        (_mm_cvttpd_epi32): Likewise.
        * config/rs6000/mmintrin.h (_mm_unpacklo_pi8): Likewise.
        * config/rs6000/xmmintrin.h: For strict-ANSI C++ or C11, undefine
        vector, pixel, and bool following altivec.h include.

2018-04-03  Martin Sebor  <msebor@redhat.com>

        * doc/extend.texi (Common Function Attributes): Clarify.
        (const attribute): Likewise.
        (pure attribute): Likewise.

2018-04-03  Jakub Jelinek  <jakub@redhat.com>

        PR target/85169
        * config/i386/i386.c (ix86_expand_vector_set): Use
        HOST_WIDE_INT_1U << elt instead of 1 << elt.  Formatting fix.

2018-04-03  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.c (emit_i387_cw_initialization): Always use logic
        instructions when changing rounding bits to preserve precision bits
        in the x87 control word.

2018-04-03  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/82491
        * rtl.h (strip_offset_and_add): Replace += suboffset with
        poly_uint64 () + suboffset.

2018-03-29  Martin Liska  <mliska@suse.cz>
            Martin Jambor  <mjambor@suse.cz>

        PR ipa/84947
        * ipa-cp.c (propagate_bits_across_jump_function): Bail out if
        param_type is not an integral or pointer type.

2018-04-03  Richard Biener  <rguenther@suse.de>

        * sese.h (recompute_all_dominators): Remove.

2018-04-02  Martin Sebor  <msebor@redhat.com>

        * doc/invoke.texi (-Wrestrict): Fix typos.

2018-04-02  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.h (SHIFT_COUNT_TRUNCATED): Set to zero.
        * config/riscv/riscv.md (<optab>si3): Use QImode shift count.
        (<optab>di3, <optab>si3_extend): Likewise.
        (<optab>si3_mask, <optab>si3_mask_1): New.
        (<optab>di3_mask, <optab>di3_mask_1): New.
        (<optab>si3_extend_mask, <optab>si3_extend_mask_1): New.
        (lshrsi3_zero_extend_1): Use VOIDmode shift count.
        * config/riscv/sync.md (atomic_test_and_set): Emit QImode shift count.

2018-04-02  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/cpp.texi (Variadic Macros): Fix line continuation in an
        example.

2018-04-02  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (TARGET_CANONICALIZE_COMPARISON): Define.
        (nds32_canonicalize_comparison): New function.

2018-04-01  Chung-Ju Wu  <jasonwucj@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>
            Kuan-Lin Chen  <kuanlinchentw@gmail.com>

        * config.gcc (nds32): Add nds32-relax-opt.o into extra_objs.
        * config/nds32/constants.md (unspec_volatile_element): Add
        UNSPEC_VOLATILE_RELAX_GROUP.
        * config/nds32/nds32-relax-opt.c: New file.
        * config/nds32/nds32-predicates.c
        (nds32_symbol_load_store_p): New function.
        * config/nds32/nds32-protos.h
        (nds32_symbol_load_store_p): Declare function.
        (make_pass_nds32_relax_opt): Declare new rtl pass function.
        * config/nds32/nds32.c
        (nds32_register_pass): New function to register pass.
        (nds32_register_passes): New function to register passes.
        * config/nds32/nds32.md (relax_group): New pattern.
        * config/nds32/nds32.opt (mrelax-hint): New option.
        * config/nds32/t-nds32 (nds32-relax-opt.o): New dependency.

2018-04-01  Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/t-nds32: Modify files dependency.

2018-04-01  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (FUNCTION_PROFILER): Output newline character.
        (PROFILE_HOOK): Define its implementation.

2018-04-01  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (WCHAR_TYPE, WCHAR_TYPE_SIZE): Use unsigned int
        type and 32-bit size.

2018-04-01  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/85090
        * config/i386/sse.md (V): Add V64QI and V32HI for TARGET_AVX512F.
        (V_128_256): New mode iterator.
        (*avx512dq_vextract<shuffletype>64x2_1 splitter): New define_split.
        (*avx512f_vextract<shuffletype>32x4_1 splitter): Likewise.
        (xop_pcmov_<mode><avxsizesuffix>): Use V_128_256 mode iterator instead
        of V.
        * config/i386/i386.c (ix86_expand_vector_set): Improve V32HImode and
        V64QImode expansion for !TARGET_AVX512BW && TARGET_AVX512F.

2018-03-31  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/83315
        * config/rs6000/xmmintrin.h (_mm_set_ps, _mm_max_ps): Handle (quiet)
        NaN inputs correctly.

2018-03-30  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/80546
        * config/rs6000/vsx.md (??r): New mode attribute.
        (*vsx_mov<mode>_64bit): Use it.
        (*vsx_mov<mode>_32bit): Likewise.

2018-03-30  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/84818
        * builtins.c (check_access): Use warning_n.

2018-03-30  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        PR target/83822
        * config/rs6000/rs6000-string.c (expand_compare_loop): Fix redundant
        condition.
        * config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): Fix redundant
        condition.

2018-03-30  Julia Koval  <julia.koval@intel.com>

        PR target/84413
        * x86-tune.def (movx, partial_reg_dependency): Enable for
        m_SKYLAKE_AVX512.

2018-03-29  Vladimir Makarov  <vmakarov@redhat.com>

        PR inline-asm/84985
        * lra-constraints.c (process_alt_operands): Move setting
        this_alternative_matches below.

2018-03-29  Martin Liska  <mliska@suse.cz>

        PR lto/84995.
        * doc/invoke.texi: Document how LTO works with debug info.
        Describe auto-load support of binutils.  Mention 'x86-64'
        as valid option value of -march option.

2018-03-29  Jakub Jelinek  <jakub@redhat.com>

        * config/i386/sse.md (<avx512>_blendm<mode>): Use <sseintprefix>.

        PR c/85094
        * fold-const.c (operand_equal_p): Handle DEBUG_BEGIN_STMT.
        For STATEMENT_LIST, pass down OEP_LEXICOGRAPHIC and maybe
        OEP_NO_HASH_CHECK for recursive call, to avoid exponential
        checking.

2018-03-28  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/84912
        * config/rs6000/rs6000.h (RS6000_BTM_POWERPC64): New define.
        (RS6000_BTM_COMMON): Add RS6000_BTM_POWERPC64.
        * config/rs6000/rs6000.c (rs6000_builtin_mask_calculate): Add support
        for RS6000_BTM_POWERPC64.
        (rs6000_invalid_builtin): Add handling for RS6000_BTM_POWERPC64
        (rs6000_builtin_mask_names): Add RS6000_BTM_POWERPC64.
        * config/rs6000/rs6000-builtin.def (BU_P7_POWERPC64_MISC_2): New macro
        definition.
        (DIVDE): Use it.
        (DIVDEU): Likewise.

2018-03-28 Carl Love  <cel@us.ibm.com>

        Revert
        2017-09-27  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-builtin.def (BU_FP_1MISC_1): Add define macro.
        (FCTID, FCTIW): Add BU_FP_MISC_1 macro expansion for builtins.
        * config/rs6000/rs6000.md (lrintsfsi2): Add define_insn for the
        fctiw instruction.

2018-03-28  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/xmmintrin.h (_mm_max_pi16): Use __vector __bool
        instead of __vector bool.
        (_mm_max_pu8): Likewise.
        (_mm_min_pi16): Likewise.

2018-03-28  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/84912
        * config/rs6000/rs6000-builtin.def (DIVWEO): Delete macro expansion.
        (DIVWEUO): Likewise.
        (DIVDEO): Likewise.
        (DIVDEUO): Likewise.
        * config/rs6000/rs6000.c (builtin_function_type): Remove support for
        DIVWEUO and DIVDEUO.
        * config/rs6000/rs6000.md (UNSPEC_DIVEO, UNSPEC_DIVEUO): Delete unspecs.
        (UNSPEC_DIV_EXTEND): Remove deleted unspecs.
        (div_extend): Likewise.
        * doc/extend.texi (__builtin_divweo): Remove documentation for deleted
        builtin function.
        (__builtin_divweuo): Likewise.
        (__builtin_divdeo): Likewise.
        (__builtin_divdeuo): Likewise.

2018-03-28  Jakub Jelinek  <jakub@redhat.com>

        PR target/85095
        * config/i386/i386.md (*add<mode>3_carry_0, *addsi3_carry_zext_0,
        *sub<mode>3_carry_0, *subsi3_carry_zext_0): New patterns.

        PR tree-optimization/82004
        * gimple-match-head.c (optimize_pow_to_exp): New function.
        * match.pd (pow(C,x) -> exp(log(C)*x)): Wrap with #if GIMPLE.
        Don't fold to exp if optimize_pow_to_exp is false.

2018-03-28  Martin Liska  <mliska@suse.cz>

        PR other/84819
        * calls.c (initialize_argument_information): Fix trailing space.
        * common.opt: Fix typo and provide better explanation for
        -fsanitize-coverage option.
        * config/i386/i386.opt: Fix typo.

2018-03-28  Jakub Jelinek  <jakub@redhat.com>
            Martin Liska  <mliska@suse.cz>

        PR sanitizer/85081
        * gimplify.c (asan_poison_variable): Don't do the check for
        gimplify_omp_ctxp here.
        (gimplify_decl_expr): Do it here.
        (gimplify_target_expr): Likewise.

2018-03-28  Martin Liska  <mliska@suse.cz>

        PR target/84988
        * config/i386/i386.c (ix86_function_arg_advance): Do not call
        chkp_type_bounds_count if MPX is not enabled.

2018-03-27  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (BRANCH_COST): Adjust cost.

2018-03-27  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/84914
        * config/rs6000/rs6000.c (create_complex_muldiv): New helper
        function to create the function decl for complex long double
        multiply and divide for -mabi=ieeelongdouble.
        (init_float128_ieee): Call it.

2018-03-27  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/85044
        * config/i386/i386.c (ix86_trampoline_init): Insert ENDBR for
        -fcf-protection=branch -mibt.
        * config/i386/i386.h (TRAMPOLINE_SIZE): Increased by 4 bytes.

2018-03-27  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        PR target/81863
        * config/arm/arm.c (arm_valid_symbolic_address): Handle arm_word_relocations

2018-03-27  Cesar Philippidis  <cesar@codesourcery.com>

        PR target/85056
        * config/nvptx/nvptx.c (nvptx_assemble_decl_begin): Add '[]' to
        extern array declarations.

2018-03-27  Richard Biener  <rguenther@suse.de>

        PR middle-end/84067
        * match.pd ((A * C) +- (B * C) -> (A+-B) * C): Guard with
        explicit single_use checks.

2018-03-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85082
        * tree-ssa-sccvn.c (vn_reference_lookup_or_insert_for_pieces):
        Valueize the VUSE.

2018-03-27  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        * config.gcc (aarch64*-*-linux*): New TARGET_DEFAULT_ASYNC_UNWIND_TABLES
        * common/config/aarch64/aarch64-common.c (aarch64_optimization_table[]):
        Turn on fasynchronous-unwind-tables and funwind-tables.

2018-03-26  Uros Bizjak  <ubizjak@gmail.com>

        PR target/85073
        * config/i386/i386.md (*bmi_blsr_<mode>_cmp): New insn pattern.
        (*bmi_blsr_<mode>_ccz): Ditto.

2018-03-26  Tom de Vries  <tom@codesourcery.com>

        PR tree-optimization/85063
        * omp-general.c (offloading_function_p): New function.  Factor out
        of ...
        * omp-offload.c (pass_omp_target_link::gate): ... here.
        * omp-general.h (offloading_function_p): Declare.
        * tree-switch-conversion.c (build_one_array): Mark CSWTCH.x variable
        with attribute omp declare target for offloading functions.

2018-03-24  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84005
        * tree-data-ref.h (get_base_for_alignment): Declare.
        * tree-data-ref.c (get_base_for_alignment_1): New function.
        (get_base_for_alignment): Likewise.
        * tree-vect-data-refs.c (vect_compute_data_ref_alignment): Use
        get_base_for_alignment to find a suitable base object, instead
        of always using drb->base_address.

2018-03-23  Jakub Jelinek  <jakub@redhat.com>

        PR inline-asm/85022
        * emit-rtl.c (init_emit_regs): Indicate that VOIDmode MEMs don't have
        known size by default.

2018-03-23  Vladimir Makarov  <vmakarov@redhat.com>

        PR inline-asm/85030
        * lra-constraints.c (process_alt_operands): Don't match BLKmode
        and non BLKmode operands.

2018-03-23  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/85026
        * config/arm/arm.md (unaligned_loadhis): Remove first alternative.
        Clean up attributes.

2018-03-23  Richard Biener  <rguenther@suse.de>

        PR debug/85020
        * dwarf2out.c (rtl_for_decl_location): Do not generate RTL early when
        we are going to emit early debug for LTO.

2018-03-23  Jakub Jelinek  <jakub@redhat.com>

        PR inline-asm/85034
        * function.c (match_asm_constraints_1): Don't optimize if input
        doesn't satisfy general_operand predicate for output's mode.

        PR inline-asm/85022
        * alias.c (write_dependence_p): Don't require for x_canonicalized
        non-VOIDmode if x has VOIDmode.

        PR sanitizer/85029
        * sanopt.c (maybe_optimize_ubsan_ptr_ifn): If DECL_REGISTER (base),
        just don't try to optimize it rather than assert it never happens.

2018-03-22  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-builtin.def: Remove various BU_ALTIVEC_X
        macro expansions for definition of ST_INTERNAL_<mode> and
        LD_INTERNAL_<mode> builtins.
        * config/rs6000/rs6000-protos.h (rs6000_address_for_altivec):
        Remove prototype.
        * config/rs6000/rs6000.c (altivec_expand_ld_builtin): Delete this
        function.
        (altivec_expand_st_builtin): Likewise.
        (altivec_expand_builtin): Remove calls to deleted functions.
        (rs6000_address_for_altivec): Delete this function.
        * config/rs6000/vector.md: Remove expands for
        vector_altivec_load_<mode> and vector_altivec_store_<mode>.

2018-03-22  Sudakshina Das  <sudi.das@arm.com>

        PR target/84826
        * config/arm/arm.h (machine_function): Add static_chain_stack_bytes.
        * config/arm/arm.c (arm_compute_static_chain_stack_bytes): Avoid
        re-computing once computed.
        (arm_expand_prologue): Compute machine->static_chain_stack_bytes.
        (arm_init_machine_status): Initialize
        machine->static_chain_stack_bytes.

2018-03-22  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        PR target/84760
        * doc/extend.texi: Add four new prototypes for vec_ld.
        * config/rs6000/rs6000-builtin.def (LVX_V1TI): Reorder symbol
        definitions for more logical presentation.
        * config/rs6000/rs6000-c.c: (altivec_overloaded_builtins): Add
        entries for V1TI variants of __builtin_altivec_ld builtin.
        * config/rs6000/rs6000.c: (altivec_expand_lv_builtin): Add test and
        handling of V1TI variant of LVX icode pattern.
        (altivec_expand_builtin): Add case for ALTIVEC_BUILTIN_LVX_V1TI.
        (rs6000_gimple_fold_builtin): Likewise.
        (altivec_init_builtins): Add code to define
        __builtin_altivec_lvx_v1ti function.

2018-03-22  Jakub Jelinek  <jakub@redhat.com>

        PR inline-asm/84941
        * function.c (match_asm_constraints_1): Don't do the optimization
        if input isn't a REG, SUBREG, MEM or constant.

2018-03-22  Tom de Vries  <tom@codesourcery.com>

        PR tree-optimization/84956
        * tree-ssa-tail-merge.c (find_clusters_1): Skip bbs with
        bb_has_abnormal_pred.

2018-03-22  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/85018
        * dwarf2asm.c (dw2_output_indirect_constant_1): Set
        DECL_INITIAL (decl) to decl at the end.
        * varasm.c (use_blocks_for_decl_p): Revert the 2018-03-20 change,
        adjust the comment.

2018-03-21  Joseph Myers  <joseph@codesourcery.com>

        * doc/extend.texi (__builtin_tgmath): Document when complex
        integer types are treated as _Complex _Float64.

2018-03-21  Tom de Vries  <tom@codesourcery.com>

        * doc/extend.texi (__builtin_extend_pointer): Remove pasto.

2018-03-21  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84960
        * tree-cfg.c (remove_bb): Don't move forced labels into bb->prev_bb
        if it is ENTRY block, move them into single succ of ENTRY in that case.

2018-03-21  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84811
        * poly-int.h (poly_span_traits): Remove the T3 parameter and
        promote HOST_WIDE_INT T2 - T1 results to unsigned HOST_WIDE_INT.
        (maybe_in_range_p, known_in_range_p, ranges_known_overlap_p):
        (known_subrange_p): Update accordingly.  Cast each value involved
        in the size comparison, rather than casting the result of the
        subtraction.

2018-03-21  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84982
        * gimple-ssa-store-merging.c (invert_op): Handle boolean inversion
        by flipping the least significant bit rather than all bits from
        bitpos to bitpos + bitsize - 1.

2018-03-21  Nathan Sidwell  <nathan@acm.org>

        * doc/extend.texi (Deprecated Features): Remove mention of
        long-deleted deprecations.

2018-03-21  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR jit/84288
        * configure.ac (gcc_cv_ld_soname) <*-*-solaris2*>: Set.
        * configure: Regenerate.

2018-03-21  Tom de Vries  <tom@codesourcery.com>

        PR tree-optimization/83126
        * tree-parloops.c (num_phis): New function.
        (gen_parallel_loop): Detect and handle canonicalize_loop_ivs failure.

2018-03-21  Nathan Sidwell  <nathan@acm.org>

        * doc/extend.texi (Deprecated Features): Update deprecated flags,
        mention anon-struct/union members and trailing attributes.

2018-03-21  Bin Cheng  <bin.cheng@arm.com>

        PR tree-optimization/84969
        * tree-loop-distribution.c (fuse_memset_builtins): Don't reorder
        builtin memset partitions if they set different rhs values.

2018-03-21  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/84989
        * simplify-rtx.c (simplify_unary_operation_1): Don't try to simplify
        VEC_DUPLICATE with scalar result mode.

2018-03-21  Martin Liska  <mliska@suse.cz>

        PR ipa/84963
        * ipa-icf.c (sem_item_optimizer::fixup_points_to_sets): Remove
        not intended return statement.

2018-03-21  Martin Liska  <mliska@suse.cz>

        PR target/84988
        * tree-chkp.c (CHKP_ARRAY_MAX_CHECK_STEPS): Define a new macro.
        (chkp_find_bound_slots_1): Limit number of iterations.

2018-03-20  David H. Gutteridge  <dhgutteridge@sympatico.ca>

        PR target/84838
        * Minor grammar fixes for x86 options.

2018-03-20  Jakub Jelinek  <jakub@redhat.com>

        PR debug/84875
        * dce.c (delete_unmarked_insns): Don't remove frame related noop moves
        holding REG_CFA_RESTORE notes, instead turn them into a USE.

2018-03-20  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/83789
        * config/rs6000/altivec.md (altivec_lvx_<mode>_2op): Delete define_insn.
        (altivec_lvx_<mode>_1op): Likewise.
        (altivec_stvx_<mode>_2op): Likewise.
        (altivec_stvx_<mode>_1op): Likewise.
        (altivec_lvx_<VM2:mode>): New define_expand.
        (altivec_stvx_<VM2:mode>): Likewise.
        (altivec_lvx_<VM2:mode>_2op_<P:mptrsize>): New define_insn.
        (altivec_lvx_<VM2:mode>_1op_<P:mptrsize>): Likewise.
        (altivec_stvx_<VM2:mode>_2op_<P:mptrsize>): Likewise.
        (altivec_stvx_<VM2:mode>_1op_<P:mptrsize>): Likewise.
        * config/rs6000/rs6000-p8swap.c (rs6000_gen_stvx): Use new expanders.
        (rs6000_gen_lvx): Likewise.
        * config/rs6000/rs6000.c (altivec_expand_lv_builtin): Likewise.
        (altivec_expand_stv_builtin): Likewise.
        (altivec_expand_builtin): Likewise.
        * config/rs6000/vector.md: Likewise.

2018-03-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/82518
        * config/arm/arm.c (arm_array_mode_supported_p): Return false for
        BYTES_BIG_ENDIAN.

2018-03-20  Richard Biener  <rguenther@suse.de>

        PR target/84986
        * config/i386/i386.c (ix86_add_stmt_cost): Only cost
        sign-conversions as zero, fall back to standard scalar_stmt
        cost for the rest.

2018-03-20  Martin Liska  <mliska@suse.cz>

        PR ipa/84825
        * predict.c (rebuild_frequencies): Handle case when we have
        PROFILE_ABSENT, but flag_guess_branch_prob is false.

2018-03-20  Jakub Jelinek  <jakub@redhat.com>

        PR target/84990
        * dwarf2asm.c (dw2_output_indirect_constant_1): Temporarily turn off
        flag_section_anchors.
        * varasm.c (use_blocks_for_decl_p): Remove hack for
        dw2_force_const_mem.

        PR target/84845
        * config/aarch64/aarch64.md (*aarch64_reg_<mode>3_neg_mask2): Rename
        to ...
        (*aarch64_<optab>_reg_<mode>3_neg_mask2): ... this.  If pseudos can't
        be created, use lowpart_subreg of operands[0] rather than operands[0]
        itself.
        (*aarch64_reg_<mode>3_minus_mask): Rename to ...
        (*aarch64_ashl_reg_<mode>3_minus_mask): ... this.
        (*aarch64_<optab>_reg_di3_mask2): Use const_int_operand predicate
        and n constraint instead of aarch64_shift_imm_di and Usd.
        (*aarch64_reg_<optab>_minus<mode>3): Rename to ...
        (*aarch64_<optab>_reg_minus<mode>3): ... this.

2018-03-20  Sudakshina Das  <sudi.das@arm.com>

        PR target/82989
        * config/arm/neon.md (ashldi3_neon): Update ?s for constraints
        to favor GPR over NEON registers.
        (<shift>di3_neon): Likewise.

2018-03-20  Tom de Vries  <tom@codesourcery.com>

        PR target/84952
        * config/nvptx/nvptx.c (nvptx_single): Don't neuter bar.sync.
        (nvptx_process_pars): Emit bar.sync asap and alap.

2018-03-20  Tom de Vries  <tom@codesourcery.com>

        PR target/84954
        * config/nvptx/nvptx.c (prevent_branch_around_nothing): Also update
        seen_label if seen_label is already set.

2018-03-20  Jakub Jelinek  <jakub@redhat.com>

        PR target/84945
        * config/i386/i386.c (fold_builtin_cpu): For features above 31
        use __cpu_features2 variable instead of __cpu_model.__cpu_features[0].
        Use 1U instead of 1.  Formatting fixes.

        PR c/84953
        * builtins.c (fold_builtin_strpbrk): For strpbrk(x, "") use type
        instead of TREE_TYPE (s1) for the return value.

2018-03-19  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84946
        * gimple-ssa-store-merging.c (mem_valid_for_store_merging): Compute
        bitsize + bitsize in poly_uint64 rather than poly_int64.

        PR sanitizer/78651
        * dwarf2asm.c: Include fold-const.c.
        (dw2_output_indirect_constant_1): Set DECL_INITIAL (decl) to ADDR_EXPR
        of decl rather than decl itself.

        PR rtl-optimization/84643
        * memmodel.h (enum memmodel): Add MEMMODEL_MAX enumerator.

2018-03-19  Maxim Ostapenko  <m.ostapenko@samsung.com>

        PR sanitizer/78651
        * dwarf2asm.c (dw2_output_indirect_constant_1): Disable ASan before
        calling assemble_variable.

2018-03-19  Sudakshina Das  <sudi.das@arm.com>

        PR target/81647
        * config/aarch64/aarch64-simd.md (vec_cmp<mode><v_int_equiv>): Modify
        instructions for UNLT, UNLE, UNGT, UNGE, UNEQ, UNORDERED and ORDERED.

2018-03-19  Jim Wilson  <jimw@sifive.com>

        PR bootstrap/84856
        * config/riscv/riscv.c (riscv_function_arg_boundary): Use
        PREFERRED_STACK_BOUNDARY instead of STACK_BOUNDARY.
        (riscv_first_stack_step): Likewise.
        (riscv_option_override): Use STACK_BOUNDARY instead of
        MIN_STACK_BOUNDARY.
        * config/riscv/riscv.h (STACK_BOUNDARY): Renamed from
        MIN_STACK_BOUNDARY.
        (BIGGEST_ALIGNMENT): Set to 128.
        (PREFERRED_STACK_BOUNDARY): Renamed from STACK_BOUNDARY.
        (RISCV_STACK_ALIGN): Use PREFERRED_STACK_BOUNDARY instead of
        STACK_BOUNDARY.

2018-03-19  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84933
        * tree-vrp.c (set_and_canonicalize_value_range): Treat out-of-bound
        values as -INF/INF when canonicalizing an ANTI_RANGE to a RANGE.

2018-03-19  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84859
        * tree-ssa-phiopt.c (single_trailing_store_in_bb): New function.
        (cond_if_else_store_replacement): Perform sinking operation on
        single-store BBs regardless of MAX_STORES_TO_SINK setting.
        Generalize what a BB with a single eligible store is.

2018-03-19  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84929
        * tree-data-ref.c (analyze_siv_subscript_cst_affine): Guard
        chrec_is_positive against non-chrec arg.

2018-03-19  Tamar Christina  <tamar.christina@arm.com>

        PR target/84711
        * config/arm/arm.c (arm_can_change_mode_class): revert r258554.

2018-03-18  Martin Liska  <mliska@suse.cz>

        PR rtl-optimization/84635
        * regrename.c (build_def_use): Use matches_mode only when
        matches >= 0.

2018-03-18  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84913
        * tree-vect-loop.c (vectorizable_reduction): Don't try to
        vectorize chains of COND_EXPRs.

2018-03-18  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (MAX_REGS_PER_ADDRESS): Fix the value.

2018-03-18  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (LOGICAL_OP_NON_SHORT_CIRCUIT): Define.

2018-03-18  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.h (CLZ_DEFINED_VALUE_AT_ZERO): Define.

2018-03-17  Chung-Ju Wu  <jasonwucj@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32-protos.h (nds32_adjust_reg_alloc_order): Declare.
        * config/nds32/nds32.c (nds32_reg_alloc_order_for_speed): New array.
        (nds32_adjust_reg_alloc_order): New function.
        * config/nds32/nds32.h (ADJUST_REG_ALLOC_ORDER): Define.

2018-03-17  Kito Cheng  <kito.cheng@gmail.com>

        * config/nds32/nds32.c (nds32_asm_output_mi_thunk,
        nds32_print_operand, nds32_print_operand_address): Use
        HOST_WIDE_INT_PRINT_DEC instead.

2018-03-17  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_register_priority): Modify cost.

2018-03-17  Jakub Jelinek  <jakub@redhat.com>

        PR target/84902
        * config/i386/i386.c (initial_ix86_tune_features,
        initial_ix86_arch_features): Use unsigned HOST_WIDE_INT rather than
        unsigned long long.
        (set_ix86_tune_features): Change ix86_tune_mask from unsigned int
        to unsigned HOST_WIDE_INT, initialize to HOST_WIDE_INT_1U << ix86_tune
        rather than 1u << ix86_tune.  Formatting fix.
        (ix86_option_override_internal): Change ix86_arch_mask from
        unsigned int to unsigned HOST_WIDE_INT, initialize to
        HOST_WIDE_INT_1U << ix86_arch rather than 1u << ix86_arch.
        (ix86_function_specific_restore): Likewise.

2018-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR target/84899
        * postreload.c (reload_combine_recognize_pattern): Perform
        INTVAL addition in unsigned HOST_WIDE_INT type to avoid UB and
        truncate_int_for_mode the result for the destination's mode.

        PR c/84909
        * hsa-gen.c (mem_type_for_type): Fix comment typo.
        * tree-vect-loop-manip.c (vect_create_cond_for_niters_checks):
        Likewise.
        * gimple-ssa-warn-restrict.c (builtin_memref::set_base_and_offset):
        Likewise.

2018-03-16  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/84876
        * lra-assigns.c (lra_split_hard_reg_for): Don't use
        regno_allocno_class_array and sorted_pseudos.
        * lra-constraints.c (spill_hard_reg_in_range): Ignore hard regs in
        insns where regno is used.

2018-03-16  Martin Liska  <mliska@suse.cz>

        PR ipa/84833
        * multiple_target.c (create_dispatcher_calls): Redirect
        reference in the symbol table.

2018-03-16  Martin Liska  <mliska@suse.cz>

        PR ipa/84722
        * multiple_target.c (create_dispatcher_calls): Redirect also
        an alias.

2018-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79937
        PR c++/82410
        * tree.h (TARGET_EXPR_NO_ELIDE): Define.
        * gimplify.c (gimplify_modify_expr_rhs): Don't elide TARGET_EXPRs with
        TARGET_EXPR_NO_ELIDE flag set unless *expr_p is INIT_EXPR.

2018-03-16  Julia Koval  <julia.koval@intel.com>

        * doc/invoke.texi (Skylake Server): Add CLWB.
        Cannonlake): Remove CLWB.

2018-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84841
        * tree-ssa-reassoc.c (INTEGER_CONST_TYPE): Change to 1 << 4 from
        1 << 3.
        (FLOAT_ONE_CONST_TYPE): Define.
        (constant_type): Return FLOAT_ONE_CONST_TYPE for -1.0 and 1.0.
        (sort_by_operand_rank): Put entries with higher constant_type last
        rather than first to match comments.

2018-03-15  Sandra Loosemore  <sandra@codesourcery.com>

        * config/nios2/nios2.md (movsi_internal): Fix thinko in 
        split predicate.

2018-03-15  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79085
        * calls.c (expand_call): For TREE_ADDRESSABLE rettype ignore alignment
        check and use address of target always.

2018-03-15  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/84574
        * config/i386/i386.c (indirect_thunk_needed): Update comments.
        (indirect_thunk_bnd_needed): Likewise.
        (indirect_thunks_used): Likewise.
        (indirect_thunks_bnd_used): Likewise.
        (indirect_return_needed): New.
        (indirect_return_bnd_needed): Likewise.
        (output_indirect_thunk_function): Add a bool argument for
        function return.
        (output_indirect_thunk_function): Don't generate alias for
        function return thunk.
        (ix86_code_end): Call output_indirect_thunk_function to generate
        function return thunks.
        (ix86_output_function_return): Set indirect_return_bnd_needed
        and indirect_return_needed instead of indirect_thunk_bnd_needed
        and indirect_thunk_needed.

2018-03-15  Olga Makhotina  <olga.makhotina@intel.com>

        * config/i386/sgxintrin.h (_enclv_u32): New intrinsic.
        (__enclv_bc, __enclv_cd, __enclv_generic): New definitions.
        (ERDINFO, ETRACKC, ELDBC, ELDUC): New leaves.

2018-03-15  David Malcolm  <dmalcolm@redhat.com>
            Paul Hua <paul.hua.gm@gmail.com>

        PR c/84852
        * gcc.dg/fixits-pr84852-1.c: Fix filename in dg-regexp.

2018-03-15  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (abi_v4_pass_in_fpr): Add back the
        TARGET_DOUBLE_FLOAT and TARGET_SINGLE_FLOAT conditions on the DFmode
        resp. SFmode cases.

2018-03-15  Tamar Christina  <tamar.christina@arm.com>

        PR target/84711
        * config/arm/arm.c (arm_can_change_mode_class): Use GET_MODE_UNIT_SIZE
        instead of GET_MODE_SIZE when comparing Units.

2018-03-15  Vladimir Mezentsev  <vladimir.mezentsev@oracle.com>

        PR target/68256
        * varasm.c (hash_section): Return an unchangeble hash value
        * config/aarch64/aarch64.c (aarch64_use_blocks_for_constant_p):
        Return !aarch64_can_use_per_function_literal_pools_p ().

2018-03-15  Jakub Jelinek  <jakub@redhat.com>

        PR target/84860
        * optabs.c (emit_conditional_move): Pass address of cmode's copy
        rather than address of cmode as last argument to prepare_cmp_insn.

2018-03-15  Julia Koval  <julia.koval@intel.com>

        * config/i386/i386.c (F_AVX512VBMI2, F_GFNI, F_VPCLMULQDQ,
        F_AVX512VNNI, F_AVX512BITALG): New.

2018-03-14  John David Anglin  <danglin@gcc.gnu.org>

        PR target/83451
        * config/pa/pa.c (pa_emit_move_sequence):  Always emit secondary reload
        insn for floating-point loads and stores.

2018-03-14  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-c.c: Add macro definitions for
        ALTIVEC_BUILTIN_VEC_PERMXOR.
        * config/rs6000/rs6000.h: Add #define for vec_permxor builtin.
        * config/rs6000/rs6000-builtin.def: Add macro expansions for VPERMXOR.
        * config/rs6000/altivec.md (altivec_vpermxor): New define expand.
        * config/rs6000/rs6000-p8swap.c (rtx_is_swappable_p): Add case
        UNSPEC_VPERMXOR.
        * config/doc/extend.texi: Add prototypes for vec_permxor.

2018-03-14  David Malcolm  <dmalcolm@redhat.com>

        PR c/84852
        * diagnostic-show-locus.c (class layout_point): Convert m_line
        from int to linenum_type.
        (line_span::comparator): Use linenum "compare" function when
        comparing line numbers.
        (test_line_span): New function.
        (layout_range::contains_point): Convert param "row" from int to
        linenum_type.
        (layout_range::intersects_line_p): Likewise.
        (layout::will_show_line_p): Likewise.
        (layout::print_source_line): Likewise.
        (layout::should_print_annotation_line_p): Likewise.
        (layout::print_annotation_line): Likewise.
        (layout::print_leading_fixits): Likewise.
        (layout::annotation_line_showed_range_p): Likewise.
        (struct line_corrections): Likewise for field m_row.
        (line_corrections::line_corrections): Likewise for param "row".
        (layout::print_trailing_fixits): Likewise.
        (layout::get_state_at_point): Likewise.
        (layout::get_x_bound_for_row): Likewise.
        (layout::print_line): Likewise.
        (diagnostic_show_locus): Likewise for locals "last_line" and
        "row".
        (selftest::diagnostic_show_locus_c_tests): Call test_line_span.
        * input.c (selftest::test_linenum_comparisons): New function.
        (selftest::input_c_tests): Call it.
        * selftest.c (selftest::test_assertions): Test ASSERT_GT,
        ASSERT_GT_AT, ASSERT_LT, and ASSERT_LT_AT.
        * selftest.h (ASSERT_GT): New macro.
        (ASSERT_GT_AT): New macro.
        (ASSERT_LT): New macro.
        (ASSERT_LT_AT): New macro.

2018-03-14  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/84780
        * combine.c (distribute_links): Don't make a link based on pc_rtx.

2018-03-14  Martin Liska  <mliska@suse.cz>

        * tree.c (record_node_allocation_statistics): Use
        get_stats_node_kind.
        (get_stats_node_kind): New function extracted from
        record_node_allocation_statistics.
        (free_node): Use get_stats_node_kind.

2018-03-14  Richard Biener  <rguenther@suse.de>

        * tree-ssa-pre.c (compute_antic_aux): Remove code that asserts
        that the value-set of ANTIC_IN doesn't grow.

        Revert
        * tree-ssa-pre.c (struct bb_bitmap_sets): Add visited_with_visited_succs
        member.
        (BB_VISITED_WITH_VISITED_SUCCS): New define.
        (compute_antic): Initialize BB_VISITED_WITH_VISITED_SUCCS.

2018-03-14  Julia Koval  <julia.koval@intel.com>

        * config.gcc (icelake-client, icelake-server): New.
        (icelake): Remove.
        * config/i386/i386.c (initial_ix86_tune_features): Extend to 64 bit.
        (initial_ix86_arch_features): Ditto.
        (PTA_SKYLAKE): Add SGX.
        (PTA_ICELAKE): Remove.
        (PTA_ICELAKE_CLIENT): New.
        (PTA_ICELAKE_SERVER): New.
        (ix86_option_override_internal): Split up icelake on icelake client and
        icelake server.
        (get_builtin_code_for_version): Ditto.
        (fold_builtin_cpu): Ditto.
        * config/i386/driver-i386.c (config/i386/driver-i386.c): Ditto.
        * config/i386/i386-c.c (ix86_target_macros_internal): Ditto
        * config/i386/i386.h (processor_type): Ditto.
        * doc/invoke.texi: Ditto.

2018-03-14  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/83392
        * sanopt.c (maybe_optimize_ubsan_ptr_ifn): Handle also
        INTEGER_CST offset, add it together with bitpos / 8 and
        sign extend based on POINTER_SIZE.

        PR target/84844
        Revert
        2017-04-20  Uros Bizjak  <ubizjak@gmail.com>

        PR target/78090
        * config/i386/constraints.md (Yc): New register constraint.
        * config/i386/i386.md (*float<SWI48:mode><MODEF:mode>2_mixed):
        Use Yc constraint for alternative 2 of operand 0.  Remove
        preferred_for_speed attribute.

2018-03-14  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84830
        * tree-ssa-pre.c (compute_antic_aux): Intersect the new ANTIC_IN
        with the old one to avoid oscillations.

2018-03-13  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/83712
        * lra-assigns.c (find_all_spills_for): Ignore uninteresting
        pseudos.
        (assign_by_spills): Return a flag of reload assignment failure.
        Do not process the reload assignment failures.  Do not spill other
        reload pseudos if they has the same reg class.  Update n if
        necessary.
        (lra_assign): Add a return arg.  Set up from the result of
        assign_by_spills call.
        (find_reload_regno_insns, lra_split_hard_reg_for): New functions.
        * lra-constraints.c (split_reg): Add a new arg.  Use it instead of
        usage_insns if it is not NULL.
        (spill_hard_reg_in_range): New function.
        (split_if_necessary, inherit_in_ebb): Pass a new arg to split_reg.
        * lra-int.h (spill_hard_reg_in_range, lra_split_hard_reg_for): New
        function prototypes.
        (lra_assign): Change prototype.
        * lra.c (lra): Add code to deal with fails by splitting hard reg
        live ranges.

2018-03-01  Palmer Dabbelt  <palmer@sifive.com>

        * config/riscv/riscv.opt (mrelax): New option.
        * config/riscv/riscv.c (riscv_file_start): Emit ".option
        "norelax" when riscv_mrelax is disabled.
        * doc/invoke.texi (RISC-V): Document "-mrelax" and "-mno-relax".

2018-03-13  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        PR target/84743
        * config/rs6000/rs6000.c (rs6000_reassociation_width): Disable parallel
        reassociation for int modes.

2018-03-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-loop-manip.c (vect_maybe_permute_loop_masks):
        Reverse the choice between VEC_UNPACK_LO_EXPR and VEC_UNPACK_HI_EXPR
        for big-endian.
        * config/aarch64/iterators.md (hi_lanes_optab): New int attribute.
        * config/aarch64/aarch64-sve.md
        (*aarch64_sve_<perm_insn><perm_hilo><mode>): Rename to...
        (aarch64_sve_<perm_insn><perm_hilo><mode>): ...this.
        (*extend<mode><Vwide>2): Rename to...
        (aarch64_sve_extend<mode><Vwide>2): ...this.
        (vec_unpack<su>_<perm_hilo>_<mode>): Turn into a define_expand,
        renaming the old pattern to...
        (aarch64_sve_punpk<perm_hilo>_<mode>): ...this.  Only define
        unsigned packs.
        (vec_unpack<su>_<perm_hilo>_<SVE_BHSI:mode>): Turn into a
        define_expand, renaming the old pattern to...
        (aarch64_sve_<su>unpk<perm_hilo>_<SVE_BHSI:mode>): ...this.
        (*vec_unpacku_<perm_hilo>_<mode>_no_convert): Delete.
        (vec_unpacks_<perm_hilo>_<mode>): Take BYTES_BIG_ENDIAN into
        account when deciding which SVE instruction the optab should use.
        (vec_unpack<su_optab>_float_<perm_hilo>_vnx4si): Likewise.

2018-03-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.md (V4_REGNUM, V8_REGNUM, V12_REGNUM)
        (V20_REGNUM, V24_REGNUM, V28_REGNUM, P1_REGNUM, P2_REGNUM, P3_REGNUM)
        (P4_REGNUM, P5_REGNUM, P6_REGNUM, P8_REGNUM, P9_REGNUM, P10_REGNUM)
        (P11_REGNUM, P12_REGNUM, P13_REGNUM, P14_REGNUM): New define_constants.
        (tlsdesc_small_<mode>): Turn a define_expand and use
        tlsdesc_small_sve_<mode> for SVE.  Rename original define_insn to...
        (tlsdesc_small_advsimd_<mode>): ...this.
        (tlsdesc_small_sve_<mode>): New pattern.

2018-03-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/iterators.md (UNSPEC_SMUL_HIGHPART)
        (UNSPEC_UMUL_HIGHPART): New constants.
        (MUL_HIGHPART): New int iteraor.
        (su): Handle UNSPEC_SMUL_HIGHPART and UNSPEC_UMUL_HIGHPART.
        * config/aarch64/aarch64-sve.md (<su>mul<mode>3_highpart): New
        define_expand.
        (*<su>mul<mode>3_highpart): New define_insn.

2018-03-13  Eric Botcazou  <ebotcazou@adacore.com>

        PR lto/84805
        * ipa-devirt.c (odr_subtypes_equivalent_p): Do not get the ODR type of
        incomplete types.

2018-03-13  Martin Liska  <mliska@suse.cz>

        PR ipa/84658.
        * (sem_item_optimizer::sem_item_optimizer): Initialize new
        vector.
        (sem_item_optimizer::~sem_item_optimizer): Release it.
        (sem_item_optimizer::merge_classes): Register variable aliases.
        (sem_item_optimizer::fixup_pt_set): New function.
        (sem_item_optimizer::fixup_points_to_sets): Likewise.
        * ipa-icf.h: Declare new variables and functions.

2018-03-13  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/84834
        * match.pd ((A & C) != 0 ? D : 0): Use INTEGER_CST@2 instead of
        integer_pow2p@2 and test integer_pow2p in condition.
        (A < 0 ? C : 0): Similarly for @1.

        PR middle-end/84831
        * stmt.c (parse_output_constraint): If the CONSTRAINT_LEN (*p, p)
        characters starting at p contain '\0' character, don't look beyond
        that.

        PR target/84827
        * config/i386/i386.md (round<mode>2): For 387 fancy math, disable
        pattern if -ftrapping-math -fno-fp-int-builtin-inexact.

        PR target/84828
        * reg-stack.c (change_stack): Change update_end var from int to
        rtx_insn *, if non-NULL don't update just BB_END (current_block), but
        also call set_block_for_insn on the newly added insns and rescan.

        PR target/84786
        * config/i386/sse.md (sse2_loadhpd): Use Yv constraint rather than v
        on the last operand.

        PR c++/84704
        * tree.c (stabilize_reference_1): Return save_expr (e) for
        STATEMENT_LIST even if it doesn't have side-effects.

2018-03-12  Jonathan Wakely  <jwakely@redhat.com>

        * doc/invoke.texi (-mclflushopt): Fix spelling of option.

2018-03-12  Renlin Li  <renlin.li@arm.com>

        * config/aarch64/aarch64.md (movhf_aarch64): Fix mode argument to
        aarch64_output_scalar_simd_mov_immediate.

2018-03-12  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83456
        * gimple-fold.c (gimple_fold_builtin_memory_op): Avoid warning
        for perfectly overlapping calls to memcpy.
        (gimple_fold_builtin_memory_chk): Same.
        (gimple_fold_builtin_strcpy): Handle no-warning.
        (gimple_fold_builtin_stxcpy_chk): Same.
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Handle no-warning.

2018-03-12  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (abi_v4_pass_in_fpr): Add bool "named"
        parameter.  Use it for SFmode.
        (rs6000_function_arg_advance_1): Adjust.
        (rs6000_function_arg): Adjust.
        (rs6000_gimplify_va_arg): Pass false for that new parameter.

2018-03-12  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/84169
        PR rtl-optimization/84780
        * combine.c (can_combine_p): Check for a 2-insn combination whether
        the destination register is used between the two insns, too.

2018-03-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84803
        * tree-if-conv.c (ifcvt_memrefs_wont_trap): Don't do anything
        for refs DR analysis didn't process.

2018-03-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84777
        * tree-ssa-loop-ch.c (should_duplicate_loop_header_p): For
        force-vectorize loops ignore whether we are optimizing for size.

2018-03-12  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_md_asm_adjust): New function.
        (TARGET_MD_ASM_ADJUST): Define.

2018-03-12  Monk Chiang  <sh.chiang04@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_compute_stack_frame,
        nds32_emit_stack_push_multiple, nds32_emit_stack_pop_multiple,
        nds32_emit_stack_v3push, nds32_emit_stack_v3pop,
        nds32_emit_adjust_frame, nds32_expand_prologue, nds32_expand_epilogue,
        nds32_expand_prologue_v3push, nds32_expand_epilogue_v3pop): Refine.
        * config/nds32/nds32.h (NDS32_FIRST_CALLEE_SAVE_GPR_REGNUM,
        NDS32_LAST_CALLEE_SAVE_GPR_REGNUM, NDS32_V3PUSH_AVAILABLE_P): New.
        * config/nds32/nds32.md (prologue, epilogue): Use macro
        NDS32_V3PUSH_AVAILABLE_P to do checking.

2018-03-11  Jakub Jelinek  <jakub@redhat.com>

        PR debug/58150
        * dwarf2out.c (gen_enumeration_type_die): Don't guard adding
        DW_AT_declaration for ENUM_IS_OPAQUE on -gdwarf-4 or -gno-strict-dwarf,
        but on TYPE_SIZE.  Don't do anything for ENUM_IS_OPAQUE if not creating
        a new die.  Don't set TREE_ASM_WRITTEN if ENUM_IS_OPAQUE.  Guard
        addition of most attributes on !orig_type_die or the attribute not
        being present already.  Assert TYPE_VALUES is NULL for ENUM_IS_OPAQUE.

2018-03-11  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.c (nds32_cpu_cpp_builtins): Modify to define
        __NDS32_VH__ macro.
        * config/nds32/nds32.opt (mvh): New option.

2018-03-11  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-protos.h (nds32_cpu_cpp_builtins): Declare
        function.
        * config/nds32/nds32.c (nds32_cpu_cpp_builtins): New function.
        * config/nds32/nds32.h (TARGET_CPU_CPP_BUILTINS): Modify its
        definition.

2018-03-11  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-memory-manipulation.c (nds32_expand_strlen): New
        function.
        * config/nds32/nds32-multiple.md (strlensi): New pattern.
        * config/nds32/nds32-protos.h (nds32_expand_strlen): Declare function.

2018-03-11  Monk Chiang  <sh.chiang04@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/constants.md (unspec_element): Add UNSPEC_FFB,
        UNSPEC_FFMISM and UNSPEC_FLMISM.
        * config/nds32/nds32-intrinsic.c (bdesc_2arg): Add builtin description
        for ffb, ffmism and flmism.
        * config/nds32/nds32-intrinsic.md (unspec_ffb): Define new pattern.
        (unspec_ffmism): Ditto.
        (unspec_flmism): Ditto.
        (nds32_expand_builtin_impl): Check if string extension is available.
        * config/nds32/nds32.h (nds32_builtins): Add NDS32_BUILTIN_FFB,
        NDS32_BUILTIN_FFMISM and NDS32_BUILTIN_FLMISM.

2018-03-10  Vladimir Makarov  <vmakarov@redhat.com>

        Reverting patch:
        2018-03-09  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/83712
        * lra-assigns.c (assign_by_spills): Return a flag of reload
        assignment failure.  Do not process the reload assignment
        failures.  Do not spill other reload pseudos if they has the same
        reg class.
        (lra_assign): Add a return arg.  Set up from the result of
        assign_by_spills call.
        (find_reload_regno_insns, lra_split_hard_reg_for): New functions.
        * lra-constraints.c (split_reg): Add a new arg.  Use it instead of
        usage_insns if it is not NULL.
        (spill_hard_reg_in_range): New function.
        (split_if_necessary, inherit_in_ebb): Pass a new arg to split_reg.
        * lra-int.h (spill_hard_reg_in_range, lra_split_hard_reg_for): New
        function prototypes.
        (lra_assign): Change prototype.
        * lra.c (lra): Add code to deal with fails by splitting hard reg
        live ranges.

2018-03-10  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/84807
        * config/i386/i386.opt: Replace Enforcment with Enforcement.

2018-03-10  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/84620
        * dwarf2out.h (dw_val_class): Add dw_val_class_symview.
        (dw_val_node): Add val_symbolic_view.
        * dwarf2out.c (dw_line_info_table): Add symviews_since_reset.
        (symview_upper_bound): New.
        (new_line_info_table): Initialize symviews_since_reset.
        (dwarf2out_source_line): Count symviews_since_reset and set
        symview_upper_bound.
        (dw_val_equal_p): Handle symview.
        (add_AT_symview): New.
        (print_dw_val): Handle symview.
        (attr_checksum, attr_checksum_ordered): Likewise.
        (same_dw_val_p, size_of_die): Likewise.
        (value_format, output_die): Likewise.
        (add_high_low_attributes): Use add_AT_symview for entry_view.
        (dwarf2out_finish): Reset symview_upper_bound, clear
        zero_view_p.

2018-03-09  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/83969
        * config/rs6000/rs6000.c (rs6000_offsettable_memref_p): New prototype.
        Add strict argument and use it.
        (rs6000_split_multireg_move): Update for new strict argument.
        (mem_operand_gpr): Disallow all non-offsettable addresses.
        * config/rs6000/rs6000.md (*movdi_internal64): Use YZ constraint.

2018-03-09  Jakub Jelinek  <jakub@redhat.com>

        PR target/84772
        * config/rs6000/rs6000.c (rs6000_gimplify_va_arg): Mark va_arg_tmp
        temporary TREE_ADDRESSABLE before gimplification of BUILT_IN_MEMCPY.
        * config/powerpcspe/powerpcspe.c (rs6000_gimplify_va_arg): Likewise.

        PR c++/84767
        * tree-inline.c (copy_tree_body_r): For INDIRECT_REF of a remapped
        decl, use remap_type if we want to use the type.

2018-03-09  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/84526
        * gimple-ssa-warn-restrict.c (builtin_memref::set_base_and_offset):
        Remove dead code.
        (builtin_access::generic_overlap): Be prepared to handle non-array
        base objects.

2018-03-09  Alexandre Oliva  <aoliva@redhat.com>

        PR rtl-optimization/84682
        * lra-constraints.c (process_address_1): Check is_address flag
        for address constraints.
        (process_alt_operands): Likewise.
        * lra.c (lra_set_insn_recog_data): Pass asm operand locs to
        preprocess_constraints.
        * recog.h (preprocess_constraints): Add oploc parameter.
        Adjust callers.
        * recog.c (preprocess_constraints): Test address_operand for
        CT_ADDRESS constraints.

2018-03-09  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/83712
        * lra-assigns.c (assign_by_spills): Return a flag of reload
        assignment failure.  Do not process the reload assignment
        failures.  Do not spill other reload pseudos if they has the same
        reg class.
        (lra_assign): Add a return arg.  Set up from the result of
        assign_by_spills call.
        (find_reload_regno_insns, lra_split_hard_reg_for): New functions.
        * lra-constraints.c (split_reg): Add a new arg.  Use it instead of
        usage_insns if it is not NULL.
        (spill_hard_reg_in_range): New function.
        (split_if_necessary, inherit_in_ebb): Pass a new arg to split_reg.
        * lra-int.h (spill_hard_reg_in_range, lra_split_hard_reg_for): New
        function prototypes.
        (lra_assign): Change prototype.
        * lra.c (lra): Add code to deal with fails by splitting hard reg
        live ranges.

2018-03-09  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/83193
        * common/config/arm/arm-common.c (arm_parse_arch_option_name):
        Accept complain bool parameter.  Only emit errors if it is true.
        (arm_parse_cpu_option_name): Likewise.
        (arm_target_thumb_only): Adjust callers of the above.
        * config/arm/arm-protos.h (arm_parse_cpu_option_name): Adjust
        prototype to take a default true bool parameter.
        (arm_parse_arch_option_name): Likewise.

2018-03-09  David Malcolm  <dmalcolm@redhat.com>
            Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>

        PR jit/64089
        PR jit/84288
        * Makefile.in (LD_VERSION_SCRIPT_OPTION, LD_SONAME_OPTION): New.
        * configure: Regenerate.
        * configure.ac ("linker --version-script option"): New.
        ("linker soname option"): New.

2018-03-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84775
        * tree-if-conv.c (add_bb_predicate_gimplified_stmts): Delink
        immediate uses of predicate stmts and mark them modified.

        Revert
        PR tree-optimization/84178
        * tree-if-conv.c (combine_blocks): Move insert_gimplified_predicates
        to caller.
        (version_loop_for_if_conversion): Delay update_ssa call.
        (tree_if_conversion): Delay update_ssa until after predicate
        insertion.

2018-03-09  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/84763
        * config/i386/winnt.c (i386_pe_seh_cold_init): Use small pre-allocation
        when the function accesses prior frames.

2018-03-08  Jakub Jelinek  <jakub@redhat.com>

        PR debug/84456
        * dwarf2out.c (dw_loc_list): If list && loc_list->first->next, call
        gen_llsym, otherwise call maybe_gen_llsym.

        PR inline-asm/84742
        * recog.c (asm_operand_ok): Return 0 if multi-character constraint
        has ',' character inside of it.

2018-03-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/84748
        * config/aarch64/aarch64.md (*compare_cstore<mode>_insn): Mark pattern
        as clobbering CC_REGNUM.

2018-03-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/84552
        * tree-scalar-evolution.c: Include tree-into-ssa.h.
        (follow_copies_to_constant): Do not follow SSA names registered
        for update.

2018-03-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84178
        * tree-if-conv.c (combine_blocks): Move insert_gimplified_predicates
        to caller.
        (version_loop_for_if_conversion): Delay update_ssa call.
        (tree_if_conversion): Delay update_ssa until after predicate
        insertion.

2018-03-08  David Malcolm  <dmalcolm@redhat.com>

        PR tree-optimization/84178
        * tree-if-conv.c (release_bb_predicate): Remove the
        the assertion that the stmts have NULL use_ops.
        Discard the statements, asserting that they haven't
        yet been added to a BB.

2018-03-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84746
        * tree-ssa-pre.c (find_leader_in_sets): Deal with SET1 being NULL.
        (phi_translate): Pass in destination ANTIC_OUT set.
        (phi_translate_1): Likewise.  For a simplified result lookup
        a leader in ANTIC_OUT and AVAIL_OUT, not the ANTIC_IN sets.
        (phi_translate_set): Adjust.
        (do_pre_regular_insertion): Likewise.
        (do_pre_partial_partial_insertion): Likewise.

2018-03-08  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/84735
        * doc/gcov.texi: Document usage of profile files.
        * gcov-io.h: Document changes in the format.

2018-03-08  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/84404
        PR debug/84408
        * dwarf2out.c (struct dw_line_info_table): Update comments for
        view == -1.
        (FORCE_RESET_NEXT_VIEW): New.
        (FORCE_RESETTING_VIEW_P): New.
        (RESETTING_VIEW_P): Check for -1 too.
        (ZERO_VIEW_P): Likewise.
        (new_line_info_table): Force-reset next view.
        (dwarf2out_begin_function): Likewise.
        (dwarf2out_source_line): Simplify zero_view_p initialization.
        Test FORCE_RESETTING_VIEW_P and RESETTING_VIEW_P instead of
        view directly.  Omit view when omitting .loc at line 0.

2018-03-08  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84740
        * tree-switch-conversion.c (process_switch): Call build_constructors
        only if info.phi_count is non-zero.

        PR tree-optimization/84739
        * tree-tailcall.c (find_tail_calls): Check call arguments against
        DECL_ARGUMENTS (current_function_decl) rather than
        DECL_ARGUMENTS (func) when checking for tail recursion.

2018-03-07  Jakub Jelinek  <jakub@redhat.com>

        * doc/contrib.texi: Add entries for Martin Liska, David Malcolm,
        Marek Polacek, extend Vladimir Makarov's, Jonathan Wakely's and
        Volker Reichelt's entry and add entries for people that perform
        GCC fuzzy testing and report numerous bugs.

2018-03-07  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/82411
        * config/rs6000/rs6000.c (rs6000_elf_in_small_data_p): Don't put
        readonly data in sdata, if that is disabled.
        * config/rs6000/sysv4.opt (mreadonly-in-sdata): New option.
        * doc/invoke.texi (RS/6000 and PowerPC Options): Document
        -mreadonly-in-sdata option.

2018-03-07  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/84468
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Consider successor
        basic block when looking for nul assignment.

2018-03-07  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/84277
        * except.h (output_function_exception_table): Adjust prototype.
        * except.c (output_function_exception_table): Remove FNNAME parameter
        and add SECTION parameter.  Ouput one part of the table at a time.
        * final.c (final_scan_insn_1) <NOTE_INSN_SWITCH_TEXT_SECTIONS>: Output
        the first part of the exception table and emit unwind directives.
        * config/i386/i386-protos.h (i386_pe_end_cold_function): Declare.
        (i386_pe_seh_cold_init): Likewise.
        * config/i386/cygming.h (ASM_DECLARE_COLD_FUNCTION_NAME): New macro.
        (ASM_DECLARE_COLD_FUNCTION_SIZE): Likewise.
        * config/i386/i386.c (x86_expand_epilogue): Fix wording in comment.
        (ix86_output_call_insn): Emit a nop in one more case for SEH.
        * config/i386/winnt.c: Include except.h.
        (struct seh_frame_state): Add reg_offset, after_prologue and
        in_cold_section fields.
        (i386_pe_seh_end_prologue): Set seh->after_prologue.
        (i386_pe_seh_cold_init): New function.
        (i386_pe_seh_fini): Add COLD parameter and bail out if it is not equal
        to seh->in_cold_section.
        (seh_emit_push): Record the offset of the push.
        (seh_emit_save): Record the offet of the save.
        (i386_pe_seh_unwind_emit): Deal with NOTE_INSN_SWITCH_TEXT_SECTIONS.
        Test seh->after_prologue to disregard the epilogue.
        (i386_pe_end_function): Pass FALSE to i386_pe_seh_fini.
        (i386_pe_end_cold_function): New function.

2018-03-07  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/84565
        * config/aarch64/predicates.md (aarch64_simd_reg_or_zero): Use
        aarch64_simd_or_scalar_imm_zero rather than aarch64_simd_imm_zero.

        PR c++/84704
        * gimple-expr.c (create_tmp_var_raw): Set DECL_NAMELESS flag
        on tmp_var.
        * tree-pretty-print.c (dump_decl_name): For TDF_COMPARE_DEBUG,
        don't print names of DECL_NAMELESS DECL_IGNORED_P decls.

        PR middle-end/84723
        * multiple_target.c: Include tree-inline.h and intl.h.
        (expand_target_clones): Diagnose and fail if node->definition and
        !tree_versionable_function_p (node->decl).

2018-03-06  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa.h (ASM_GENERATE_INTERNAL_LABEL): Revise to use
        sprint_ul.
        (ASM_OUTPUT_ADDR_VEC_ELT): Revise for above change.
        (ASM_OUTPUT_ADDR_DIFF_ELT): Likewise.
        * config/pa/pa64-hpux.h (ASM_GENERATE_INTERNAL_LABEL): Revise as above.

2018-03-06  Jakub Jelinek  <jakub@redhat.com>

        PR target/84710
        * combine.c (try_combine): Use reg_or_subregno instead of handling
        just paradoxical SUBREGs and REGs.

2018-03-06  Claudiu Zissulescu  <claziss@synopsys.com>

         * config/arc/arc.c (arc_finalize_pic): Remove function.
         (arc_must_save_register): We use single base PIC register, remove
         checks to save/restore the PIC register.
         (arc_expand_prologue): Likewise.
         * config/arc/arc-protos.h (arc_set_default_type_attributes):
         Remove.
         (arc_verify_short): Likewise.
         (arc_attr_type): Likewise.
         * config/arc/arc.c (arc_set_default_type_attributes): Remove.
         (walk_stores): Likewise.
         (arc_address_cost): Make it static.
         (arc_verify_short): Likewise.
         (branch_dest): Likewise.
         (arc_attr_type): Likewise.
         * config/arc/arc.c (TARGET_ADJUST_INSN_LENGTH): Remove.
         (TARGET_INSN_LENGTH_PARAMETERS): Likewise.
         (arc_final_prescan_insn): Remove inserting the nops due to
         hardware hazards.  It is done in reorg step.
         (insn_length_variant_t): Remove.
         (insn_length_parameters_t): Likewise.
         (arc_insn_length_parameters): Likewise.
         (arc_get_insn_variants): Likewise.
         * config/arc/arc.h (TARGET_UPSIZE_DBR): Remove.

2018-03-06  Jakub Jelinek  <jakub@redhat.com>

        PR inline-asm/84683
        * reg-stack.c (move_for_stack_reg): If any_malformed_asm, avoid
        assertion failure.

        PR tree-optimization/84687
        * omp-simd-clone.c (simd_clone_create): Clear DECL_BUILT_IN_CLASS
        on new_node->decl.
        * match.pd (pow(C,x)*expN(y) -> expN(logN(C)*x+y)): New optimization.

2018-03-05  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000-builtin.def (rs6000_speculation_barrier):
        Rename to ppc_speculation_barrier.
        * config/rs6000/rs6000.c (rs6000_init_builtins): Rename builtin to
        __builtin_ppc_speculation_barrier.

2018-03-05  Jakub Jelinek  <jakub@redhat.com>

        PR target/84700
        * combine.c (combine_simplify_rtx): Don't try to simplify if
        if_then_else_cond returned non-NULL, but either true_rtx or false_rtx
        are equal to x.

2018-03-05  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (rs6000_loop_align): Don't align tiny loops
        to 32 bytes when compiling for POWER9.

2018-03-05  Jakub Jelinek  <jakub@redhat.com>

        PR target/84564
        * config/i386/i386.c (ix86_function_ok_for_sibcall): Check for
        regparm >= 3 with no arg reg available also for calls with
        flag_force_indirect_call.  Pass decl to ix86_function_regparm.

        PR target/84524
        * config/i386/sse.md (*<code><mode>3): Replace <mask_prefix3> with
        orig,vex.
        (*<plusminus_insn><mode>3): Likewise.  Remove <mask_operand3> uses.

2018-03-05  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/84264
        * config/rs6000/vector.md (mov<mode>): Disallow altivec memory operands.

2018-03-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84486
        * tree-ssa-pre.c (create_expression_by_pieces): Remove dead code.
        When inserting a __builtin_assume_aligned call set the LHS
        SSA name alignment info accordingly.

2018-03-05  Wilco Dijkstra  <wdijkstr@arm.com>

        PR tree-optimization/84114
        * config/aarch64/aarch64.c (aarch64_reassociation_width)
        Avoid reassociation of FLOAT_MODE addition.

2018-03-05  Olga Makhotina  <olga.makhotina@intel.com>

        * common/config/i386/i386-common.c (OPTION_MASK_ISA_PCONFIG_SET,
        OPTION_MASK_ISA_PCONFIG_UNSET, OPTION_MASK_ISA_WBNOINVD_SET,
        OPTION_MASK_ISA_WBNOINVD_UNSET): New definitions.
        (ix86_handle_option): Handle -mpconfig and -mwbnoinvd.
        * config.gcc (pconfigintrin.h, wbnoinvdintrin.h) : Add headers.
        * config/i386/cpuid.h (bit_PCONFIG, bit_WBNOINVD): New.
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect -mpconfig
        and -mwbnoinvd.
        * config/i386/i386-builtin.def (__builtin_ia32_wbnoinvd,
        __builtin_ia32_wbinvd): New builtins.
        (SPECIAL_ARGS2): New.
        * config/i386/i386-c.c (__WBNOINVD__, __PCONFIG__): New.
        (SPECIAL_ARGS2): New.
        * config/i386/i386.c (ix86_target_string): Add -mpconfig and -mwbnoinvd.
        (ix86_valid_target_attribute_inner_p): Ditto.
        (ix86_init_mmx_sse_builtins): Add special_args2.
        * config/i386/i386.h (TARGET_PCONFIG, TARGET_PCONFIG_P, TARGET_WBNOINVD,
        TARGET_WBNOINVD_P): New.
        * config/i386/i386.md (UNSPECV_WBINVD, UNSPECV_WBNOINVD): New.
        (define_insn "wbinvd", define_insn "wbnoinvd"): New.
        * config/i386/i386.opt: Add -mpconfig and -mwbnoinvd.
        * config/i386/immintrin.h (_wbinvd): New intrinsic.
        * config/i386/pconfigintrin.h: New file.
        * config/i386/wbnoinvdintrin.h: Ditto.
        * config/i386/x86intrin.h: Add headers pconfigintrin.h and wbnoinvdintrin.h.
        * doc/invoke.texi (-mpconfig, -mwbnoinvd): New.

2018-03-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84670
        * tree-ssa-pre.c (struct bb_bitmap_sets): Add visited_with_visited_succs
        member.
        (BB_VISITED_WITH_VISITED_SUCCS): New define.
        (compute_antic): Initialize BB_VISITED_WITH_VISITED_SUCCS.
        (compute_antic_aux): Only assert the number of values in ANTIC_IN
        doesn't grow if all successors (recursively) were visited at least
        once.

2018-03-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84650
        * tree-ssa-loop-im.c (pass_lim::execute): Reset the SCEV cache
        if executed in the loop pipeline.

2018-03-05  Sandra Loosemore  <sandra@codesourcery.com>

        * doc/configfiles.texi (Configuration Files): Move info about
        conditionalizing $target-protos.h to...
        * doc/sourcebuild.texi (Back End): Here.  Explain how $target.h
        differs from $target-protos.h.

2018-03-05  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-protos.h (nds32_expand_setmem): Declare.
        * config/nds32/nds32-multiple.md (setmemsi): Define.
        * config/nds32/nds32-memory-manipulation.c
        (nds32_gen_dup_4_byte_to_word_value): New.
        (emit_setmem_word_loop): New.
        (emit_setmem_byte_loop): New.
        (nds32_expand_setmem_loop): New.
        (nds32_expand_setmem_loop_v3m): New.
        (nds32_expand_setmem_unroll): New.
        (nds32_expand_setmem): New.

2018-03-04  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-memory-manipulation.c
        (nds32_emit_load_store): New.
        (nds32_emit_post_inc_load_store): New.
        (nds32_emit_mem_move): New.
        (nds32_emit_mem_move_block): New.
        (nds32_expand_movmemsi_loop_unknown_size): New.
        (nds32_expand_movmemsi_loop_known_size): New.
        (nds32_expand_movmemsi_loop): New.
        (nds32_expand_movmemsi_unroll): New.
        (nds32_expand_movmemqi): Rename ...
        (nds32_expand_movmemsi): ... to this.
        * config/nds32/nds32-multiple.md (movmemqi): Rename ...
        (movmemsi): ... to this.
        * config/nds32/nds32-protos.h (nds32_expand_movmemqi): Rename ...
        (nds32_expand_movmemsi): ... to this.

2018-03-04  Kito Cheng  <kito.cheng@gmail.com>
            Monk Chiang  <sh.chiang04@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-protos.h
        (nds32_expand_load_multiple): New arguments.
        (nds32_expand_store_multiple): Ditto.
        (nds32_valid_multiple_load_store): Rename ...
        (nds32_valid_multiple_load_store_p): ... to this.
        * config/nds32/nds32-memory-manipulation.c
        (nds32_expand_load_multiple): Refine implementation.
        (nds32_expand_store_multiple): Ditto.
        * config/nds32/nds32-multiple.md
        (load_multiple): Update nds32_expand_load_multiple interface.
        (store_multiple): Update nds32_expand_store_multiple interface.
        * config/nds32/nds32-predicates.c
        (nds32_valid_multiple_load_store): Rename ...
        (nds32_valid_multiple_load_store_p): ... to this and refine
        implementation.
        * config/nds32/predicates.md
        (nds32_load_multiple_and_update_address_operation): New predicate.
        (nds32_store_multiple_and_update_address_operation): New predicate.

2018-03-04  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.md (type): Add load_multiple and store_multiple.
        (combo): New attribute.
        * config/nds32/nds32-multiple.md: Refine patterns with new attributes.

2018-03-03  Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32.opt: Change -mcmodel= default value.

2018-03-03  Kito Cheng  <kito.cheng@gmail.com>
            Monk Chiang  <sh.chiang04@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/constants.md (unspec_element): New enum.
        * config/nds32/constraints.md (Umw): New constraint.
        * config/nds32/nds32-intrinsic.c: Add more builtin functions.
        * config/nds32/nds32-intrinsic.md: Likewise.
        * config/nds32/nds32-md-auxiliary.c (nds32_regno_to_enable4): New.
        (nds32_valid_smw_lwm_base_p): New.
        (nds32_output_smw_single_word): New.
        (nds32_output_lmw_single_word): New.
        (nds32_expand_unaligned_load): New.
        (nds32_expand_unaligned_store): New.
        * config/nds32/nds32-protos.h (nds32_valid_smw_lwm_base_p): Declare.
        (nds32_output_smw_single_word): Declare.
        (nds32_output_lmw_single_word): Declare.
        (nds32_expand_unaligned_load): Declare.
        (nds32_expand_unaligned_store): Declare.
        * config/nds32/nds32.h (nds32_builtins): Add NDS32_BUILTIN_UALOAD_HW,
        NDS32_BUILTIN_UALOAD_W, NDS32_BUILTIN_UALOAD_DW,
        NDS32_BUILTIN_UASTORE_HW, NDS32_BUILTIN_UASTORE_W,
        NDS32_BUILTIN_UASTORE_DW.
        * config/nds32/predicates.md (nds32_lmw_smw_base_operand): New
        predicate.

2018-03-03  Monk Chiang  <sh.chiang04@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-intrinsic.c
        (nds32_expand_builtin_null_ftype_reg): Delete.
        (nds32_expand_builtin_reg_ftype_imm): Ditto.
        (nds32_expand_builtin_null_ftype_reg_imm): Ditto.
        (nds32_read_argument): New.
        (nds32_legitimize_target): Ditto.
        (nds32_legitimize_argument): Ditto.
        (nds32_check_constant_argument): Ditto.
        (nds32_expand_unop_builtin): Ditto.
        (nds32_expand_unopimm_builtin): Ditto.
        (nds32_expand_binop_builtin): Ditto.
        (nds32_builtin_decl_impl): Ditto.
        (builtin_description): Ditto.
        (nds32_expand_builtin_impl): Rewrite with new infrastructure.
        (nds32_init_builtins_impl): Ditto.
        * config/nds32/nds32.c (TARGET_BUILTIN_DECL): Define.
        (nds32_builtin_decl): New.
        * config/nds32/nds32.h (nds32_builtins): Add NDS32_BUILTIN_COUNT.
        * config/nds32/nds32-protos.h (nds32_builtin_decl_impl): Declare.

2018-03-02  Jeff Law  <law@redhat.com>

        * reorg.c (stop_search_p): Handle DEBUG_INSN.
        (redundant_insn, fill_simple_delay_slots): Likewise.
        (fill_slots_from_thread): Likewise.
        * resource.c (mark_referenced_resources): Likewise.
        (mark_set_resources, find_dead_or_set_registers): Likewise.

2018-03-02  Jakub Jelinek  <jakub@redhat.com>

        * substring-locations.h (format_warning_va): Formatting fix for
        ATTRIBUTE_GCC_DIAG.
        (format_warning_at_substring): Fix up ATTRIBUTE_GCC_DIAG second
        argument.
        (format_warning_n_va, format_warning_at_substring_n): New prototypes.
        * substring-locations.c: Include intl.h.
        (format_warning_va): Turned into small wrapper around
        format_warning_n_va, renamed to ...
        (format_warning_n_va): ... this, add N and PLURAL_GMSGID arguments,
        rename GMSGID to SINGULAR_GMSGID, if SINGULAR_GMSGID != PLURAL_GMSGID,
        use ngettext.
        (format_warning_at_substring_n): New function.
        * gimple-ssa-sprintf.c: Remove GCC diagnostic ignored pragma.
        (fmtwarn): Add ATTRIBUTE_GCC_DIAG.  Turn into a copy of
        format_warning_at_substring with just a shorter name instead of
        const function pointer.
        (fmtwarn_n): New function.
        (maybe_warn, format_directive, parse_directive): Use fmtwarn_n where
        appropriate, get rid of all the fmtstr temporaries, move conditionals
        with G_() wrapped string literals directly into fmtwarn arguments,
        cast dir.len to (int), formatting fixes.

2018-03-02  Thomas Schwinge  <thomas@codesourcery.com>

        * doc/invoke.texi: Remove "Cilk Plus" references.

2018-03-02  Jakub Jelinek  <jakub@redhat.com>
            Richard Biener  <rguenther@suse.de>

        PR ipa/84628
        * expr.c (expand_expr_real_1) <case CALL_EXPR>: Don't emit diagnostics
        for error or warning attributes if CALL_FROM_THUNK_P is set.
        Formatting fixes.

2018-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR target/56540
        * config/pa/pa.h (TARGET_CPU_CPP_BUILTINS): Predefine
        __SIZEOF_128__ macro if HPUX_LONG_DOUBLE_LIBRARY.

        PR target/56540
        * config/ia64/ia64.h (TARGET_CPU_CPP_BUILTINS): Predefine
        __SIZEOF_{FPREG,FLOAT{80,128}}__ macros.

        * predict.c (test_prediction_value_range): Use PROB_UNINITIALIZED
        instead of -1U in last predictors element's probability member.

2018-03-02  Eric Botcazou  <ebotcazou@adacore.com>

        PR ipa/83983
        * ipa-devirt.c (odr_subtypes_equivalent_p): Get the ODR type of both
        arguments if they are comparable.

2018-03-02  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84634
        * tree-vect-stmts.c (vectorizable_store, vectorizable_load): Replace
        masks and masked_loop_p with a single loop_masks, making sure it's
        null for bb vectorization.

2018-03-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-data-refs.c (vect_analyze_data_ref_dependence)
        (vect_analyze_data_ref_access): Use loop->safe_len rather than
        loop->force_vectorize to check whether there is no alias.

2018-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR target/84614
        * rtl.h (prev_real_nondebug_insn, next_real_nondebug_insn): New
        prototypes.
        * emit-rtl.c (next_real_insn, prev_real_insn): Fix up function
        comments.
        (next_real_nondebug_insn, prev_real_nondebug_insn): New functions.
        * cfgcleanup.c (try_head_merge_bb): Use prev_real_nondebug_insn
        instead of a loop around prev_real_insn.
        * combine.c (move_deaths): Use prev_real_nondebug_insn instead of
        prev_real_insn.

        PR inline-asm/84625
        * config/i386/i386.c (ix86_print_operand): Use conditional
        output_operand_lossage instead of gcc_assert if CONST_VECTOR is not
        zero vector.

2018-03-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84427
        * tree-ssa-pre.c (bitmap_remove_expr_from_set): Remove.
        (bitmap_set_subtract_values): Rewrite to handle multiple
        exprs per value.
        (clean): Likewise.
        (prune_clobbered_mems): Likewise.
        (phi_translate): Take edge instead of pred/phiblock.
        (phi_translate_1): Likewise.
        (phi_translate_set): Likewise.  Insert all translated
        exprs for a value into the set, keeping possibly multiple
        expressions per value.
        (compute_antic_aux): Adjust for phi_translate changes.
        When intersecting union the expressions and prune those
        not in the final value set, keeping possibly multiple
        expressions per value.  Do not use value-insertion
        for unioning ANTIC_OUT U EXP_GEN - TMP_GEN but merge
        all expressions.  Add verification that the value-sets
        only shrink during iteration.
        (compute_partial_antic_aux): Adjust for the phi_translate changes.
        (do_pre_regular_insertion): Likewise.
        (do_pre_partial_partial_insertion): Likewise.

2018-03-02  Richard Biener  <rguenther@suse.de>

        PR target/82005
        * config/darwin.c (saved_debug_info_level): New static global.
        (darwin_asm_lto_start): Disable debug info generation for LTO out.
        (darwin_asm_lto_end): Restore debug info generation settings.

2018-03-01  Martin Liska  <mliska@suse.cz>

        PR sanitizer/82484
        * sanopt.c (sanitize_rewrite_addressable_params): Do not handle
        volatile arguments.

2018-03-01  Richard Biener  <rguenther@suse.de>

        PR debug/84645
        * dwarf2out.c (gen_variable_die): Properly handle late VLA
        type annotation with LTO when debug was disabled at compile-time.

2018-03-01  Matthew Fortune  <mfortune@gmail.com>

        * config/mips/mips.c (mips_final_prescan_insn): Fix incorrect
        XINT with INTVAL.
        (mips_final_postscan_insn): Likewise.

2018-03-01  Richard Sandiford  <richard.sandiford@linaro.org>

        PR rtl-optimization/84528
        * alias.c (init_alias_target): Add commentary.
        (init_alias_analysis): Only give HARD_FRAME_POINTER_REGNUM
        a unique base value if the frame pointer is not eliminated
        to the stack pointer.

2018-03-01  Tom de Vries  <tom@codesourcery.com>

        PR rtl-optimization/83327
        * lra-int.h (hard_regs_spilled_into): Declare.
        * lra.c (hard_regs_spilled_into): Define.
        (init_reg_info): Init hard_regs_spilled_into.
        * lra-spills.c (assign_spill_hard_regs): Update hard_regs_spilled_into.
        * lra-lives.c (make_hard_regno_born, make_hard_regno_dead)
        (process_bb_lives): Handle hard_regs_spilled_into.
        (lra_create_live_ranges_1): Before doing liveness propagation, clear
        regs in all_hard_regs_bitmap if set in hard_regs_spilled_into.

2018-02-28  David Edelsohn  <dje.gcc@gmail.com>

        * config.gcc (powerpc-ibm-aix7.1.*): New stanza.
        (powerpc-ibm-aix[789]*): Default to AIX 7.2.
        * config/rs6000/aix71.h (TARGET_DEFAULT): Revert to Power4 ISA.
        * config/rs6000/aix72.h: New file.

2018-02-28  Jakub Jelinek  <jakub@redhat.com>

        * gimple-ssa-warn-restrict.c (maybe_diag_overlap): Use warning_n
        instead of warning_at with conditional singular and plural messages
        where possible.

        PR target/52991
        * stor-layout.c (update_alignment_for_field): For
        targetm.ms_bitfield_layout_p (rli->t), if !is_bitfield
        && !DECL_PACKED (field), do the alignment update, just use
        only desired_align instead of MAX (type_align, desired_align)
        as the alignment.
        (place_field): Don't do known_align < desired_align handling
        early if targetm.ms_bitfield_layout_p (rli->t) and rli->prev_field
        is non-NULL, instead do it after rli->prev_field handling and
        only if not within a bitfield word.  For DECL_PACKED (field)
        use type_align of BITS_PER_UNIT.

2018-02-28  Eric Botcazou  <ebotcazou@adacore.com>

        * config/aarch64/aarch64.c (aarch64_emit_probe_stack_range): Remove
        superfluous parentheses and trailing spaces.

2018-02-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84584
        * graphite-scop-detection.c (scop_detection::add_scop): Discard
        SCoPs with fake exit edge.

2018-02-28  Martin Liska  <mliska@suse.cz>

        PR testsuite/84597
        * timevar.c (timer::print): Fix format to properly print 100%
        values.

2018-02-28  Richard Biener  <rguenther@suse.de>

        PR middle-end/84607
        * genmatch.c (capture_info::walk_match): Do not mark
        captured expressions without operands as expr_p given
        they act more like predicates and should be subject to
        "lost tail" side-effect preserving.

2018-02-28  Alexandre Oliva  <aoliva@redhat.com>

        PR rtl-optimization/81611
        * auto-inc-dec.c (attempt_change): Move dead note from
        mem_insn if it's the next use of regno
        (find_address): Take address use of reg holding
        non-incremented value.  Add parm to limit search to the named
        reg only.
        (merge_in_block): Attempt to use a mem insn that is the next
        use of the original regno.

2018-02-27  Martin Sebor  <msebor@redhat.com>

        PR c++/83871
        * gcc/doc/invoke.texi (-Wmissing-attributes): New option.
        * gcc/print-tree.c (print_node): Handle DECL_UNINLINABLE.

2018-02-27  Martin Sebor  <msebor@redhat.com>

        PR translation/84207
        * diagnostic-core.h (warning_n, error_n, inform_n): Change
        n argument to unsigned HOST_WIDE_INT.
        * diagnostic.c (warning_n, error_n, inform_n): Ditto.
        (diagnostic_n_impl): Ditto.  Handle arguments in excess of LONG_MAX.
        * gimple-ssa-sprintf.c (format_directive): Simplify inform_n call.
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Use warning_n.

2018-02-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84512
        * tree-vect-loop.c (vect_compute_single_scalar_iteration_cost):
        Do not use the estimate returned from record_stmt_cost for
        the scalar iteration cost but sum properly using add_stmt_cost.

2018-02-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84466
        * graphite-scop-detection.c (scop_detection::stmt_simple_for_scop_p):
        Adjust last change to less strictly validate use operands.

2018-02-27  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/84548
        * gcov.c (process_file): Allow partial overlap and consider it
        also as group functions.
        (output_lines): Properly calculate range of lines for a group.

2018-02-27  Martin Liska  <mliska@suse.cz>

        * timevar.c (timer::print_row): Remove 'usr', 'sys', 'wall' and
        'ggc' suffixes.  Change first column width.
        (timer::print): Fix formatting of the column.

2018-02-27  Alexandre Oliva  <aoliva@redhat.com>

        * tree-ssa-live.c (remove_unused_scope_block_p): Do not
        preserve inline entry blocks for the sake of debug inline
        entry point markers alone.
        (remove_unused_locals): Suggest in comments a better place to
        force the preservation of inline entry blocks that are
        otherwise unused, but do not preserve them.

2018-02-26  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386.c (ix86_output_indirect_jmp): Update comments.

2018-02-26  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/84039
        * config/i386/constraints.md (Bs): Replace
        ix86_indirect_branch_register with
        TARGET_INDIRECT_BRANCH_REGISTER.
        (Bw): Likewise.
        * config/i386/i386.md (indirect_jump): Likewise.
        (tablejump): Likewise.
        (*sibcall_memory): Likewise.
        (*sibcall_value_memory): Likewise.
        Peepholes of indirect call and jump via memory: Likewise.
        (*sibcall_GOT_32): Disallowed for TARGET_INDIRECT_BRANCH_REGISTER.
        (*sibcall_value_GOT_32): Likewise.
        * config/i386/predicates.md (indirect_branch_operand): Likewise.
        (GOT_memory_operand): Likewise.
        (call_insn_operand): Likewise.
        (sibcall_insn_operand): Likewise.
        (GOT32_symbol_operand): Likewise.
        * config/i386/i386.h (TARGET_INDIRECT_BRANCH_REGISTER): New.

2018-02-26  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/83496
        * reorg.c (steal_delay_list_from_target): Change REDUNDANT array from
        booleans to RTXes.  Call fix_reg_dead_note on every non-null element.
        (steal_delay_list_from_fallthrough): Call fix_reg_dead_note on a
        redundant insn, if any.
        (relax_delay_slots): Likewise.
        (update_reg_unused_notes): Rename REDUNDANT_INSN to OTHER_INSN.

2018-02-26  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83965
        * tree-vect-patterns.c (vect_reassociating_reduction_p): Assume
        that grouped statements are part of a reduction chain.  Return
        true if the statement is not marked as a reduction itself but
        is part of a group.
        (vect_recog_dot_prod_pattern): Don't check whether the statement
        is part of a group here.
        (vect_recog_sad_pattern): Likewise.
        (vect_recog_widen_sum_pattern): Likewise.

2018-02-26  Eric Botcazou  <ebotcazou@adacore.com>

        PR debug/84545
        * final.c (rest_of_clean_state): Also look for calls inside sequences.

2018-02-26  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/84530
        * config/i386/i386-protos.h (ix86_output_indirect_jmp): Remove
        the bool argument.
        (ix86_output_indirect_function_return): New prototype.
        (ix86_split_simple_return_pop_internal): Likewise.
        * config/i386/i386.c (indirect_return_via_cx): New.
        (indirect_return_via_cx_bnd): Likewise.
        (indirect_thunk_name): Handle return va CX_REG.
        (output_indirect_thunk_function): Create alias for
        __x86_return_thunk_[re]cx and __x86_return_thunk_[re]cx_bnd.
        (ix86_output_indirect_jmp): Remove the bool argument.
        (ix86_output_indirect_function_return): New function.
        (ix86_split_simple_return_pop_internal): Likewise.
        * config/i386/i386.md (*indirect_jump): Don't pass false
        to ix86_output_indirect_jmp.
        (*tablejump_1): Likewise.
        (simple_return_pop_internal): Change it to define_insn_and_split.
        Call ix86_split_simple_return_pop_internal to split it for
        -mfunction-return=.
        (simple_return_indirect_internal): Call
        ix86_output_indirect_function_return instead of
        ix86_output_indirect_jmp.

2018-02-26  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/84405
        * vec.h (vec_default_construct): For BROKEN_VALUE_INITIALIZATION use
        memset and value initialization afterwards.

2018-02-26  Christophe Lyon  <christophe.lyon@linaro.org>

        * Makefile.in (lto-wrapper): Use ALL_LINKERFLAGS.

2018-02-26  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

        PR target/84521
        * common/config/aarch64/aarch64-common.c
        (aarch_option_optimization_table[]): Switch
        off fomit-frame-pointer

2018-02-26  Kito Cheng  <kito.cheng@gmail.com>
            Chung-Ju Wu  <jasonwucj@gmail.com>

        * config/nds32/nds32-multiple.md (load_multiple): Disallow
        volatile memory.
        (store_multiple): Ditto.

2018-02-26  Kito Cheng  <kito.cheng@gmail.com>

        * config.gcc: Add --with-cpu support for nds32 target.
        * config/nds32/nds32-opts.h (nds32_cpu_type): New.
        * config/nds32/nds32.opt: Add -mcpu= option.

2018-02-25  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.opt (mvrsave=no, mvrsave=yes, isel=no,
        isel=yes): Warn for these deprecated options.

2018-02-23  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/aix71.h (TARGET_DEFAULT): Change to
        ISA_2_5_MASKS_EMBEDDED.

2018-02-23  Jakub Jelinek  <jakub@redhat.com>

        * ipa-prop.c (ipa_vr_ggc_hash_traits::hash): Hash p->min and
        p->max as pointers rather than using iterative_hash_expr.

2018-02-23  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-builtin.def: Change VSIGNED2 and VUNSIGNED2
        macro expansions from BU_VSX_2 to BU_P8V_VSX_2 and BU_VSX_OVERLOAD_2 to
        BU_P8V_OVERLOAD_2.
        * config/rs6000/rs6000-c.c: Change VSX_BUILTIN_VEC_VSIGNED2 to
        P8V_BUILTIN_VEC_VSIGNED2.  Change VSX_BUILTIN_VEC_VUNSIGNED2 to
        P8V_BUILTIN_VEC_VUNSIGNED2.

2018-02-22  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/81572
        * lra-int.h (LRA_UNKNOWN_ALT, LRA_NON_CLOBBERED_ALT): New macros.
        * lra.c (lra_set_insn_recog_data, lra_update_insn_recog_data): Use
        LRA_UNKNOWN_ALT.
        * lra-constraints.c (curr_insn_transform): Set up
        LRA_NON_CLOBBERED_ALT for moves processed on the fast path.  Use
        LRA_UNKNOWN_ALT.
        (remove_inheritance_pseudos): Use LRA_UNKNOWN_ALT.
        * lra-eliminations.c (spill_pseudos): Ditto.
        (process_insn_for_elimination): Ditto.
        * lra-lives.c (reg_early_clobber_p): Use the new macros.
        * lra-spills.c (spill_pseudos): Use LRA_UNKNOWN_ALT and
        LRA_NON_CLOBBERED_ALT.

2018-02-22  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/84480
        * gimple-fold.c (gimple_fold_builtin_strcpy): Move warnings
        to maybe_diag_stxncpy_trunc.  Call it.
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Integrate warnings
        from gimple_fold_builtin_strcpy.  Print inlining stack.
        (handle_builtin_stxncpy): Print inlining stack.
        * tree-ssa-strlen.h (maybe_diag_stxncpy_trunc): Declare.

2018-02-22  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/84176
        * config/i386/i386.c (ix86_set_indirect_branch_type): Issue an
        error when -mindirect-branch=thunk-extern, -fcf-protection=branch
        and -fcheck-pointer-bounds are used together.
        (indirect_thunk_prefix): New enum.
        (indirect_thunk_need_prefix): New function.
        (indirect_thunk_name): Replace need_bnd_p with need_prefix.  Use
        "_nt" instead of "_bnd" for NOTRACK prefix.
        (output_indirect_thunk): Replace need_bnd_p with need_prefix.
        (output_indirect_thunk_function): Likewise.
        (): Likewise.
        (ix86_code_end): Update output_indirect_thunk_function calls.
        (ix86_output_indirect_branch_via_reg): Replace
        ix86_bnd_prefixed_insn_p with indirect_thunk_need_prefix.
        (ix86_output_indirect_branch_via_push): Likewise.
        (ix86_output_function_return): Likewise.
        * doc/invoke.texi: Document -mindirect-branch=thunk-extern is
        incompatible with -fcf-protection=branch and
        -fcheck-pointer-bounds.

2018-02-22  Steve Ellcey  <sellcey@cavium.com>

        PR target/83335
        * config/aarch64/aarch64.c (aarch64_print_address_internal):
        Change gcc_assert call to output_operand_lossage.

2018-02-22  Steve Ellcey  <sellcey@cavium.com>

        * doc/extend.texi (__builtin_extend_pointer): Document builtin.

2018-02-22  DJ Delorie  <dj@redhat.com>
            Sebastian Perta  <sebastian.perta@renesas.com>
            Oleg Endo  <olegendo@gcc.gnu.org>

        * config/rx/rx.c (rx_rtx_costs): New function.
        (TARGET_RTX_COSTS): Override to use rx_rtx_costs.

2018-02-22  Thomas Preud'homme  <thomas.preudhomme@arm.com>

        * config/arm/t-multilib: Map Armv8-R to Armv7 multilibs.

2018-02-22  Martin Liska  <mliska@suse.cz>

        PR driver/83193
        * common/config/arm/arm-common.c (arm_print_hint_for_cpu_option):
        Add "native" as a possible value.

2018-02-22  Martin Liska  <mliska@suse.cz>

        PR driver/83193
        * config/i386/i386.c (ix86_option_override_internal):
        Add "native" as a possible value for -march and -mtune.

2018-02-22  Jakub Jelinek  <jakub@redhat.com>

        PR target/84502
        * stor-layout.c (finalize_type_size): Propagate TYPE_EMPTY_P flag
        to all type variants.

        PR tree-optimization/84503
        * gimple-ssa-store-merging.c (merged_store_group::merge_into): Compute
        width as info->bitpos + info->bitsize - start.
        (merged_store_group::merge_overlapping): Simplify width computation.
        (check_no_overlap): New function.
        (imm_store_chain_info::try_coalesce_bswap): Compute expected
        start + width and last_order of the group, fail if check_no_overlap
        fails.
        (imm_store_chain_info::coalesce_immediate_stores): Don't merge info
        to group if check_no_overlap fails.

2018-02-21  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/altivec.md: Delete contraint arguments to
        define_expand, define_split, and define_peephole2, and in
        define_insn_and_split if always unused.
        * config/rs6000/darwin.md: Ditto.
        * config/rs6000/dfp.md: Ditto.
        * config/rs6000/rs6000.md: Ditto.
        * config/rs6000/sync.md: Ditto.
        * config/rs6000/vector.md: Ditto.
        * config/rs6000/vsx.md: Ditto.

2018-02-21  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/altivec.md: Write output control strings as braced
        blocks instead of double-quoted strings.
        * config/rs6000/darwin.md: Ditto.
        * config/rs6000/rs6000.md: Ditto.
        * config/rs6000/vector.md: Ditto.
        * config/rs6000/vsx.md: Ditto.

2018-02-21  Jason Merrill  <jason@redhat.com>

        PR c++/84314 - ICE with templates and fastcall attribute.
        * attribs.c (build_type_attribute_qual_variant): Remove assert.

2018-02-21  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-cp.c (determine_versionability): Fix comment typos.

2018-02-21  Jan Hubicka  <hubicka@ucw.cz>

        PR c/84229
        * ipa-cp.c (determine_versionability): Do not version functions caling
        va_arg_pack.

2018-02-21  Martin Liska  <mliska@suse.cz>

        PR driver/83193
        * config/aarch64/aarch64.c (aarch64_print_hint_for_core_or_arch):
        Add "native" as a possible value.
        * config/aarch64/aarch64.h (HAVE_LOCAL_CPU_DETECT):  Define
        the macro when native cpu detection is available.

2018-02-21  Martin Liska  <mliska@suse.cz>

        PR driver/83193
        * common/config/arm/arm-common.c (arm_print_hint_for_arch_option):
        Add "native" as a possible value.
        * config/arm/arm.h (HAVE_LOCAL_CPU_DETECT): Define the macro
        when native cpu detection is available.

2018-02-21  Jakub Jelinek  <jakub@redhat.com>
            Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/84478
        * gimple-fold.h (get_range_strlen): Add a bool argument defaulted to
        false.
        * gimple-fold.c (get_range_strlen): Make minlen const and assume it
        can't be NULL.  Change FUZZY from bool to int, for 1 add PHI/COND_EXPR
        support which is conservatively correct, for 2 only stay conservative
        for maxlen.  Formatting and comment capitalization fixes.  Add STRICT
        argument to the 2 argument get_range_strlen, adjust 6 arg
        get_range_strlen caller and clear minmaxlen[0] and [1] if it returned
        false.
        (get_maxval_strlen): Adjust 6 arg get_range_strlen caller.
        (gimple_fold_builtin_strlen): Pass true as last argument to
        get_range_strlen.

2018-02-20  Martin Sebor  <msebor@redhat.com>

        PR middle-end/84095
        * gimple-ssa-warn-restrict.c (builtin_memref::extend_offset_range): New.
        (builtin_memref::set_base_and_offset): Same.  Handle inner references.
        (builtin_memref::builtin_memref): Factor out parts into
        set_base_and_offset and call it.

2018-02-20  Richard Sandiford  <richard.sandiford@linaro.org>

        PR middle-end/84406
        * optabs-query.c (find_widening_optab_handler_and_mode): If from_mode
        is a scalar_int_mode, assert that to_mode is a scalar_int_mode with
        greater precision.  If to_mode is a MODE_PARTIAL_INT, stop the
        search at the associated MODE_INT.

2018-02-20  Jeff Law  <law@redhat.com>

        PR middle-end/82123
        PR tree-optimization/81592
        PR middle-end/79257
        * gimple-ssa-sprintf.c (format_integer): Query EVRP range analyzer
        for range data rather than using global data.
        * gimple-ssa-sprintf.c (get_int_range): Query EVRP range analyzer for
        range data rather than using global data.
        * gimple-ssa-sprintf.c (get_int_range): Accept vr_values parameter
        pass it to children as needed.
        (struct directive::fmtresult): Similarly.
        (struct directive::set_width): Similarly.
        (struct directive::set_precision): Similarly.
        (format_integer, format_directive, parse_directive): Similarly.
        (format_none): Accept unnamed vr_values parameter.
        (format_percent, format_floating, format_character): Similarly.
        (format_string, format_plain): Similarly.
        * gimple-ssa-sprintf.c (sprintf_dom_walker::handle_gimple_call): Query
        the EVRP range analyzer for range data rather than using global data.
        * gimple-ssa-sprintf.c: Include alloc-pool.h, vr-values.h and 
        gimple-ssa-evrp-analyze.h
        (class sprintf_dom_walker): Add after_dom_children member function.
        Add evrp_range_analyzer member.
        (sprintf_dom_walker::before_dom_children): Call into the EVRP
        range analyzer as needed.
        (sprintf_dom_walker::after_dom_children): New member function.
        * gimple-ssa-evrp-analyze.c (evrp_range_analyzer::enter): Do nothing
        if not optimizing.
        (evrp_range_analyzer::record_ranges_from_stmt): Likewise.
        (evrp_range_analyzer::pop_to_marker): Likewise.

2018-02-20  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84419
        * internal-fn.c (expand_call_mem_ref): Create a TARGET_MEM_REF
        with the required type if its current type is compatible but
        different.

2018-02-20  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/82004
        * match.pd (pow(C,x) -> exp(log(C)*x)): Delay all folding until
        after vectorization.

2018-02-20  Martin Liska  <mliska@suse.cz>

        PR driver/83193
        * config/aarch64/aarch64.c (aarch64_print_hint_for_core_or_arch): Print
        possible values if we don't have a hint.

2018-02-20  Martin Liska  <mliska@suse.cz>

        PR c/84310
        PR target/79747
        * final.c (shorten_branches): Build align_tab array with one
        more element.
        * opts.c (finish_options): Add alignment option limit check.
        (MAX_CODE_ALIGN): Likewise.
        (MAX_CODE_ALIGN_VALUE): Likewise.
        * doc/invoke.texi: Document maximum allowed option value for
        all -falign-* options.

2018-02-19  Jakub Jelinek  <jakub@redhat.com>

        PR target/84146
        * reg-notes.def (REG_CALL_ARG_LOCATION): New reg note.
        * insn-notes.def (NOTE_INSN_CALL_ARG_LOCATION): Remove.
        * var-tracking.c (emit_note_insn_var_location): Remove all references
        to NOTE_INSN_CALL_ARG_LOCATION.
        (emit_notes_in_bb): Emit arguments as REG_CALL_ARG_LOCATION note on
        the CALL_INSN rather than separate NOTE_INSN_CALL_ARG_LOCATION note.
        Use copy_rtx_if_shared.
        * dwarf2out.c (gen_subprogram_die): Use XEXP with 0 instead of
        NOTE_VAR_LOCATION on ca_loc->call_arg_loc_note.
        (dwarf2out_var_location): Remove handling of
        NOTE_INSN_CALL_ARG_LOCATION, instead handle REG_CALL_ARG_LOCATION note
        on call_insn.
        * final.c (final_scan_insn): Remove all references to
        NOTE_INSN_CALL_ARG_LOCATION.
        (rest_of_clean_state): Likewise.  Remove REG_CALL_ARG_LOCATION notes
        before dumping final insns.
        * except.c (emit_note_eh_region_end): Remove all references to
        NOTE_INSN_CALL_ARG_LOCATION.
        * config/alpha/alpha.c (alpha_pad_function_end): Likewise.
        * config/c6x/c6x.c (c6x_gen_bundles): Likewise.
        * config/arc/arc.c (hwloop_optimize): Likewise.
        * config/arm/arm.c (create_fix_barrier): Likewise.
        * config/s390/s390.c (s390_chunkify_start): Likewise.
        * config/sh/sh.c (find_barrier): Likewise.
        * config/i386/i386.c (rest_of_insert_endbranch,
        ix86_seh_fixup_eh_fallthru): Likewise.
        * config/xtensa/xtensa.c (hwloop_optimize): Likewise.
        * config/iq2000/iq2000.c (final_prescan_insn): Likewise.
        * config/frv/frv.c (frv_function_prologue): Likewise.
        * emit-rtl.c (try_split): Likewise.  Copy over REG_CALL_ARG_LOCATION
        reg note.
        (note_outside_basic_block_p): Remove all references to
        NOTE_INSN_CALL_ARG_LOCATION.
        * gengtype.c (adjust_field_rtx_def): Likewise.
        * print-rtl.c (rtx_writer::print_rtx_operand_code_0, print_insn):
        Likewise.
        * jump.c (cleanup_barriers, delete_related_insns): Likewise.
        * cfgrtl.c (force_nonfallthru_and_redirect): Likewise.

        PR c++/84444
        * builtins.c (builtin_mathfn_code): Don't check if CALL_EXPR_FN (t)
        is ADDR_EXPR.

        PR tree-optimization/84452
        * tree-vect-patterns.c (vect_recog_pow_pattern): Don't call
        expand_simd_clones if targetm.simd_clone.compute_vecsize_and_simdlen
        is NULL.

2018-02-19  Martin Liska  <mliska@suse.cz>

        PR sanitizer/82183
        * passes.def: Put pass_sancov_O0 before pass_lower_switch with -O0.

2018-02-19  Martin Liska  <mliska@suse.cz>
            Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/82491
        * gimple-fold.c (get_base_constructor): Make earlier bail out
        to prevent ubsan.

2018-02-19  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-builtin.def: Change NEG macro expansions from
        BU_ALTIVEC_A to BU_P8V_AV_1 and BU_ALTIVEC_OVERLOAD_1 to
        BU_P8V_OVERLOAD_1.
        * config/rs6000/rs6000-c.c: Change ALTIVEC_BUILTIN_VEC_NEG to
        P8V_BUILTIN_VEC_NEG.

2018-02-19  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.md (movdf): New define expand.

2018-02-19  Martin Liska  <mliska@suse.cz>

        PR other/80589
        * doc/invoke.texi: Fix typo.
        * params.def (PARAM_MAX_LOOP_HEADER_INSNS): Likewise.

2018-02-18  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (rs6000_option_override_internal): Don't
        handle rs6000_single_float and rs6000_double_float specially for
        e500 family CPUs.

2018-02-16  Jeff Law  <law@redhat.com>

        * config/rx/rx.c (add_pop_cfi_notes): New function.;
        (pop_regs): Use it.

2018-02-16  Jakub Jelinek  <jakub@redhat.com>

        PR ipa/84425
        * ipa-inline.c (inline_small_functions): Fix a typo.

2018-02-16  Nathan Sidwell  <nathan@acm.org>

        * doc/extend.texi (Backwards Compatibility): Americanize 'behaviour'.

2018-02-16  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-builtin.def: Add BU_P8V_VSX_2 macro definition.
        Change FLOAT2 expansions from BU_VSX_2 to BU_P8V_VSX_2 and
        from BU_VSX_OVERLOAD_2 to BU_P8V_OVERLOAD_2.
        * config/rs6000/rs6000-c.c: Changed macro VSX_BUILTIN_VEC_FLOAT2
        expansion to P8V_BUILTIN_VEC_FLOAT2.

2018-02-16  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/70023
        * lra-constraints.c (inherit_in_ebb): Take hard reg mode of
        src_regno into account.

2018-02-16  Carl Love  <cel@us.ibm.com>

        * config/rs6000/altivec.h: Remove vec_vextract4b and vec_vinsert4b.
        * config/rs6000/rs6000-builtin.def: Remove macro expansion for
        VEXTRACT4B, VINSERT4B, VINSERT4B_DI and VEXTRACT4B.
        * config/rs6000/rs6000.c: Remove case statements for
        P9V_BUILTIN_VEXTRACT4B, P9V_BUILTIN_VEC_VEXTRACT4B,
        P9V_BUILTIN_VINSERT4B, P9V_BUILTIN_VINSERT4B_DI,
        and P9V_BUILTIN_VEC_VINSERT4B.
        * config/rs6000/rs6000-c.c (altivec_expand_builtin): Remove entries for
        P9V_BUILTIN_VEC_VEXTRACT4B and P9V_BUILTIN_VEC_VINSERT4B.
        * config/rs6000/vsx.md:
        * doc/extend.texi: Remove vec_vextract4b, non ABI definitions for
        vec_insert4b.

2018-02-16  Carl Love  <cel@us.ibm.com>

        * config/rs6000/altivec.h: Add builtin names vec_extract4b
        vec_insert4b.
        * config/rs6000/rs6000-builtin.def: Add INSERT4B and EXTRACT4B
        definitions.
        * config/rs6000/rs6000-c.c: Add the definitions for
        P9V_BUILTIN_VEC_EXTRACT4B and P9V_BUILTIN_VEC_INSERT4B.
        * config/rs6000/rs6000.c (altivec_expand_builtin): Add
        P9V_BUILTIN_EXTRACT4B and P9V_BUILTIN_INSERT4B case statements.
        * config/rs6000/vsx.md: Add define_insn extract4b.  Add define_expand
        definition for insert4b and define insn *insert3b_internal.
        * doc/extend.texi: Add documentation for vec_extract4b.

2018-02-16  Nathan Sidwell  <nathan@acm.org>

        * doc/extend.texi (Backwards Compatibility): Mention friend
        injection.  Note for-scope is deprecated.
        * doc/invoke.texi (-ffriend-injection): Deprecate.

2018-02-16  Segher Boessenkool  <segher@kernel.crashing.org>

        * combine.c (try_combine): When adjusting LOG_LINKS for the destination
        that moved to I2, also allow destinations that are a paradoxical
        subreg (instead of a normal reg).

2018-02-16  Oleg Endo  <olegendo@gcc.gnu.org>

        PR target/83831
        * config/rx/rx.c (rx_fuse_in_memory_bitop): Convert shift operand
        to QImode.

2018-02-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84037
        PR tree-optimization/84016
        PR target/82862
        * config/i386/i386.c (ix86_builtin_vectorization_cost):
        Adjust vec_construct for the fact we need additional higher latency
        128bit inserts for AVX256 and AVX512 vector builds.
        (ix86_add_stmt_cost): Scale vector construction cost for
        elementwise loads.

2018-02-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84417
        * tree-ssa.c (non_rewritable_mem_ref_base): Properly constrain
        the MEM_REF offset when conversion to BIT_FIELD_REF is desired.
        (non_rewritable_lvalue_p): Likewise, use poly-ints.

2018-02-16  Martin Liska  <mliska@suse.cz>

        PR sanitizer/84307
        * internal-fn.def (ASAN_CHECK): Set proper flags.
        (ASAN_MARK): Likewise.

2018-02-16  Julia Koval  <julia.koval@intel.com>

        * config/i386/i386.c (ix86_option_override_internal): Remove PTA_CLWB
        from PTA_CANNONLAKE.

2018-02-16  Jakub Jelinek  <jakub@redhat.com>

        PR target/84272
        * config/aarch64/cortex-a57-fma-steering.c (fma_forest::merge_forest):
        Use ++iter rather than iter++ for std::list iterators.
        (func_fma_steering::dfs): Likewise.  Don't delete nodes right away,
        defer deleting them until all nodes in the forest are processed.  Do
        free even leaf nodes.  Change to_process into auto_vec.

        PR bootstrap/84405
        * system.h (BROKEN_VALUE_INITIALIZATION): Define for GCC < 4.3.
        * vec.h (vec_default_construct): Use memset instead of placement new
        if BROKEN_VALUE_INITIALIZATION is defined.
        * hash-table.h (hash_table<Descriptor, Allocator>::empty_slow): Use
        memset instead of value initialization if BROKEN_VALUE_INITIALIZATION
        is defined.

        PR rtl-optimization/83723
        * lra-int.h (lra_substitute_pseudo): Add DEBUG_P argument.
        * lra.c (lra_substitute_pseudo): Likewise.  If true, use
        gen_rtx_raw_SUBREG instead of gen_rtx_SUBREG.  Pass DEBUG_P to
        recursive calls.
        (lra_substitute_pseudo_within_insn): Adjust lra_substitute_pseudo
        callers.
        * lra-constraints.c (inherit_reload_reg, split_reg): Likewise.

2018-02-16  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/81443
        * rtlanal.c (num_sign_bit_copies1) <SUBREG>: Do not propagate results
        from inner REGs to paradoxical SUBREGs.

2018-02-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84399
        * graphite-scop-detection.c (scop_detection::stmt_simple_for_scop_p):
        For operands we can analyze at their definition make sure we can
        analyze them at each use as well.

2018-02-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84190
        * tree-ssa.c (non_rewritable_mem_ref_base): Do not touch
        volatile accesses if the decl isn't volatile.

2018-02-15  Jason Merrill  <jason@redhat.com>

        PR c++/84314 - ICE with templates and fastcall attribute.
        * attribs.c (build_type_attribute_qual_variant): Don't clobber
        TYPE_CANONICAL on an existing type.

2018-02-15  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84383
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Don't look at
        dstoff nor call operand_equal_p if dstbase is NULL.

        PR tree-optimization/84334
        * match.pd ((A +- CST1) +- CST2 -> A + CST3): If A is
        also a CONSTANT_CLASS_P, punt.

2018-02-14  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.c (riscv_first_stack_step): Move locals after
        first SMALL_OPERAND check.  New local min_second_step.  Move assert
        to where locals are set.  Add TARGET_RVC support.
        * config/riscv/riscv.h (C_SxSP_BITS, SWSP_REACH, SDSP_REACH): New.

2018-02-14  Indu Bhagat  <indu.bhagat@oracle.com>

        * doc/invoke.texi: Correct -Wformat-overflow code sample.

2018-02-14  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83698
        * gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): For
        arrays constrain the offset range to their bounds.
        (builtin_access::strcat_overlap): Adjust the bounds of overlap offset.
        (builtin_access::overlap): Avoid setting the size of overlap if it's
        already been set.
        (maybe_diag_overlap): Also consider arrays when deciding what values
        of offsets to include in diagnostics.

2018-02-14  Martin Sebor  <msebor@redhat.com>

        PR c/84108
        * attribs.c (diag_attr_exclusions): Consider the exclusion(s)
        that correspond to the kind of a declaration.

2018-02-14  John David Anglin  <danglin@gcc.gnu.org>

        PR target/83984
        * config/pa/pa.md: Load address of PIC label using the linkage table
        if the label is nonlocal.

2018-02-14  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000.c (rs6000_option_override_internal): Issue
        warning message if user requests -maltivec=be.
        * doc/invoke.texi: Document deprecation of -maltivec=be.

2018-02-14  Will Schmidt  <will_schmidt@vnet.ibm.com>

        PR target/84220
        * config/rs6000/rs6000-c.c: Update definitions for
        ALTIVEC_BUILTIN_VEC_SLD, ALTIVEC_BUILTIN_VEC_SLDW,
        VEC_XXSLDWI and ALTIVEC_BUILTIN_VEC_XXPERMDI builtins.

2018-02-14  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>

        PR target/84239
        * config/i386/cetintrin.h: Remove _rdssp[d|q] and
        add _get_ssp intrinsics. Remove argument from
        __builtin_ia32_rdssp[d|q].
        * config/i386/i386-builtin-types.def: Add UINT_FTYPE_VOID.
        * config/i386/i386-builtin.def: Remove argument from
        __builtin_ia32_rdssp[d|q].
        * config/i386/i386.c: Use UINT_FTYPE_VOID. Use
        ix86_expand_special_args_builtin for _rdssp[d|q].
        * config/i386/i386.md: Remove argument from rdssp[si|di] insn.
        Clear register before usage.
        * doc/extend.texi: Remove argument from __builtin_ia32_rdssp[d|q].
        Add documentation for new _get_ssp and _inc_ssp intrinsics.

2018-02-14  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84357
        * tree-data-ref.c (object_address_invariant_in_loop_p): Check
        operand 1 of an ARRAY_REF too.

2018-02-14  Oleg Endo  <olegendo@gcc.gnu.org>

        PR target/83831
        * config/rx/rx-protos.h (rx_reg_dead_or_unused_after_insn,
        rx_copy_reg_dead_or_unused_notes, rx_fuse_in_memory_bitop): New
        declarations.
        (set_of_reg): New struct.
        (rx_find_set_of_reg, rx_find_use_of_reg): New functions.
        * config/rx/rx.c (rx_reg_dead_or_unused_after_insn,
        rx_copy_reg_dead_or_unused_notes, rx_fuse_in_memory_bitop): New
        functions.
        * config/rx/rx.md (andsi3, iorsi3, xorsi3): Convert to insn_and_split.
        Split into bitclr, bitset, bitinvert patterns if appropriate.
        (*bitset, *bitinvert, *bitclr): Convert to named insn_and_split and
        use rx_fuse_in_memory_bitop.
        (*bitset_in_memory, *bitinvert_in_memory, *bitclr_in_memory): Convert
        to named insn, correct maximum insn length.

2018-02-14  Jozef Lawrynowicz  <jozefl.gcc@gmail.com>

        PR target/79242
        * machmode.def: Define a complex mode for PARTIAL_INT.
        * genmodes.c (complex_class): Return MODE_COMPLEX_INT for
        MODE_PARTIAL_INT.
        * doc/rtl.texi: Document CSPImode.
        * config/msp430/msp430.c (msp430_hard_regno_nregs): Add CPSImode
        handling.
        (msp430_hard_regno_nregs_with_padding): Likewise.

2018-02-13  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/84279
        * config/rs6000/rs6000.c (mem_operand_gpr): Disallow altivec addresses.

2018-02-13  Segher Boessenkool  <segher@kernel.crashing.org>

        PR rtl-optimization/84169
        * combine.c (try_combine): New variable split_i2i3.  Set it to true if
        we generated a parallel as new i3 and we split that to new i2 and i3
        instructions.  Handle split_i2i3 similar to swap_i2i3: scan the
        LOG_LINKs of i3 to see which of those need to link to i2 now.  Link
        those to i2, not i1.  Partially rewrite this scan code.

2018-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR c/82210
        * stor-layout.c (place_field): For variable length fields, adjust
        offset_align afterwards not just based on the field's alignment,
        but also on the size.

        PR middle-end/84309
        * match.pd (pow(C,x) -> exp(log(C)*x)): Use exp2s and log2s instead
        of exps and logs in the use_exp2 case.

2018-02-13  Jeff Law  <law@redhat.com>

        * config/rl/rl78.c (rl78_attribute_table): Fix terminator and
        entry for "vector".

        * config/rl78/rl78.c (rl78_handle_func_attribute): Mark
        ARGS as unused.

2018-02-13  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/84342
        PR debug/84319
        * common.opt (gas-loc-support, gas-locview-support): New.
        (ginline-points, ginternal-reset-location-views): New.
        * doc/invoke.texi: Document them.  Use @itemx where intended.
        (gvariable-location-views): Adjust.
        * target.def (reset_location_view): New.
        * doc/tm.texi.in (DWARF2_ASM_VIEW_DEBUG_INFO): New.
        (TARGET_RESET_LOCATION_VIEW): New.
        * doc/tm.texi: Rebuilt.
        * dwarf2out.c (dwarf2out_default_as_loc_support): New.
        (dwarf2out_default_as_locview_support): New.
        (output_asm_line_debug_info): Use option variables.
        (dwarf2out_maybe_output_loclist_view_pair): Likewise.
        (output_loc_list): Likewise.
        (add_high_low_attributes): Check option variables.
        Don't output entry view attribute in strict mode.
        (gen_inlined_subroutine_die): Check option variables.
        (dwarf2out_inline_entry): Likewise.
        (init_sections_and_labels): Likewise.
        (dwarf2out_early_finish): Likewise.
        (maybe_reset_location_view): New, from...
        (dwarf2out_var_location): ... here.  Call it.
        * debug.h (dwarf2out_default_as_loc_support): Declare.
        (dwarf2out_default_as_locview_support): Declare.
        * hooks.c (hook_int_rtx_insn_0): New.
        * hooks.h (hook_int_rtx_insn_0): Declare.
        * toplev.c (process_options): Take -gas-loc-support and
        -gas-locview-support from dwarf2out.  Enable
        -gvariable-location-views by default only with locview
        assembler support.  Enable -ginternal-reset-location-views by
        default only if the target defines the corresponding hook.
        Enable -ginline-points by default if location views are
        enabled; force it disabled if statement frontiers are
        disabled.
        * tree-inline.c (expand_call_inline): Check option variables.
        * tree-ssa-live.c (remove_unused_scope_block_p): Likewise.

2018-02-13  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84321
        * tree-vrp.c (intersect_range_with_nonzero_bits): Fix VR_ANTI_RANGE
        handling.  Also check whether the anti-range contains any values
        that satisfy the mask; switch to a VR_RANGE if not.

2018-02-13  Paolo Bonzini  <bonzini@gnu.org>

        PR sanitizer/84340
        * internal-fn.def (ASAN_CHECK, ASAN_MARK): Revert changes to fnspec.

2018-02-13  Martin Jambor  <mjambor@suse.cz>

        PR c++/83990
        * ipa-param-manipulation.c (ipa_modify_call_arguments): Use location
        of call statements, also set location of a load to a temporary.

2018-02-13  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.c (add_vector_labels): New function.
        * config/rl78/rl78.c (rl78_handle_vector_attribute): New function.
        * config/rl78/rl78.c (rl78_start_function): Call add_vector_labels.
        * config/rl78/rl78.c (rl78_handle_func_attribute): Removed the assert 
        which checks that no arguments are passed.
        * config/rl78/rl78.c (rl78_attribute_table): Add "vector" attribute.
        * doc/extend.texi: Documentation for the new attribute.

2018-02-13  Andreas Schwab  <schwab@suse.de>

        * config/riscv/linux.h (CPP_SPEC): Define.

2018-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/84335
        * config/i386/i386.c (ix86_init_mmx_sse_builtins): Pass
        OPTION_MASK_ISA_AES | OPTION_MASK_ISA_SSE2 instead of
        OPTION_MASK_ISA_AES as first argument to def_builtin_const
        for AES builtins.  Pass OPTION_MASK_ISA_PCLMUL | OPTION_MASK_ISA_SSE2
        instead of OPTION_MASK_ISA_PCLMUL as first argument to
        def_builtin_const for __builtin_ia32_pclmulqdq128 builtin.
        * config/i386/wmmintrin.h: If __SSE2__ is not defined, enable it
        temporarily for AES and PCLMUL builtins.

        PR tree-optimization/84339
        * gimple-fold.c (get_range_strlen): Set *FLEXP to true when handling
        ARRAY_REF where first operand is array_at_struct_end_p COMPONENT_REF.
        Formatting fixes.

        PR middle-end/84309
        * match.pd (pow(C,x) -> exp(log(C)*x)): Optimize instead into
        exp2(log2(C)*x) if C is a power of 2 and c99 runtime is available.
        * generic-match-head.c (canonicalize_math_after_vectorization_p): New
        inline function.
        * gimple-match-head.c (canonicalize_math_after_vectorization_p): New
        inline function.
        * omp-simd-clone.h: New file.
        * omp-simd-clone.c: Include omp-simd-clone.h.
        (expand_simd_clones): No longer static.
        * tree-vect-patterns.c: Include fold-const-call.h, attribs.h,
        cgraph.h and omp-simd-clone.h.
        (vect_recog_pow_pattern): Optimize pow(C,x) to exp(log(C)*x).
        (vect_recog_widen_shift_pattern): Formatting fix.
        (vect_pattern_recog_1): Don't check optab for calls.

        PR target/84336
        * config/i386/sse.md (<avx512>_vpermi2var<mode>3_mask): Force
        operands[2] into a REG before using gen_lowpart on it.

2018-02-12  Jeff Law  <law@redhat.com>

        PR target/83760
        * config/sh/sh.c (find_barrier): Consider a sibling call
        a barrier as well.

        * cse.c (try_back_substitute_reg): Move any REG_ARGS_SIZE note when
        successfully back substituting a reg.

2018-02-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84037
        * tree-vect-slp.c (vect_analyze_slp_cost): Add visited
        parameter, move visited init to caller.
        (vect_slp_analyze_operations): Separate cost from validity
        check, initialize visited once for all instances.
        (vect_schedule_slp): Analyze map to CSE vectorized nodes once
        for all instances.
        * tree-vect-stmts.c (vect_model_simple_cost): Make early
        out an assert.
        (vect_model_promotion_demotion_cost): Likewise.
        (vectorizable_bswap): Guard cost modeling with !slp_node
        instead of !PURE_SLP_STMT to avoid double-counting on hybrid
        SLP stmts.
        (vectorizable_call): Likewise.
        (vectorizable_conversion): Likewise.
        (vectorizable_assignment): Likewise.
        (vectorizable_shift): Likewise.
        (vectorizable_operation): Likewise.
        (vectorizable_store): Likewise.
        (vectorizable_load): Likewise.
        (vectorizable_condition): Likewise.
        (vectorizable_comparison): Likewise.

2018-02-12  Paolo Bonzini  <bonzini@gnu.org>

        PR sanitizer/84307
        * internal-fn.def (ASAN_CHECK): Fix fnspec to account for return value.
        (ASAN_MARK): Fix fnspec to account for return value, change pointer
        argument from 'R' to 'W' so that the pointed-to datum is clobbered.

2018-02-08  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83665
        * params.def (inline-min-speedup): Increase from 8 to 15.
        (max-inline-insns-auto): Decrease from 40 to 30.
        * ipa-split.c (consider_split): Add some buffer for function to
        be considered inlining candidate.
        * invoke.texi (max-inline-insns-auto, inline-min-speedup): UPdate
        default values.

2018-02-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84037
        * tree-vect-slp.c (vect_build_slp_tree_2): Try swapping the
        matched stmts if we cannot swap the non-matched ones.

2018-02-12  Olga Makhotina  <olga.makhotina@intel.com>

        * config/i386/avx512fintrin.h (_mm_mask_scalef_round_sd,
        _mm_maskz_scalef_round_sd, _mm_mask_scalef_round_ss,
        _mm_maskz_scalef_round_ss): New intrinsics.
        (__builtin_ia32_scalefsd_round, __builtin_ia32_scalefss_round): Fix.
        * config/i386/i386-builtin.def (__builtin_ia32_scalefsd_round,
        __builtin_ia32_scalefss_round): Remove.
        (__builtin_ia32_scalefsd_mask_round,
        __builtin_ia32_scalefss_mask_round): New intrinsics.
        * config/i386/sse.md (vmscalef<mode><round_name>): Renamed to ...
        (vmscalef<mode><mask_scalar_name><round_scalar_name>): ... this.
        ((match_operand:VF_128 2 "<round_nimm_predicate>"
        "<round_constraint>")): Changed to ...
        ((match_operand:VF_128 2 "<round_scalar_nimm_predicate>"
        "<round_scalar_constraint>")): ... this.
        ("vscalef<ssescalarmodesuffix>\t{<round_op3>%2, %1, %0|
        %0, %1, %2<round_op3>}"): Changed to ...
        ("vscalef<ssescalarmodesuffix>\t{<round_scalar_mask_op3>%2, %1,
        %0<mask_scalar_operand3>|%0<mask_scalar_operand3>, %1,
        %2<round_scalar_mask_op3>}"): ... this.
        * config/i386/subst.md (round_scalar_nimm_predicate): New.

2018-02-12  Olga Makhotina  <olga.makhotina@intel.com>

        * config/i386/avx512fintrin.h (_mm_mask_sqrt_round_sd)
        (_mm_maskz_sqrt_round_sd, _mm_mask_sqrt_round_ss)
        (_mm_maskz_sqrt_round_ss): New intrinsics.
        (__builtin_ia32_sqrtsd_round, __builtin_ia32_sqrtss_round): Remove.
        (__builtin_ia32_sqrtsd_mask_round)
        (__builtin_ia32_sqrtss_mask_round): New builtins.
        * config/i386/i386-builtin.def (__builtin_ia32_sqrtsd_round)
        (__builtin_ia32_sqrtss_round): Remove.
        (__builtin_ia32_sqrtsd_mask_round)
        (__builtin_ia32_sqrtss_mask_round): New builtins.
        * config/i386/sse.md (vmsqrt<mode>2<round_name>): Renamed to ...
        (vmsqrt<mode>2<mask_scalar_name><round_scalar_name>): ... this.
        ((match_operand:VF_128 1 "vector_operand"
        "xBm,<round_constraint>")): Changed to ...
        ((match_operand:VF_128 1 "vector_operand"
        "xBm,<round_scalar_constraint>")): ... this.
        (vsqrt<ssescalarmodesuffix>\t{<round_op3>%1, %2, %0|
        %0, %2, %<iptr>1<round_op3>}): Changed to ...
        (vsqrt<ssescalarmodesuffix>\t{<round_scalar_mask_op3>%1, %2,
        %0<mask_scalar_operand3>|%0<mask_scalar_operand3>, %2,
        %<iptr>1<round_scalar_mask_op3>}): ... this.
        ((set_attr "prefix" "<round_prefix>")): Changed to ...
        ((set_attr "prefix" "<round_scalar_prefix>")): ... this.

2018-02-11  Steven Munroe  <munroesj@gcc.gnu.org>

        PR target/84266
        * config/rs6000/mmintrin.h (_mm_cmpeq_pi32 [_ARCH_PWR9]):
        Cast vec_cmpeq result to correct type.
        * config/rs6000/mmintrin.h (_mm_cmpgt_pi32 [_ARCH_PWR9]):
        Cast vec_cmpgt result to correct type.

2018-02-11  Alexandre Oliva  <aoliva@redhat.com>

        * final.c (final_scan_insn_1): Renamed from...
        (final_scan_insn): ... this.  New wrapper, to recover
        seen from the outermost call in recursive ones.
        * config/sparc/sparc.c (output_return): Drop seen from call.
        (output_sibcall): Likewise.
        * config/visium/visium.c (output_branch): Likewise.

2018-02-10  John David Anglin  <danglin@gcc.gnu.org>

        * config/pa/pa.c (hppa_profile_hook): Mark SYMBOL_REF for _mcount as
        function label.

2018-02-10  Alan Modra  <amodra@gmail.com>

        PR target/84300
        * config/rs6000/rs6000.md (split_stack_return): Remove (use ..).
        Specify LR as an input.

2018-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/83987
        * omp-low.c (maybe_remove_omp_member_access_dummy_vars,
        remove_member_access_dummy_vars): New functions.
        (lower_omp_for, lower_omp_taskreg, lower_omp_target,
        lower_omp_1, execute_lower_omp): Use them.

        PR rtl-optimization/84308
        * shrink-wrap.c (spread_components): Release todo vector.

2018-02-09  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/57193
        * ira-color.c (struct allocno_color_data): Add member
        conflict_allocno_hard_prefs.
        (update_conflict_allocno_hard_prefs): New.
        (bucket_allocno_compare_func): Add a preference based on
        conflict_allocno_hard_prefs.
        (push_allocno_to_stack): Update conflict_allocno_hard_prefs.
        (color_allocnos): Remove a dead code.  Initiate
        conflict_allocno_hard_prefs.  Call update_costs_from_prefs.

2018-02-09  Jakub Jelinek  <jakub@redhat.com>

        PR target/84226
        * config/rs6000/vsx.md (p9_xxbrq_v16qi): Change input operand
        constraint from =wa to wa.  Avoid a subreg on the output operand,
        instead use a pseudo and subreg it in a move.
        (p9_xxbrd_<mode>): Changed to ...
        (p9_xxbrd_v2di): ... this insn, without VSX_D iterator.
        (p9_xxbrd_v2df): New expander.
        (p9_xxbrw_<mode>): Changed to ...
        (p9_xxbrw_v4si): ... this insn, without VSX_W iterator.
        (p9_xxbrw_v4sf): New expander.

2018-02-09  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rx/rx.md (movsicc): Update expander to be matched by GCC.

2018-02-09  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/83926
        * config/rs6000/vsx.md (vsx_mul_v2di): Handle generating a 64-bit
        multiply in 32-bit mode.
        (vsx_div_v2di): Handle generating a 64-bit signed divide in 32-bit mode.
        (vsx_udiv_v2di): Handle generating a 64-bit unsigned divide in 32-bit
        mode.

2018-02-09  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rx/constraints.md (CALL_OP_SYMBOL_REF): Added new constraint
        to allow or block "symbol_ref" depending on the value of TARGET_JSR.
        * config/rx/rx.md (call_internal): Use CALL_OP_SYMBOL_REF.
        * config/rx/rx.md (call_value_internal): Use CALL_OP_SYMBOL_REF.

2018-02-09  Pierre-Marie de Rodat  <derodat@adacore.com>

        PR lto/84213
        * dwarf2out.c (is_trivial_indirect_ref): New function.
        (dwarf2out_late_global_decl): Do not generate a location
        attribute for variables that have a non-trivial DECL_VALUE_EXPR
        and that are not defined in the current unit.

2018-02-09  Eric Botcazou  <ebotcazou@adacore.com>

        * optabs.c (prepare_cmp_insn): Try harder to emit a direct comparison
        instead of a libcall for UNORDERED.

2018-02-09  Tamar Christina  <tamar.christina@arm.com>

        PR target/82641
        * config/arm/arm-c.c (arm_cpu_builtins): Un-define __ARM_FEATURE_LDREX,
        __ARM_ARCH_PROFILE, __ARM_ARCH_ISA_THUMB, __ARM_FP and __ARM_NEON_FP.

2018-02-09  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        PR target/PR84295
        * config/s390/s390.c (s390_set_current_function): Invoke
        s390_indirect_branch_settings also if fndecl didn't change.

2018-02-09  Alexandre Oliva  <aoliva@redhat.com>

        * config/rs6000/rs6000.md (blockage): Set length to zero.

2018-02-09  Eric Botcazou  <ebotcazou@adacore.com>

        * expr.c (optimize_bitfield_assignment_op): Remove obsolete assertion.

2018-02-09  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/84285
        * gcc.c (STATIC_LIBASAN_LIBS, STATIC_LIBTSAN_LIBS,
        STATIC_LIBLSAN_LIBS, STATIC_LIBUBSAN_LIBS): Handle -static like
        -static-lib*san.

        PR debug/84252
        * var-tracking.c (vt_add_function_parameter): Punt for non-onepart
        PARALLEL incoming that failed vt_get_decl_and_offset check.

        PR middle-end/84237
        * output.h (bss_initializer_p): Add NAMED argument, defaulted to false.
        * varasm.c (bss_initializer_p): Add NAMED argument, if true, ignore
        TREE_READONLY bit.
        (get_variable_section): For decls in named .bss* sections pass true as
        second argument to bss_initializer_p.

2018-02-09  Marek Polacek  <polacek@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/83659
        * fold-const.c (fold_indirect_ref_1): Use VECTOR_TYPE_P macro.
        Formatting fixes.  Verify first that tree_fits_poly_int64_p (op01).
        Sync some changes from cxx_fold_indirect_ref.

2018-02-09  Alexandre Oliva  <aoliva@redhat.com>

        * cfgexpand.c (expand_gimple_basic_block): Handle inline entry
        markers.
        * dwarf2out.c (dwarf2_debug_hooks): Enable inline_entry hook.
        (BLOCK_INLINE_ENTRY_LABEL): New.
        (dwarf2out_var_location): Disregard inline entry markers.
        (inline_entry_data): New struct.
        (inline_entry_data_hasher): New hashtable type.
        (inline_entry_data_hasher::hash): New.
        (inline_entry_data_hasher::equal): New.
        (inline_entry_data_table): New variable.
        (add_high_low_attributes): Add DW_AT_entry_pc and
        DW_AT_GNU_entry_view attributes if a pending entry is found
        in inline_entry_data_table.  Add old entry_pc attribute only
        if debug nonbinding markers are disabled.
        (gen_inlined_subroutine_die): Set BLOCK_DIE if nonbinding
        markers are enabled.
        (block_within_block_p, dwarf2out_inline_entry): New.
        (dwarf2out_finish): Check that no entries remained in
        inline_entry_data_table.
        * final.c (reemit_insn_block_notes): Handle inline entry notes.
        (final_scan_insn, notice_source_line): Likewise.
        (rest_of_clean_state): Skip inline entry markers.
        * gimple-pretty-print.c (dump_gimple_debug): Handle inline entry
        markers.
        * gimple.c (gimple_build_debug_inline_entry): New.
        * gimple.h (enum gimple_debug_subcode): Add
        GIMPLE_DEBUG_INLINE_ENTRY.
        (gimple_build_debug_inline_entry): Declare.
        (gimple_debug_inline_entry_p): New.
        (gimple_debug_nonbind_marker_p): Adjust.
        * insn-notes.def (INLINE_ENTRY): New.
        * print-rtl.c (rtx_writer::print_rtx_operand_code_0): Handle
        inline entry marker notes.
        (print_insn): Likewise.
        * rtl.h (NOTE_MARKER_P): Add INLINE_ENTRY support.
        (INSN_DEBUG_MARKER_KIND): Likewise.
        (GEN_RTX_DEBUG_MARKER_INLINE_ENTRY_PAT): New.
        * tree-inline.c (expand_call_inline): Build and insert
        debug_inline_entry stmt.
        * tree-ssa-live.c (remove_unused_scope_block_p): Preserve
        inline entry blocks early, if nonbind markers are enabled.
        (dump_scope_block): Dump fragment info.
        * var-tracking.c (reemit_marker_as_note): Handle inline entry note.
        * doc/gimple.texi (gimple_debug_inline_entry_p): New.
        (gimple_build_debug_inline_entry): New.
        * doc/invoke.texi (gstatement-frontiers, gno-statement-frontiers):
        Enable/disable inline entry points too.
        * doc/rtl.texi (NOTE_INSN_INLINE_ENTRY): New.
        (DEBUG_INSN): Describe inline entry markers.

        * common.opt (gvariable-location-views): New.
        (gvariable-location-views=incompat5): New.
        * config.in: Rebuilt.
        * configure: Rebuilt.
        * configure.ac: Test assembler for view support.
        * dwarf2asm.c (dw2_asm_output_symname_uleb128): New.
        * dwarf2asm.h (dw2_asm_output_symname_uleb128): Declare.
        * dwarf2out.c (var_loc_view): New typedef.
        (struct dw_loc_list_struct): Add vl_symbol, vbegin, vend.
        (dwarf2out_locviews_in_attribute): New.
        (dwarf2out_locviews_in_loclist): New.
        (dw_val_equal_p): Compare val_view_list of dw_val_class_view_lists.
        (enum dw_line_info_opcode): Add LI_adv_address.
        (struct dw_line_info_table): Add view.
        (RESET_NEXT_VIEW, RESETTING_VIEW_P): New macros.
        (DWARF2_ASM_VIEW_DEBUG_INFO): Define default.
        (zero_view_p): New variable.
        (ZERO_VIEW_P): New macro.
        (output_asm_line_debug_info): New.
        (struct var_loc_node): Add view.
        (add_AT_view_list, AT_loc_list): New.
        (add_var_loc_to_decl): Add view param.  Test it against last.
        (new_loc_list): Add view params.  Record them.
        (AT_loc_list_ptr): Handle loc and view lists.
        (view_list_to_loc_list_val_node): New.
        (print_dw_val): Handle dw_val_class_view_list.
        (size_of_die): Likewise.
        (value_format): Likewise.
        (loc_list_has_views): New.
        (gen_llsym): Set vl_symbol too.
        (maybe_gen_llsym, skip_loc_list_entry): New.
        (dwarf2out_maybe_output_loclist_view_pair): New.
        (output_loc_list): Output view list or entries too.
        (output_view_list_offset): New.
        (output_die): Handle dw_val_class_view_list.
        (output_dwarf_version): New.
        (output_compilation_unit_header): Use it.
        (output_skeleton_debug_sections): Likewise.
        (output_rnglists, output_line_info): Likewise.
        (output_pubnames, output_aranges): Update version comments.
        (output_one_line_info_table): Output view numbers in asm comments.
        (dw_loc_list): Determine current endview, pass it to new_loc_list.
        Call maybe_gen_llsym.
        (loc_list_from_tree_1): Adjust.
        (add_AT_location_description): Create view list attribute if
        needed, check it's absent otherwise.
        (convert_cfa_to_fb_loc_list): Adjust.
        (maybe_emit_file): Call output_asm_line_debug_info for test.
        (dwarf2out_var_location): Reset views as needed.  Precompute
        add_var_loc_to_decl args.  Call get_attr_min_length only if we have the
        attribute.  Set view.
        (new_line_info_table): Reset next view.
        (set_cur_line_info_table): Call output_asm_line_debug_info for test.
        (dwarf2out_source_line): Likewise.  Output view resets and labels to
        the assembler, or select appropriate line info opcodes.
        (prune_unused_types_walk_attribs): Handle dw_val_class_view_list.
        (optimize_string_length): Catch it.  Adjust.
        (resolve_addr): Copy vl_symbol along with ll_symbol.  Handle
        dw_val_class_view_list, and remove it if no longer needed.
        (hash_loc_list): Hash view numbers.
        (loc_list_hasher::equal): Compare them.
        (optimize_location_lists): Check whether a view list symbol is
        needed, and whether the locview attribute is present, and
        whether they match.  Remove the locview attribute if no longer
        needed.
        (index_location_lists): Call skip_loc_list_entry for test.
        (dwarf2out_finish): Call output_asm_line_debug_info for test.
        Use output_dwarf_version.
        * dwarf2out.h (enum dw_val_class): Add dw_val_class_view_list.
        (struct dw_val_node): Add val_view_list.
        * final.c (SEEN_NEXT_VIEW): New.
        (set_next_view_needed): New.
        (clear_next_view_needed): New.
        (maybe_output_next_view): New.
        (final_start_function): Rename to...
        (final_start_function_1): ... this.  Take pointer to FIRST,
        add SEEN parameter.  Emit param bindings in the initial view.
        (final_start_function): Reintroduce SEEN-less interface.
        (final): Rename to...
        (final_1): ... this.  Take SEEN parameter.  Output final pending
        next view at the end.
        (final): Reintroduce seen-less interface.
        (final_scan_insn): Output pending next view before switching
        sections or ending a block.  Mark the next view as needed when
        outputting variable locations.  Notify debug backend of section
        changes, and of location view changes.
        (rest_of_handle_final): Adjust.
        * toplev.c (process_options): Autodetect value for debug variable
        location views option.  Warn on incompat5 without -gdwarf-5.
        * doc/invoke.texi (gvariable-location-views): New.
        (gvariable-location-views=incompat5): New.
        (gno-variable-location-views): New.

2018-02-08  David Malcolm  <dmalcolm@redhat.com>

        PR tree-optimization/84136
        * tree-cfg.c (find_taken_edge_computed_goto): Remove assertion
        that the result of find_edge is non-NULL.

2018-02-08  Sergey Shalnov  <sergey.shalnov@intel.com>

        PR target/83008
        * config/i386/x86-tune-costs.h (skylake_cost): Fix cost of
        storing integer register in SImode.  Fix cost of 256 and 512
        byte aligned SSE register store.

2018-02-08  Sergey Shalnov  <sergey.shalnov@intel.com>

        * config/i386/i386.c (ix86_multiplication_cost): Fix
        multiplication cost for TARGET_AVX512DQ.

2018-02-08  Marek Polacek  <polacek@redhat.com>

        PR tree-optimization/84238
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Verify the result of
        get_range_strlen.

2018-02-08  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/84265
        * tree-vect-stmts.c (vectorizable_store): Don't treat
        VMAT_CONTIGUOUS accesses as grouped.
        (vectorizable_load): Likewise.

2018-02-08  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/81635
        * wide-int.h (wi::round_down_for_mask, wi::round_up_for_mask): Declare.
        * wide-int.cc (wi::round_down_for_mask, wi::round_up_for_mask)
        (test_round_for_mask): New functions.
        (wide_int_cc_tests): Call test_round_for_mask.
        * tree-vrp.h (intersect_range_with_nonzero_bits): Declare.
        * tree-vrp.c (intersect_range_with_nonzero_bits): New function.
        * tree-data-ref.c (split_constant_offset_1): Use it to refine the
        range returned by get_range_info.

2018-02-08  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/81360
        * cgraph.h (symtab_node::output_to_lto_symbol_table_p): Declare
        * symtab.c: Include builtins.h
        (symtab_node::output_to_lto_symbol_table_p): Move here
        from lto-streamer-out.c:output_symbol_p.
        * lto-streamer-out.c (write_symbol): Turn early exit to assert.
        (output_symbol_p): Move all logic to symtab.c
        (produce_symtab): Update.

2018-02-08  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        * config/s390/s390-opts.h (enum indirect_branch): Define.
        * config/s390/s390-protos.h (s390_return_addr_from_memory)
        (s390_indirect_branch_via_thunk)
        (s390_indirect_branch_via_inline_thunk): Add function prototypes.
        (enum s390_indirect_branch_type): Define.
        * config/s390/s390.c (struct s390_frame_layout, struct
        machine_function): Remove.
        (indirect_branch_prez10thunk_mask, indirect_branch_z10thunk_mask)
        (indirect_branch_table_label_no, indirect_branch_table_name):
        Define variables.
        (INDIRECT_BRANCH_NUM_OPTIONS): Define macro.
        (enum s390_indirect_branch_option): Define.
        (s390_return_addr_from_memory): New function.
        (s390_handle_string_attribute): New function.
        (s390_attribute_table): Add new attribute handler.
        (s390_execute_label): Handle UNSPEC_EXECUTE_JUMP patterns.
        (s390_indirect_branch_via_thunk): New function.
        (s390_indirect_branch_via_inline_thunk): New function.
        (s390_function_ok_for_sibcall): When jumping via thunk disallow
        sibling call optimization for non z10 compiles.
        (s390_emit_call): Force indirect branch target to be a single
        register.  Add r1 clobber for non-z10 compiles.
        (s390_emit_epilogue): Emit return jump via return_use expander.
        (s390_reorg): Handle JUMP_INSNs as execute targets.
        (s390_option_override_internal): Perform validity checks for the
        new command line options.
        (s390_indirect_branch_attrvalue): New function.
        (s390_indirect_branch_settings): New function.
        (s390_set_current_function): Invoke s390_indirect_branch_settings.
        (s390_output_indirect_thunk_function):  New function.
        (s390_code_end): Implement target hook.
        (s390_case_values_threshold): Implement target hook.
        (TARGET_ASM_CODE_END, TARGET_CASE_VALUES_THRESHOLD): Define target
        macros.
        * config/s390/s390.h (struct s390_frame_layout)
        (struct machine_function): Move here from s390.c.
        (TARGET_INDIRECT_BRANCH_NOBP_RET)
        (TARGET_INDIRECT_BRANCH_NOBP_JUMP)
        (TARGET_INDIRECT_BRANCH_NOBP_JUMP_THUNK)
        (TARGET_INDIRECT_BRANCH_NOBP_JUMP_INLINE_THUNK)
        (TARGET_INDIRECT_BRANCH_NOBP_CALL)
        (TARGET_DEFAULT_INDIRECT_BRANCH_TABLE)
        (TARGET_INDIRECT_BRANCH_THUNK_NAME_EXRL)
        (TARGET_INDIRECT_BRANCH_THUNK_NAME_EX)
        (TARGET_INDIRECT_BRANCH_TABLE): Define macros.
        * config/s390/s390.md (UNSPEC_EXECUTE_JUMP)
        (INDIRECT_BRANCH_THUNK_REGNUM): Define constants.
        (mnemonic attribute): Add values which aren't recognized
        automatically.
        ("*cjump_long", "*icjump_long", "*basr", "*basr_r"): Disable
        pattern for branch conversion.  Fix mnemonic attribute.
        ("*c<code>", "*sibcall_br", "*sibcall_value_br", "*return"): Emit
        indirect branch via thunk if requested.
        ("indirect_jump", "<code>"): Expand patterns for branch conversion.
        ("*indirect_jump"): Disable for branch conversion using out of
        line thunks.
        ("indirect_jump_via_thunk<mode>_z10")
        ("indirect_jump_via_thunk<mode>")
        ("indirect_jump_via_inlinethunk<mode>_z10")
        ("indirect_jump_via_inlinethunk<mode>", "*casesi_jump")
        ("casesi_jump_via_thunk<mode>_z10", "casesi_jump_via_thunk<mode>")
        ("casesi_jump_via_inlinethunk<mode>_z10")
        ("casesi_jump_via_inlinethunk<mode>", "*basr_via_thunk<mode>_z10")
        ("*basr_via_thunk<mode>", "*basr_r_via_thunk_z10")
        ("*basr_r_via_thunk", "return<mode>_prez10"): New pattern.
        ("*indirect2_jump"): Disable for branch conversion.
        ("casesi_jump"): Turn into expander and expand patterns for branch
        conversion.
        ("return_use"): New expander.
        ("*return"): Emit return via thunk and rename it to ...
        ("*return<mode>"): ... this one.
        * config/s390/s390.opt: Add new options and and enum for the
        option values.

2018-02-08  Richard Sandiford  <richard.sandiford@linaro.org>

        * lra-constraints.c (match_reload): Unconditionally use
        gen_lowpart_SUBREG, rather than selecting between that
        and equivalent gen_rtx_SUBREG code.

2018-02-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84233
        * tree-ssa-phiprop.c (propagate_with_phi): Use separate
        changed flag instead of boguously re-using phi_inserted.

2018-02-08  Martin Jambor  <mjambor@suse.cz>

        * hsa-gen.c (get_symbol_for_decl): Set program allocation for
        static local variables.

2018-02-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84278
        * tree-vect-stmts.c (vectorizable_store): When looking for
        smaller vector types to perform grouped strided loads/stores
        make sure the mode is supported by the target.
        (vectorizable_load): Likewise.

2018-02-08  Wilco Dijkstra  <wdijkstr@arm.com>

        * config/aarch64/aarch64.c (aarch64_components_for_bb):
        Increase LDP/STP opportunities by adding adjacent callee-saves.

2018-02-08  Wilco Dijkstra  <wdijkstr@arm.com>

        PR rtl-optimization/84068
        PR rtl-optimization/83459
        * haifa-sched.c (rank_for_schedule): Fix SCHED_PRESSURE_MODEL sorting.

2018-02-08  Aldy Hernandez  <aldyh@redhat.com>

        PR tree-optimization/84224
        * gimple-ssa-warn-alloca.c (pass_walloca::execute): Remove assert.
        * calls.c (gimple_alloca_call_p): Only return TRUE when we have
        non-zero arguments.

2018-02-07  Iain Sandoe  <iain@codesourcery.com>

        PR target/84113
        * config/rs6000/altivec.md (*restore_world): Remove LR use.
        * config/rs6000/predicates.md (restore_world_operation): Adjust op
        count, remove one USE.

2018-02-07  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * doc/install.texi (Configuration): Document the
        --with-long-double-format={ibm,ieee} PowerPC configuration
        options.

        PR target/84154
        * config/rs6000/rs6000.md (fix_trunc<SFDF:mode><QHI:mode>2):
        Convert from define_expand to be define_insn_and_split.  Rework
        float/double/_Float128 conversions to QI/HI/SImode to work with
        both ISA 2.07 (power8) or ISA 3.0 (power9).  Fix regression where
        conversions to QI/HImode types did a store and then a load to
        truncate the value.  For conversions to VSX registers, don't split
        the insn, instead emit the code directly.  Use the code iterator
        any_fix to combine signed and unsigned conversions.
        (fix<uns>_trunc<SFDF:mode>si2_p8): Likewise.
        (fixuns_trunc<SFDF:mode><QHI:mode>2): Likewise.
        (fix_trunc<IEEE128:mode><QHI:mode>2): Likewise.
        (fix<uns>_trunc<SFDF:mode><QHI:mode>2): Likewise.
        (fix_<mode>di2_hw): Likewise.
        (fixuns_<mode>di2_hw): Likewise.
        (fix_<mode>si2_hw): Likewise.
        (fixuns_<mode>si2_hw): Likewise.
        (fix<uns>_<IEEE128:mode><SDI:mode>2_hw): Likewise.
        (fix<uns>_trunc<IEEE128:mode><QHI:mode>2): Likewise.
        (fctiw<u>z_<mode>_smallint): Rename fctiw<u>z_<mode>_smallint to
        fix<uns>_trunc<SFDF:mode>si2_p8.
        (fix_trunc<SFDF:mode><QHI:mode>2_internal): Delete, no longer
        used.
        (fixuns_trunc<SFDF:mode><QHI:mode>2_internal): Likewise.
        (fix<uns>_<mode>_mem): Likewise.
        (fctiw<u>z_<mode>_mem): Likewise.
        (fix<uns>_<mode>_mem): Likewise.
        (fix<uns>_trunc<SFDF:mode><QHSI:mode>2_mem): On ISA 3.0, prevent
        the register allocator from doing a direct move to the GPRs to do
        a store, and instead use the ISA 3.0 store byte/half-word from
        vector register instruction.  For IEEE 128-bit floating point,
        also optimize stores of 32-bit ints.
        (fix<uns>_trunc<IEEE128:mode><QHSI:mode>2_mem): Likewise.

2018-02-07  Alan Hayward  <alan.hayward@arm.com>

        * genextract.c (push_pathstr_operand): New function to support
        [a-zA-Z].
        (walk_rtx): Call push_pathstr_operand.
        (print_path): Support [a-zA-Z].

2018-02-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84037
        * tree-vectorizer.h (struct _loop_vec_info): Add ivexpr_map member.
        (cse_and_gimplify_to_preheader): Declare.
        (vect_get_place_in_interleaving_chain): Likewise.
        * tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Initialize
        ivexpr_map.
        (_loop_vec_info::~_loop_vec_info): Delete it.
        (cse_and_gimplify_to_preheader): New function.
        * tree-vect-slp.c (vect_get_place_in_interleaving_chain): Export.
        * tree-vect-stmts.c (vectorizable_store): CSE base and steps.
        (vectorizable_load): Likewise.  For grouped stores always base
        the IV on the first element.
        * tree-vect-loop-manip.c (vect_loop_versioning): Unshare versioning
        condition before gimplifying.

2018-02-07  Jakub Jelinek  <jakub@redhat.com>

        * tree-eh.c (operation_could_trap_helper_p): Ignore honor_trapv for
        *DIV_EXPR and *MOD_EXPR.

2018-02-07  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/84248
        * config/i386/i386.c (ix86_option_override_internal): Mask out
        the CF_SET bit when checking -fcf-protection.

2018-02-07  Tom de Vries  <tom@codesourcery.com>

        PR libgomp/84217
        * omp-expand.c (expand_oacc_collapse_init): Ensure diff_type is large
        enough.

2018-02-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84204
        * tree-chrec.c (chrec_fold_plus_1): Remove size limiting in
        this place.

        PR tree-optimization/84205
        * graphite-isl-ast-to-gimple.c (binary_op_to_tree): Also
        special-case isl_ast_op_zdiv_r.

        PR tree-optimization/84223
        * graphite-scop-detection.c (gather_bbs::before_dom_children):
        Only add conditions from within the region.
        (gather_bbs::after_dom_children): Adjust.

2018-02-07  Georg-Johann Lay  <avr@gjlay.de>

        PR target/84209
        * config/avr/avr.h (GENERAL_REGNO_P, GENERAL_REG_P): New macros.
        * config/avr/avr.md: Only post-reload split REG-REG moves if
        either register is GENERAL_REG_P.

2018-02-07  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84235
        * tree-ssa-scopedtables.c
        (avail_exprs_stack::simplify_binary_operation): Fir MINUS_EXPR, punt
        if the subtraction is performed in floating point type where NaNs are
        honored.  For *DIV_EXPR, punt for ALL_FRACT_MODE_Ps where we can't
        build 1.  Formatting fix.

2018-02-06  Jakub Jelinek  <jakub@redhat.com>

        PR target/84146
        * config/i386/i386.c (rest_of_insert_endbranch): Only skip
        NOTE_INSN_CALL_ARG_LOCATION after a call, not anything else,
        and skip it regardless of bb boundaries.  Use CALL_P macro,
        don't test INSN_P (insn) together with CALL_P or JUMP_P check
        unnecessarily, formatting fix.

2018-02-06  Michael Collison  <michael.collison@arm.com>

        * config/arm/thumb2.md:
        (*thumb2_mov_negscc): Split only if TARGET_THUMB2 && !arm_restrict_it.
        (*thumb_mov_notscc): Ditto.

2018-02-06  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/84154
        * config/rs6000/rs6000.md (su code attribute): Use "u" for
        unsigned_fix, not "s".

2018-02-06  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * configure.ac (gcc_fn_eh_frame_ro): New function.
        (gcc_cv_as_cfi_directive): Check both 32 and 64-bit assembler for
        correct .eh_frame permissions.
        * configure: Regenerate.

2018-02-06  Andrew Jenner  <andrew@codeourcery.com>

        * doc/invoke.texi: Add section for the PowerPC SPE backend. Remove
        irrelevant options.

2018-02-06  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_option_override_internal):
        Display warning message for -mno-speculate-indirect-jumps.

2018-02-06  Andrew Jenner  <andrew@codesourcery.com>

        * config/powerpcspe/powerpcspe.opt: (msimple-fpu, mfpu) Add
        Undocumented.
        * config/powerpcspe/sysv4.opt (mbit-align): Likewise.

2018-02-06  Aldy Hernandez  <aldyh@redhat.com>

        PR tree-optimization/84225
        * tree-eh.c (find_trapping_overflow): Only call
        operation_no_trapping_overflow when ANY_INTEGRAL_TYPE_P.

2018-02-06  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>

        PR target/84145
        * config/i386/i386.c: Reimplement the check of possible options
        -mibt/-mshstk conbination. Change error messages.
        * doc/invoke.texi: Fix a typo: remove extra '='.

2018-02-06  Marek Polacek  <polacek@redhat.com>

        PR tree-optimization/84228
        * tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Skip debug statements.

2018-02-06  Tamar Christina  <tamar.christina@arm.com>

        PR target/82641
        * config/arm/arm.c (arm_print_asm_arch_directives): Record already
        emitted arch directives.
        * config/arm/arm-c.c (arm_cpu_builtins): Undefine __ARM_ARCH and
        __ARM_FEATURE_COPROC before changing architectures.

2018-02-06  Richard Biener  <rguenther@suse.de>

        * config/i386/i386.c (print_reg): Fix typo.
        (ix86_loop_unroll_adjust): Do not unroll beyond the original nunroll.

2018-02-06  Eric Botcazou  <ebotcazou@adacore.com>

        * configure: Regenerate.

2018-02-05  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83369
        * tree-ssa-ccp.c (pass_post_ipa_warn::execute): Use %G to print
        inlining context.

2018-02-05  Martin Liska  <mliska@suse.cz>

        * doc/invoke.texi: Cherry-pick upstream r323995.

2018-02-05  Richard Sandiford  <richard.sandiford@linaro.org>

        * ira.c (ira_init_register_move_cost): Adjust comment.

2018-02-05  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/84137
        * doc/gcov.texi: Fix typo in documentation.

2018-02-05  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/83879
        * doc/gcov.texi: Document necessity of --dynamic-list-data when
        using dlopen functionality.

2018-02-05  Olga Makhotina  <olga.makhotina@intel.com>

        * config/i386/avx512dqintrin.h (_mm_mask_range_sd, _mm_maskz_range_sd,
        _mm_mask_range_round_sd, _mm_maskz_range_round_sd, _mm_mask_range_ss,
        _mm_maskz_range_ss, _mm_mask_range_round_ss,
        _mm_maskz_range_round_ss): New intrinsics.
        (__builtin_ia32_rangesd128_round)
        (__builtin_ia32_rangess128_round): Remove.
        (__builtin_ia32_rangesd128_mask_round,
        __builtin_ia32_rangess128_mask_round): New builtins.
        * config/i386/i386-builtin.def (__builtin_ia32_rangesd128_round,
        __builtin_ia32_rangess128_round): Remove.
        (__builtin_ia32_rangesd128_mask_round,
        __builtin_ia32_rangess128_mask_round): New builtins.
        * config/i386/sse.md (ranges<mode><round_saeonly_name>): Renamed to ...
        (ranges<mode><mask_scalar_name><round_saeonly_scalar_name>): ... this.
        ((match_operand:VF_128 2 "<round_saeonly_nimm_predicate>"
        "<round_saeonly_constraint>")): Changed to ...
        ((match_operand:VF_128 2 "<round_saeonly_scalar_nimm_predicate>"
        "<round_saeonly_scalar_constraint>")): ... this.
        ("vrange<ssescalarmodesuffix>\t{%3, <round_saeonly_op4>%2, %1, %0|
        %0, %1, %2<round_saeonly_op4>, %3}"): Changed to ...
        ("vrange<ssescalarmodesuffix>\t{%3, <round_saeonly_scalar_mask_op4>%2,
        %1, %0<mask_scalar_operand4>|%0<mask_scalar_operand4>, %1,
        %2<round_saeonly_scalar_mask_op4>, %3}"): ... this.

2018-02-02  Andrew Jenner  <andrew@codesourcery.com>

        * config/powerpcspe/powerpcspe.opt: Add Undocumented to irrelevant
        options.
        * config/powerpcspe/powerpcspe-tables.opt (rs6000_cpu_opt_value):
        Remove all values except native, 8540 and 8548.

2018-02-02  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386.c (ix86_output_function_return): Pass
        INVALID_REGNUM, instead of -1, as invalid register number to
        indirect_thunk_name and output_indirect_thunk.

2018-02-02  Julia Koval  <julia.koval@intel.com>

        * config.gcc: Add -march=icelake.
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect icelake.
        * config/i386/i386-c.c (ix86_target_macros_internal): Handle icelake.
        * config/i386/i386.c (processor_costs): Add m_ICELAKE.
        (PTA_ICELAKE, PTA_AVX512VNNI, PTA_GFNI, PTA_VAES, PTA_AVX512VBMI2,
        PTA_VPCLMULQDQ, PTA_RDPID, PTA_AVX512BITALG): New.
        (processor_target_table): Add icelake.
        (ix86_option_override_internal): Handle new PTAs.
        (get_builtin_code_for_version): Handle icelake.
        (M_INTEL_COREI7_ICELAKE): New.
        (fold_builtin_cpu): Handle icelake.
        * config/i386/i386.h (TARGET_ICELAKE, PROCESSOR_ICELAKE): New.
        * doc/invoke.texi: Add -march=icelake.

2018-02-02  Julia Koval  <julia.koval@intel.com>

        * config/i386/i386.c (ix86_option_override_internal): Change flags type
        to wide_int_bitmask.
        * wide-int-bitmask.h: New.

2018-02-02  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>

        PR target/84066
        * config/i386/i386.md: Replace Pmode with word_mode in
        builtin_setjmp_setup and builtin_longjmp to support x32.

2018-02-01  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/56010
        PR target/83743
        * config/rs6000/driver-rs6000.c: #include "diagnostic.h".
        #include "opts.h".
        (rs6000_supported_cpu_names): New static variable.
        (linux_cpu_translation_table): Likewise.
        (elf_platform) <cpu>: Define new static variable and use it.
        Translate kernel AT_PLATFORM name to canonical name if needed.
        Error if platform name is unknown.

2018-02-01  Aldy Hernandez  <aldyh@redhat.com>

        PR target/84089
        * config/pa/predicates.md (base14_operand): Handle E_VOIDmode.

2018-02-01  Jeff Law  <law@redhat.com>

        PR target/84128
        * config/i386/i386.c (release_scratch_register_on_entry): Add new
        OFFSET and RELEASE_VIA_POP arguments.  Use SP+OFFSET to restore
        the scratch if RELEASE_VIA_POP is false.
        (ix86_adjust_stack_and_probe_stack_clash): Un-constify SIZE.
        If we have to save a temporary register, decrement SIZE appropriately.
        Pass new arguments to release_scratch_register_on_entry.
        (ix86_adjust_stack_and_probe): Likewise.
        (ix86_emit_probe_stack_range): Pass new arguments to
        release_scratch_register_on_entry.

2018-02-01  Uros Bizjak  <ubizjak@gmail.com>

        PR rtl-optimization/84157
        * combine.c (change_zero_ext): Use REG_P predicate in
        front of HARD_REGISTER_P predicate.

2018-02-01  Georg-Johann Lay  <avr@gjlay.de>

        * config/avr/avr.c (avr_option_override): Move disabling of
        -fdelete-null-pointer-checks to...
        * common/config/avr/avr-common.c (avr_option_optimization_table):
        ...here.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/81635
        * tree-data-ref.c (split_constant_offset_1): For types that
        wrap on overflow, try to use range info to prove that wrapping
        cannot occur.

2018-02-01  Renlin Li  <renlin.li@arm.com>

        PR target/83370
        * config/aarch64/aarch64.c (aarch64_class_max_nregs): Handle
        TAILCALL_ADDR_REGS.
        (aarch64_register_move_cost): Likewise.
        * config/aarch64/aarch64.h (reg_class): Rename CALLER_SAVE_REGS to
        TAILCALL_ADDR_REGS.
        (REG_CLASS_NAMES): Likewise.
        (REG_CLASS_CONTENTS): Rename CALLER_SAVE_REGS to
        TAILCALL_ADDR_REGS. Remove IP registers.
        * config/aarch64/aarch64.md (Ucs): Update register constraint.

2018-02-01  Richard Biener  <rguenther@suse.de>

        * domwalk.h (dom_walker::dom_walker): Add additional constructor
        for specifying RPO order and allow NULL for that.
        * domwalk.c (dom_walker::dom_walker): Likewise.
        (dom_walker::walk): Handle NULL RPO order.
        * tree-into-ssa.c (rewrite_dom_walker): Do not walk dom children
        in RPO order.
        (rewrite_update_dom_walker): Likewise.
        (mark_def_dom_walker): Likewise.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64-protos.h (aarch64_split_sve_subreg_move)
        (aarch64_maybe_expand_sve_subreg_move): Declare.
        * config/aarch64/aarch64.md (UNSPEC_REV_SUBREG): New unspec.
        * config/aarch64/predicates.md (aarch64_any_register_operand): New
        predicate.
        * config/aarch64/aarch64-sve.md (mov<mode>): Optimize subreg moves
        that are semantically a reverse operation.
        (*aarch64_sve_mov<mode>_subreg_be): New pattern.
        * config/aarch64/aarch64.c (aarch64_maybe_expand_sve_subreg_move):
        (aarch64_replace_reg_mode, aarch64_split_sve_subreg_move): New
        functions.
        (aarch64_can_change_mode_class): For big-endian, forbid changes
        between two SVE modes if they have different element sizes.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.c (aarch64_expand_sve_const_vector): Prefer
        the TImode handling for big-endian targets.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64-sve.md (sve_ld1rq): Replace with...
        (*sve_ld1rq<Vesize>): ... this new pattern.  Handle all element sizes,
        not just bytes.
        * config/aarch64/aarch64.c (aarch64_expand_sve_widened_duplicate):
        Remove BSWAP handing for big-endian targets and use the form of
        LD1RQ appropariate for the mode.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.c (aarch64_simd_valid_immediate): Handle
        all CONST_VECTOR_DUPLICATE_P vectors, not just those with a single
        duplicated element.

2018-02-01  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tearget/83845
        * config/aarch64/aarch64.c (aarch64_secondary_reload): Tighten
        check for operands that need to go through aarch64_sve_reload_be.

2018-02-01  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/81661
        PR tree-optimization/84117
        * tree-eh.h (rewrite_to_non_trapping_overflow): Declare.
        * tree-eh.c: Include gimplify.h.
        (find_trapping_overflow, replace_trapping_overflow,
        rewrite_to_non_trapping_overflow): New functions.
        * tree-vect-loop.c: Include tree-eh.h.
        (vect_get_loop_niters): Use rewrite_to_non_trapping_overflow.
        * tree-data-ref.c: Include tree-eh.h.
        (get_segment_min_max): Use rewrite_to_non_trapping_overflow.

2018-01-31  Uros Bizjak  <ubizjak@gmail.com>

        PR rtl-optimization/84123
        * combine.c (change_zero_ext): Check if hard register satisfies
        can_change_dest_mode before calling gen_lowpart_SUBREG.

2018-01-31  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/82444
        * ira.c (ira_init_register_move_cost): Remove assert.

2018-01-31  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/84071
        * doc/tm.texi.in (WORD_REGISTER_OPERATIONS): Add explicit case.
        * doc/tm.texi: Regenerate.

2018-01-31  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84132
        * tree-data-ref.c (analyze_miv_subscript): Properly
        check whether evolution_function_is_affine_multivariate_p
        before calling gcd_of_steps_may_divide_p.

2018-01-31  Julia Koval  <julia.koval@intel.com>

        PR target/83618
        * config/i386/i386.c (ix86_expand_builtin): Handle IX86_BUILTIN_RDPID.
        * config/i386/i386.md (rdpid_rex64) New.
        (rdpid): Make 32bit only.

2018-01-29  Aldy Hernandez  <aldyh@redhat.com>

        PR lto/84105
        * tree-pretty-print.c (dump_generic_node): Handle a TYPE_NAME with
        an IDENTIFIER_NODE for FUNCTION_TYPE's.

2018-01-31  Eric Botcazou  <ebotcazou@adacore.com>

        Revert
        2018-01-12  Eric Botcazou  <ebotcazou@adacore.com>

        * config/sparc/sparc.md (vxworks_load_got): Set the GOT register.

2018-01-31  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/84071
        * combine.c (record_dead_and_set_regs_1): Record the source unmodified
        for a paradoxical SUBREG on a WORD_REGISTER_OPERATIONS target.

2018-01-31  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (arc_handle_aux_attribute): New function.
        (arc_attribute_table): Add 'aux' attribute.
        (arc_in_small_data_p): Consider aux like variables.
        (arc_is_aux_reg_p): New function.
        (arc_asm_output_aligned_decl_local): Ignore 'aux' like variables.
        (arc_get_aux_arg): New function.
        (prepare_move_operands): Handle aux-register access.
        (arc_handle_aux_attribute): New function.
        * doc/extend.texi (ARC Variable attributes): Add subsection.

2018-01-31  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-protos.h (arc_is_uncached_mem_p): Function proto.
        * config/arc/arc.c (arc_handle_uncached_attribute): New function.
        (arc_attribute_table): Add 'uncached' attribute.
        (arc_print_operand): Print '.di' flag for uncached memory
        accesses.
        (arc_in_small_data_p): Do not consider for small data the uncached
        types.
        (arc_is_uncached_mem_p): New function.
        * config/arc/predicates.md (compact_store_memory_operand): Check
        for uncached memory accesses.
        (nonvol_nonimm_operand): Likewise.
        * gcc/doc/extend.texi (ARC Type Attribute): New subsection.

2018-01-31  Jakub Jelinek  <jakub@redhat.com>

        PR c/84100
        * common.opt (falign-functions=, falign-jumps=, falign-labels=,
        falign-loops=): Add Optimization flag.

2018-01-30  Jeff Law  <law@redhat.com>

        PR target/84064
        * i386.c (ix86_adjust_stack_and_probe_stack_clash): New argument
        INT_REGISTERS_SAVED.  Check it prior to calling
        get_scratch_register_on_entry.
        (ix86_adjust_stack_and_probe): Similarly.
        (ix86_emit_probe_stack_range): Similarly.
        (ix86_expand_prologue): Corresponding changes.

2018-01-30  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR target/40411
        * config/sol2.h (STARTFILE_ARCH_SPEC): Use -std=c*,
        -std=iso9899:199409 instead of -pedantic to select values-Xc.o.

2018-01-30  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/84112
        * lra-constraints.c (curr_insn_transform): Process AND in the
        address.

2018-01-30  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/83986
        * sched-deps.c (sched_analyze_insn): For frame related insns, add anti
        dependence against last_pending_memory_flush in addition to
        pending_jump_insns.

2018-01-30  Alexandre Oliva  <aoliva@redhat.com>

        PR tree-optimization/81611
        * tree-ssa-dom.c (simple_iv_increment_p): Skip intervening
        copies.

2018-01-30  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        PR target/83758
        * config/rs6000/rs6000.c (rs6000_internal_arg_pointer): Only return
        a reg rtx.

2018-01-30  Richard Biener  <rguenther@suse.de>
            Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/84111
        * tree-ssa-loop-ivcanon.c (tree_unroll_loops_completely_1): Skip
        inner loops added during recursion, as they don't have up-to-date
        SSA form.

2018-01-30  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/81360
        * ipa-inline.c (can_inline_edge_p): Break out late tests to...
        (can_inline_edge_by_limits_p): ... here.
        (can_early_inline_edge_p, check_callers,
        update_caller_keys, update_callee_keys, recursive_inlining,
        add_new_edges_to_heap, speculation_useful_p,
        inline_small_functions,
        inline_small_functions, flatten_function,
        inline_to_all_callers_1): Update.

2018-01-30  Jan Hubicka  <hubicka@ucw.cz>

        * profile-count.c (profile_count::combine_with_ipa_count): Handle
        zeros correctly.

2018-01-30  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83008
        * tree-vect-slp.c (vect_analyze_slp_cost_1): Properly cost
        invariant and constant vector uses in stmts when they need
        more than one stmt.

2018-01-30  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR bootstrap/84017
        * configure.ac (gcc_cv_as_shf_merge): Disable on Solaris 10/x86.
        * configure: Regenerate.

2018-01-30  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64-sve.md (*vec_extract<mode><Vel>_0): New
        pattern.
        (*vec_extract<mode><Vel>_v128): Require a nonzero lane number.
        Use gen_rtx_REG rather than gen_lowpart.

2018-01-30  Richard Sandiford  <richard.sandiford@linaro.org>

        * lra-constraints.c (match_reload): Use subreg_lowpart_offset
        rather than 0 when creating partial subregs.

2018-01-30  Richard Sandiford  <richard.sandiford@linaro.org>

        * vec-perm-indices.c (vec_perm_indices::series_p): Give examples
        of usage.

2018-01-29  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/81550
        * config/rs6000/rs6000.c (rs6000_setup_reg_addr_masks): If DFmode
        and SFmode can go in Altivec registers (-mcpu=power7 for DFmode,
        -mcpu=power8 for SFmode) don't set the PRE_INCDEC or PRE_MODIFY
        flags.  This restores the settings used before the 2017-07-24.
        Turning off pre increment/decrement/modify allows IVOPTS to
        optimize DF/SF loops where the index is an int.

2018-01-29  Richard Biener  <rguenther@suse.de>
            Kelvin Nilsen  <kelvin@gcc.gnu.org>

        PR bootstrap/80867
        * tree-vect-stmts.c (vectorizable_call): Don't call
        targetm.vectorize_builtin_md_vectorized_function if callee is
        NULL.

2018-01-22  Carl Love  <cel@us.ibm.com>

        * doc/extend.tex: Fix typo in second arg in
        __builtin_bcdadd_{lt|eq|gt|ov} and __builtin_bcdsub_{lt|eq|gt|ov}.

2018-01-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84086
        * tree-ssanames.c: Include cfgloop.h and tree-scalar-evolution.h.
        (flush_ssaname_freelist): When SSA names were released reset
        the SCEV hash table.

2018-01-29  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84057
        * tree-ssa-loop-ivcanon.c (unloop_loops): Deal with already
        removed paths when removing edges.

2018-01-27  H.J. Lu  <hongjiu.lu@intel.com>

        * doc/invoke.texi: Replace -mfunction-return==@var{choice} with
        -mfunction-return=@var{choice}.

2018-01-27  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR diagnostic/84034
        * diagnostic-show-locus.c (get_line_width_without_trailing_whitespace):
        Handle CR like TAB.
        (layout::print_source_line): Likewise.
        (test_get_line_width_without_trailing_whitespace): Add test cases.

2018-01-27  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/84040
        * sched-deps.c (sched_macro_fuse_insns): Return immediately for
        debug insns.

2018-01-26  Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.h (MAX_FIXED_MODE_SIZE): New.

        * config/riscv/elf.h (LIB_SPEC): Don't include -lgloss when nosys.specs
        specified.

2018-01-26  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64.md: Add peepholes for CMP + SUB -> SUBS
        and CMP + SUB-immediate -> SUBS.

2018-01-26  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83896
        * tree-ssa-strlen.c (get_string_len): Rename...
        (get_string_cst_length): ...to this.  Return HOST_WIDE_INT.
        Avoid assuming length is constant.
        (handle_char_store): Use HOST_WIDE_INT for string length.

2018-01-26  Uros Bizjak  <ubizjak@gmail.com>

        PR target/81763
        * config/i386/i386.md (*andndi3_doubleword): Add earlyclobber
        to (=&r,r,rm) alternative. Add (=r,0,rm) and (=r,r,0) alternatives.

2018-01-26  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/84003
        * dse.c (record_store): Only record redundant stores when
        the earlier store aliases at least all accesses the later one does.

2018-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/83985
        * dce.c (deletable_insn_p): Return false for separate shrink wrapping
        REG_CFA_RESTORE insns.
        (delete_unmarked_insns): Don't ignore separate shrink wrapping
        REG_CFA_RESTORE insns here.

        PR c/83989
        * gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): Don't
        use SSA_NAME_VAR as base for SSA_NAMEs with non-NULL SSA_NAME_VAR.

2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-arch.h (arc_tune_attr): Add ARC_TUNE_CORE_3.
        * config/arc/arc.c (arc_sched_issue_rate): Use ARC_TUNE_... .
        (arc_init): Likewise.
        (arc_override_options): Likewise.
        (arc_file_start): Choose Tag_ARC_CPU_variation based on arc_tune
        value.
        (hwloop_fail): Use TARGET_DBNZ when we want to check for dbnz insn
        support.
        * config/arc/arc.h (TARGET_DBNZ): Define.
        * config/arc/arc.md (attr tune): Add core_3, use ARC_TUNE_... to
        properly set the tune attribute.
        (dbnz): Use TARGET_DBNZ guard.
        * config/arc/arc.opt (mtune): Add core3 option.

2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (arc_delegitimize_address_0): Refactored to
        recognize new pic like addresses.
        (arc_delegitimize_address): Clean up.

2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-arches.def: Option mrf16 valid for all
        architectures.
        * config/arc/arc-c.def (__ARC_RF16__): New predefined macro.
        * config/arc/arc-cpus.def (em_mini): New cpu with rf16 on.
        * config/arc/arc-options.def (FL_RF16): Add mrf16 option.
        * config/arc/arc-tables.opt: Regenerate.
        * config/arc/arc.c (arc_conditional_register_usage): Handle
        reduced register file case.
        (arc_file_start): Set must have build attributes.
        * config/arc/arc.h (MAX_ARC_PARM_REGS): Conditional define using
        mrf16 option value.
        * config/arc/arc.opt (mrf16): Add new option.
        * config/arc/elf.h (ATTRIBUTE_PCS): Define.
        * config/arc/genmultilib.awk: Handle new mrf16 option.
        * config/arc/linux.h (ATTRIBUTE_PCS): Define.
        * config/arc/t-multilib: Regenerate.
        * doc/invoke.texi (ARC Options): Document mrf16 option.

2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-protos.h: Add arc_is_secure_call_p proto.
        * config/arc/arc.c (arc_handle_secure_attribute): New function.
        (arc_attribute_table): Add 'secure_call' attribute.
        (arc_print_operand): Print secure call operand.
        (arc_function_ok_for_sibcall): Don't optimize tail calls when
        secure.
        (arc_is_secure_call_p): New function.  * config/arc/arc.md
        (call_i): Add support for sjli instruction.
        (call_value_i): Likewise.
        * config/arc/constraints.md (Csc): New constraint.

2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>
            John Eric Martin  <John.Martin@emmicro-us.com>

        * config/arc/arc-protos.h: Add arc_is_jli_call_p proto.
        * config/arc/arc.c (_arc_jli_section): New struct.
        (arc_jli_section): New type.
        (rc_jli_sections): New static variable.
        (arc_handle_jli_attribute): New function.
        (arc_attribute_table): Add jli_always and jli_fixed attribute.
        (arc_file_end): New function.
        (TARGET_ASM_FILE_END): Define.
        (arc_print_operand): Reuse 'S' letter for JLI output instruction.
        (arc_add_jli_section): New function.
        (jli_call_scan): Likewise.
        (arc_reorg): Call jli_call_scan.
        (arc_output_addsi): Remove 'S' from printing asm operand.
        (arc_is_jli_call_p): New function.
        * config/arc/arc.md (movqi_insn): Remove 'S' from printing asm
        operand.
        (movhi_insn): Likewise.
        (movsi_insn): Likewise.
        (movsi_set_cc_insn): Likewise.
        (loadqi_update): Likewise.
        (load_zeroextendqisi_update): Likewise.
        (load_signextendqisi_update): Likewise.
        (loadhi_update): Likewise.
        (load_zeroextendhisi_update): Likewise.
        (load_signextendhisi_update): Likewise.
        (loadsi_update): Likewise.
        (loadsf_update): Likewise.
        (movsicc_insn): Likewise.
        (bset_insn): Likewise.
        (bxor_insn): Likewise.
        (bclr_insn): Likewise.
        (bmsk_insn): Likewise.
        (bicsi3_insn): Likewise.
        (cmpsi_cc_c_insn): Likewise.
        (movsi_ne): Likewise.
        (movsi_cond_exec): Likewise.
        (clrsbsi2): Likewise.
        (norm_f): Likewise.
        (normw): Likewise.
        (swap): Likewise.
        (divaw): Likewise.
        (flag): Likewise.
        (sr): Likewise.
        (kflag): Likewise.
        (ffs): Likewise.
        (ffs_f): Likewise.
        (fls): Likewise.
        (call_i): Remove 'S' asm letter, add jli instruction.
        (call_value_i): Likewise.
        * config/arc/arc.op (mjli-always): New option.
        * config/arc/constraints.md (Cji): New constraint.
        * config/arc/fpx.md (addsf3_fpx): Remove 'S' from printing asm
        operand.
        (subsf3_fpx): Likewise.
        (mulsf3_fpx): Likewise.
        * config/arc/simdext.md (vendrec_insn): Remove 'S' from printing
        asm operand.
        * doc/extend.texi (ARC): Document 'jli-always' and 'jli-fixed'
        function attrbutes.
        * doc/invoke.texi (ARC): Document mjli-always option.

2018-01-26  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.c (rl78_addsi3_internal): If operand 2 is const 
        avoid addition with 0 and use incw and decw where possible.

2018-01-26  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/81082
        * fold-const.c (fold_plusminus_mult_expr): Do not perform the
        association if it requires casting to unsigned.
        * match.pd ((A * C) +- (B * C) -> (A+-B)): New patterns derived
        from fold_plusminus_mult_expr to catch important cases late when
        range info is available.

2018-01-26  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * config/i386/sol2.h (USE_HIDDEN_LINKONCE): Remove.
        * configure.ac (hidden_linkonce): New test.
        * configure: Regenerate.
        * config.in: Regenerate.

2018-01-26  Julia Koval  <julia.koval@intel.com>

        * config/i386/avx512bitalgintrin.h (_mm512_bitshuffle_epi64_mask,
        _mm512_mask_bitshuffle_epi64_mask, _mm256_bitshuffle_epi64_mask,
        _mm256_mask_bitshuffle_epi64_mask, _mm_bitshuffle_epi64_mask,
        _mm_mask_bitshuffle_epi64_mask): Fix type.
        * config/i386/i386-builtin-types.def (UHI_FTYPE_V2DI_V2DI_UHI,
        USI_FTYPE_V4DI_V4DI_USI): Remove.
        * config/i386/i386-builtin.def (__builtin_ia32_vpshufbitqmb512_mask,
        __builtin_ia32_vpshufbitqmb256_mask,
        __builtin_ia32_vpshufbitqmb128_mask): Fix types.
        * config/i386/i386.c (ix86_expand_args_builtin): Remove old types.
        * config/i386/sse.md (VI1_AVX512VLBW): Change types.

2018-01-26  Alan Modra  <amodra@gmail.com>

        PR target/84033
        * config/rs6000/rs6000-p8swap.c (rtx_is_swappable_p): Exclude
        UNSPEC_VBPERMQ.  Sort other unspecs.

2018-01-25  David Edelsohn  <dje.gcc@gmail.com>

        * doc/invoke.texi (PowerPC Options): Document 'native' cpu type.

2018-01-25  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83055
        * predict.c (drop_profile): Do not push/pop cfun; update also
        node->count.
        (handle_missing_profiles): Fix logic looking for zero profiles.

2018-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/83977
        * ipa-fnsummary.c (compute_fn_summary): Clear can_change_signature
        on functions with #pragma omp declare simd or functions with simd
        attribute.
        * omp-simd-clone.c (expand_simd_clones): Revert 2018-01-24 change.
        * config/i386/i386.c (ix86_simd_clone_compute_vecsize_and_simdlen):
        Remove trailing \n from warning_at calls.

2018-01-25  Tom de Vries  <tom@codesourcery.com>

        PR target/84028
        * config/nvptx/nvptx.c (nvptx_single): Add exit insn after noreturn call
        for neutered workers.

2018-01-24  Joseph Myers  <joseph@codesourcery.com>

        PR target/68467
        * config/m68k/m68k.c (m68k_promote_function_mode): New function.
        (TARGET_PROMOTE_FUNCTION_MODE): New macro.

2018-01-24  Jeff Law  <law@redhat.com>

        PR target/83994
        * i386.c (get_probe_interval): Move to earlier point.
        (ix86_compute_frame_layout): If -fstack-clash-protection and
        the frame is larger than the probe interval, then use pushes
        to save registers rather than reg->mem moves.
        (ix86_expand_prologue): Remove conditional for int_registers_saved
        assertion.

2018-01-24  Vladimir Makarov  <vmakarov@redhat.com>

        PR target/84014
        * ira-build.c (setup_min_max_allocno_live_range_point): Set up
        min/max for never referenced object.

2018-01-24  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/83977
        * tree.c (free_lang_data_in_decl): Don't clear DECL_ABSTRACT_ORIGIN
        here.
        * omp-low.c (create_omp_child_function): Remove "omp declare simd"
        attributes from DECL_ATTRIBUTES (decl) without affecting
        DECL_ATTRIBUTES (current_function_decl).
        * omp-simd-clone.c (expand_simd_clones): Ignore DECL_ARTIFICIAL
        functions with non-NULL DECL_ABSTRACT_ORIGIN.

2018-01-24  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83979
        * fold-const.c (fold_comparison): Use constant_boolean_node
        instead of boolean_{true,false}_node.

2018-01-24  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-profile.c (ipa_propagate_frequency_1): Fix logic skipping calls
        with zero counts.

2018-01-24  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000.md (*call_indirect_nonlocal_sysv<mode>):
        Simplify the clause that sets the length attribute.
        (*call_value_indirect_nonlocal_sysv<mode>): Likewise.
        (*sibcall_nonlocal_sysv<mode>): Clean up code block; simplify the
        clause that sets the length attribute.
        (*sibcall_value_nonlocal_sysv<mode>): Likewise.

2018-01-24  Tom de Vries  <tom@codesourcery.com>

        PR target/83589
        * config/nvptx/nvptx.c (WORKAROUND_PTXJIT_BUG_2): Define to 1.
        (nvptx_pc_set, nvptx_condjump_label): New function. Copy from jump.c.
        Add strict parameter.
        (prevent_branch_around_nothing): Insert dummy insn between branch to
        label and label with no ptx insn inbetween.
        * config/nvptx/nvptx.md (define_insn "fake_nop"): New insn.

2018-01-24  Tom de Vries  <tom@codesourcery.com>

        PR target/81352
        * config/nvptx/nvptx.c (nvptx_single): Add exit insn after noreturn call
        for neutered threads in warp.
        * config/nvptx/nvptx.md (define_insn "exit"): New insn.

2018-01-24  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83176
        * tree-chrec.c (chrec_fold_plus_1): Handle (signed T){(T) .. }
        operands.

2018-01-24  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/82819
        * graphite-isl-ast-to-gimple.c (binary_op_to_tree): Avoid
        code generating pluses that are no-ops in the target precision.

2018-01-24  Richard Biener  <rguenther@suse.de>

        PR middle-end/84000
        * tree-cfg.c (replace_loop_annotate): Handle annot_expr_parallel_kind.

2018-01-23  Jan Hubicka  <hubicka@ucw.cz>

        * cfgcleanup.c (try_crossjump_to_edge): Use combine_with_count
        to merge probabilities.
        * predict.c (probably_never_executed): Also mark as cold functions
        with global 0 profile and guessed local profile.
        * profile-count.c (profile_probability::combine_with_count): New
        member function.
        * profile-count.h (profile_probability::operator*,
        profile_probability::operator*=, profile_probability::operator/,
        profile_probability::operator/=): Reduce precision to adjusted
        and set value to guessed on contradictory divisions.
        (profile_probability::combine_with_freq): Remove.
        (profile_probability::combine_wiht_count): Declare.
        (profile_count::force_nonzero):: Set to adjusted.
        (profile_count::probability_in):: Set quality to adjusted.
        * tree-ssa-tail-merge.c (replace_block_by): Use
        combine_with_count.

2018-01-23  Andrew Waterman  <andrew@sifive.com>
            Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv.c (riscv_stack_boundary): New.
        (riscv_option_override): Set riscv_stack_boundary.  Handle
        riscv_preferred_stack_boundary_arg.
        * config/riscv/riscv.h (MIN_STACK_BOUNDARY, ABI_STACK_BOUNDARY): New.
        (BIGGEST_ALIGNMENT): Set to STACK_BOUNDARY.
        (STACK_BOUNDARY): Set to riscv_stack_boundary.
        (RISCV_STACK_ALIGN): Use STACK_BOUNDARY.
        * config/riscv/riscv.opt (mpreferred-stack-boundary): New.
        * doc/invoke.tex (RISC-V Options): Add -mpreferred-stack-boundary.

2018-01-23  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/83905
        * config/i386/i386.c (ix86_expand_prologue): Use cost reference
        of struct ix86_frame.
        (ix86_expand_epilogue): Likewise.  Add a local variable for
        the reg_save_offset field in struct ix86_frame.

2018-01-23  Bin Cheng  <bin.cheng@arm.com>

        PR tree-optimization/82604
        * tree-loop-distribution.c (enum partition_kind): New enum item
        PKIND_PARTIAL_MEMSET.
        (partition_builtin_p): Support above new enum item.
        (generate_code_for_partition): Ditto.
        (compute_access_range): Differentiate cases that equality can be
        proven at all loops, the innermost loops or no loops.
        (classify_builtin_st, classify_builtin_ldst): Adjust call to above
        function.  Set PKIND_PARTIAL_MEMSET for partition appropriately.
        (finalize_partitions, distribute_loop): Don't fuse partition of
        PKIND_PARTIAL_MEMSET kind when distributing 3-level loop nest.
        (prepare_perfect_loop_nest): Distribute 3-level loop nest only if
        parloop is enabled.

2018-01-23  Martin Liska  <mliska@suse.cz>

        * predict.def (PRED_INDIR_CALL): Set probability to PROB_EVEN in
        order to ignore the predictor.
        (PRED_POLYMORPHIC_CALL): Likewise.
        (PRED_RECURSIVE_CALL): Likewise.

2018-01-23  Martin Liska  <mliska@suse.cz>

        * tree-profile.c (tree_profiling): Print function header to
        aware reader which function we are working on.
        * value-prof.c (gimple_find_values_to_profile): Do not print
        not interesting value histograms.

2018-01-23  Martin Liska  <mliska@suse.cz>

        * profile-count.h (enum profile_quality): Add
        profile_uninitialized as the first value. Do not number values
        as they are zero based.
        (profile_count::verify): Update sanity check.
        (profile_probability::verify): Likewise.

2018-01-23  Nathan Sidwell  <nathan@acm.org>

        * doc/invoke.texi (ffor-scope): Deprecate.

2018-01-23  David Malcolm  <dmalcolm@redhat.com>

        PR tree-optimization/83510
        * domwalk.c (set_all_edges_as_executable): New function.
        (dom_walker::dom_walker): Convert bool param
        "skip_unreachable_blocks" to enum reachability.  Move setup of
        edge flags to set_all_edges_as_executable and only do it when
        reachability is REACHABLE_BLOCKS.
        * domwalk.h (enum dom_walker::reachability): New enum.
        (dom_walker::dom_walker): Convert bool param
        "skip_unreachable_blocks" to enum reachability.
        (set_all_edges_as_executable): New decl.
        * graphite-scop-detection.c  (gather_bbs::gather_bbs): Convert
        from false for "skip_unreachable_blocks" to ALL_BLOCKS for
        "reachability".
        * tree-ssa-dom.c (dom_opt_dom_walker::dom_opt_dom_walker): Likewise,
        but converting true to REACHABLE_BLOCKS.
        * tree-ssa-sccvn.c (sccvn_dom_walker::sccvn_dom_walker): Likewise.
        * tree-vrp.c
        (check_array_bounds_dom_walker::check_array_bounds_dom_walker):
        Likewise, but converting it to REACHABLE_BLOCKS_PRESERVING_FLAGS.
        (vrp_dom_walker::vrp_dom_walker): Likewise, but converting it to
        REACHABLE_BLOCKS.
        (vrp_prop::vrp_finalize): Call set_all_edges_as_executable
        if check_all_array_refs will be called.

2018-01-23  David Malcolm  <dmalcolm@redhat.com>

        * tree.c (selftest::test_location_wrappers): Add more test
        coverage.

2018-01-23  David Malcolm  <dmalcolm@redhat.com>

        * sbitmap.c (selftest::test_set_range): Fix memory leaks.
        (selftest::test_bit_in_range): Likewise.

2018-01-23  Richard Sandiford  <richard.sandiford@linaro.org>

        PR testsuite/83888
        * doc/sourcebuild.texi (vect_float): Say that the selector
        only describes the situation when -funsafe-math-optimizations is on.
        (vect_float_strict): Document.

2018-01-23  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83965
        * tree-vect-patterns.c (vect_reassociating_reduction_p): New function.
        (vect_recog_dot_prod_pattern, vect_recog_sad_pattern): Use it
        instead of checking only for a reduction.
        (vect_recog_widen_sum_pattern): Likewise.

2018-01-23  Jan Hubicka  <hubicka@ucw.cz>

        * predict.c (probably_never_executed): Only use precise profile info.
        (compute_function_frequency): Skip after inlining hack since we now
        have quality checking.

2018-01-23  Jan Hubicka  <hubicka@ucw.cz>

        * profile-count.h (profile_probability::very_unlikely,
        profile_probability::unlikely, profile_probability::even): Set
        precision to guessed.

2018-01-23  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83963
        * graphite-scop-detection.c (scop_detection::harmful_loop_in_region):
        Properly terminate dominator walk when crossing the exit edge not
        when visiting its source block.

2018-01-23  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83918
        * tree.c (maybe_wrap_with_location): Use NON_LVALUE_EXPR rather than
        VIEW_CONVERT_EXPR to wrap CONST_DECLs.

2018-01-22  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/83957
        * omp-expand.c (expand_omp_for_generic): Ignore virtual PHIs.  Remove
        semicolon after for body surrounded by braces.

        PR tree-optimization/83081
        * profile-count.h (profile_probability::split): New method.
        * dojump.c (do_jump_1) <case TRUTH_ANDIF_EXPR, case TRUTH_ORIF_EXPR>:
        Use profile_probability::split.
        (do_compare_rtx_and_jump): Fix adjustment of probabilities
        when splitting a single conditional jump into 2.

2018-01-22  David Malcolm  <dmalcolm@redhat.com>

        PR tree-optimization/69452
        * tree-ssa-loop-im.c (class move_computations_dom_walker): Remove
        decl.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78-expand.md (bswaphi2): New define_expand.
        * config/rl78/rl78-virt.md (*bswaphi2_virt): New define_insn.
        * config/rl78/rl78-real.md (*bswaphi2_real): New define_insn.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78-protos.h (rl78_split_movdi): New function declaration.
        * config/rl78/rl78.md (movdi): New define_expand.
        * config/rl78/rl78.c (rl78_split_movdi): New function.

2018-01-22  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR target/83862
        * config/rs6000/rs6000-protos.h (rs6000_split_signbit): Delete,
        no longer used.
        * config/rs6000/rs6000.c (rs6000_split_signbit): Likewise.
        * config/rs6000/rs6000.md (signbit<mode>2): Change code for IEEE
        128-bit to produce an UNSPEC move to get the double word with the
        signbit and then a shift directly to do signbit.
        (signbit<mode>2_dm): Replace old IEEE 128-bit signbit
        implementation with a new version that just does either a direct
        move or a regular move.  Move memory interface to separate insns.
        Move insns so they are next to the expander.
        (signbit<mode>2_dm_mem_be): New combiner insns to combine load
        with signbit move.  Split big and little endian case.
        (signbit<mode>2_dm_mem_le): Likewise.
        (signbit<mode>2_dm_<su>ext): Delete, no longer used.
        (signbit<mode>2_dm2): Likewise.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.md (anddi3): New define_expand.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.md (umindi3): New define_expand.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.md (smindi3): New define_expand.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.md (smaxdi3): New define_expand.

2018-01-22  Carl Love  <cel@us.ibm.com>

        * config/rs6000/rs6000-builtin.def (ST_ELEMREV_V1TI, LD_ELEMREV_V1TI,
        LVX_V1TI): Add macro expansion.
        * config/rs6000/rs6000-c.c (altivec_builtin_types): Add argument
        definitions for VSX_BUILTIN_VEC_XST_BE, VSX_BUILTIN_VEC_ST,
        VSX_BUILTIN_VEC_XL, LD_ELEMREV_V1TI builtins.
        * config/rs6000/rs6000-p8swap.c (insn_is_swappable_p);
        Change check to determine if the instruction is a byte reversing
        entry.  Fix typo in comment.
        * config/rs6000/rs6000.c (altivec_expand_builtin): Add case entry
        for VSX_BUILTIN_ST_ELEMREV_V1TI and VSX_BUILTIN_LD_ELEMREV_V1TI.
        Add def_builtin calls for new builtins.
        * config/rs6000/vsx.md (vsx_st_elemrev_v1ti, vsx_ld_elemrev_v1ti):
        Add define_insn expansion.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.md (umaxdi3): New define_expand.

2018-01-22  Sebastian Perta  <sebastian.perta@renesas.com>

        * config/rl78/rl78.c (rl78_note_reg_set): Fixed dead reg check
        for non-QImode registers.

2018-01-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83963
        * graphite-scop-detection.c (scop_detection::get_sese): Delay
        including the loop exit block.
        (scop_detection::merge_sese): Likewise.
        (scop_detection::add_scop): Do it here instead.

2018-01-22  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * doc/sourcebuild.texi (arm_softfloat): Document.

2018-01-21  John David Anglin  <danglin@gcc.gnu.org>

        PR gcc/77734
        * config/pa/pa.c (pa_function_ok_for_sibcall): Use
        targetm.binds_local_p instead of TREE_PUBLIC to check local binding.
        Move TARGET_PORTABLE_RUNTIME check after TARGET_64BIT check.

2018-01-21  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
            David Edelsohn  <dje.gcc@gmail.com>

        PR target/83946
        * config/rs6000/rs6000.md (*call_indirect_nonlocal_sysv<mode>):
        Change "crset eq" to "crset 2".
        (*call_value_indirect_nonlocal_sysv<mode>): Likewise.
        (*call_indirect_aix<mode>_nospec): Likewise.
        (*call_value_indirect_aix<mode>_nospec): Likewise.
        (*call_indirect_elfv2<mode>_nospec): Likewise.
        (*call_value_indirect_elfv2<mode>_nospec): Likewise.
        (*sibcall_nonlocal_sysv<mode>): Change "crset eq" to "crset 2";
        change assembly output from . to $.
        (*sibcall_value_nonlocal_sysv<mode>): Likewise.
        (indirect_jump<mode>_nospec): Change assembly output from . to $.
        (*tablejump<mode>_internal1_nospec): Likewise.

2018-01-21  Oleg Endo  <olegendo@gcc.gnu.org>

        PR target/80870
        * config/sh/sh_optimize_sett_clrt.cc:
        Use INCLUDE_ALGORITHM and INCLUDE_VECTOR instead of direct includes.

2018-01-20  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83940
        * tree-vect-stmts.c (vect_truncate_gather_scatter_offset): Set
        offset_dt to vect_constant_def rather than vect_unknown_def_type.
        (vect_check_load_store_mask): Add a mask_dt_out parameter and
        use it to pass back the definition type.
        (vect_check_store_rhs): Likewise rhs_dt_out.
        (vect_build_gather_load_calls): Add a mask_dt argument and use
        it instead of a call to vect_is_simple_use.
        (vectorizable_store): Update calls to vect_check_load_store_mask
        and vect_check_store_rhs.  Use the dt returned by the latter instead
        of scatter_src_dt.  Use the cached mask_dt and gs_info.offset_dt
        instead of calls to vect_is_simple_use.  Pass the scalar rather
        than the vector operand to vect_is_simple_use when handling
        second and subsequent copies of an rhs value.
        (vectorizable_load): Update calls to vect_check_load_store_mask
        and vect_build_gather_load_calls.  Use the cached mask_dt and
        gs_info.offset_dt instead of calls to vect_is_simple_use.

2018-01-20  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/83945
        * tree-emutls.c: Include gimplify.h.
        (lower_emutls_2): New function.
        (lower_emutls_1): If ADDR_EXPR is a gimple invariant and walk_tree
        with lower_emutls_2 callback finds some TLS decl in it, unshare_expr
        it before further processing.

        PR target/83930
        * simplify-rtx.c (simplify_binary_operation_1) <case UMOD>: Use
        UINTVAL (trueop1) instead of INTVAL (op1).

2018-01-19  Jakub Jelinek  <jakub@redhat.com>

        PR debug/81570
        PR debug/83728
        * dwarf2cfi.c (DEFAULT_INCOMING_FRAME_SP_OFFSET): Define to
        INCOMING_FRAME_SP_OFFSET if not defined.
        (scan_trace): Add ENTRY argument.  If true and
        DEFAULT_INCOMING_FRAME_SP_OFFSET != INCOMING_FRAME_SP_OFFSET,
        emit a note to adjust the CFA offset.
        (create_cfi_notes): Adjust scan_trace callers.
        (create_cie_data): Use DEFAULT_INCOMING_FRAME_SP_OFFSET rather than
        INCOMING_FRAME_SP_OFFSET in the CIE.
        * config/i386/i386.h (DEFAULT_INCOMING_FRAME_SP_OFFSET): Define.
        * config/stormy16/stormy16.h (DEFAULT_INCOMING_FRAME_SP_OFFSET):
        Likewise.
        * doc/tm.texi.in (DEFAULT_INCOMING_FRAME_SP_OFFSET): Document.
        * doc/tm.texi: Regenerated.

2018-01-19  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

        PR rtl-optimization/83147
        * lra-constraints.c (remove_inheritance_pseudos): Use
        lra_substitute_pseudo_within_insn.

2018-01-19  Tom de Vries  <tom@codesourcery.com>
            Cesar Philippidis  <cesar@codesourcery.com>

        PR target/83920
        * config/nvptx/nvptx.c (nvptx_single): Fix jit workaround.

2018-01-19  Cesar Philippidis  <cesar@codesourcery.com>

        PR target/83790
        * config/nvptx/nvptx.c (output_init_frag): Don't use generic address
        spaces for function labels.

2018-01-19  Martin Liska  <mliska@suse.cz>

        * predict.def (PRED_LOOP_EXIT): Change from 85 to 89.
        (PRED_LOOP_EXIT_WITH_RECURSION): Change from 72 to 78.
        (PRED_LOOP_EXTRA_EXIT): Change from 83 to 67.
        (PRED_OPCODE_POSITIVE): Change from 64 to 59.
        (PRED_TREE_OPCODE_POSITIVE): Change from 64 to 59.
        (PRED_CONST_RETURN): Change from 69 to 65.
        (PRED_NULL_RETURN): Change from 91 to 71.
        (PRED_LOOP_IV_COMPARE_GUESS): Change from 98 to 64.
        (PRED_LOOP_GUARD): Change from 66 to 73.

2018-01-19  Martin Liska  <mliska@suse.cz>

        * predict.c (predict_insn_def): Add new assert.
        (struct branch_predictor): Change type to signed integer.
        (test_prediction_value_range): Amend test to cover
        PROB_UNINITIALIZED.
        * predict.def (PRED_LOOP_ITERATIONS): Use the new constant.
        (PRED_LOOP_ITERATIONS_GUESSED): Likewise.
        (PRED_LOOP_ITERATIONS_MAX): Likewise.
        (PRED_LOOP_IV_COMPARE): Likewise.
        * predict.h (PROB_UNINITIALIZED): Define new constant.

2018-01-19  Martin Liska  <mliska@suse.cz>

        * predict.c (dump_prediction): Add new format for
        analyze_brprob.py script which is enabled with -details
        suboption.
        * profile-count.h (precise_p): New function.

2018-01-19  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83922
        * tree-vect-loop.c (vect_verify_full_masking): Return false if
        there are no statements that need masking.
        (vect_active_double_reduction_p): New function.
        (vect_analyze_loop_operations): Use it when handling phis that
        are not in the loop header.

2018-01-19  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83914
        * tree-vect-loop.c (vectorizable_induction): Don't convert
        init_expr or apply the peeling adjustment for inductions
        that are nested within the vectorized loop.

2018-01-19  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/thumb2.md (*thumb2_negsi2_short): Use RSB mnemonic
        instead of NEG.

2018-01-18  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/81715
        PR testsuite/83882
        * function.h (gimplify_parameters): Add gimple_seq * argument.
        * function.c: Include gimple.h and options.h.
        (gimplify_parameters): Add cleanup argument, add CLOBBER stmts
        for the added local temporaries if needed.
        * gimplify.c (gimplify_body): Adjust gimplify_parameters caller,
        if there are any parameter cleanups, wrap whole body into a
        try/finally with the cleanups.

2018-01-18  Wilco Dijkstra  <wdijkstr@arm.com>

        PR target/82964
        * config/aarch64/aarch64.c (aarch64_legitimate_constant_p):
        Use GET_MODE_CLASS for scalar floating point.

2018-01-18  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/82256
        patch by PaX Team
        * cgraphclones.c (cgraph_node::create_version_clone_with_body):
        Fix call of call_cgraph_insertion_hooks.

2018-01-18  Martin Sebor  <msebor@redhat.com>

        * doc/invoke.texi (-Wclass-memaccess): Tweak text.

2018-01-18  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/83619
        * cgraph.c (cgraph_edge::redirect_call_stmt_to_callee): Update edge
        frequencies.

2018-01-18  Boris Kolpackov  <boris@codesynthesis.com>

        PR other/70268
        * common.opt: (-ffile-prefix-map): New option.
        * opts.c (common_handle_option): Defer it.
        * opts-global.c (handle_common_deferred_options): Handle it.
        * debug.h (remap_debug_filename, add_debug_prefix_map): Move to...
        * file-prefix-map.h: New file.
        (remap_debug_filename, add_debug_prefix_map): ...here.
        (add_macro_prefix_map, add_file_prefix_map, remap_macro_filename): New.
        * final.c (debug_prefix_map, add_debug_prefix_map
        remap_debug_filename): Move to...
        * file-prefix-map.c: New file.
        (file_prefix_map, add_prefix_map, remap_filename) ...here and rename,
        generalize, get rid of alloca(), use strrchr() instead of strchr().
        (add_macro_prefix_map, add_debug_prefix_map, add_file_prefix_map):
        Implement in terms of add_prefix_map().
        (remap_macro_filename, remap_debug_filename): Implement in term of
        remap_filename().
        * Makefile.in (OBJS, PLUGIN_HEADERS): Add new files.
        * builtins.c (fold_builtin_FILE): Call remap_macro_filename().
        * dbxout.c: Include file-prefix-map.h.
        * varasm.c: Likewise.
        * vmsdbgout.c: Likewise.
        * xcoffout.c: Likewise.
        * dwarf2out.c: Likewise plus omit new options from DW_AT_producer.
        * doc/cppopts.texi (-fmacro-prefix-map): Document.
        * doc/invoke.texi (-ffile-prefix-map): Document.
        (-fdebug-prefix-map): Update description.

2018-01-18  Martin Liska  <mliska@suse.cz>

        * config/i386/i386.c (indirect_thunk_name): Document that also
        lfence is emitted.
        (output_indirect_thunk): Document why both instructions
        (pause and lfence) are generated.

2018-01-18  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83887
        * graphite-scop-detection.c
        (scop_detection::get_nearest_dom_with_single_entry): Remove.
        (scop_detection::get_nearest_pdom_with_single_exit): Likewise.
        (scop_detection::merge_sese): Re-implement with a flood-fill
        algorithm that properly finds a SESE region if it exists.

2018-01-18  Jakub Jelinek  <jakub@redhat.com>

        PR c/61240
        * match.pd ((P + A) - P, P - (P + A), (P + A) - (P + B)): For
        pointer_diff optimizations use view_convert instead of convert.

2018-01-17  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000.md (*call_indirect_nonlocal_sysv<mode>):
        Generate different code for -mno-speculate-indirect-jumps.
        (*call_value_indirect_nonlocal_sysv<mode>): Likewise.
        (*call_indirect_aix<mode>): Disable for
        -mno-speculate-indirect-jumps.
        (*call_indirect_aix<mode>_nospec): New define_insn.
        (*call_value_indirect_aix<mode>): Disable for
        -mno-speculate-indirect-jumps.
        (*call_value_indirect_aix<mode>_nospec): New define_insn.
        (*sibcall_nonlocal_sysv<mode>): Generate different code for
        -mno-speculate-indirect-jumps.
        (*sibcall_value_nonlocal_sysv<mode>): Likewise.

2018-01-17  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_emit_move): If we load or store a
        long double type, set the flags for noting the default long double
        type, even if we don't pass or return a long double type.

2018-01-17  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/83051
        * ipa-inline.c (flatten_function): Do not overwrite final inlining
        failure.

2018-01-17  Will Schmidt  <will_schmidt@vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_gimple_builtin): Add gimple folding
        support for merge[hl].
        (fold_mergehl_helper): New helper function.
        (tree-vector-builder.h): New #include for tree_vector_builder usage.
        * config/rs6000/altivec.md (altivec_vmrghw_direct): Add xxmrghw insn.
        (altivec_vmrglw_direct): Add xxmrglw insn.

2018-01-17  Andrew Waterman  <andrew@sifive.com>

        * config/riscv/riscv.c (riscv_conditional_register_usage): If
        UNITS_PER_FP_ARG is 0, set call_used_regs to 1 for all FP regs.

2018-01-17  David Malcolm  <dmalcolm@redhat.com>

        PR lto/83121
        * ipa-devirt.c (add_type_duplicate): When comparing memory layout,
        call the lto_location_cache before reading the
        DECL_SOURCE_LOCATION of the types.

2018-01-17  Wilco Dijkstra  <wdijkstr@arm.com>
            Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.md (movti_aarch64): Use Uti constraint.
        * config/aarch64/aarch64.c (aarch64_mov128_immediate): New function.
        (aarch64_legitimate_constant_p): Just support CONST_DOUBLE
        SF/DF/TF mode to avoid creating illegal CONST_WIDE_INT immediates.
        * config/aarch64/aarch64-protos.h (aarch64_mov128_immediate):
        Add declaration.
        * config/aarch64/constraints.md (aarch64_movti_operand):
        Limit immediates.
        * config/aarch64/predicates.md (Uti): Add new constraint.

2018-01-17 Carl Love  <cel@us.ibm.com>

        * config/rs6000/vsx.md (define_expand xl_len_r,
        define_expand stxvl, define_expand *stxvl): Add match_dup argument.
        (define_insn): Add, match_dup 1 argument to define_insn stxvll and
        lxvll.
        (define_expand, define_insn): Move the shift left from  the
        define_insn to the define_expand for lxvl and stxvl instructions.
        * config/rs6000/rs6000-builtin.def (BU_P9V_64BIT_VSX_2): Change LXVL
        and XL_LEN_R definitions to PURE.

2018-01-17  Uros Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.c (indirect_thunk_name): Declare regno
        as unsigned int.  Compare regno with INVALID_REGNUM.
        (output_indirect_thunk): Ditto.
        (output_indirect_thunk_function): Ditto.
        (ix86_code_end): Declare regno as unsigned int.  Use INVALID_REGNUM
        in the call to output_indirect_thunk_function.

2018-01-17  Richard Sandiford  <richard.sandiford@linaro.org>

        PR middle-end/83884
        * expr.c (expand_expr_real_1): Use the size of GET_MODE (op0)
        rather than the size of inner_type to determine the stack slot size
        when handling VIEW_CONVERT_EXPRs on strict-alignment targets.

2018-01-16  Sebastian Peryt  <sebastian.peryt@intel.com>

        PR target/83546
        * config/i386/i386.c (ix86_option_override_internal): Add PTA_RDRND
        to PTA_SILVERMONT.

2018-01-16  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * config.gcc (powerpc*-linux*-*): Add support for 64-bit little
        endian Linux systems to optionally enable multilibs for selecting
        the long double type if the user configured an explicit type.
        * config/rs6000/rs6000.h (TARGET_IEEEQUAD_MULTILIB): Indicate we
        have no long double multilibs if not defined.
        * config/rs6000/rs6000.c (rs6000_option_override_internal): Do not
        warn if the user used -mabi={ieee,ibm}longdouble and we built
        multilibs for long double.
        * config/rs6000/linux64.h (MULTILIB_DEFAULTS_IEEE): Define as the
        appropriate multilib option.
        (MULTILIB_DEFAULTS): Add MULTILIB_DEFAULTS_IEEE to the default
        multilib options.
        * config/rs6000/t-ldouble-linux64le-ibm: New configuration files
        for building long double multilibs.
        * config/rs6000/t-ldouble-linux64le-ieee: Likewise.

2018-01-16  John David Anglin  <danglin@gcc.gnu.org>

        * config.gcc (hppa*-*-linux*): Change callee copies ABI to caller
        copies.

        * config/pa.h (MALLOC_ABI_ALIGNMENT): Set 32-bit alignment default to
        64 bits.
        * config/pa/pa32-linux.h (MALLOC_ABI_ALIGNMENT): Set alignment to
        128 bits.

        * config/pa/som.h (ASM_DECLARE_FUNCTION_NAME): Cleanup type and mode
        variables.

        * config/pa/pa.c (pa_function_arg_size): Apply CEIL to GET_MODE_SIZE
        return value.

2018-01-16  Eric Botcazou  <ebotcazou@adacore.com>

        * gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): For an
        ADDR_EXPR, do not count the offset of a COMPONENT_REF twice.

2018-01-16  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-p8swap.c (rs6000_gen_stvx): Generate
        different rtl trees depending on TARGET_64BIT.
        (rs6000_gen_lvx): Likewise.

2018-01-16  Eric Botcazou  <ebotcazou@adacore.com>

        * config/visium/visium.md (nop): Tweak comment.
        (hazard_nop): Likewise.

2018-01-16  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000.c (rs6000_opt_vars): Add entry for
        -mspeculate-indirect-jumps.
        * config/rs6000/rs6000.md (*call_indirect_elfv2<mode>): Disable
        for -mno-speculate-indirect-jumps.
        (*call_indirect_elfv2<mode>_nospec): New define_insn.
        (*call_value_indirect_elfv2<mode>): Disable for
        -mno-speculate-indirect-jumps.
        (*call_value_indirect_elfv2<mode>_nospec): New define_insn.
        (indirect_jump): Emit different RTL for
        -mno-speculate-indirect-jumps.
        (*indirect_jump<mode>): Disable for
        -mno-speculate-indirect-jumps.
        (*indirect_jump<mode>_nospec): New define_insn.
        (tablejump): Emit different RTL for
        -mno-speculate-indirect-jumps.
        (tablejumpsi): Disable for -mno-speculate-indirect-jumps.
        (tablejumpsi_nospec): New define_expand.
        (tablejumpdi): Disable for -mno-speculate-indirect-jumps.
        (tablejumpdi_nospec): New define_expand.
        (*tablejump<mode>_internal1): Disable for
        -mno-speculate-indirect-jumps.
        (*tablejump<mode>_internal1_nospec): New define_insn.
        * config/rs6000/rs6000.opt (mspeculate-indirect-jumps): New
        option.

2018-01-16  Artyom Skrobov tyomitch@gmail.com

        * caller-save.c (insert_save): Drop unnecessary parameter.  All
        callers updated.

2018-01-16  Jakub Jelinek  <jakub@redhat.com>
            Richard Biener  <rguenth@suse.de>

        PR libgomp/83590
        * gimplify.c (gimplify_one_sizepos): For is_gimple_constant (expr)
        return early, inline manually is_gimple_sizepos.  Make sure if we
        call gimplify_expr we don't end up with a gimple constant.
        * tree.c (variably_modified_type_p): Don't return true for
        is_gimple_constant (_t).  Inline manually is_gimple_sizepos.
        * gimplify.h (is_gimple_sizepos): Remove.

2018-01-16  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83857
        * tree-vect-loop.c (vect_analyze_loop_operations): Don't call
        vectorizable_live_operation for pure SLP statements.
        (vectorizable_live_operation): Handle PHIs.

2018-01-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83867
        * tree-vect-stmts.c (vect_transform_stmt): Precompute
        nested_in_vect_loop_p since the scalar stmt may get invalidated.

2018-01-16  Jakub Jelinek  <jakub@redhat.com>

        PR c/83844
        * stor-layout.c (handle_warn_if_not_align): Use byte_position and
        multiple_of_p instead of unchecked tree_to_uhwi and UHWI check.
        If off is not INTEGER_CST, issue a may not be aligned warning
        rather than isn't aligned.  Use isn%'t rather than isn't.
        * fold-const.c (multiple_of_p) <case BIT_AND_EXPR>: Don't fall through
        into MULT_EXPR.
        <case MULT_EXPR>: Improve the case when bottom and one of the
        MULT_EXPR operands are INTEGER_CSTs and bottom is multiple of that
        operand, in that case check if the other operand is multiple of
        bottom divided by the INTEGER_CST operand.

2018-01-16  Richard Sandiford  <richard.sandiford@linaro.org>

        PR target/83858
        * config/pa/pa.h (FUNCTION_ARG_SIZE): Delete.
        * config/pa/pa-protos.h (pa_function_arg_size): Declare.
        * config/pa/som.h (ASM_DECLARE_FUNCTION_NAME): Use
        pa_function_arg_size instead of FUNCTION_ARG_SIZE.
        * config/pa/pa.c (pa_function_arg_advance): Likewise.
        (pa_function_arg, pa_arg_partial_bytes): Likewise.
        (pa_function_arg_size): New function.

2018-01-16  Richard Sandiford  <richard.sandiford@linaro.org>

        * fold-const.c (fold_ternary_loc): Construct the vec_perm_indices
        in a separate statement.

2018-01-16  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83847
        * tree-vect-data-refs.c (vect_analyze_data_ref_accesses): Don't
        group gathers and scatters.

2018-01-16  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/86620
        * params.def (max-sched-ready-insns): Bump minimum value to 1.

        PR rtl-optimization/83213
        * recog.c (peep2_attempt): Copy over CROSSING_JUMP_P from peepinsn
        to last if both are JUMP_INSNs.

        PR tree-optimization/83843
        * gimple-ssa-store-merging.c
        (imm_store_chain_info::output_merged_store): Handle bit_not_p on
        store_immediate_info for bswap/nop orig_stores.

2018-01-15  Andrew Waterman  <andrew@sifive.com>

        * config/riscv/riscv.c (riscv_rtx_costs) <MULT>: Increase cost if
        !TARGET_MUL.
        <UDIV>: Increase cost if !TARGET_DIV.

2018-01-15  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.md (define_attr "type"): Remove delayed_cr.
        (define_attr "cr_logical_3op"): New.
        (cceq_ior_compare): Adjust.
        (cceq_ior_compare_complement): Adjust.
        (*cceq_rev_compare): Adjust.
        * config/rs6000/rs6000.c (rs6000_adjust_cost): Adjust.
        (is_cracked_insn): Adjust.
        (insn_must_be_first_in_group): Adjust.
        * config/rs6000/40x.md: Adjust.
        * config/rs6000/440.md: Adjust.
        * config/rs6000/476.md: Adjust.
        * config/rs6000/601.md: Adjust.
        * config/rs6000/603.md: Adjust.
        * config/rs6000/6xx.md: Adjust.
        * config/rs6000/7450.md: Adjust.
        * config/rs6000/7xx.md: Adjust.
        * config/rs6000/8540.md: Adjust.
        * config/rs6000/cell.md: Adjust.
        * config/rs6000/e300c2c3.md: Adjust.
        * config/rs6000/e500mc.md: Adjust.
        * config/rs6000/e500mc64.md: Adjust.
        * config/rs6000/e5500.md: Adjust.
        * config/rs6000/e6500.md: Adjust.
        * config/rs6000/mpc.md: Adjust.
        * config/rs6000/power4.md: Adjust.
        * config/rs6000/power5.md: Adjust.
        * config/rs6000/power6.md: Adjust.
        * config/rs6000/power7.md: Adjust.
        * config/rs6000/power8.md: Adjust.
        * config/rs6000/power9.md: Adjust.
        * config/rs6000/rs64.md: Adjust.
        * config/rs6000/titan.md: Adjust.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/predicates.md (indirect_branch_operand): Rewrite
        ix86_indirect_branch_register logic.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/constraints.md (Bs): Update
        ix86_indirect_branch_register check.  Don't check
        ix86_indirect_branch_register with GOT_memory_operand.
        (Bw): Likewise.
        * config/i386/predicates.md (GOT_memory_operand): Don't check
        ix86_indirect_branch_register here.
        (GOT32_symbol_operand): Likewise.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/predicates.md (constant_call_address_operand):
        Rewrite ix86_indirect_branch_register logic.
        (sibcall_insn_operand): Likewise.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/constraints.md (Bs): Replace
        ix86_indirect_branch_thunk_register with
        ix86_indirect_branch_register.
        (Bw): Likewise.
        * config/i386/i386.md (indirect_jump): Likewise.
        (tablejump): Likewise.
        (*sibcall_memory): Likewise.
        (*sibcall_value_memory): Likewise.
        Peepholes of indirect call and jump via memory: Likewise.
        * config/i386/i386.opt: Likewise.
        * config/i386/predicates.md (indirect_branch_operand): Likewise.
        (GOT_memory_operand): Likewise.
        (call_insn_operand): Likewise.
        (sibcall_insn_operand): Likewise.
        (GOT32_symbol_operand): Likewise.

2018-01-15  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/83837
        * omp-expand.c (expand_omp_atomic_pipeline): Use loaded_val
        type rather than type addr's type points to.
        (expand_omp_atomic_mutex): Likewise.
        (expand_omp_atomic): Likewise.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/83839
        * config/i386/i386.c (output_indirect_thunk_function): Use
        ASM_OUTPUT_LABEL, instead of ASM_OUTPUT_DEF, for TARGET_MACHO
        for  __x86_return_thunk.

2018-01-15  Richard Biener  <rguenther@suse.de>

        PR middle-end/83850
        * expmed.c (extract_bit_field_1): Fix typo.

2018-01-15  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR target/83687
        * config/arm/iterators.md (VF): New mode iterator.
        * config/arm/neon.md (neon_vabd<mode>_2): Use the above.
        Remove integer-related logic from pattern.
        (neon_vabd<mode>_3): Likewise.

2018-01-15  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/82694
        * common.opt (fstrict-overflow): No longer an alias.
        (fwrapv-pointer): New option.
        * tree.h (TYPE_OVERFLOW_WRAPS, TYPE_OVERFLOW_UNDEFINED): Define
        also for pointer types based on flag_wrapv_pointer.
        * opts.c (common_handle_option) <case OPT_fstrict_overflow>: Set
        opts->x_flag_wrap[pv] to !value, clear opts->x_flag_trapv if
        opts->x_flag_wrapv got set.
        * fold-const.c (fold_comparison, fold_binary_loc): Revert 2017-08-01
        changes, just use TYPE_OVERFLOW_UNDEFINED on pointer type instead of
        POINTER_TYPE_OVERFLOW_UNDEFINED.
        * match.pd: Likewise in address comparison pattern.
        * doc/invoke.texi: Document -fwrapv and -fstrict-overflow.

2018-01-15  Richard Biener  <rguenther@suse.de>

        PR lto/83804
        * tree.c (free_lang_data_in_type): Always unlink TYPE_DECLs
        from TYPE_FIELDS.  Free TYPE_BINFO if not used by devirtualization.
        Reset type names to their identifier if their TYPE_DECL doesn't
        have linkage (and thus is used for ODR and devirt).
        (save_debug_info_for_decl): Remove.
        (save_debug_info_for_type): Likewise.
        (add_tree_to_fld_list): Adjust.
        * tree-pretty-print.c (dump_generic_node): Make dumping of
        type names more robust.

2018-01-15  Richard Biener  <rguenther@suse.de>

        * BASE-VER: Bump to 8.0.1.

2018-01-14  Martin Sebor  <msebor@redhat.com>

        PR other/83508
        * builtins.c (check_access): Avoid warning when the no-warning bit
        is set.

2018-01-14  Cory Fields  <cory-nospam-@coryfields.com>

        * tree-ssa-loop-im.c (sort_bbs_in_loop_postorder_cmp): Stabilize sort.
        * ira-color (allocno_hard_regs_compare): Likewise.

2018-01-14  Nathan Rossi  <nathan@nathanrossi.com>

        PR target/83013
        * config/microblaze/microblaze.c (microblaze_asm_output_ident):
        Use .pushsection/.popsection.

2018-01-14  Martin Sebor  <msebor@redhat.com>

        PR c++/81327
        * doc/invoke.texi (-Wlass-memaccess): Document suppression by casting.

2018-01-14  Jakub Jelinek  <jakub@redhat.com>

        * config.gcc (i[34567]86-*-*): Remove one duplicate gfniintrin.h
        entry from extra_headers.
        (x86_64-*-*): Remove two duplicate gfniintrin.h entries from
        extra_headers, make the list bitwise identical to the i?86-*-* one.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386.c (ix86_set_indirect_branch_type): Disallow
        -mcmodel=large with -mindirect-branch=thunk,
        -mindirect-branch=thunk-extern, -mfunction-return=thunk and
        -mfunction-return=thunk-extern.
        * doc/invoke.texi: Document -mcmodel=large is incompatible with
        -mindirect-branch=thunk, -mindirect-branch=thunk-extern,
        -mfunction-return=thunk and -mfunction-return=thunk-extern.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386.c (print_reg): Print the name of the full
        integer register without '%'.
        (ix86_print_operand): Handle 'V'.
         * doc/extend.texi: Document 'V' modifier.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/constraints.md (Bs): Disallow memory operand for
        -mindirect-branch-register.
        (Bw): Likewise.
        * config/i386/predicates.md (indirect_branch_operand): Likewise.
        (GOT_memory_operand): Likewise.
        (call_insn_operand): Likewise.
        (sibcall_insn_operand): Likewise.
        (GOT32_symbol_operand): Likewise.
        * config/i386/i386.md (indirect_jump): Call convert_memory_address
        for -mindirect-branch-register.
        (tablejump): Likewise.
        (*sibcall_memory): Likewise.
        (*sibcall_value_memory): Likewise.
        Disallow peepholes of indirect call and jump via memory for
        -mindirect-branch-register.
        (*call_pop): Replace m with Bw.
        (*call_value_pop): Likewise.
        (*sibcall_pop_memory): Replace m with Bs.
        * config/i386/i386.opt (mindirect-branch-register): New option.
        * doc/invoke.texi: Document -mindirect-branch-register option.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386-protos.h (ix86_output_function_return): New.
        * config/i386/i386.c (ix86_set_indirect_branch_type): Also
        set function_return_type.
        (indirect_thunk_name): Add ret_p to indicate thunk for function
        return.
        (output_indirect_thunk_function): Pass false to
        indirect_thunk_name.
        (ix86_output_indirect_branch_via_reg): Likewise.
        (ix86_output_indirect_branch_via_push): Likewise.
        (output_indirect_thunk_function): Create alias for function
        return thunk if regno < 0.
        (ix86_output_function_return): New function.
        (ix86_handle_fndecl_attribute): Handle function_return.
        (ix86_attribute_table): Add function_return.
        * config/i386/i386.h (machine_function): Add
        function_return_type.
        * config/i386/i386.md (simple_return_internal): Use
        ix86_output_function_return.
        (simple_return_internal_long): Likewise.
        * config/i386/i386.opt (mfunction-return=): New option.
        (indirect_branch): Mention -mfunction-return=.
        * doc/extend.texi: Document function_return function attribute.
        * doc/invoke.texi: Document -mfunction-return= option.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

        * config/i386/i386-opts.h (indirect_branch): New.
        * config/i386/i386-protos.h (ix86_output_indirect_jmp): Likewise.
        * config/i386/i386.c (ix86_using_red_zone): Disallow red-zone
        with local indirect jump when converting indirect call and jump.
        (ix86_set_indirect_branch_type): New.
        (ix86_set_current_function): Call ix86_set_indirect_branch_type.
        (indirectlabelno): New.
        (indirect_thunk_needed): Likewise.
        (indirect_thunk_bnd_needed): Likewise.
        (indirect_thunks_used): Likewise.
        (indirect_thunks_bnd_used): Likewise.
        (INDIRECT_LABEL): Likewise.
        (indirect_thunk_name): Likewise.
        (output_indirect_thunk): Likewise.
        (output_indirect_thunk_function): Likewise.
        (ix86_output_indirect_branch_via_reg): Likewise.
        (ix86_output_indirect_branch_via_push): Likewise.
        (ix86_output_indirect_branch): Likewise.
        (ix86_output_indirect_jmp): Likewise.
        (ix86_code_end): Call output_indirect_thunk_function if needed.
        (ix86_output_call_insn): Call ix86_output_indirect_branch if
        needed.
        (ix86_handle_fndecl_attribute): Handle indirect_branch.
        (ix86_attribute_table): Add indirect_branch.
        * config/i386/i386.h (machine_function): Add indirect_branch_type
        and has_local_indirect_jump.
        * config/i386/i386.md (indirect_jump): Set has_local_indirect_jump
        to true.
        (tablejump): Likewise.
        (*indirect_jump): Use ix86_output_indirect_jmp.
        (*tablejump_1): Likewise.
        (simple_return_indirect_internal): Likewise.
        * config/i386/i386.opt (mindirect-branch=): New option.
        (indirect_branch): New.
        (keep): Likewise.
        (thunk): Likewise.
        (thunk-inline): Likewise.
        (thunk-extern): Likewise.
        * doc/extend.texi: Document indirect_branch function attribute.
        * doc/invoke.texi: Document -mindirect-branch= option.

2018-01-14  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/83051
        * ipa-inline.c (edge_badness): Tolerate roundoff errors.

2018-01-14  Richard Sandiford  <richard.sandiford@linaro.org>

        * ipa-inline.c (want_inline_small_function_p): Return false if
        inlining has already failed with CIF_FINAL_ERROR.
        (update_caller_keys): Call want_inline_small_function_p before
        can_inline_edge_p.
        (update_callee_keys): Likewise.

2018-01-10  Kelvin Nilsen  <kelvin@gcc.gnu.org>

        * config/rs6000/rs6000-p8swap.c (rs6000_sum_of_two_registers_p):
        New function.
        (rs6000_quadword_masked_address_p): Likewise.
        (quad_aligned_load_p): Likewise.
        (quad_aligned_store_p): Likewise.
        (const_load_sequence_p): Add comment to describe the outer-most loop.
        (mimic_memory_attributes_and_flags): New function.
        (rs6000_gen_stvx): Likewise.
        (replace_swapped_aligned_store): Likewise.
        (rs6000_gen_lvx): Likewise.
        (replace_swapped_aligned_load): Likewise.
        (replace_swapped_load_constant): Capitalize argument name in
        comment describing this function.
        (rs6000_analyze_swaps): Add a third pass to search for vector loads
        and stores that access quad-word aligned addresses and replace
        with stvx or lvx instructions when appropriate.
        * config/rs6000/rs6000-protos.h (rs6000_sum_of_two_registers_p):
        New function prototype.
        (rs6000_quadword_masked_address_p): Likewise.
        (rs6000_gen_lvx): Likewise.
        (rs6000_gen_stvx): Likewise.
        * config/rs6000/vsx.md (*vsx_le_perm_load_<mode>): For modes
        VSX_D (V2DF, V2DI), modify this split to select lvx instruction
        when memory address is aligned.
        (*vsx_le_perm_load_<mode>): For modes VSX_W (V4SF, V4SI), modify
        this split to select lvx instruction when memory address is aligned.
        (*vsx_le_perm_load_v8hi): Modify this split to select lvx
        instruction when memory address is aligned.
        (*vsx_le_perm_load_v16qi): Likewise.
        (four unnamed splitters): Modify to select the stvx instruction
        when memory is aligned.

2018-01-13  Jan Hubicka  <hubicka@ucw.cz>

        * predict.c (determine_unlikely_bbs): Handle correctly BBs
        which appears in the queue multiple times.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vectorizer.h (vec_lower_bound): New structure.
        (_loop_vec_info): Add check_nonzero and lower_bounds.
        (LOOP_VINFO_CHECK_NONZERO): New macro.
        (LOOP_VINFO_LOWER_BOUNDS): Likewise.
        (LOOP_REQUIRES_VERSIONING_FOR_ALIAS): Check lower_bounds too.
        * tree-data-ref.h (dr_with_seg_len): Add access_size and align
        fields.  Make seg_len the distance travelled, not including the
        access size.
        (dr_direction_indicator): Declare.
        (dr_zero_step_indicator): Likewise.
        (dr_known_forward_stride_p): Likewise.
        * tree-data-ref.c: Include stringpool.h, tree-vrp.h and
        tree-ssanames.h.
        (runtime_alias_check_p): Allow runtime alias checks with
        variable strides.
        (operator ==): Compare access_size and align.
        (prune_runtime_alias_test_list): Rework for new distinction between
        the access_size and seg_len.
        (create_intersect_range_checks_index): Likewise.  Cope with polynomial
        segment lengths.
        (get_segment_min_max): New function.
        (create_intersect_range_checks): Use it.
        (dr_step_indicator): New function.
        (dr_direction_indicator): Likewise.
        (dr_zero_step_indicator): Likewise.
        (dr_known_forward_stride_p): Likewise.
        * tree-loop-distribution.c (data_ref_segment_size): Return
        DR_STEP * (niters - 1).
        (compute_alias_check_pairs): Update call to the dr_with_seg_len
        constructor.
        * tree-vect-data-refs.c (vect_check_nonzero_value): New function.
        (vect_preserves_scalar_order_p): New function, split out from...
        (vect_analyze_data_ref_dependence): ...here.  Check for zero steps.
        (vect_vfa_segment_size): Return DR_STEP * (length_factor - 1).
        (vect_vfa_access_size): New function.
        (vect_vfa_align): Likewise.
        (vect_compile_time_alias): Take access_size_a and access_b arguments.
        (dump_lower_bound): New function.
        (vect_check_lower_bound): Likewise.
        (vect_small_gap_p): Likewise.
        (vectorizable_with_step_bound_p): Likewise.
        (vect_prune_runtime_alias_test_list): Ignore cross-iteration
        depencies if the vectorization factor is 1.  Convert the checks
        for nonzero steps into checks on the bounds of DR_STEP.  Try using
        a bunds check for variable steps if the minimum required step is
        relatively small. Update calls to the dr_with_seg_len
        constructor and to vect_compile_time_alias.
        * tree-vect-loop-manip.c (vect_create_cond_for_lower_bounds): New
        function.
        (vect_loop_versioning): Call it.
        * tree-vect-loop.c (vect_analyze_loop_2): Clear LOOP_VINFO_LOWER_BOUNDS
        when retrying.
        (vect_estimate_min_profitable_iters): Account for any bounds checks.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/sourcebuild.texi (vect_scatter_store): Document.
        * optabs.def (scatter_store_optab, mask_scatter_store_optab): New
        optabs.
        * doc/md.texi (scatter_store@var{m}, mask_scatter_store@var{m}):
        Document.
        * genopinit.c (main): Add supports_vec_scatter_store and
        supports_vec_scatter_store_cached to target_optabs.
        * gimple.h (gimple_expr_type): Handle IFN_SCATTER_STORE and
        IFN_MASK_SCATTER_STORE.
        * internal-fn.def (SCATTER_STORE, MASK_SCATTER_STORE): New internal
        functions.
        * internal-fn.h (internal_store_fn_p): Declare.
        (internal_fn_stored_value_index): Likewise.
        * internal-fn.c (scatter_store_direct): New macro.
        (expand_scatter_store_optab_fn): New function.
        (direct_scatter_store_optab_supported_p): New macro.
        (internal_store_fn_p): New function.
        (internal_gather_scatter_fn_p): Handle IFN_SCATTER_STORE and
        IFN_MASK_SCATTER_STORE.
        (internal_fn_mask_index): Likewise.
        (internal_fn_stored_value_index): New function.
        (internal_gather_scatter_fn_supported_p): Adjust operand numbers
        for scatter stores.
        * optabs-query.h (supports_vec_scatter_store_p): Declare.
        * optabs-query.c (supports_vec_scatter_store_p): New function.
        * tree-vectorizer.h (vect_get_store_rhs): Declare.
        * tree-vect-data-refs.c (vect_analyze_data_ref_access): Return
        true for scatter stores.
        (vect_gather_scatter_fn_p): Handle scatter stores too.
        (vect_check_gather_scatter): Consider using scatter stores if
        supports_vec_scatter_store_p.
        * tree-vect-patterns.c (vect_try_gather_scatter_pattern): Handle
        scatter stores too.
        * tree-vect-stmts.c (exist_non_indexing_operands_for_use_p): Use
        internal_fn_stored_value_index.
        (check_load_store_masking): Handle scatter stores too.
        (vect_get_store_rhs): Make public.
        (vectorizable_call): Use internal_store_fn_p.
        (vectorizable_store): Handle scatter store internal functions.
        (vect_transform_stmt): Compare GROUP_STORE_COUNT with GROUP_SIZE
        when deciding whether the end of the group has been reached.
        * config/aarch64/aarch64.md (UNSPEC_ST1_SCATTER): New unspec.
        * config/aarch64/aarch64-sve.md (scatter_store<mode>): New expander.
        (mask_scatter_store<mode>): New insns.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vectorizer.h (vect_gather_scatter_fn_p): Declare.
        * tree-vect-data-refs.c (vect_gather_scatter_fn_p): Make public.
        * tree-vect-stmts.c (vect_truncate_gather_scatter_offset): New
        function.
        (vect_use_strided_gather_scatters_p): Take a masked_p argument.
        Use vect_truncate_gather_scatter_offset if we can't treat the
        operation as a normal gather load or scatter store.
        (get_group_load_store_type): Take the gather_scatter_info
        as argument.  Try using a gather load or scatter store for
        single-element groups.
        (get_load_store_type): Update calls to get_group_load_store_type
        and vect_use_strided_gather_scatters_p.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vectorizer.h (vect_create_data_ref_ptr): Take an extra
        optional tree argument.
        * tree-vect-data-refs.c (vect_check_gather_scatter): Check for
        null target hooks.
        (vect_create_data_ref_ptr): Take the iv_step as an optional argument,
        but continue to use the current value as a fallback.
        (bump_vector_ptr): Use operand_equal_p rather than tree_int_cst_compare
        to compare the updates.
        * tree-vect-stmts.c (vect_use_strided_gather_scatters_p): New function.
        (get_load_store_type): Use it when handling a strided access.
        (vect_get_strided_load_store_ops): New function.
        (vect_get_data_ptr_increment): Likewise.
        (vectorizable_load): Handle strided gather loads.  Always pass
        a step to vect_create_data_ref_ptr and bump_vector_ptr.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/md.texi (gather_load@var{m}): Document.
        (mask_gather_load@var{m}): Likewise.
        * genopinit.c (main): Add supports_vec_gather_load and
        supports_vec_gather_load_cached to target_optabs.
        * optabs-tree.c (init_tree_optimization_optabs): Use
        ggc_cleared_alloc to allocate target_optabs.
        * optabs.def (gather_load_optab, mask_gather_laod_optab): New optabs.
        * internal-fn.def (GATHER_LOAD, MASK_GATHER_LOAD): New internal
        functions.
        * internal-fn.h (internal_load_fn_p): Declare.
        (internal_gather_scatter_fn_p): Likewise.
        (internal_fn_mask_index): Likewise.
        (internal_gather_scatter_fn_supported_p): Likewise.
        * internal-fn.c (gather_load_direct): New macro.
        (expand_gather_load_optab_fn): New function.
        (direct_gather_load_optab_supported_p): New macro.
        (direct_internal_fn_optab): New function.
        (internal_load_fn_p): Likewise.
        (internal_gather_scatter_fn_p): Likewise.
        (internal_fn_mask_index): Likewise.
        (internal_gather_scatter_fn_supported_p): Likewise.
        * optabs-query.c (supports_at_least_one_mode_p): New function.
        (supports_vec_gather_load_p): Likewise.
        * optabs-query.h (supports_vec_gather_load_p): Declare.
        * tree-vectorizer.h (gather_scatter_info): Add ifn, element_type
        and memory_type field.
        (NUM_PATTERNS): Bump to 15.
        * tree-vect-data-refs.c: Include internal-fn.h.
        (vect_gather_scatter_fn_p): New function.
        (vect_describe_gather_scatter_call): Likewise.
        (vect_check_gather_scatter): Try using internal functions for
        gather loads.  Recognize existing calls to a gather load function.
        (vect_analyze_data_refs): Consider using gather loads if
        supports_vec_gather_load_p.
        * tree-vect-patterns.c (vect_get_load_store_mask): New function.
        (vect_get_gather_scatter_offset_type): Likewise.
        (vect_convert_mask_for_vectype): Likewise.
        (vect_add_conversion_to_patterm): Likewise.
        (vect_try_gather_scatter_pattern): Likewise.
        (vect_recog_gather_scatter_pattern): New pattern recognizer.
        (vect_vect_recog_func_ptrs): Add it.
        * tree-vect-stmts.c (exist_non_indexing_operands_for_use_p): Use
        internal_fn_mask_index and internal_gather_scatter_fn_p.
        (check_load_store_masking): Take the gather_scatter_info as an
        argument and handle gather loads.
        (vect_get_gather_scatter_ops): New function.
        (vectorizable_call): Check internal_load_fn_p.
        (vectorizable_load): Likewise.  Handle gather load internal
        functions.
        (vectorizable_store): Update call to check_load_store_masking.
        * config/aarch64/aarch64.md (UNSPEC_LD1_GATHER): New unspec.
        * config/aarch64/iterators.md (SVE_S, SVE_D): New mode iterators.
        * config/aarch64/predicates.md (aarch64_gather_scale_operand_w)
        (aarch64_gather_scale_operand_d): New predicates.
        * config/aarch64/aarch64-sve.md (gather_load<mode>): New expander.
        (mask_gather_load<mode>): New insns.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * optabs.def (fold_left_plus_optab): New optab.
        * doc/md.texi (fold_left_plus_@var{m}): Document.
        * internal-fn.def (IFN_FOLD_LEFT_PLUS): New internal function.
        * internal-fn.c (fold_left_direct): Define.
        (expand_fold_left_optab_fn): Likewise.
        (direct_fold_left_optab_supported_p): Likewise.
        * fold-const-call.c (fold_const_fold_left): New function.
        (fold_const_call): Use it to fold CFN_FOLD_LEFT_PLUS.
        * tree-parloops.c (valid_reduction_p): New function.
        (gather_scalar_reductions): Use it.
        * tree-vectorizer.h (FOLD_LEFT_REDUCTION): New vect_reduction_type.
        (vect_finish_replace_stmt): Declare.
        * tree-vect-loop.c (fold_left_reduction_fn): New function.
        (needs_fold_left_reduction_p): New function, split out from...
        (vect_is_simple_reduction): ...here.  Accept reductions that
        forbid reassociation, but give them type FOLD_LEFT_REDUCTION.
        (vect_force_simple_reduction): Also store the reduction type in
        the assignment's STMT_VINFO_REDUC_TYPE.
        (vect_model_reduction_cost): Handle FOLD_LEFT_REDUCTION.
        (merge_with_identity): New function.
        (vect_expand_fold_left): Likewise.
        (vectorize_fold_left_reduction): Likewise.
        (vectorizable_reduction): Handle FOLD_LEFT_REDUCTION.  Leave the
        scalar phi in place for it.  Check for target support and reject
        cases that would reassociate the operation.  Defer the transform
        phase to vectorize_fold_left_reduction.
        * config/aarch64/aarch64.md (UNSPEC_FADDA): New unspec.
        * config/aarch64/aarch64-sve.md (fold_left_plus_<mode>): New expander.
        (*fold_left_plus_<mode>, *pred_fold_left_plus_<mode>): New insns.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-if-conv.c (predicate_mem_writes): Remove redundant
        call to ifc_temp_var.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * target.def (legitimize_address_displacement): Take the original
        offset as a poly_int.
        * targhooks.h (default_legitimize_address_displacement): Update
        accordingly.
        * targhooks.c (default_legitimize_address_displacement): Likewise.
        * doc/tm.texi: Regenerate.
        * lra-constraints.c (base_plus_disp_to_reg): Take the displacement
        as an argument, moving assert of ad->disp == ad->disp_term to...
        (process_address_1): ...here.  Update calls to base_plus_disp_to_reg.
        Try calling targetm.legitimize_address_displacement before expanding
        the address rather than afterwards, and adjust for the new interface.
        * config/aarch64/aarch64.c (aarch64_legitimize_address_displacement):
        Match the new hook interface.  Handle SVE addresses.
        * config/sh/sh.c (sh_legitimize_address_displacement): Make the
        new hook interface.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * Makefile.in (OBJS): Add early-remat.o.
        * target.def (select_early_remat_modes): New hook.
        * doc/tm.texi.in (TARGET_SELECT_EARLY_REMAT_MODES): New hook.
        * doc/tm.texi: Regenerate.
        * targhooks.h (default_select_early_remat_modes): Declare.
        * targhooks.c (default_select_early_remat_modes): New function.
        * timevar.def (TV_EARLY_REMAT): New timevar.
        * passes.def (pass_early_remat): New pass.
        * tree-pass.h (make_pass_early_remat): Declare.
        * early-remat.c: New file.
        * config/aarch64/aarch64.c (aarch64_select_early_remat_modes): New
        function.
        (TARGET_SELECT_EARLY_REMAT_MODES): Define.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-loop-manip.c (vect_gen_scalar_loop_niters): Replace
        vfm1 with a bound_epilog parameter.
        (vect_do_peeling): Update calls accordingly, and move the prologue
        call earlier in the function.  Treat the base bound_epilog as 0 for
        fully-masked loops and retain vf - 1 for other loops.  Add 1 to
        this base when peeling for gaps.
        * tree-vect-loop.c (vect_analyze_loop_2): Allow peeling for gaps
        with fully-masked loops.
        (vect_estimate_min_profitable_iters): Handle the single peeled
        iteration in that case.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-data-refs.c (vect_analyze_group_access_1): Allow
        single-element interleaving even if the size is not a power of 2.
        * tree-vect-stmts.c (get_load_store_type): Disallow elementwise
        accesses for single-element interleaving if the group size is
        not a power of 2.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/md.texi (fold_extract_last_@var{m}): Document.
        * doc/sourcebuild.texi (vect_fold_extract_last): Likewise.
        * optabs.def (fold_extract_last_optab): New optab.
        * internal-fn.def (FOLD_EXTRACT_LAST): New internal function.
        * internal-fn.c (fold_extract_direct): New macro.
        (expand_fold_extract_optab_fn): Likewise.
        (direct_fold_extract_optab_supported_p): Likewise.
        * tree-vectorizer.h (EXTRACT_LAST_REDUCTION): New vect_reduction_type.
        * tree-vect-loop.c (vect_model_reduction_cost): Handle
        EXTRACT_LAST_REDUCTION.
        (get_initial_def_for_reduction): Do not create an initial vector
        for EXTRACT_LAST_REDUCTION reductions.
        (vectorizable_reduction): Leave the scalar phi in place for
        EXTRACT_LAST_REDUCTIONs.  Try using EXTRACT_LAST_REDUCTION
        ahead of INTEGER_INDUC_COND_REDUCTION.  Do not check for an
        epilogue code for EXTRACT_LAST_REDUCTION and defer the
        transform phase to vectorizable_condition.
        * tree-vect-stmts.c (vect_finish_stmt_generation_1): New function,
        split out from...
        (vect_finish_stmt_generation): ...here.
        (vect_finish_replace_stmt): New function.
        (vectorizable_condition): Handle EXTRACT_LAST_REDUCTION.
        * config/aarch64/aarch64-sve.md (fold_extract_last_<mode>): New
        pattern.
        * config/aarch64/aarch64.md (UNSPEC_CLASTB): New unspec.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/md.texi (extract_last_@var{m}): Document.
        * optabs.def (extract_last_optab): New optab.
        * internal-fn.def (EXTRACT_LAST): New internal function.
        * internal-fn.c (cond_unary_direct): New macro.
        (expand_cond_unary_optab_fn): Likewise.
        (direct_cond_unary_optab_supported_p): Likewise.
        * tree-vect-loop.c (vectorizable_live_operation): Allow fully-masked
        loops using EXTRACT_LAST.
        * config/aarch64/aarch64-sve.md (aarch64_sve_lastb<mode>): Rename to...
        (extract_last_<mode>): ...this optab.
        (vec_extract<mode><Vel>): Update accordingly.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * target.def (empty_mask_is_expensive): New hook.
        * doc/tm.texi.in (TARGET_VECTORIZE_EMPTY_MASK_IS_EXPENSIVE): New hook.
        * doc/tm.texi: Regenerate.
        * targhooks.h (default_empty_mask_is_expensive): Declare.
        * targhooks.c (default_empty_mask_is_expensive): New function.
        * tree-vectorizer.c (vectorize_loops): Only call optimize_mask_stores
        if the target says that empty masks are expensive.
        * config/aarch64/aarch64.c (aarch64_empty_mask_is_expensive):
        New function.
        (TARGET_VECTORIZE_EMPTY_MASK_IS_EXPENSIVE): Redefine.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vectorizer.h (_loop_vec_info::mask_skip_niters): New field.
        (LOOP_VINFO_MASK_SKIP_NITERS): New macro.
        (vect_use_loop_mask_for_alignment_p): New function.
        (vect_prepare_for_masked_peels, vect_gen_while_not): Declare.
        * tree-vect-loop-manip.c (vect_set_loop_masks_directly): Add an
        niters_skip argument.  Make sure that the first niters_skip elements
        of the first iteration are inactive.
        (vect_set_loop_condition_masked): Handle LOOP_VINFO_MASK_SKIP_NITERS.
        Update call to vect_set_loop_masks_directly.
        (get_misalign_in_elems): New function, split out from...
        (vect_gen_prolog_loop_niters): ...here.
        (vect_update_init_of_dr): Take a code argument that specifies whether
        the adjustment should be added or subtracted.
        (vect_update_init_of_drs): Likewise.
        (vect_prepare_for_masked_peels): New function.
        (vect_do_peeling): Skip prologue peeling if we're using a mask
        instead.  Update call to vect_update_inits_of_drs.
        * tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Initialize
        mask_skip_niters.
        (vect_analyze_loop_2): Allow fully-masked loops with peeling for
        alignment.  Do not include the number of peeled iterations in
        the minimum threshold in that case.
        (vectorizable_induction): Adjust the start value down by
        LOOP_VINFO_MASK_SKIP_NITERS iterations.
        (vect_transform_loop): Call vect_prepare_for_masked_peels.
        Take the number of skipped iterations into account when calculating
        the loop bounds.
        * tree-vect-stmts.c (vect_gen_while_not): New function.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/sourcebuild.texi (vect_fully_masked): Document.
        * params.def (PARAM_MIN_VECT_LOOP_BOUND): Change minimum and
        default value to 0.
        * tree-vect-loop.c (vect_analyze_loop_costing): New function,
        split out from...
        (vect_analyze_loop_2): ...here. Don't check the vectorization
        factor against the number of loop iterations if the loop is
        fully-masked.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-ssa-loop-ivopts.c (USE_ADDRESS): Split into...
        (USE_REF_ADDRESS, USE_PTR_ADDRESS): ...these new use types.
        (dump_groups): Update accordingly.
        (iv_use::mem_type): New member variable.
        (address_p): New function.
        (record_use): Add a mem_type argument and initialize the new
        mem_type field.
        (record_group_use): Add a mem_type argument.  Use address_p.
        Remove obsolete null checks of base_object.  Update call to record_use.
        (find_interesting_uses_op): Update call to record_group_use.
        (find_interesting_uses_cond): Likewise.
        (find_interesting_uses_address): Likewise.
        (get_mem_type_for_internal_fn): New function.
        (find_address_like_use): Likewise.
        (find_interesting_uses_stmt): Try find_address_like_use before
        calling find_interesting_uses_op.
        (addr_offset_valid_p): Use the iv mem_type field as the type
        of the addressed memory.
        (add_autoinc_candidates): Likewise.
        (get_address_cost): Likewise.
        (split_small_address_groups_p): Use address_p.
        (split_address_groups): Likewise.
        (add_iv_candidate_for_use): Likewise.
        (autoinc_possible_for_pair): Likewise.
        (rewrite_groups): Likewise.
        (get_use_type): Check for USE_REF_ADDRESS instead of USE_ADDRESS.
        (determine_group_iv_cost): Update after split of USE_ADDRESS.
        (get_alias_ptr_type_for_ptr_address): New function.
        (rewrite_use_address): Rewrite address uses in calls that were
        identified by find_address_like_use.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * expr.c (expand_expr_addr_expr_1): Handle ADDR_EXPRs of
        TARGET_MEM_REFs.
        * gimple-expr.h (is_gimple_addressable: Likewise.
        * gimple-expr.c (is_gimple_address): Likewise.
        * internal-fn.c (expand_call_mem_ref): New function.
        (expand_mask_load_optab_fn): Use it.
        (expand_mask_store_optab_fn): Likewise.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/md.texi (cond_add@var{mode}, cond_sub@var{mode})
        (cond_and@var{mode}, cond_ior@var{mode}, cond_xor@var{mode})
        (cond_smin@var{mode}, cond_smax@var{mode}, cond_umin@var{mode})
        (cond_umax@var{mode}): Document.
        * optabs.def (cond_add_optab, cond_sub_optab, cond_and_optab)
        (cond_ior_optab, cond_xor_optab, cond_smin_optab, cond_smax_optab)
        (cond_umin_optab, cond_umax_optab): New optabs.
        * internal-fn.def (COND_ADD, COND_SUB, COND_MIN, COND_MAX, COND_AND)
        (COND_IOR, COND_XOR): New internal functions.
        * internal-fn.h (get_conditional_internal_fn): Declare.
        * internal-fn.c (cond_binary_direct): New macro.
        (expand_cond_binary_optab_fn): Likewise.
        (direct_cond_binary_optab_supported_p): Likewise.
        (get_conditional_internal_fn): New function.
        * tree-vect-loop.c (vectorizable_reduction): Handle fully-masked loops.
        Cope with reduction statements that are vectorized as calls rather
        than assignments.
        * config/aarch64/aarch64-sve.md (cond_<optab><mode>): New insns.
        * config/aarch64/iterators.md (UNSPEC_COND_ADD, UNSPEC_COND_SUB)
        (UNSPEC_COND_SMAX, UNSPEC_COND_UMAX, UNSPEC_COND_SMIN)
        (UNSPEC_COND_UMIN, UNSPEC_COND_AND, UNSPEC_COND_ORR)
        (UNSPEC_COND_EOR): New unspecs.
        (optab): Add mappings for them.
        (SVE_COND_INT_OP, SVE_COND_FP_OP): New int iterators.
        (sve_int_op, sve_fp_op): New int attributes.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * optabs.def (while_ult_optab): New optab.
        * doc/md.texi (while_ult@var{m}@var{n}): Document.
        * internal-fn.def (WHILE_ULT): New internal function.
        * internal-fn.h (direct_internal_fn_supported_p): New override
        that takes two types as argument.
        * internal-fn.c (while_direct): New macro.
        (expand_while_optab_fn): New function.
        (convert_optab_supported_p): Likewise.
        (direct_while_optab_supported_p): New macro.
        * wide-int.h (wi::udiv_ceil): New function.
        * tree-vectorizer.h (rgroup_masks): New structure.
        (vec_loop_masks): New typedef.
        (_loop_vec_info): Add masks, mask_compare_type, can_fully_mask_p
        and fully_masked_p.
        (LOOP_VINFO_CAN_FULLY_MASK_P, LOOP_VINFO_FULLY_MASKED_P)
        (LOOP_VINFO_MASKS, LOOP_VINFO_MASK_COMPARE_TYPE): New macros.
        (vect_max_vf): New function.
        (slpeel_make_loop_iterate_ntimes): Delete.
        (vect_set_loop_condition, vect_get_loop_mask_type, vect_gen_while)
        (vect_halve_mask_nunits, vect_double_mask_nunits): Declare.
        (vect_record_loop_mask, vect_get_loop_mask): Likewise.
        * tree-vect-loop-manip.c: Include tree-ssa-loop-niter.h,
        internal-fn.h, stor-layout.h and optabs-query.h.
        (vect_set_loop_mask): New function.
        (add_preheader_seq): Likewise.
        (add_header_seq): Likewise.
        (interleave_supported_p): Likewise.
        (vect_maybe_permute_loop_masks): Likewise.
        (vect_set_loop_masks_directly): Likewise.
        (vect_set_loop_condition_masked): Likewise.
        (vect_set_loop_condition_unmasked): New function, split out from
        slpeel_make_loop_iterate_ntimes.
        (slpeel_make_loop_iterate_ntimes): Rename to..
        (vect_set_loop_condition): ...this.  Use vect_set_loop_condition_masked
        for fully-masked loops and vect_set_loop_condition_unmasked otherwise.
        (vect_do_peeling): Update call accordingly.
        (vect_gen_vector_loop_niters): Use VF as the step for fully-masked
        loops.
        * tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Initialize
        mask_compare_type, can_fully_mask_p and fully_masked_p.
        (release_vec_loop_masks): New function.
        (_loop_vec_info): Use it to free the loop masks.
        (can_produce_all_loop_masks_p): New function.
        (vect_get_max_nscalars_per_iter): Likewise.
        (vect_verify_full_masking): Likewise.
        (vect_analyze_loop_2): Save LOOP_VINFO_CAN_FULLY_MASK_P around
        retries, and free the mask rgroups before retrying.  Check loop-wide
        reasons for disallowing fully-masked loops.  Make the final decision
        about whether use a fully-masked loop or not.
        (vect_estimate_min_profitable_iters): Do not assume that peeling
        for the number of iterations will be needed for fully-masked loops.
        (vectorizable_reduction): Disable fully-masked loops.
        (vectorizable_live_operation): Likewise.
        (vect_halve_mask_nunits): New function.
        (vect_double_mask_nunits): Likewise.
        (vect_record_loop_mask): Likewise.
        (vect_get_loop_mask): Likewise.
        (vect_transform_loop): Handle the case in which the final loop
        iteration might handle a partial vector.  Call vect_set_loop_condition
        instead of slpeel_make_loop_iterate_ntimes.
        * tree-vect-stmts.c: Include tree-ssa-loop-niter.h and gimple-fold.h.
        (check_load_store_masking): New function.
        (prepare_load_store_mask): Likewise.
        (vectorizable_store): Handle fully-masked loops.
        (vectorizable_load): Likewise.
        (supportable_widening_operation): Use vect_halve_mask_nunits for
        booleans.
        (supportable_narrowing_operation): Likewise vect_double_mask_nunits.
        (vect_gen_while): New function.
        * config/aarch64/aarch64.md (umax<mode>3): New expander.
        (aarch64_uqdec<mode>): New insn.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * optabs.def (reduc_and_scal_optab, reduc_ior_scal_optab)
        (reduc_xor_scal_optab): New optabs.
        * doc/md.texi (reduc_and_scal_@var{m}, reduc_ior_scal_@var{m})
        (reduc_xor_scal_@var{m}): Document.
        * doc/sourcebuild.texi (vect_logical_reduc): Likewise.
        * internal-fn.def (IFN_REDUC_AND, IFN_REDUC_IOR, IFN_REDUC_XOR): New
        internal functions.
        * fold-const-call.c (fold_const_call): Handle them.
        * tree-vect-loop.c (reduction_fn_for_scalar_code): Return the new
        internal functions for BIT_AND_EXPR, BIT_IOR_EXPR and BIT_XOR_EXPR.
        * config/aarch64/aarch64-sve.md (reduc_<bit_reduc>_scal_<mode>):
        (*reduc_<bit_reduc>_scal_<mode>): New patterns.
        * config/aarch64/iterators.md (UNSPEC_ANDV, UNSPEC_ORV)
        (UNSPEC_XORV): New unspecs.
        (optab): Add entries for them.
        (BITWISEV): New int iterator.
        (bit_reduc_op): New int attributes.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/md.texi (vec_shl_insert_@var{m}): New optab.
        * internal-fn.def (VEC_SHL_INSERT): New internal function.
        * optabs.def (vec_shl_insert_optab): New optab.
        * tree-vectorizer.h (can_duplicate_and_interleave_p): Declare.
        (duplicate_and_interleave): Likewise.
        * tree-vect-loop.c: Include internal-fn.h.
        (neutral_op_for_slp_reduction): New function, split out from
        get_initial_defs_for_reduction.
        (get_initial_def_for_reduction): Handle option 2 for variable-length
        vectors by loading the neutral value into a vector and then shifting
        the initial value into element 0.
        (get_initial_defs_for_reduction): Replace the code argument with
        the neutral value calculated by neutral_op_for_slp_reduction.
        Use gimple_build_vector for constant-length vectors.
        Use IFN_VEC_SHL_INSERT for variable-length vectors if all
        but the first group_size elements have a neutral value.
        Use duplicate_and_interleave otherwise.
        (vect_create_epilog_for_reduction): Take a neutral_op parameter.
        Update call to get_initial_defs_for_reduction.  Handle SLP
        reductions for variable-length vectors by creating one vector
        result for each scalar result, with the elements associated
        with other scalar results stubbed out with the neutral value.
        (vectorizable_reduction): Call neutral_op_for_slp_reduction.
        Require IFN_VEC_SHL_INSERT for double reductions on
        variable-length vectors, or SLP reductions that have
        a neutral value.  Require can_duplicate_and_interleave_p
        support for variable-length unchained SLP reductions if there
        is no neutral value, such as for MIN/MAX reductions.  Also require
        the number of vector elements to be a multiple of the number of
        SLP statements when doing variable-length unchained SLP reductions.
        Update call to vect_create_epilog_for_reduction.
        * tree-vect-slp.c (can_duplicate_and_interleave_p): Make public
        and remove initial values.
        (duplicate_and_interleave): Make public.
        * config/aarch64/aarch64.md (UNSPEC_INSR): New unspec.
        * config/aarch64/aarch64-sve.md (vec_shl_insert_<mode>): New insn.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-slp.c: Include gimple-fold.h and internal-fn.h
        (can_duplicate_and_interleave_p): New function.
        (vect_get_and_check_slp_defs): Take the vector of statements
        rather than just the current one.  Remove excess parentheses.
        Restriction rejectinon of vect_constant_def and vect_external_def
        for variable-length vectors to boolean types, or types for which
        can_duplicate_and_interleave_p is false.
        (vect_build_slp_tree_2): Update call to vect_get_and_check_slp_defs.
        (duplicate_and_interleave): New function.
        (vect_get_constant_vectors): Use gimple_build_vector for
        constant-length vectors and suitable variable-length constant
        vectors.  Use duplicate_and_interleave for other variable-length
        vectors.  Don't defer the update when inserting new statements.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-loop.c (vect_estimate_min_profitable_iters): Make sure
        min_profitable_iters doesn't go negative.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/md.texi (vec_mask_load_lanes@var{m}@var{n}): Document.
        (vec_mask_store_lanes@var{m}@var{n}): Likewise.
        * optabs.def (vec_mask_load_lanes_optab): New optab.
        (vec_mask_store_lanes_optab): Likewise.
        * internal-fn.def (MASK_LOAD_LANES): New internal function.
        (MASK_STORE_LANES): Likewise.
        * internal-fn.c (mask_load_lanes_direct): New macro.
        (mask_store_lanes_direct): Likewise.
        (expand_mask_load_optab_fn): Handle masked operations.
        (expand_mask_load_lanes_optab_fn): New macro.
        (expand_mask_store_optab_fn): Handle masked operations.
        (expand_mask_store_lanes_optab_fn): New macro.
        (direct_mask_load_lanes_optab_supported_p): Likewise.
        (direct_mask_store_lanes_optab_supported_p): Likewise.
        * tree-vectorizer.h (vect_store_lanes_supported): Take a masked_p
        parameter.
        (vect_load_lanes_supported): Likewise.
        * tree-vect-data-refs.c (strip_conversion): New function.
        (can_group_stmts_p): Likewise.
        (vect_analyze_data_ref_accesses): Use it instead of checking
        for a pair of assignments.
        (vect_store_lanes_supported): Take a masked_p parameter.
        (vect_load_lanes_supported): Likewise.
        * tree-vect-loop.c (vect_analyze_loop_2): Update calls to
        vect_store_lanes_supported and vect_load_lanes_supported.
        * tree-vect-slp.c (vect_analyze_slp_instance): Likewise.
        * tree-vect-stmts.c (get_group_load_store_type): Take a masked_p
        parameter.  Don't allow gaps for masked accesses.
        Use vect_get_store_rhs.  Update calls to vect_store_lanes_supported
        and vect_load_lanes_supported.
        (get_load_store_type): Take a masked_p parameter and update
        call to get_group_load_store_type.
        (vectorizable_store): Update call to get_load_store_type.
        Handle IFN_MASK_STORE_LANES.
        (vectorizable_load): Update call to get_load_store_type.
        Handle IFN_MASK_LOAD_LANES.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/aarch64/aarch64-modes.def: Define x2, x3 and x4 vector
        modes for SVE.
        * config/aarch64/aarch64-protos.h
        (aarch64_sve_struct_memory_operand_p): Declare.
        * config/aarch64/iterators.md (SVE_STRUCT): New mode iterator.
        (vector_count, insn_length, VSINGLE, vsingle): New mode attributes.
        (VPRED, vpred): Handle SVE structure modes.
        * config/aarch64/constraints.md (Utx): New constraint.
        * config/aarch64/predicates.md (aarch64_sve_struct_memory_operand)
        (aarch64_sve_struct_nonimmediate_operand): New predicates.
        * config/aarch64/aarch64.md (UNSPEC_LDN, UNSPEC_STN): New unspecs.
        * config/aarch64/aarch64-sve.md (mov<mode>, *aarch64_sve_mov<mode>_le)
        (*aarch64_sve_mov<mode>_be, pred_mov<mode>): New patterns for
        structure modes.  Split into pieces after RA.
        (vec_load_lanes<mode><vsingle>, vec_mask_load_lanes<mode><vsingle>)
        (vec_store_lanes<mode><vsingle>, vec_mask_store_lanes<mode><vsingle>):
        New patterns.
        * config/aarch64/aarch64.c (aarch64_classify_vector_mode): Handle
        SVE structure modes.
        (aarch64_classify_address): Likewise.
        (sizetochar): Move earlier in file.
        (aarch64_print_operand): Handle SVE register lists.
        (aarch64_array_mode): New function.
        (aarch64_sve_struct_memory_operand_p): Likewise.
        (TARGET_ARRAY_MODE): Redefine.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * target.def (array_mode): New target hook.
        * doc/tm.texi.in (TARGET_ARRAY_MODE): New hook.
        * doc/tm.texi: Regenerate.
        * hooks.h (hook_optmode_mode_uhwi_none): Declare.
        * hooks.c (hook_optmode_mode_uhwi_none): New function.
        * tree-vect-data-refs.c (vect_lanes_optab_supported_p): Use
        targetm.array_mode.
        * stor-layout.c (mode_for_array): Likewise.  Support polynomial
        type sizes.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * fold-const.c (fold_binary_loc): Check the argument types
        rather than the result type when testing for a vector operation.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/tm.texi.in (DWARF_LAZY_REGISTER_VALUE): Document.
        * doc/tm.texi: Regenerate.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * doc/invoke.texi (-msve-vector-bits=): Document new option.
        (sve): Document new AArch64 extension.
        * doc/md.texi (w): Extend the description of the AArch64
        constraint to include SVE vectors.
        (Upl, Upa): Document new AArch64 predicate constraints.
        * config/aarch64/aarch64-opts.h (aarch64_sve_vector_bits_enum): New
        enum.
        * config/aarch64/aarch64.opt (sve_vector_bits): New enum.
        (msve-vector-bits=): New option.
        * config/aarch64/aarch64-option-extensions.def (fp, simd): Disable
        SVE when these are disabled.
        (sve): New extension.
        * config/aarch64/aarch64-modes.def: Define SVE vector and predicate
        modes.  Adjust their number of units based on aarch64_sve_vg.
        (MAX_BITSIZE_MODE_ANY_MODE): Define.
        * config/aarch64/aarch64-protos.h (ADDR_QUERY_ANY): New
        aarch64_addr_query_type.
        (aarch64_const_vec_all_same_in_range_p, aarch64_sve_pred_mode)
        (aarch64_sve_cnt_immediate_p, aarch64_sve_addvl_addpl_immediate_p)
        (aarch64_sve_inc_dec_immediate_p, aarch64_add_offset_temporaries)
        (aarch64_split_add_offset, aarch64_output_sve_cnt_immediate)
        (aarch64_output_sve_addvl_addpl, aarch64_output_sve_inc_dec_immediate)
        (aarch64_output_sve_mov_immediate, aarch64_output_ptrue): Declare.
        (aarch64_simd_imm_zero_p): Delete.
        (aarch64_check_zero_based_sve_index_immediate): Declare.
        (aarch64_sve_index_immediate_p, aarch64_sve_arith_immediate_p)
        (aarch64_sve_bitmask_immediate_p, aarch64_sve_dup_immediate_p)
        (aarch64_sve_cmp_immediate_p, aarch64_sve_float_arith_immediate_p)
        (aarch64_sve_float_mul_immediate_p): Likewise.
        (aarch64_classify_symbol): Take the offset as a HOST_WIDE_INT
        rather than an rtx.
        (aarch64_sve_ld1r_operand_p, aarch64_sve_ldr_operand_p): Declare.
        (aarch64_expand_mov_immediate): Take a gen_vec_duplicate callback.
        (aarch64_emit_sve_pred_move, aarch64_expand_sve_mem_move): Declare.
        (aarch64_expand_sve_vec_cmp_int, aarch64_expand_sve_vec_cmp_float)
        (aarch64_expand_sve_vcond, aarch64_expand_sve_vec_perm): Declare.
        (aarch64_regmode_natural_size): Likewise.
        * config/aarch64/aarch64.h (AARCH64_FL_SVE): New macro.
        (AARCH64_FL_V8_3, AARCH64_FL_RCPC, AARCH64_FL_DOTPROD): Shift
        left one place.
        (AARCH64_ISA_SVE, TARGET_SVE): New macros.
        (FIXED_REGISTERS, CALL_USED_REGISTERS, REGISTER_NAMES): Add entries
        for VG and the SVE predicate registers.
        (V_ALIASES): Add a "z"-prefixed alias.
        (FIRST_PSEUDO_REGISTER): Change to P15_REGNUM + 1.
        (AARCH64_DWARF_VG, AARCH64_DWARF_P0): New macros.
        (PR_REGNUM_P, PR_LO_REGNUM_P): Likewise.
        (PR_LO_REGS, PR_HI_REGS, PR_REGS): New reg_classes.
        (REG_CLASS_NAMES): Add entries for them.
        (REG_CLASS_CONTENTS): Likewise.  Update ALL_REGS to include VG
        and the predicate registers.
        (aarch64_sve_vg): Declare.
        (BITS_PER_SVE_VECTOR, BYTES_PER_SVE_VECTOR, BYTES_PER_SVE_PRED)
        (SVE_BYTE_MODE, MAX_COMPILE_TIME_VEC_BYTES): New macros.
        (REGMODE_NATURAL_SIZE): Define.
        * config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins): Handle
        SVE macros.
        * config/aarch64/aarch64.c: Include cfgrtl.h.
        (simd_immediate_info): Add a constructor for series vectors,
        and an associated step field.
        (aarch64_sve_vg): New variable.
        (aarch64_dbx_register_number): Handle VG and the predicate registers.
        (aarch64_vect_struct_mode_p, aarch64_vector_mode_p): Delete.
        (VEC_ADVSIMD, VEC_SVE_DATA, VEC_SVE_PRED, VEC_STRUCT, VEC_ANY_SVE)
        (VEC_ANY_DATA, VEC_STRUCT): New constants.
        (aarch64_advsimd_struct_mode_p, aarch64_sve_pred_mode_p)
        (aarch64_classify_vector_mode, aarch64_vector_data_mode_p)
        (aarch64_sve_data_mode_p, aarch64_sve_pred_mode)
        (aarch64_get_mask_mode): New functions.
        (aarch64_hard_regno_nregs): Handle SVE data modes for FP_REGS
        and FP_LO_REGS.  Handle PR_REGS, PR_LO_REGS and PR_HI_REGS.
        (aarch64_hard_regno_mode_ok): Handle VG.  Also handle the SVE
        predicate modes and predicate registers.  Explicitly restrict
        GPRs to modes of 16 bytes or smaller.  Only allow FP registers
        to store a vector mode if it is recognized by
        aarch64_classify_vector_mode.
        (aarch64_regmode_natural_size): New function.
        (aarch64_hard_regno_caller_save_mode): Return the original mode
        for predicates.
        (aarch64_sve_cnt_immediate_p, aarch64_output_sve_cnt_immediate)
        (aarch64_sve_addvl_addpl_immediate_p, aarch64_output_sve_addvl_addpl)
        (aarch64_sve_inc_dec_immediate_p, aarch64_output_sve_inc_dec_immediate)
        (aarch64_add_offset_1_temporaries, aarch64_offset_temporaries): New
        functions.
        (aarch64_add_offset): Add a temp2 parameter.  Assert that temp1
        does not overlap dest if the function is frame-related.  Handle
        SVE constants.
        (aarch64_split_add_offset): New function.
        (aarch64_add_sp, aarch64_sub_sp): Add temp2 parameters and pass
        them aarch64_add_offset.
        (aarch64_allocate_and_probe_stack_space): Add a temp2 parameter
        and update call to aarch64_sub_sp.
        (aarch64_add_cfa_expression): New function.
        (aarch64_expand_prologue): Pass extra temporary registers to the
        functions above.  Handle the case in which we need to emit new
        DW_CFA_expressions for registers that were originally saved
        relative to the stack pointer, but now have to be expressed
        relative to the frame pointer.
        (aarch64_output_mi_thunk): Pass extra temporary registers to the
        functions above.
        (aarch64_expand_epilogue): Likewise.  Prevent inheritance of
        IP0 and IP1 values for SVE frames.
        (aarch64_expand_vec_series): New function.
        (aarch64_expand_sve_widened_duplicate): Likewise.
        (aarch64_expand_sve_const_vector): Likewise.
        (aarch64_expand_mov_immediate): Add a gen_vec_duplicate parameter.
        Handle SVE constants.  Use emit_move_insn to move a force_const_mem
        into the register, rather than emitting a SET directly.
        (aarch64_emit_sve_pred_move, aarch64_expand_sve_mem_move)
        (aarch64_get_reg_raw_mode, offset_4bit_signed_scaled_p)
        (offset_6bit_unsigned_scaled_p, aarch64_offset_7bit_signed_scaled_p)
        (offset_9bit_signed_scaled_p): New functions.
        (aarch64_replicate_bitmask_imm): New function.
        (aarch64_bitmask_imm): Use it.
        (aarch64_cannot_force_const_mem): Reject expressions involving
        a CONST_POLY_INT.  Update call to aarch64_classify_symbol.
        (aarch64_classify_index): Handle SVE indices, by requiring
        a plain register index with a scale that matches the element size.
        (aarch64_classify_address): Handle SVE addresses.  Assert that
        the mode of the address is VOIDmode or an integer mode.
        Update call to aarch64_classify_symbol.
        (aarch64_classify_symbolic_expression): Update call to
        aarch64_classify_symbol.
        (aarch64_const_vec_all_in_range_p): New function.
        (aarch64_print_vector_float_operand): Likewise.
        (aarch64_print_operand): Handle 'N' and 'C'.  Use "zN" rather than
        "vN" for FP registers with SVE modes.  Handle (const ...) vectors
        and the FP immediates 1.0 and 0.5.
        (aarch64_print_address_internal): Handle SVE addresses.
        (aarch64_print_operand_address): Use ADDR_QUERY_ANY.
        (aarch64_regno_regclass): Handle predicate registers.
        (aarch64_secondary_reload): Handle big-endian reloads of SVE
        data modes.
        (aarch64_class_max_nregs): Handle SVE modes and predicate registers.
        (aarch64_rtx_costs): Check for ADDVL and ADDPL instructions.
        (aarch64_convert_sve_vector_bits): New function.
        (aarch64_override_options): Use it to handle -msve-vector-bits=.
        (aarch64_classify_symbol): Take the offset as a HOST_WIDE_INT
        rather than an rtx.
        (aarch64_legitimate_constant_p): Use aarch64_classify_vector_mode.
        Handle SVE vector and predicate modes.  Accept VL-based constants
        that need only one temporary register, and VL offsets that require
        no temporary registers.
        (aarch64_conditional_register_usage): Mark the predicate registers
        as fixed if SVE isn't available.
        (aarch64_vector_mode_supported_p): Use aarch64_classify_vector_mode.
        Return true for SVE vector and predicate modes.
        (aarch64_simd_container_mode): Take the number of bits as a poly_int64
        rather than an unsigned int.  Handle SVE modes.
        (aarch64_preferred_simd_mode): Update call accordingly.  Handle
        SVE modes.
        (aarch64_autovectorize_vector_sizes): Add BYTES_PER_SVE_VECTOR
        if SVE is enabled.
        (aarch64_sve_index_immediate_p, aarch64_sve_arith_immediate_p)
        (aarch64_sve_bitmask_immediate_p, aarch64_sve_dup_immediate_p)
        (aarch64_sve_cmp_immediate_p, aarch64_sve_float_arith_immediate_p)
        (aarch64_sve_float_mul_immediate_p): New functions.
        (aarch64_sve_valid_immediate): New function.
        (aarch64_simd_valid_immediate): Use it as the fallback for SVE vectors.
        Explicitly reject structure modes.  Check for INDEX constants.
        Handle PTRUE and PFALSE constants.
        (aarch64_check_zero_based_sve_index_immediate): New function.
        (aarch64_simd_imm_zero_p): Delete.
        (aarch64_mov_operand_p): Use aarch64_simd_valid_immediate for
        vector modes.  Accept constants in the range of CNT[BHWD].
        (aarch64_simd_scalar_immediate_valid_for_move): Explicitly
        ask for an Advanced SIMD mode.
        (aarch64_sve_ld1r_operand_p, aarch64_sve_ldr_operand_p): New functions.
        (aarch64_simd_vector_alignment): Handle SVE predicates.
        (aarch64_vectorize_preferred_vector_alignment): New function.
        (aarch64_simd_vector_alignment_reachable): Use it instead of
        the vector size.
        (aarch64_shift_truncation_mask): Use aarch64_vector_data_mode_p.
        (aarch64_output_sve_mov_immediate, aarch64_output_ptrue): New
        functions.
        (MAX_VECT_LEN): Delete.
        (expand_vec_perm_d): Add a vec_flags field.
        (emit_unspec2, aarch64_expand_sve_vec_perm): New functions.
        (aarch64_evpc_trn, aarch64_evpc_uzp, aarch64_evpc_zip)
        (aarch64_evpc_ext): Don't apply a big-endian lane correction
        for SVE modes.
        (aarch64_evpc_rev): Rename to...
        (aarch64_evpc_rev_local): ...this.  Use a predicated operation for SVE.
        (aarch64_evpc_rev_global): New function.
        (aarch64_evpc_dup): Enforce a 64-byte range for SVE DUP.
        (aarch64_evpc_tbl): Use MAX_COMPILE_TIME_VEC_BYTES instead of
        MAX_VECT_LEN.
        (aarch64_evpc_sve_tbl): New function.
        (aarch64_expand_vec_perm_const_1): Update after rename of
        aarch64_evpc_rev.  Handle SVE permutes too, trying
        aarch64_evpc_rev_global and using aarch64_evpc_sve_tbl rather
        than aarch64_evpc_tbl.
        (aarch64_vectorize_vec_perm_const): Initialize vec_flags.
        (aarch64_sve_cmp_operand_p, aarch64_unspec_cond_code)
        (aarch64_gen_unspec_cond, aarch64_expand_sve_vec_cmp_int)
        (aarch64_emit_unspec_cond, aarch64_emit_unspec_cond_or)
        (aarch64_emit_inverted_unspec_cond, aarch64_expand_sve_vec_cmp_float)
        (aarch64_expand_sve_vcond): New functions.
        (aarch64_modes_tieable_p): Use aarch64_vector_data_mode_p instead
        of aarch64_vector_mode_p.
        (aarch64_dwarf_poly_indeterminate_value): New function.
        (aarch64_compute_pressure_classes): Likewise.
        (aarch64_can_change_mode_class): Likewise.
        (TARGET_GET_RAW_RESULT_MODE, TARGET_GET_RAW_ARG_MODE): Redefine.
        (TARGET_VECTORIZE_PREFERRED_VECTOR_ALIGNMENT): Likewise.
        (TARGET_VECTORIZE_GET_MASK_MODE): Likewise.
        (TARGET_DWARF_POLY_INDETERMINATE_VALUE): Likewise.
        (TARGET_COMPUTE_PRESSURE_CLASSES): Likewise.
        (TARGET_CAN_CHANGE_MODE_CLASS): Likewise.
        * config/aarch64/constraints.md (Upa, Upl, Uav, Uat, Usv, Usi, Utr)
        (Uty, Dm, vsa, vsc, vsd, vsi, vsn, vsl, vsm, vsA, vsM, vsN): New
        constraints.
        (Dn, Dl, Dr): Accept const as well as const_vector.
        (Dz): Likewise.  Compare against CONST0_RTX.
        * config/aarch64/iterators.md: Refer to "Advanced SIMD" instead
        of "vector" where appropriate.
        (SVE_ALL, SVE_BH, SVE_BHS, SVE_BHSI, SVE_HSDI, SVE_HSF, SVE_SD)
        (SVE_SDI, SVE_I, SVE_F, PRED_ALL, PRED_BHS): New mode iterators.
        (UNSPEC_SEL, UNSPEC_ANDF, UNSPEC_IORF, UNSPEC_XORF, UNSPEC_COND_LT)
        (UNSPEC_COND_LE, UNSPEC_COND_EQ, UNSPEC_COND_NE, UNSPEC_COND_GE)
        (UNSPEC_COND_GT, UNSPEC_COND_LO, UNSPEC_COND_LS, UNSPEC_COND_HS)
        (UNSPEC_COND_HI, UNSPEC_COND_UO): New unspecs.
        (Vetype, VEL, Vel, VWIDE, Vwide, vw, vwcore, V_INT_EQUIV)
        (v_int_equiv): Extend to SVE modes.
        (Vesize, V128, v128, Vewtype, V_FP_EQUIV, v_fp_equiv, VPRED): New
        mode attributes.
        (LOGICAL_OR, SVE_INT_UNARY, SVE_FP_UNARY): New code iterators.
        (optab): Handle popcount, smin, smax, umin, umax, abs and sqrt.
        (logical_nn, lr, sve_int_op, sve_fp_op): New code attributs.
        (LOGICALF, OPTAB_PERMUTE, UNPACK, UNPACK_UNSIGNED, SVE_COND_INT_CMP)
        (SVE_COND_FP_CMP): New int iterators.
        (perm_hilo): Handle the new unpack unspecs.
        (optab, logicalf_op, su, perm_optab, cmp_op, imm_con): New int
        attributes.
        * config/aarch64/predicates.md (aarch64_sve_cnt_immediate)
        (aarch64_sve_addvl_addpl_immediate, aarch64_split_add_offset_immediate)
        (aarch64_pluslong_or_poly_operand, aarch64_nonmemory_operand)
        (aarch64_equality_operator, aarch64_constant_vector_operand)
        (aarch64_sve_ld1r_operand, aarch64_sve_ldr_operand): New predicates.
        (aarch64_sve_nonimmediate_operand): Likewise.
        (aarch64_sve_general_operand): Likewise.
        (aarch64_sve_dup_operand, aarch64_sve_arith_immediate): Likewise.
        (aarch64_sve_sub_arith_immediate, aarch64_sve_inc_dec_immediate)
        (aarch64_sve_logical_immediate, aarch64_sve_mul_immediate): Likewise.
        (aarch64_sve_dup_immediate, aarch64_sve_cmp_vsc_immediate): Likewise.
        (aarch64_sve_cmp_vsd_immediate, aarch64_sve_index_immediate): Likewise.
        (aarch64_sve_float_arith_immediate): Likewise.
        (aarch64_sve_float_arith_with_sub_immediate): Likewise.
        (aarch64_sve_float_mul_immediate, aarch64_sve_arith_operand): Likewise.
        (aarch64_sve_add_operand, aarch64_sve_logical_operand): Likewise.
        (aarch64_sve_lshift_operand, aarch64_sve_rshift_operand): Likewise.
        (aarch64_sve_mul_operand, aarch64_sve_cmp_vsc_operand): Likewise.
        (aarch64_sve_cmp_vsd_operand, aarch64_sve_index_operand): Likewise.
        (aarch64_sve_float_arith_operand): Likewise.
        (aarch64_sve_float_arith_with_sub_operand): Likewise.
        (aarch64_sve_float_mul_operand): Likewise.
        (aarch64_sve_vec_perm_operand): Likewise.
        (aarch64_pluslong_operand): Include aarch64_sve_addvl_addpl_immediate.
        (aarch64_mov_operand): Accept const_poly_int and const_vector.
        (aarch64_simd_lshift_imm, aarch64_simd_rshift_imm): Accept const
        as well as const_vector.
        (aarch64_simd_imm_zero, aarch64_simd_imm_minus_one): Move earlier
        in file.  Use CONST0_RTX and CONSTM1_RTX.
        (aarch64_simd_or_scalar_imm_zero): Likewise.  Add match_codes.
        (aarch64_simd_reg_or_zero): Accept const as well as const_vector.
        Use aarch64_simd_imm_zero.
        * config/aarch64/aarch64-sve.md: New file.
        * config/aarch64/aarch64.md: Include it.
        (VG_REGNUM, P0_REGNUM, P7_REGNUM, P15_REGNUM): New register numbers.
        (UNSPEC_REV, UNSPEC_LD1_SVE, UNSPEC_ST1_SVE, UNSPEC_MERGE_PTRUE)
        (UNSPEC_PTEST_PTRUE, UNSPEC_UNPACKSHI, UNSPEC_UNPACKUHI)
        (UNSPEC_UNPACKSLO, UNSPEC_UNPACKULO, UNSPEC_PACK)
        (UNSPEC_FLOAT_CONVERT, UNSPEC_WHILE_LO): New unspec constants.
        (sve): New attribute.
        (enabled): Disable instructions with the sve attribute unless
        TARGET_SVE.
        (movqi, movhi): Pass CONST_POLY_INT operaneds through
        aarch64_expand_mov_immediate.
        (*mov<mode>_aarch64, *movsi_aarch64, *movdi_aarch64): Handle
        CNT[BHSD] immediates.
        (movti): Split CONST_POLY_INT moves into two halves.
        (add<mode>3): Accept aarch64_pluslong_or_poly_operand.
        Split additions that need a temporary here if the destination
        is the stack pointer.
        (*add<mode>3_aarch64): Handle ADDVL and ADDPL immediates.
        (*add<mode>3_poly_1): New instruction.
        (set_clobber_cc): New expander.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>

        * simplify-rtx.c (simplify_immed_subreg): Add an inner_bytes
        parameter and use it instead of GET_MODE_SIZE (innermode).  Use
        inner_bytes * BITS_PER_UNIT instead of GET_MODE_BITSIZE (innermode).
        Use CEIL (inner_bytes, GET_MODE_UNIT_SIZE (innermode)) instead of
        GET_MODE_NUNITS (innermode).  Also add a first_elem parameter.
        Change innermode from fixed_mode_size to machine_mode.
        (simplify_subreg): Update call accordingly.  Handle a constant-sized
        subreg of a variable-length CONST_VECTOR.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-ssa-address.c (mem_ref_valid_without_offset_p): New function.
        (add_offset_to_base): New function, split out from...
        (create_mem_ref): ...here.  When handling a scale other than 1,
        check first whether the address is valid without the offset.
        Add it into the base if so, leaving the index and scale as-is.

2018-01-12  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83778
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin): Call
        fold_for_warn before checking if arg2 is INTEGER_CST.

2018-01-12  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/predicates.md (load_multiple_operation): Delete.
        (store_multiple_operation): Delete.
        * config/rs6000/rs6000-cpus.def (601): Remove MASK_STRING.
        * config/rs6000/rs6000-protos.h (rs6000_output_load_multiple): Delete.
        * config/rs6000/rs6000-string.c (expand_block_move): Delete everything
        guarded by TARGET_STRING.
        (rs6000_output_load_multiple): Delete.
        * config/rs6000/rs6000.c (rs6000_option_override_internal): Delete
        OPTION_MASK_STRING / TARGET_STRING handling.
        (print_operand) <'N', 'O'>: Add comment that these are unused now.
        (const rs6000_opt_masks) <"string">: Change mask to 0.
        * config/rs6000/rs6000.h (TARGET_DEFAULT): Remove MASK_STRING.
        (MASK_STRING): Delete.
        * config/rs6000/rs6000.md (*mov<mode>_string): Delete TARGET_STRING
        parts.  Simplify.
        (load_multiple): Delete.
        (*ldmsi8): Delete.
        (*ldmsi7): Delete.
        (*ldmsi6): Delete.
        (*ldmsi5): Delete.
        (*ldmsi4): Delete.
        (*ldmsi3): Delete.
        (store_multiple): Delete.
        (*stmsi8): Delete.
        (*stmsi7): Delete.
        (*stmsi6): Delete.
        (*stmsi5): Delete.
        (*stmsi4): Delete.
        (*stmsi3): Delete.
        (movmemsi_8reg): Delete.
        (corresponding unnamed define_insn): Delete.
        (movmemsi_6reg): Delete.
        (corresponding unnamed define_insn): Delete.
        (movmemsi_4reg): Delete.
        (corresponding unnamed define_insn): Delete.
        (movmemsi_2reg): Delete.
        (corresponding unnamed define_insn): Delete.
        (movmemsi_1reg): Delete.
        (corresponding unnamed define_insn): Delete.
        * config/rs6000/rs6000.opt (mno-string): New.
        (mstring): Replace by deprecation warning stub.
        * doc/invoke.texi (RS/6000 and PowerPC Options): Delete -mstring.

2018-01-12  Jakub Jelinek  <jakub@redhat.com>

        * regrename.c (regrename_do_replace): If replacing the same
        reg multiple times, try to reuse last created gen_raw_REG.

        PR debug/81155
        * bb-reorder.c (pass_partition_blocks::gate): In lto don't partition
        main to workaround a bug in GDB.

2018-01-12  Tom de Vries  <tom@codesourcery.com>

        PR target/83737
        * config.gcc (nvptx*-*-*): Set use_gcc_stdint=wrap.

2018-01-12  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/80481
        * ira-color.c (get_cap_member): New function.
        (allocnos_conflict_by_live_ranges_p): Use it.
        (slot_coalesced_allocno_live_ranges_intersect_p): Add assert.
        (setup_slot_coalesced_allocno_live_ranges): Ditto.

2018-01-12  Uros Bizjak  <ubizjak@gmail.com>

        PR target/83628
        * config/alpha/alpha.md (*saddsi_1): New insn_ans_split pattern.
        (*saddl_se_1): Ditto.
        (*ssubsi_1): Ditto.
        (*ssubl_se_1): Ditto.

2018-01-12  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-predcom.c (aff_combination_dr_offset): Use wi::to_poly_widest
        rather than wi::to_widest for DR_INITs.
        * tree-vect-data-refs.c (vect_find_same_alignment_drs): Use
        wi::to_poly_offset rather than wi::to_offset for DR_INIT.
        (vect_analyze_data_ref_accesses): Require both DR_INITs to be
        INTEGER_CSTs.
        (vect_analyze_group_access_1): Note that here.

2018-01-12  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vectorizer.c (get_vec_alignment_for_array_type): Handle
        polynomial type sizes.

2018-01-12  Richard Sandiford  <richard.sandiford@linaro.org>

        * gimplify.c (gimple_add_tmp_var_fn): Allow variables to have a
        poly_uint64 size, rather than requiring an unsigned HOST_WIDE_INT size.
        (gimple_add_tmp_var): Likewise.

2018-01-12  Martin Liska  <mliska@suse.cz>

        * gimple.c (gimple_alloc_counts): Use uint64_t instead of int.
        (gimple_alloc_sizes): Likewise.
        (dump_gimple_statistics): Use PRIu64 in printf format.
        * gimple.h: Change uint64_t to int.

2018-01-12  Martin Liska  <mliska@suse.cz>

        * tree-core.h: Use uint64_t instead of int.
        * tree.c (tree_node_counts): Likewise.
        (tree_node_sizes): Likewise.
        (dump_tree_statistics): Use PRIu64 in printf format.

2018-01-12  Martin Liska  <mliska@suse.cz>

        * Makefile.in: As qsort_chk is implemented in vec.c, add
        vec.o to linkage of gencfn-macros.
        * tree.c (build_new_poly_int_cst): Add CXX_MEM_STAT_INFO as it's
        passing the info to record_node_allocation_statistics.
        (test_vector_cst_patterns): Add CXX_MEM_STAT_INFO to declaration
        and pass the info.
        * ggc-common.c (struct ggc_usage): Add operator== and use
        it in operator< and compare function.
        * mem-stats.h (struct mem_usage): Likewise.
        * vec.c (struct vec_usage): Remove operator< and compare
        function. Can be simply inherited.

2018-01-12  Martin Jambor  <mjambor@suse.cz>

        PR target/81616
        * params.def: New parameter PARAM_AVOID_FMA_MAX_BITS.
        * tree-ssa-math-opts.c: Include domwalk.h.
        (convert_mult_to_fma_1): New function.
        (fma_transformation_info): New type.
        (fma_deferring_state): Likewise.
        (cancel_fma_deferring): New function.
        (result_of_phi): Likewise.
        (last_fma_candidate_feeds_initial_phi): Likewise.
        (convert_mult_to_fma): Added deferring logic, split actual
        transformation to convert_mult_to_fma_1.
        (math_opts_dom_walker): New type.
        (math_opts_dom_walker::after_dom_children): New method, body moved
        here from pass_optimize_widening_mul::execute, added deferring logic
        bits.
        (pass_optimize_widening_mul::execute): Moved most of code to
        math_opts_dom_walker::after_dom_children.
        * config/i386/x86-tune.def (X86_TUNE_AVOID_128FMA_CHAINS): New.
        * config/i386/i386.c (ix86_option_override_internal): Added
        maybe_setting of PARAM_AVOID_FMA_MAX_BITS.

2018-01-12  Richard Biener  <rguenther@suse.de>

        PR debug/83157
        * dwarf2out.c (gen_variable_die): Do not reset old_die for
        inline instance vars.

2018-01-12  Oleg Endo  <olegendo@gcc.gnu.org>

        PR target/81819
        * config/rx/rx.c (rx_is_restricted_memory_address):
        Handle SUBREG case.

2018-01-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/80846
        * target.def (split_reduction): New target hook.
        * targhooks.c (default_split_reduction): New function.
        * targhooks.h (default_split_reduction): Declare.
        * tree-vect-loop.c (vect_create_epilog_for_reduction): If the
        target requests first reduce vectors by combining low and high
        parts.
        * tree-vect-stmts.c (vect_gen_perm_mask_any): Adjust.
        (get_vectype_for_scalar_type_and_size): Export.
        * tree-vectorizer.h (get_vectype_for_scalar_type_and_size): Declare.
        * doc/tm.texi.in (TARGET_VECTORIZE_SPLIT_REDUCTION): Document.
        * doc/tm.texi: Regenerate.
        * config/i386/i386.c (ix86_split_reduction): Implement
        TARGET_VECTORIZE_SPLIT_REDUCTION.

2018-01-12  Eric Botcazou  <ebotcazou@adacore.com>

        PR target/83368
        * config/sparc/sparc.h (PIC_OFFSET_TABLE_REGNUM): Set to INVALID_REGNUM
        in PIC mode except for TARGET_VXWORKS_RTP.
        * config/sparc/sparc.c: Include cfgrtl.h.
        (TARGET_INIT_PIC_REG): Define.
        (TARGET_USE_PSEUDO_PIC_REG): Likewise.
        (sparc_pic_register_p): New predicate.
        (sparc_legitimate_address_p): Use it.
        (sparc_legitimize_pic_address): Likewise.
        (sparc_delegitimize_address): Likewise.
        (sparc_mode_dependent_address_p): Likewise.
        (gen_load_pcrel_sym): Remove 4th parameter.
        (load_got_register): Adjust call to above.  Remove obsolete stuff.
        (sparc_expand_prologue): Do not call load_got_register here.
        (sparc_flat_expand_prologue): Likewise.
        (sparc_output_mi_thunk): Set the pic_offset_table_rtx object.
        (sparc_use_pseudo_pic_reg): New function.
        (sparc_init_pic_reg): Likewise.
        * config/sparc/sparc.md (vxworks_load_got): Set the GOT register.
        (builtin_setjmp_receiver): Enable only for TARGET_VXWORKS_RTP.

2018-01-12  Christophe Lyon  <christophe.lyon@linaro.org>

        * doc/sourcebuild.texi (Effective-Target Keywords, Other attributes):
        Add item for branch_cost.

2018-01-12  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/83565
        * rtlanal.c (nonzero_bits1): On WORD_REGISTER_OPERATIONS machines, do
        not extend the result to a larger mode for rotate operations.
        (num_sign_bit_copies1): Likewise.

2018-01-12  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR target/40411
        * config/sol2.h (STARTFILE_ARCH_SPEC): Don't use with -shared or
        -symbolic.
        Use values-Xc.o for -pedantic.
        Link with values-xpg4.o for C90, values-xpg6.o otherwise.

2018-01-12  Martin Liska  <mliska@suse.cz>

        PR ipa/83054
        * ipa-devirt.c (final_warning_record::grow_type_warnings):
        New function.
        (possible_polymorphic_call_targets): Use it.
        (ipa_devirt): Likewise.

2018-01-12  Martin Liska  <mliska@suse.cz>

        * profile-count.h (enum profile_quality): Use 0 as invalid
        enum value of profile_quality.

2018-01-12  Chung-Ju Wu  <jasonwucj@gmail.com>

        * doc/invoke.texi (NDS32 Options): Add -mext-perf, -mext-perf2 and
        -mext-string options.

2018-01-12  Richard Biener  <rguenther@suse.de>

        * lto-streamer-out.c (DFS::DFS_write_tree_body): Process
        DECL_DEBUG_EXPR conditional on DECL_HAS_DEBUG_EXPR_P.
        * tree-streamer-in.c (lto_input_ts_decl_common_tree_pointers):
        Likewise.
        * tree-streamer-out.c (write_ts_decl_common_tree_pointers): Likewise.

2018-01-11  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * configure.ac (--with-long-double-format): Add support for the
        configuration option to change the default long double format on
        PowerPC systems.
        * config.gcc (powerpc*-linux*-*): Likewise.
        * configure: Regenerate.
        * config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): If long
        double is IEEE, define __KC__ and __KF__ to allow floatn.h to be
        used without modification.

2018-01-11  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000-builtin.def (BU_P7_MISC_X): New #define.
        (SPEC_BARRIER): New instantiation of BU_P7_MISC_X.
        * config/rs6000/rs6000.c (rs6000_expand_builtin): Handle
        MISC_BUILTIN_SPEC_BARRIER.
        (rs6000_init_builtins): Likewise.
        * config/rs6000/rs6000.md (UNSPECV_SPEC_BARRIER): New UNSPECV
        enum value.
        (speculation_barrier): New define_insn.
        * doc/extend.texi: Document __builtin_speculation_barrier.

2018-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR target/83203
        * config/i386/i386.c (ix86_expand_vector_init_one_nonzero): If one_var
        is 0, for V{8,16}S[IF] and V[48]D[IF]mode use gen_vec_set<mode>_0.
        * config/i386/sse.md (VI8_AVX_AVX512F, VI4F_256_512): New mode
        iterators.
        (ssescalarmodesuffix): Add 512-bit vectors.  Use "d" or "q" for
        integral modes instead of "ss" and "sd".
        (vec_set<mode>_0): New define_insns for 256-bit and 512-bit
        vectors with 32-bit and 64-bit elements.
        (vecdupssescalarmodesuffix): New mode attribute.
        (vec_dup<mode>): Use it.

2018-01-11  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/83330
        * config/i386/i386.c (ix86_compute_frame_layout): Align stack
        frame if argument is passed on stack.

2018-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR target/82682
        * ree.c (combine_reaching_defs): Optimize also
        reg2=exp; reg1=reg2; reg2=any_extend(reg1); into
        reg2=any_extend(exp); reg1=reg2;, formatting fix.

2018-01-11  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83189
        * gimple-ssa-isolate-paths.c (isolate_path): Fix profile update.

2018-01-11  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83718
        * tree-inline.c (copy_cfg_body): Adjust num&den for scaling
        after they are computed.

2018-01-11  Bin Cheng  <bin.cheng@arm.com>

        PR tree-optimization/83695
        * gimple-loop-linterchange.cc
        (tree_loop_interchange::interchange_loops): Call scev_reset_htab to
        reset cached scev information after interchange.
        (pass_linterchange::execute): Remove call to scev_reset_htab.

2018-01-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/arm_neon.h (vfmlal_lane_low_u32, vfmlal_lane_high_u32,
        vfmlalq_laneq_low_u32, vfmlalq_lane_low_u32, vfmlal_laneq_low_u32,
        vfmlalq_laneq_high_u32, vfmlalq_lane_high_u32, vfmlal_laneq_high_u32,
        vfmlsl_lane_low_u32, vfmlsl_lane_high_u32, vfmlslq_laneq_low_u32,
        vfmlslq_lane_low_u32, vfmlsl_laneq_low_u32, vfmlslq_laneq_high_u32,
        vfmlslq_lane_high_u32, vfmlsl_laneq_high_u32): Define.
        * config/arm/arm_neon_builtins.def (vfmal_lane_low,
        vfmal_lane_lowv4hf, vfmal_lane_lowv8hf, vfmal_lane_high,
        vfmal_lane_highv4hf, vfmal_lane_highv8hf, vfmsl_lane_low,
        vfmsl_lane_lowv4hf, vfmsl_lane_lowv8hf, vfmsl_lane_high,
        vfmsl_lane_highv4hf, vfmsl_lane_highv8hf): New sets of builtins.
        * config/arm/iterators.md (VFMLSEL2, vfmlsel2): New mode attributes.
        (V_lane_reg): Likewise.
        * config/arm/neon.md (neon_vfm<vfml_op>l_lane_<vfml_half><VCVTF:mode>):
        New define_expand.
        (neon_vfm<vfml_op>l_lane_<vfml_half><vfmlsel2><mode>): Likewise.
        (vfmal_lane_low<mode>_intrinsic,
        vfmal_lane_low<vfmlsel2><mode>_intrinsic,
        vfmal_lane_high<vfmlsel2><mode>_intrinsic,
        vfmal_lane_high<mode>_intrinsic, vfmsl_lane_low<mode>_intrinsic,
        vfmsl_lane_low<vfmlsel2><mode>_intrinsic,
        vfmsl_lane_high<vfmlsel2><mode>_intrinsic,
        vfmsl_lane_high<mode>_intrinsic): New define_insns.

2018-01-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/arm-cpus.in (fp16fml): New feature.
        (ALL_SIMD): Add fp16fml.
        (armv8.2-a): Add fp16fml as an option.
        (armv8.3-a): Likewise.
        (armv8.4-a): Add fp16fml as part of fp16.
        * config/arm/arm.h (TARGET_FP16FML): Define.
        * config/arm/arm-c.c (arm_cpu_builtins): Define __ARM_FEATURE_FP16_FML
        when appropriate.
        * config/arm/arm-modes.def (V2HF): Define.
        * config/arm/arm_neon.h (vfmlal_low_u32, vfmlsl_low_u32,
        vfmlal_high_u32, vfmlsl_high_u32, vfmlalq_low_u32,
        vfmlslq_low_u32, vfmlalq_high_u32, vfmlslq_high_u32): Define.
        * config/arm/arm_neon_builtins.def (vfmal_low, vfmal_high,
        vfmsl_low, vfmsl_high): New set of builtins.
        * config/arm/iterators.md (PLUSMINUS): New code iterator.
        (vfml_op): New code attribute.
        (VFMLHALVES): New int iterator.
        (VFML, VFMLSEL): New mode attributes.
        (V_reg): Define mapping for V2HF.
        (V_hi, V_lo): New mode attributes.
        (VF_constraint): Likewise.
        (vfml_half, vfml_half_selector): New int attributes.
        * config/arm/neon.md (neon_vfm<vfml_op>l_<vfml_half><mode>): New
        define_expand.
        (vfmal_low<mode>_intrinsic, vfmsl_high<mode>_intrinsic,
        vfmal_high<mode>_intrinsic, vfmsl_low<mode>_intrinsic):
        New define_insn.
        * config/arm/t-arm-elf (v8_fps): Add fp16fml.
        * config/arm/t-multilib (v8_2_a_simd_variants): Add fp16fml.
        * config/arm/unspecs.md (UNSPEC_VFML_LO, UNSPEC_VFML_HI): New unspecs.
        * doc/invoke.texi (ARM Options): Document fp16fml.  Update armv8.4-a
        documentation.
        * doc/sourcebuild.texi (arm_fp16fml_neon_ok, arm_fp16fml_neon):
        Document new effective target and option set.

2018-01-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/arm-cpus.in (armv8_4): New feature.
        (ARMv8_4a): New fgroup.
        (armv8.4-a): New arch.
        * config/arm/arm-tables.opt: Regenerate.
        * config/arm/t-aprofile: Add matching rules for -march=armv8.4-a.
        * config/arm/t-arm-elf (all_v8_archs): Add armv8.4-a.
        * config/arm/t-multilib (v8_4_a_simd_variants): New variable.
        Add matching rules for -march=armv8.4-a and extensions.
        * doc/invoke.texi (ARM Options): Document -march=armv8.4-a.

2018-01-11  Oleg Endo  <olegendo@gcc.gnu.org>

        PR target/81821
        * config/rx/rx.md (BW): New mode attribute.
        (sync_lock_test_and_setsi): Add mode suffix to insn output.

2018-01-11  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83435
        * graphite.c (canonicalize_loop_form): Ignore fake loop exit edges.
        * graphite-scop-detection.c (scop_detection::get_sese): Likewise.
        * tree-vrp.c (add_assert_info): Drop TREE_OVERFLOW if they appear.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/aarch64/aarch64.c (aarch64_address_info): Add a const_offset
        field.
        (aarch64_classify_address): Initialize it.  Track polynomial offsets.
        (aarch64_print_address_internal): Use it to check for a zero offset.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/aarch64/aarch64-modes.def (NUM_POLY_INT_COEFFS): Set to 2.
        * config/aarch64/aarch64-protos.h (aarch64_initial_elimination_offset):
        Return a poly_int64 rather than a HOST_WIDE_INT.
        (aarch64_offset_7bit_signed_scaled_p): Take the offset as a poly_int64
        rather than a HOST_WIDE_INT.
        * config/aarch64/aarch64.h (aarch64_frame): Protect with
        HAVE_POLY_INT_H rather than HOST_WIDE_INT.  Change locals_offset,
        hard_fp_offset, frame_size, initial_adjust, callee_offset and
        final_offset from HOST_WIDE_INT to poly_int64.
        * config/aarch64/aarch64-builtins.c (aarch64_simd_expand_args): Use
        to_constant when getting the number of units in an Advanced SIMD
        mode.
        (aarch64_builtin_vectorized_function): Check for a constant number
        of units.
        * config/aarch64/aarch64-simd.md (mov<mode>): Handle polynomial
        GET_MODE_SIZE.
        (aarch64_ld<VSTRUCT:nregs>_lane<VALLDIF:mode>): Use the nunits
        attribute instead of GET_MODE_NUNITS.
        * config/aarch64/aarch64.c (aarch64_hard_regno_nregs)
        (aarch64_class_max_nregs): Use the constant_lowest_bound of the
        GET_MODE_SIZE for fixed-size registers.
        (aarch64_const_vec_all_same_in_range_p): Use const_vec_duplicate_p.
        (aarch64_hard_regno_call_part_clobbered, aarch64_classify_index)
        (aarch64_mode_valid_for_sched_fusion_p, aarch64_classify_address)
        (aarch64_legitimize_address_displacement, aarch64_secondary_reload)
        (aarch64_print_operand, aarch64_print_address_internal)
        (aarch64_address_cost, aarch64_rtx_costs, aarch64_register_move_cost)
        (aarch64_short_vector_p, aapcs_vfp_sub_candidate)
        (aarch64_simd_attr_length_rglist, aarch64_operands_ok_for_ldpstp):
        Handle polynomial GET_MODE_SIZE.
        (aarch64_hard_regno_caller_save_mode): Likewise.  Return modes
        wider than SImode without modification.
        (tls_symbolic_operand_type): Use strip_offset instead of split_const.
        (aarch64_pass_by_reference, aarch64_layout_arg, aarch64_pad_reg_upward)
        (aarch64_gimplify_va_arg_expr): Assert that we don't yet handle
        passing and returning SVE modes.
        (aarch64_function_value, aarch64_layout_arg): Use gen_int_mode
        rather than GEN_INT.
        (aarch64_emit_probe_stack_range): Take the size as a poly_int64
        rather than a HOST_WIDE_INT, but call sorry if it isn't constant.
        (aarch64_allocate_and_probe_stack_space): Likewise.
        (aarch64_layout_frame): Cope with polynomial offsets.
        (aarch64_save_callee_saves, aarch64_restore_callee_saves): Take the
        start_offset as a poly_int64 rather than a HOST_WIDE_INT.  Track
        polynomial offsets.
        (offset_9bit_signed_unscaled_p, offset_12bit_unsigned_scaled_p)
        (aarch64_offset_7bit_signed_scaled_p): Take the offset as a
        poly_int64 rather than a HOST_WIDE_INT.
        (aarch64_get_separate_components, aarch64_process_components)
        (aarch64_expand_prologue, aarch64_expand_epilogue)
        (aarch64_use_return_insn_p): Handle polynomial frame offsets.
        (aarch64_anchor_offset): New function, split out from...
        (aarch64_legitimize_address): ...here.
        (aarch64_builtin_vectorization_cost): Handle polynomial
        TYPE_VECTOR_SUBPARTS.
        (aarch64_simd_check_vect_par_cnst_half): Handle polynomial
        GET_MODE_NUNITS.
        (aarch64_simd_make_constant, aarch64_expand_vector_init): Get the
        number of elements from the PARALLEL rather than the mode.
        (aarch64_shift_truncation_mask): Use GET_MODE_UNIT_BITSIZE
        rather than GET_MODE_BITSIZE.
        (aarch64_evpc_trn, aarch64_evpc_uzp, aarch64_evpc_ext)
        (aarch64_evpc_rev, aarch64_evpc_dup, aarch64_evpc_zip)
        (aarch64_expand_vec_perm_const_1): Handle polynomial
        d->perm.length () and d->perm elements.
        (aarch64_evpc_tbl): Likewise.  Use nelt rather than GET_MODE_NUNITS.
        Apply to_constant to d->perm elements.
        (aarch64_simd_valid_immediate, aarch64_vec_fpconst_pow_of_2): Handle
        polynomial CONST_VECTOR_NUNITS.
        (aarch64_move_pointer): Take amount as a poly_int64 rather
        than an int.
        (aarch64_progress_pointer): Avoid temporary variable.
        * config/aarch64/aarch64.md (aarch64_<crc_variant>): Use
        the mode attribute instead of GET_MODE.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/aarch64/aarch64.c (aarch64_force_temporary): Assert that
        x exists before using it.
        (aarch64_add_constant_internal): Rename to...
        (aarch64_add_offset_1): ...this.  Replace regnum with separate
        src and dest rtxes.  Handle the case in which they're different,
        including when the offset is zero.  Replace scratchreg with an rtx.
        Use 2 additions if there is no spare register into which we can
        move a 16-bit constant.
        (aarch64_add_constant): Delete.
        (aarch64_add_offset): Replace reg with separate src and dest
        rtxes.  Take a poly_int64 offset instead of a HOST_WIDE_INT.
        Use aarch64_add_offset_1.
        (aarch64_add_sp, aarch64_sub_sp): Take the scratch register as
        an rtx rather than an int.  Take the delta as a poly_int64
        rather than a HOST_WIDE_INT.  Use aarch64_add_offset.
        (aarch64_expand_mov_immediate): Update uses of aarch64_add_offset.
        (aarch64_expand_prologue): Update calls to aarch64_sub_sp,
        aarch64_allocate_and_probe_stack_space and aarch64_add_offset.
        (aarch64_expand_epilogue): Update calls to aarch64_add_offset
        and aarch64_add_sp.
        (aarch64_output_mi_thunk): Use aarch64_add_offset rather than
        aarch64_add_constant.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.c (aarch64_reinterpret_float_as_int):
        Use scalar_float_mode.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64-simd.md
        (aarch64_fml<f16mac1>l<f16quad>_low<mode>): Avoid GET_MODE_NUNITS.
        (aarch64_fml<f16mac1>l<f16quad>_high<mode>): Likewise.
        (aarch64_fml<f16mac1>l_lane_lowv2sf): Likewise.
        (aarch64_fml<f16mac1>l_lane_highv2sf): Likewise.
        (aarch64_fml<f16mac1>lq_laneq_lowv4sf): Likewise.
        (aarch64_fml<f16mac1>lq_laneq_highv4sf): Likewise.
        (aarch64_fml<f16mac1>l_laneq_lowv2sf): Likewise.
        (aarch64_fml<f16mac1>l_laneq_highv2sf): Likewise.
        (aarch64_fml<f16mac1>lq_lane_lowv4sf): Likewise.
        (aarch64_fml<f16mac1>lq_lane_highv4sf): Likewise.

2018-01-11  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/83514
        * config/arm/arm.c (arm_declare_function_name): Set arch_to_print if
        targ_options->x_arm_arch_string is non NULL.

2018-01-11  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64.h
        (AARCH64_FL_FOR_ARCH8_4): Add  AARCH64_FL_DOTPROD.

2018-01-11  Sudakshina Das  <sudi.das@arm.com>

        PR target/82096
        * expmed.c (emit_store_flag_force): Swap if const op0
        and change VOIDmode to mode of op0.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>

        PR rtl-optimization/83761
        * caller-save.c (replace_reg_with_saved_mem): Pass bits rather
        than bytes to mode_for_size.

2018-01-10  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83189
        * gfortran.fortran-torture/compile/pr83189.f90: New testcase.
        * tree-ssa-loop-manip.c (tree_transform_and_unroll_loop): Handle zero
        profile.

2018-01-10  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83575
        * cfgrtl.c (rtl_verify_edges): Only verify fixability of partition
        when in layout mode.
        (cfg_layout_finalize): Do not verify cfg before we are out of layout.
        * cfgcleanup.c (try_optimize_cfg): Only verify flow info when doing
        partition fixup.

2018-01-10  Michael Collison  <michael.collison@arm.com>

        * config/aarch64/aarch64-modes.def (V2HF): New VECTOR_MODE.
        * config/aarch64/aarch64-option-extension.def: Add
        AARCH64_OPT_EXTENSION of 'fp16fml'.
        * config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
        (__ARM_FEATURE_FP16_FML): Define if TARGET_F16FML is true.
        * config/aarch64/predicates.md (aarch64_lane_imm3): New predicate.
        * config/aarch64/constraints.md (Ui7): New constraint.
        * config/aarch64/iterators.md (VFMLA_W): New mode iterator.
        (VFMLA_SEL_W): Ditto.
        (f16quad): Ditto.
        (f16mac1): Ditto.
        (VFMLA16_LOW): New int iterator.
        (VFMLA16_HIGH): Ditto.
        (UNSPEC_FMLAL): New unspec.
        (UNSPEC_FMLSL): Ditto.
        (UNSPEC_FMLAL2): Ditto.
        (UNSPEC_FMLSL2): Ditto.
        (f16mac): New code attribute.
        * config/aarch64/aarch64-simd-builtins.def
        (aarch64_fmlal_lowv2sf): Ditto.
        (aarch64_fmlsl_lowv2sf): Ditto.
        (aarch64_fmlalq_lowv4sf): Ditto.
        (aarch64_fmlslq_lowv4sf): Ditto.
        (aarch64_fmlal_highv2sf): Ditto.
        (aarch64_fmlsl_highv2sf): Ditto.
        (aarch64_fmlalq_highv4sf): Ditto.
        (aarch64_fmlslq_highv4sf): Ditto.
        (aarch64_fmlal_lane_lowv2sf): Ditto.
        (aarch64_fmlsl_lane_lowv2sf): Ditto.
        (aarch64_fmlal_laneq_lowv2sf): Ditto.
        (aarch64_fmlsl_laneq_lowv2sf): Ditto.
        (aarch64_fmlalq_lane_lowv4sf): Ditto.
        (aarch64_fmlsl_lane_lowv4sf): Ditto.
        (aarch64_fmlalq_laneq_lowv4sf): Ditto.
        (aarch64_fmlsl_laneq_lowv4sf): Ditto.
        (aarch64_fmlal_lane_highv2sf): Ditto.
        (aarch64_fmlsl_lane_highv2sf): Ditto.
        (aarch64_fmlal_laneq_highv2sf): Ditto.
        (aarch64_fmlsl_laneq_highv2sf): Ditto.
        (aarch64_fmlalq_lane_highv4sf): Ditto.
        (aarch64_fmlsl_lane_highv4sf): Ditto.
        (aarch64_fmlalq_laneq_highv4sf): Ditto.
        (aarch64_fmlsl_laneq_highv4sf): Ditto.
        * config/aarch64/aarch64-simd.md:
        (aarch64_fml<f16mac1>l<f16quad>_low<mode>): New pattern.
        (aarch64_fml<f16mac1>l<f16quad>_high<mode>): Ditto.
        (aarch64_simd_fml<f16mac1>l<f16quad>_low<mode>): Ditto.
        (aarch64_simd_fml<f16mac1>l<f16quad>_high<mode>): Ditto.
        (aarch64_fml<f16mac1>l_lane_lowv2sf): Ditto.
        (aarch64_fml<f16mac1>l_lane_highv2sf): Ditto.
        (aarch64_simd_fml<f16mac>l_lane_lowv2sf): Ditto.
        (aarch64_simd_fml<f16mac>l_lane_highv2sf): Ditto.
        (aarch64_fml<f16mac1>lq_laneq_lowv4sf): Ditto.
        (aarch64_fml<f16mac1>lq_laneq_highv4sf): Ditto.
        (aarch64_simd_fml<f16mac>lq_laneq_lowv4sf): Ditto.
        (aarch64_simd_fml<f16mac>lq_laneq_highv4sf): Ditto.
        (aarch64_fml<f16mac1>l_laneq_lowv2sf): Ditto.
        (aarch64_fml<f16mac1>l_laneq_highv2sf): Ditto.
        (aarch64_simd_fml<f16mac>l_laneq_lowv2sf): Ditto.
        (aarch64_simd_fml<f16mac>l_laneq_highv2sf): Ditto.
        (aarch64_fml<f16mac1>lq_lane_lowv4sf): Ditto.
        (aarch64_fml<f16mac1>lq_lane_highv4sf): Ditto.
        (aarch64_simd_fml<f16mac>lq_lane_lowv4sf): Ditto.
        (aarch64_simd_fml<f16mac>lq_lane_highv4sf): Ditto.
        * config/aarch64/arm_neon.h (vfmlal_low_u32): New intrinsic.
        (vfmlsl_low_u32): Ditto.
        (vfmlalq_low_u32): Ditto.
        (vfmlslq_low_u32): Ditto.
        (vfmlal_high_u32): Ditto.
        (vfmlsl_high_u32): Ditto.
        (vfmlalq_high_u32): Ditto.
        (vfmlslq_high_u32): Ditto.
        (vfmlal_lane_low_u32): Ditto.
        (vfmlsl_lane_low_u32): Ditto.
        (vfmlal_laneq_low_u32): Ditto.
        (vfmlsl_laneq_low_u32): Ditto.
        (vfmlalq_lane_low_u32): Ditto.
        (vfmlslq_lane_low_u32): Ditto.
        (vfmlalq_laneq_low_u32): Ditto.
        (vfmlslq_laneq_low_u32): Ditto.
        (vfmlal_lane_high_u32): Ditto.
        (vfmlsl_lane_high_u32): Ditto.
        (vfmlal_laneq_high_u32): Ditto.
        (vfmlsl_laneq_high_u32): Ditto.
        (vfmlalq_lane_high_u32): Ditto.
        (vfmlslq_lane_high_u32): Ditto.
        (vfmlalq_laneq_high_u32): Ditto.
        (vfmlslq_laneq_high_u32): Ditto.
        * config/aarch64/aarch64.h (AARCH64_FL_F16SML): New flag.
        (AARCH64_FL_FOR_ARCH8_4): New.
        (AARCH64_ISA_F16FML): New ISA flag.
        (TARGET_F16FML): New feature flag for fp16fml.
        (doc/invoke.texi): Document new fp16fml option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

        * config/aarch64/aarch64-builtins.c:
        (aarch64_types_ternopu_imm_qualifiers, TYPES_TERNOPUI): New.
        * config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
        (__ARM_FEATURE_SHA3): Define if TARGET_SHA3 is true.
        * config/aarch64/aarch64.h (AARCH64_FL_SHA3): New flags.
        (AARCH64_ISA_SHA3): New ISA flag.
        (TARGET_SHA3): New feature flag for sha3.
        * config/aarch64/iterators.md (sha512_op): New int attribute.
        (CRYPTO_SHA512): New int iterator.
        (UNSPEC_SHA512H): New unspec.
        (UNSPEC_SHA512H2): Ditto.
        (UNSPEC_SHA512SU0): Ditto.
        (UNSPEC_SHA512SU1): Ditto.
        * config/aarch64/aarch64-simd-builtins.def
        (aarch64_crypto_sha512hqv2di): New builtin.
        (aarch64_crypto_sha512h2qv2di): Ditto.
        (aarch64_crypto_sha512su0qv2di): Ditto.
        (aarch64_crypto_sha512su1qv2di): Ditto.
        (aarch64_eor3qv8hi): Ditto.
        (aarch64_rax1qv2di): Ditto.
        (aarch64_xarqv2di): Ditto.
        (aarch64_bcaxqv8hi): Ditto.
        * config/aarch64/aarch64-simd.md:
        (aarch64_crypto_sha512h<sha512_op>qv2di): New pattern.
        (aarch64_crypto_sha512su0qv2di): Ditto.
        (aarch64_crypto_sha512su1qv2di): Ditto.
        (aarch64_eor3qv8hi): Ditto.
        (aarch64_rax1qv2di): Ditto.
        (aarch64_xarqv2di): Ditto.
        (aarch64_bcaxqv8hi): Ditto.
        * config/aarch64/arm_neon.h (vsha512hq_u64): New intrinsic.
        (vsha512h2q_u64): Ditto.
        (vsha512su0q_u64): Ditto.
        (vsha512su1q_u64): Ditto.
        (veor3q_u16): Ditto.
        (vrax1q_u64): Ditto.
        (vxarq_u64): Ditto.
        (vbcaxq_u16): Ditto.
        * config/arm/types.md (crypto_sha512): New type attribute.
        (crypto_sha3): Ditto.
        (doc/invoke.texi): Document new sha3 option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

        * config/aarch64/aarch64-builtins.c:
        (aarch64_types_quadopu_imm_qualifiers, TYPES_QUADOPUI): New.
        * config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
        (__ARM_FEATURE_SM3): Define if TARGET_SM4 is true.
        (__ARM_FEATURE_SM4): Define if TARGET_SM4 is true.
        * config/aarch64/aarch64.h (AARCH64_FL_SM4): New flags.
        (AARCH64_ISA_SM4): New ISA flag.
        (TARGET_SM4): New feature flag for sm4.
        * config/aarch64/aarch64-simd-builtins.def
        (aarch64_sm3ss1qv4si): Ditto.
        (aarch64_sm3tt1aq4si): Ditto.
        (aarch64_sm3tt1bq4si): Ditto.
        (aarch64_sm3tt2aq4si): Ditto.
        (aarch64_sm3tt2bq4si): Ditto.
        (aarch64_sm3partw1qv4si): Ditto.
        (aarch64_sm3partw2qv4si): Ditto.
        (aarch64_sm4eqv4si): Ditto.
        (aarch64_sm4ekeyqv4si): Ditto.
        * config/aarch64/aarch64-simd.md:
        (aarch64_sm3ss1qv4si): Ditto.
        (aarch64_sm3tt<sm3tt_op>qv4si): Ditto.
        (aarch64_sm3partw<sm3part_op>qv4si): Ditto.
        (aarch64_sm4eqv4si): Ditto.
        (aarch64_sm4ekeyqv4si): Ditto.
        * config/aarch64/iterators.md (sm3tt_op): New int iterator.
        (sm3part_op): Ditto.
        (CRYPTO_SM3TT): Ditto.
        (CRYPTO_SM3PART): Ditto.
        (UNSPEC_SM3SS1): New unspec.
        (UNSPEC_SM3TT1A): Ditto.
        (UNSPEC_SM3TT1B): Ditto.
        (UNSPEC_SM3TT2A): Ditto.
        (UNSPEC_SM3TT2B): Ditto.
        (UNSPEC_SM3PARTW1): Ditto.
        (UNSPEC_SM3PARTW2): Ditto.
        (UNSPEC_SM4E): Ditto.
        (UNSPEC_SM4EKEY): Ditto.
        * config/aarch64/constraints.md (Ui2): New constraint.
        * config/aarch64/predicates.md (aarch64_imm2): New predicate.
        * config/arm/types.md (crypto_sm3): New type attribute.
        (crypto_sm4): Ditto.
        * config/aarch64/arm_neon.h (vsm3ss1q_u32): New intrinsic.
        (vsm3tt1aq_u32): Ditto.
        (vsm3tt1bq_u32): Ditto.
        (vsm3tt2aq_u32): Ditto.
        (vsm3tt2bq_u32): Ditto.
        (vsm3partw1q_u32): Ditto.
        (vsm3partw2q_u32): Ditto.
        (vsm4eq_u32): Ditto.
        (vsm4ekeyq_u32): Ditto.
        (doc/invoke.texi): Document new sm4 option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

        * config/aarch64/aarch64-arches.def (armv8.4-a): New architecture.
        * config/aarch64/aarch64.h (AARCH64_ISA_V8_4): New ISA flag.
        (AARCH64_FL_FOR_ARCH8_4): New.
        (AARCH64_FL_V8_4): New flag.
        (doc/invoke.texi): Document new armv8.4-a option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

        * config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
        (__ARM_FEATURE_AES): Define if TARGET_AES is true.
        (__ARM_FEATURE_SHA2): Define if TARGET_SHA2 is true.
        * config/aarch64/aarch64-option-extension.def: Add
        AARCH64_OPT_EXTENSION of 'sha2'.
        (aes): Add AARCH64_OPT_EXTENSION of 'aes'.
        (crypto): Disable sha2 and aes if crypto disabled.
        (crypto): Enable aes and sha2 if enabled.
        (simd): Disable sha2 and aes if simd disabled.
        * config/aarch64/aarch64.h (AARCH64_FL_AES, AARCH64_FL_SHA2):
        New flags.
        (AARCH64_ISA_AES, AARCH64_ISA_SHA2): New ISA flags.
        (TARGET_SHA2): New feature flag for sha2.
        (TARGET_AES): New feature flag for aes.
        * config/aarch64/aarch64-simd.md:
        (aarch64_crypto_aes<aes_op>v16qi): Make pattern
        conditional on TARGET_AES.
        (aarch64_crypto_aes<aesmc_op>v16qi): Ditto.
        (aarch64_crypto_sha1hsi): Make pattern conditional
        on TARGET_SHA2.
        (aarch64_crypto_sha1hv4si): Ditto.
        (aarch64_be_crypto_sha1hv4si): Ditto.
        (aarch64_crypto_sha1su1v4si): Ditto.
        (aarch64_crypto_sha1<sha1_op>v4si): Ditto.
        (aarch64_crypto_sha1su0v4si): Ditto.
        (aarch64_crypto_sha256h<sha256_op>v4si): Ditto.
        (aarch64_crypto_sha256su0v4si): Ditto.
        (aarch64_crypto_sha256su1v4si): Ditto.
        (doc/invoke.texi): Document new aes and sha2 options.

2018-01-10  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83781
        * gimple-fold.c (get_range_strlen): Avoid treating arrays of pointers
        as string arrays.

2018-01-11  Martin Sebor  <msebor@gmail.com>
            Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR tree-optimization/83501
        PR tree-optimization/81703

        * tree-ssa-strlen.c (get_string_cst): Rename...
        (get_string_len): ...to this.  Handle global constants.
        (handle_char_store): Adjust.

2018-01-10  Kito Cheng  <kito.cheng@gmail.com>
            Jim Wilson  <jimw@sifive.com>

        * config/riscv/riscv-protos.h (riscv_output_return): New.
        * config/riscv/riscv.c (struct machine_function): New naked_p field.
        (riscv_attribute_table, riscv_output_return),
        (riscv_handle_fndecl_attribute, riscv_naked_function_p),
        (riscv_allocate_stack_slots_for_args, riscv_warn_func_return): New.
        (riscv_compute_frame_info): Only compute frame->mask if not a naked
        function.
        (riscv_expand_prologue): Add early return for naked function.
        (riscv_expand_epilogue): Likewise.
        (riscv_function_ok_for_sibcall): Return false for naked function.
        (riscv_set_current_function): New.
        (TARGET_SET_CURRENT_FUNCTION, TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS),
        (TARGET_ATTRIBUTE_TABLE, TARGET_WARN_FUNC_RETURN): New.
        * config/riscv/riscv.md (simple_return): Call riscv_output_return.
        * doc/extend.texi (RISC-V Function Attributes): New.

2018-01-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * config/rs6000/rs6000.c (is_complex_IBM_long_double): Explicitly
        check for 128-bit long double before checking TCmode.
        * config/rs6000/rs6000.h (FLOAT128_IEEE_P): Explicitly check for
        128-bit long doubles before checking TFmode or TCmode.
        (FLOAT128_IBM_P): Likewise.

2018-01-10  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83671
        * builtins.c (c_strlen): Unconditionally return zero for the empty
        string.
        Use -Warray-bounds for warnings.
        * gimple-fold.c (get_range_strlen): Handle non-constant lengths
        for non-constant array indices with COMPONENT_REF, arrays of
        arrays, and pointers to arrays.
        (gimple_fold_builtin_strlen): Determine and set length range for
        non-constant character arrays.

2018-01-10  Aldy Hernandez  <aldyh@redhat.com>

        PR middle-end/81897
        * tree-ssa-uninit.c (convert_control_dep_chain_into_preds): Skip
        empty blocks.

2018-01-10  Eric Botcazou  <ebotcazou@adacore.com>

        * dwarf2out.c (dwarf2out_var_location): Do not pass NULL to fprintf.

2018-01-10  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/83399
        * config/rs6000/rs6000.c (print_operand) <'y'>: Use
        VECTOR_MEM_ALTIVEC_OR_VSX_P.
        * config/rs6000/vsx.md (*vsx_le_perm_load_<mode> for VSX_D): Use
        indexed_or_indirect_operand predicate.
        (*vsx_le_perm_load_<mode> for VSX_W): Likewise.
        (*vsx_le_perm_load_v8hi): Likewise.
        (*vsx_le_perm_load_v16qi): Likewise.
        (*vsx_le_perm_store_<mode> for VSX_D): Likewise.
        (*vsx_le_perm_store_<mode> for VSX_W): Likewise.
        (*vsx_le_perm_store_v8hi): Likewise.
        (*vsx_le_perm_store_v16qi): Likewise.
        (eight unnamed splitters): Likewise.

2018-01-10  Peter Bergner  <bergner@vnet.ibm.com>

        * config/rs6000/x86intrin.h: Change #warning to #error. Update message.
        * config/rs6000/emmintrin.h: Likewise.
        * config/rs6000/mmintrin.h: Likewise.
        * config/rs6000/xmmintrin.h: Likewise.

2018-01-10  David Malcolm  <dmalcolm@redhat.com>

        PR c++/43486
        * tree-core.h: Document EXPR_LOCATION_WRAPPER_P's usage of
        "public_flag".
        * tree.c (tree_nop_conversion): Return true for location wrapper
        nodes.
        (maybe_wrap_with_location): New function.
        (selftest::check_strip_nops): New function.
        (selftest::test_location_wrappers): New function.
        (selftest::tree_c_tests): Call it.
        * tree.h (STRIP_ANY_LOCATION_WRAPPER): New macro.
        (maybe_wrap_with_location): New decl.
        (EXPR_LOCATION_WRAPPER_P): New macro.
        (location_wrapper_p): New inline function.
        (tree_strip_any_location_wrapper): New inline function.

2018-01-10  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/83735
        * config/i386/i386.c (ix86_compute_frame_layout): Always adjust
        stack_realign_offset for the largest alignment of stack slot
        actually used.
        (ix86_find_max_used_stack_alignment): New function.
        (ix86_finalize_stack_frame_flags): Use it.  Set
        max_used_stack_alignment if we don't realign stack.
        * config/i386/i386.h (machine_function): Add
        max_used_stack_alignment.

2018-01-10  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/arm.opt (-mbranch-cost): New option.
        * config/arm/arm.h (BRANCH_COST): Take arm_branch_cost into
        account.

2018-01-10  Segher Boessenkool  <segher@kernel.crashing.org>

        PR target/83629
        * config/rs6000/rs6000.md (load_toc_v4_PIC_2, load_toc_v4_PIC_3b,
        load_toc_v4_PIC_3c): Wrap const term in CONST RTL.

2018-01-10  Richard Biener  <rguenther@suse.de>

        PR debug/83765
        * dwarf2out.c (gen_subprogram_die): Hoist old_die && declaration
        early out so it also covers the case where we have a non-NULL
        origin.

2018-01-10  Richard Sandiford  <richard.sandiford@linaro.org>

        PR tree-optimization/83753
        * tree-vect-stmts.c (get_group_load_store_type): Use VMAT_CONTIGUOUS
        for non-strided grouped accesses if the number of elements is 1.

2018-01-10  Jan Hubicka  <hubicka@ucw.cz>

        PR target/81616
        * i386.c (ix86_vectorize_builtin_gather): Check TARGET_USE_GATHER.
        * i386.h (TARGET_USE_GATHER): Define.
        * x86-tune.def (X86_TUNE_USE_GATHER): New.

2018-01-10  Martin Liska  <mliska@suse.cz>

        PR bootstrap/82831
        * basic-block.h (CLEANUP_NO_PARTITIONING): New define.
        * bb-reorder.c (pass_reorder_blocks::execute): Do not clean up
        partitioning.
        * cfgcleanup.c (try_optimize_cfg): Fix up partitioning if
        CLEANUP_NO_PARTITIONING is not set.

2018-01-10  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/rtl.texi: Remove documentation of (const ...) wrappers
        for vectors, as a partial revert of r254296.
        * rtl.h (const_vec_p): Delete.
        (const_vec_duplicate_p): Don't test for vector CONSTs.
        (unwrap_const_vec_duplicate, const_vec_series_p): Likewise.
        * expmed.c (make_tree): Likewise.

        Revert:
        * common.md (E, F): Use CONSTANT_P instead of checking for
        CONST_VECTOR.
        * emit-rtl.c (gen_lowpart_common): Use const_vec_p instead of
        checking for CONST_VECTOR.

2018-01-09  Jan Hubicka  <hubicka@ucw.cz>

        PR middle-end/83575
        * predict.c (force_edge_cold): Handle in more sane way edges
        with no prediction.

2018-01-09  Carl Love  <cel@us.ibm.com>

        * config/rs6002/altivec.md (p8_vmrgow): Add support for V2DI, V2DF,
        V4SI, V4SF types.
        (p8_vmrgew): Add support for V2DI, V2DF, V4SF types.
        * config/rs6000/rs6000-builtin.def: Add definitions for FLOAT2_V2DF,
        VMRGEW_V2DI, VMRGEW_V2DF, VMRGEW_V4SF, VMRGOW_V4SI, VMRGOW_V4SF,
        VMRGOW_V2DI, VMRGOW_V2DF.  Remove definition for VMRGOW.
        * config/rs6000/rs6000-c.c (VSX_BUILTIN_VEC_FLOAT2,
        P8V_BUILTIN_VEC_VMRGEW, P8V_BUILTIN_VEC_VMRGOW):  Add definitions.
        * config/rs6000/rs6000-protos.h: Add extern defition for
        rs6000_generate_float2_double_code.
        * config/rs6000/rs6000.c (rs6000_generate_float2_double_code): Add
        function.
        * config/rs6000/vsx.md (vsx_xvcdpsp): Add define_insn.
        (float2_v2df): Add define_expand.

2018-01-09  Uros Bizjak  <ubizjak@gmail.com>

        PR target/83628
        * combine.c (force_int_to_mode) <case ASHIFT>: Use mode instead of
        op_mode in the force_to_mode call.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.c (aarch64_evpc_trn): Use d.perm.series_p
        instead of checking each element individually.
        (aarch64_evpc_uzp): Likewise.
        (aarch64_evpc_zip): Likewise.
        (aarch64_evpc_ext): Likewise.
        (aarch64_evpc_rev): Likewise.
        (aarch64_evpc_dup): Test the encoding for a single duplicated element,
        instead of checking each element individually.  Return true without
        generating rtl if
        (aarch64_vectorize_vec_perm_const): Use all_from_input_p to test
        whether all selected elements come from the same input, instead of
        checking each element individually.  Remove calls to gen_rtx_REG,
        start_sequence and end_sequence and instead assert that no rtl is
        generated.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

        * config/aarch64/aarch64.c (aarch64_legitimate_constant_p): Fix
        order of HIGH and CONST checks.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-stmts.c (permute_vec_elements): Create a fresh variable
        if the destination isn't an SSA_NAME.

2018-01-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83668
        * graphite.c (canonicalize_loop_closed_ssa): Add edge argument,
        move prologue...
        (canonicalize_loop_form): ... here, renamed from ...
        (canonicalize_loop_closed_ssa_form): ... this and amended to
        swap successor edges for loop exit blocks to make us use
        the RPO order we need for initial schedule generation.

2018-01-09  Joseph Myers  <joseph@codesourcery.com>

        PR tree-optimization/64811
        * match.pd: When optimizing comparisons with Inf, avoid
        introducing or losing exceptions from comparisons with NaN.

2018-01-09  Martin Liska  <mliska@suse.cz>

        PR sanitizer/82517
        * asan.c (shadow_mem_size): Add gcc_assert.

2018-01-09  Georg-Johann Lay  <avr@gjlay.de>

        Don't save registers in main().

        PR target/83738
        * doc/invoke.texi (AVR Options) [-mmain-is-OS_task]: Document it.
        * config/avr/avr.opt (-mmain-is-OS_task): New target option.
        * config/avr/avr.c (avr_set_current_function): Don't error if
        naked, OS_task or OS_main are specified at the same time.
        (avr_function_ok_for_sibcall): Don't disable sibcalls for OS_task,
        OS_main.
        (avr_insert_attributes) [-mmain-is-OS_task] <main>: Add OS_task
        attribute.
        * common/config/avr/avr-common.c (avr_option_optimization_table):
        Switch on -mmain-is-OS_task for optimizing compilations.

2018-01-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83572
        * graphite.c: Include cfganal.h.
        (graphite_transform_loops): Connect infinite loops to exit
        and remove fake edges at the end.

2018-01-09  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-inline.c (edge_badness): Revert accidental checkin.

2018-01-09  Jan Hubicka  <hubicka@ucw.cz>

        PR ipa/80763
        * ipa-comdats.c (set_comdat_group): Only set comdat group of real
        symbols; not inline clones.

2018-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR target/83507
        * modulo-sched.c (schedule_reg_moves): Punt if we'd need to move
        hard registers.  Formatting fixes.

        PR preprocessor/83722
        * gcc.c (try_generate_repro): Pass
        &temp_stderr_files[RETRY_ICE_ATTEMPTS - 1] rather than
        &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1] as last argument to
        do_report_bug.

2018-01-08  Monk Chiang  <sh.chiang04@gmail.com>
            Kito Cheng  <kito.cheng@gmail.com>

        * config/riscv/riscv.c (machine_function::is_leaf): Remove field.
        (riscv_leaf_function_p): Delete.
        (riscv_function_ok_for_sibcall): Return false when TARGET_SAVE_RESTORE.

2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        * config/rs6000/rs6000-string.c (do_load_for_compare_from_addr): New
        function.
        (do_ifelse): New function.
        (do_isel): New function.
        (do_sub3): New function.
        (do_add3): New function.
        (do_load_mask_compare): New function.
        (do_overlap_load_compare): New function.
        (expand_compare_loop): New function.
        (expand_block_compare): Call expand_compare_loop() when appropriate.
        * config/rs6000/rs6000.opt (-mblock-compare-inline-limit): Change
        option description.
        (-mblock-compare-inline-loop-limit): New option.

2018-01-08  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        PR target/83677
        * config/rs6000/altivec.md (*altivec_vpermr_<mode>_internal):
        Reverse order of second and third operands in first alternative.
        * config/rs6000/rs6000.c (rs6000_expand_vector_set): Reverse order
        of first and second elements in UNSPEC_VPERMR vector.
        (altivec_expand_vec_perm_le): Likewise.

2018-01-08  Jeff Law  <law@redhat.com>

        PR rtl-optimizatin/81308
        * tree-switch-conversion.c (cfg_altered): New file scoped static.
        (process_switch): If group_case_labels makes a change, then set
        cfg_altered.
        (pass_convert_switch::execute): If a switch is converted, then
        set cfg_altered.  Return TODO_cfg_cleanup if cfg_altered is true.

        PR rtl-optimization/81308
        * recog.c (split_all_insns): Conditionally cleanup the CFG after
        splitting insns.

2018-01-08  Vidya Praveen  <vidyapraveen@arm.com>

        PR target/83663 - Revert r255946
        * config/aarch64/aarch64.c (aarch64_expand_vector_init): Modify code
        generation for cases where splatting a value is not useful.
        * simplify-rtx.c (simplify_ternary_operation): Simplify vec_merge
        across a vec_duplicate and a paradoxical subreg forming a vector
        mode to a vec_concat.

2018-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/arm/t-aprofile (MULTILIB_MATCHES): Add mapping rules for
        -march=armv8.3-a variants.
        * config/arm/t-multilib: Likewise.
        * config/arm/t-arm-elf: Likewise.  Handle dotprod extension.

2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        * config/rs6000/rs6000.md (cceq_ior_compare): Remove * so I can use it
        to generate rtl.
        (cceq_ior_compare_complement): Give it a name so I can use it, and
        change boolean_or_operator predicate to boolean_operator so it can
        be used to generate a crand.
        (eqne): New code iterator.
        (bd/bd_neg): New code_attrs.
        (<bd>_<mode>): New name for ctr<mode>_internal[12] now combined into
        a single define_insn.
        (<bd>tf_<mode>): A new insn pattern for the conditional form branch
        decrement (bdnzt/bdnzf/bdzt/bdzf).
        * config/rs6000/rs6000.c (rs6000_legitimate_combined_insn): Updated
        with the new names of the branch decrement patterns, and added the
        names of the branch decrement conditional patterns.

2018-01-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83563
        * graphite.c (canonicalize_loop_closed_ssa_form): Reset the SCEV
        cache.

2018-01-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/83713
        * convert.c (do_narrow): Properly guard TYPE_OVERFLOW_WRAPS checks.

2018-01-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/83685
        * tree-ssa-pre.c (create_expression_by_pieces): Do not insert
        references to abnormals.

2018-01-08  Richard Biener  <rguenther@suse.de>

        PR lto/83719
        * dwarf2out.c (output_indirect_strings): Handle empty
        skeleton_debug_str_hash.
        (dwarf2out_early_finish): Index strings for -gsplit-dwarf.

2018-01-08  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (TARGET_TRAMPOLINE_ADJUST_ADDRESS): Delete.
        (emit_store_direct): Likewise.
        (arc_trampoline_adjust_address): Likewise.
        (arc_asm_trampoline_template): New function.
        (arc_initialize_trampoline): Use asm_trampoline_template.
        (TARGET_ASM_TRAMPOLINE_TEMPLATE): Define.
        * config/arc/arc.h (TRAMPOLINE_SIZE): Adjust to 16.
        * config/arc/arc.md (flush_icache): Delete pattern.

2018-01-08  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-c.def (__ARC_UNALIGNED__): New define.
        * config/arc/arc.h (STRICT_ALIGNMENT): Control this macro using
        munaligned-access.

2018-01-08  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        PR target/83681
        * config/epiphany/epiphany.h (make_pass_mode_switch_use): Guard
        by not USED_FOR_TARGET.
        (make_pass_resolve_sw_modes): Likewise.

2018-01-08  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/nios2/nios2.h (nios2_section_threshold): Guard by not
        USED_FOR_TARGET.

2018-01-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/83580
        * tree-data-ref.c (split_constant_offset): Remove STRIP_NOPS.

2018-01-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/83517
        * match.pd ((t * 2) / 2) -> t): Add missing :c.

2018-01-06  Aldy Hernandez  <aldyh@redhat.com>

        PR middle-end/81897
        * tree-ssa-uninit.c (compute_control_dep_chain): Do not bail on
        basic blocks with a small number of successors.
        (convert_control_dep_chain_into_preds): Improve handling of
        forwarder blocks.
        (dump_predicates): Split apart into...
        (dump_pred_chain): ...here...
        (dump_pred_info): ...and here.
        (can_one_predicate_be_invalidated_p): Add debugging printfs.
        (can_chain_union_be_invalidated_p): Improve check for invalidation
        of paths.
        (uninit_uses_cannot_happen): Avoid unnecessary if
        convert_control_dep_chain_into_preds yielded nothing.

2018-01-06  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83640
        * gimple-ssa-warn-restrict.c (builtin_access::builtin_access): Avoid
        subtracting negative offset from size.
        (builtin_access::overlap): Adjust offset bounds of the access to fall
        within the size of the object if possible.

2018-01-06  Richard Sandiford  <richard.sandiford@linaro.org>

        PR rtl-optimization/83699
        * expmed.c (extract_bit_field_1): Restrict the vector usage of
        extract_bit_field_as_subreg to cases in which the extracted
        value is also a vector.

        * lra-constraints.c (process_alt_operands): Test for the equivalence
        substitutions when detecting a possible reload cycle.

2018-01-06  Jakub Jelinek  <jakub@redhat.com>

        PR debug/83480
        * toplev.c (process_options): Don't enable debug_nonbind_markers_p
        by default if flag_selective_schedling{,2}.  Formatting fixes.

        PR rtl-optimization/83682
        * rtl.h (const_vec_duplicate_p): Only return true for VEC_DUPLICATE
        if it has non-VECTOR_MODE element mode.
        (vec_duplicate_p): Likewise.

        PR middle-end/83694
        * cfgexpand.c (expand_debug_expr): Punt if mode1 is VOIDmode
        and bitsize might be greater than MAX_BITSIZE_MODE_ANY_INT.

2018-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR target/83604
        * config/i386/i386-builtin.def
        (__builtin_ia32_vgf2p8affineinvqb_v64qi,
        __builtin_ia32_vgf2p8affineqb_v64qi, __builtin_ia32_vgf2p8mulb_v64qi):
        Require also OPTION_MASK_ISA_AVX512F in addition to
        OPTION_MASK_ISA_GFNI.
        (__builtin_ia32_vgf2p8affineinvqb_v16qi_mask,
        __builtin_ia32_vgf2p8affineqb_v16qi_mask): Require
        OPTION_MASK_ISA_AVX512VL instead of OPTION_MASK_ISA_SSE in addition
        to OPTION_MASK_ISA_GFNI.
        (__builtin_ia32_vgf2p8mulb_v32qi_mask): Require
        OPTION_MASK_ISA_AVX512VL in addition to OPTION_MASK_ISA_GFNI and
        OPTION_MASK_ISA_AVX512BW.
        (__builtin_ia32_vgf2p8mulb_v16qi_mask): Require
        OPTION_MASK_ISA_AVX512VL instead of OPTION_MASK_ISA_AVX512BW in
        addition to OPTION_MASK_ISA_GFNI.
        (__builtin_ia32_vgf2p8affineinvqb_v16qi,
        __builtin_ia32_vgf2p8affineqb_v16qi, __builtin_ia32_vgf2p8mulb_v16qi):
        Require OPTION_MASK_ISA_SSE2 instead of OPTION_MASK_ISA_SSE in addition
        to OPTION_MASK_ISA_GFNI.
        * config/i386/i386.c (def_builtin): Change to builtin isa/isa2 being
        a requirement for all ISAs rather than any of them with a few
        exceptions.
        (ix86_add_new_builtins): Clear OPTION_MASK_ISA_64BIT from isa before
        processing.
        (ix86_expand_builtin): Require all ISAs from builtin's isa and isa2
        bitmasks to be enabled with 3 exceptions, instead of requiring any
        enabled ISA with lots of exceptions.
        * config/i386/sse.md (vgf2p8affineinvqb_<mode><mask_name>,
        vgf2p8affineqb_<mode><mask_name>, vgf2p8mulb_<mode><mask_name>):
        Change avx512bw in isa attribute to avx512f.
        * config/i386/sgxintrin.h: Add license boilerplate.
        * config/i386/vaesintrin.h: Likewise.  Fix macro spelling __AVX512F
        to __AVX512F__ and __AVX512VL to __AVX512VL__.
        (_mm256_aesdec_epi128, _mm256_aesdeclast_epi128, _mm256_aesenc_epi128,
        _mm256_aesenclast_epi128): Enable temporarily avx if __AVX__ is not
        defined.
        * config/i386/gfniintrin.h (_mm_gf2p8mul_epi8,
        _mm_gf2p8affineinv_epi64_epi8, _mm_gf2p8affine_epi64_epi8): Enable
        temporarily sse2 rather than sse if not enabled already.

        PR target/83604
        * config/i386/sse.md (VI248_VLBW): Rename to ...
        (VI248_AVX512VL): ... this.  Don't guard V32HI with TARGET_AVX512BW.
        (vpshrd_<mode><mask_name>, vpshld_<mode><mask_name>,
        vpshrdv_<mode>, vpshrdv_<mode>_mask, vpshrdv_<mode>_maskz,
        vpshrdv_<mode>_maskz_1, vpshldv_<mode>, vpshldv_<mode>_mask,
        vpshldv_<mode>_maskz, vpshldv_<mode>_maskz_1): Use VI248_AVX512VL
        mode iterator instead of VI248_VLBW.

2018-01-05  Jan Hubicka  <hubicka@ucw.cz>

        * ipa-fnsummary.c (record_modified_bb_info): Add OP.
        (record_modified): Skip clobbers; add debug output.
        (param_change_prob): Use sreal frequencies.

2018-01-05  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-data-refs.c (vect_compute_data_ref_alignment): Don't
        punt for user-aligned variables.

2018-01-05  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-chrec.c (chrec_contains_symbols): Return true for
        POLY_INT_CST.

2018-01-05  Sudakshina Das  <sudi.das@arm.com>

        PR target/82439
        * simplify-rtx.c (simplify_relational_operation_1): Add simplifications
        of (x|y) == x for BICS pattern.

2018-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/83605
        * gimple-ssa-strength-reduction.c: Include tree-eh.h.
        (find_candidates_dom_walker::before_dom_children): Ignore stmts that
        can throw.

2018-01-05  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config.gcc (epiphany-*-elf*): Add (epiphany-*-rtems*) configuration.
        * config/epiphany/rtems.h: New file.

2018-01-04  Jakub Jelinek  <jakub@redhat.com>
            Uros Bizjak  <ubizjak@gmail.com>

        PR target/83554
        * config/i386/i386.md (*<rotate_insn>hi3_1 splitter): Use
        QIreg_operand instead of register_operand predicate.
        * config/i386/i386.c (ix86_rop_should_change_byte_p,
        set_rop_modrm_reg_bits, ix86_mitigate_rop): Use -mmitigate-rop in
        comments instead of -fmitigate[-_]rop.

2018-01-04  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR bootstrap/81926
        * cgraphunit.c (symbol_table::compile): Switch to text_section
        before calling assembly_start debug hook.
        * run-rtl-passes.c (run_rtl_passes): Likewise.
        Include output.h.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vrp.c (extract_range_from_binary_expr_1): Check
        range_int_cst_p rather than !symbolic_range_p before calling
        extract_range_from_multiplicative_op_1.

2018-01-04  Jeff Law  <law@redhat.com>

        * tree-ssa-math-opts.c (execute_cse_reciprocals_1): Remove
        redundant test in assertion.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/rtl.texi: Document machine_mode wrapper classes.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

        * fold-const.c (fold_ternary_loc): Check tree_fits_uhwi_p before
        using tree_to_uhwi.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-ssa-forwprop.c (is_combined_permutation_identity): Allow
        the VEC_PERM_EXPR fold to fail.

2018-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR debug/83585
        * bb-reorder.c (insert_section_boundary_note): Set has_bb_partition
        to switched_sections.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

        PR target/83680
        * config/arm/arm.c (arm_vectorize_vec_perm_const): Fix inverted
        test for d.testing.

2018-01-04  Peter Bergner  <bergner@vnet.ibm.com>

        PR target/83387
        * config/rs6000/rs6000.c (rs6000_discover_homogeneous_aggregate): Do not
        allow arguments in FP registers if TARGET_HARD_FLOAT is false.

2018-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR debug/83666
        * cfgexpand.c (expand_debug_expr) <case BIT_FIELD_REF>: Punt if mode
        is BLKmode and bitpos not zero or mode change is needed.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

        PR target/83675
        * config/sparc/sparc.c (sparc_vectorize_vec_perm_const): Require
        TARGET_VIS2.

2018-01-04  Uros Bizjak  <ubizjak@gmail.com>

        PR target/83628
        * config/alpha/alpha.md (*sadd<modesuffix>): Use ASHIFT
        instead of MULT rtx.  Update all corresponding splitters.
        (*saddl_se): Ditto.
        (*ssub<modesuffix>): Ditto.
        (*ssubl_se): Ditto.
        (*cmp_sadd_di): Update split patterns.
        (*cmp_sadd_si): Ditto.
        (*cmp_sadd_sidi): Ditto.
        (*cmp_ssub_di): Ditto.
        (*cmp_ssub_si): Ditto.
        (*cmp_ssub_sidi): Ditto.
        * config/alpha/predicates.md (const23_operand): New predicate.
        * config/alpha/alpha.c (alpha_rtx_costs) [PLUS, MINUS]:
        Look for ASHIFT, not MULT inner operand.
        (alpha_split_conditional_move): Update for *sadd<modesuffix> change.

2018-01-04  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/83669
        * gcov.c (output_intermediate_file): Add version to intermediate
        gcov file.
        * doc/gcov.texi: Document new field 'version' in intermediate
        file format. Fix location of '-k' option of gcov command.

2018-01-04  Martin Liska  <mliska@suse.cz>

        PR ipa/82352
        * ipa-icf.c (sem_function::merge): Do not cross comdat boundary.

2018-01-04  Jakub Jelinek  <jakub@redhat.com>

        * gimple-ssa-sprintf.c (parse_directive): Cast second dir.len to uhwi.

2018-01-03  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83655
        * gimple-ssa-warn-restrict.c (wrestrict_dom_walker::check_call): Avoid
        checking calls with invalid arguments.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-stmts.c (vect_get_store_rhs): New function.
        (vectorizable_mask_load_store): Delete.
        (vectorizable_call): Return false for masked loads and stores.
        (vectorizable_store): Handle IFN_MASK_STORE.  Use vect_get_store_rhs
        instead of gimple_assign_rhs1.
        (vectorizable_load): Handle IFN_MASK_LOAD.
        (vect_transform_stmt): Don't set is_store for call_vec_info_type.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-stmts.c (vect_build_gather_load_calls): New function,
        split out from..,
        (vectorizable_mask_load_store): ...here.
        (vectorizable_load): ...and here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-stmts.c (vect_build_all_ones_mask)
        (vect_build_zero_merge_argument): New functions, split out from...
        (vectorizable_load): ...here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-stmts.c (vect_check_store_rhs): New function,
        split out from...
        (vectorizable_mask_load_store): ...here.
        (vectorizable_store): ...and here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-stmts.c (vect_check_load_store_mask): New function,
        split out from...
        (vectorizable_mask_load_store): ...here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vectorizer.h (vec_load_store_type): Moved from tree-vec-stmts.c
        (vect_model_store_cost): Take a vec_load_store_type instead of a
        vect_def_type.
        * tree-vect-stmts.c (vec_load_store_type): Move to tree-vectorizer.h.
        (vect_model_store_cost): Take a vec_load_store_type instead of a
        vect_def_type.
        (vectorizable_mask_load_store): Update accordingly.
        (vectorizable_store): Likewise.
        * tree-vect-slp.c (vect_analyze_slp_cost_1): Update accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-loop.c (vect_transform_loop): Stub out scalar
        IFN_MASK_LOAD calls here rather than...
        * tree-vect-stmts.c (vectorizable_mask_load_store): ...here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * expmed.c (extract_bit_field_1): For vector extracts,
        fall back to extract_bit_field_as_subreg if vec_extract
        isn't available.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * lra-spills.c (pseudo_reg_slot_compare): Sort slots by whether
        they are variable or constant sized.
        (assign_stack_slot_num_and_sort_pseudos): Don't reuse variable-sized
        slots for constant-sized data.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-patterns.c (vect_recog_mask_conversion_pattern): When
        handling COND_EXPRs with boolean comparisons, try to find a better
        basis for the mask type than the boolean itself.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/rtl.texi (MAX_BITSIZE_MODE_ANY_MODE): Describe how the default
        is calculated and how it can be overridden.
        * genmodes.c (max_bitsize_mode_any_mode): New variable.
        (create_modes): Initialize it from MAX_BITSIZE_MODE_ANY_MODE,
        if defined.
        (emit_max_int): Use it to set the output MAX_BITSIZE_MODE_ANY_MODE,
        if nonzero.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/aarch64/aarch64-protos.h (aarch64_output_simd_mov_immediate):
        Remove the mode argument.
        (aarch64_simd_valid_immediate): Remove the mode and inverse
        arguments.
        * config/aarch64/iterators.md (bitsize): New iterator.
        * config/aarch64/aarch64-simd.md (*aarch64_simd_mov<mode>, and<mode>3)
        (ior<mode>3): Update calls to aarch64_output_simd_mov_immediate.
        * config/aarch64/constraints.md (Do, Db, Dn): Update calls to
        aarch64_simd_valid_immediate.
        * config/aarch64/predicates.md (aarch64_reg_or_orr_imm): Likewise.
        (aarch64_reg_or_bic_imm): Likewise.
        * config/aarch64/aarch64.c (simd_immediate_info): Replace mvn
        with an insn_type enum and msl with a modifier_type enum.
        Replace element_width with a scalar_mode.  Change the shift
        to unsigned int.  Add constructors for scalar_float_mode and
        scalar_int_mode elements.
        (aarch64_vect_float_const_representable_p): Delete.
        (aarch64_can_const_movi_rtx_p)
        (aarch64_simd_scalar_immediate_valid_for_move)
        (aarch64_simd_make_constant): Update call to
        aarch64_simd_valid_immediate.
        (aarch64_advsimd_valid_immediate_hs): New function.
        (aarch64_advsimd_valid_immediate): Likewise.
        (aarch64_simd_valid_immediate): Remove mode and inverse
        arguments.  Rewrite to use the above.  Use const_vec_duplicate_p
        to detect duplicated constants and use aarch64_float_const_zero_rtx_p
        and aarch64_float_const_representable_p on the result.
        (aarch64_output_simd_mov_immediate): Remove mode argument.
        Update call to aarch64_simd_valid_immediate and use of
        simd_immediate_info.
        (aarch64_output_scalar_simd_mov_immediate): Update call
        accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * machmode.h (mode_precision): Prefix with CONST_MODE_PRECISION.
        (mode_nunits): Likewise CONST_MODE_NUNITS.
        * machmode.def (ADJUST_NUNITS): Document.
        * genmodes.c (mode_data::need_nunits_adj): New field.
        (blank_mode): Update accordingly.
        (adj_nunits): New variable.
        (print_maybe_const_decl): Replace CATEGORY with a NEEDS_ADJ
        parameter.
        (emit_mode_size_inline): Set need_bytesize_adj for all modes
        listed in adj_nunits.
        (emit_mode_nunits_inline): Set need_nunits_adj for all modes
        listed in adj_nunits.  Don't emit case statements for such modes.
        (emit_insn_modes_h): Emit definitions of CONST_MODE_NUNITS
        and CONST_MODE_PRECISION.  Make CONST_MODE_SIZE expand to
        nothing if adj_nunits is nonnull.
        (emit_mode_precision, emit_mode_nunits): Use print_maybe_const_decl.
        (emit_mode_unit_size, emit_mode_base_align, emit_mode_ibit)
        (emit_mode_fbit): Update use of print_maybe_const_decl.
        (emit_move_size): Likewise.  Treat the array as non-const
        if adj_nunits.
        (emit_mode_adjustments): Handle adj_nunits.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * machmode.def (VECTOR_MODES_WITH_PREFIX): Document.
        * genmodes.c (VECTOR_MODES_WITH_PREFIX): New macro.
        (VECTOR_MODES): Use it.
        (make_vector_modes): Take the prefix as an argument.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * mode-classes.def (MODE_VECTOR_BOOL): New mode class.
        * machmode.h (INTEGRAL_MODE_P, VECTOR_MODE_P): Return true
        for MODE_VECTOR_BOOL.
        * machmode.def (VECTOR_BOOL_MODE): Document.
        * genmodes.c (VECTOR_BOOL_MODE): New macro.
        (make_vector_bool_mode): New function.
        (complete_mode, emit_mode_wider, emit_mode_adjustments): Handle
        MODE_VECTOR_BOOL.
        * lto-streamer-in.c (lto_input_mode_table): Likewise.
        * rtx-vector-builder.c (rtx_vector_builder::find_cached_value):
        Likewise.
        * stor-layout.c (int_mode_for_mode): Likewise.
        * tree.c (build_vector_type_for_mode): Likewise.
        * varasm.c (output_constant_pool_2): Likewise.
        * emit-rtl.c (init_emit_once): Make sure that CONST1_RTX (BImode) and
        CONSTM1_RTX (BImode) are the same thing.  Initialize const_tiny_rtx
        for MODE_VECTOR_BOOL.
        * expr.c (expand_expr_real_1): Use VECTOR_MODE_P instead of a list
        of mode class checks.
        * tree-vect-generic.c (expand_vector_operation): Use VECTOR_MODE_P
        instead of a list of mode class checks.
        (expand_vector_scalar_condition): Likewise.
        (type_for_widest_vector_mode): Handle BImode as an inner mode.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * machmode.h (mode_size): Change from unsigned short to
        poly_uint16_pod.
        (mode_to_bytes): Return a poly_uint16 rather than an unsigned short.
        (GET_MODE_SIZE): Return a constant if ONLY_FIXED_SIZE_MODES,
        or if measurement_type is not polynomial.
        (fixed_size_mode::includes_p): Check for constant-sized modes.
        * genmodes.c (emit_mode_size_inline): Make mode_size_inline
        return a poly_uint16 rather than an unsigned short.
        (emit_mode_size): Change the type of mode_size from unsigned short
        to poly_uint16_pod.  Use ZERO_COEFFS for the initializer.
        (emit_mode_adjustments): Cope with polynomial vector sizes.
        * lto-streamer-in.c (lto_input_mode_table): Use bp_unpack_poly_value
        for GET_MODE_SIZE.
        * lto-streamer-out.c (lto_write_mode_table): Use bp_pack_poly_value
        for GET_MODE_SIZE.
        * auto-inc-dec.c (try_merge): Treat GET_MODE_SIZE as polynomial.
        * builtins.c (expand_ifn_atomic_compare_exchange_into_call): Likewise.
        * caller-save.c (setup_save_areas): Likewise.
        (replace_reg_with_saved_mem): Likewise.
        * calls.c (emit_library_call_value_1): Likewise.
        * combine-stack-adj.c (combine_stack_adjustments_for_block): Likewise.
        * combine.c (simplify_set, make_extraction, simplify_shift_const_1)
        (gen_lowpart_for_combine): Likewise.
        * convert.c (convert_to_integer_1): Likewise.
        * cse.c (equiv_constant, cse_insn): Likewise.
        * cselib.c (autoinc_split, cselib_hash_rtx): Likewise.
        (cselib_subst_to_values): Likewise.
        * dce.c (word_dce_process_block): Likewise.
        * df-problems.c (df_word_lr_mark_ref): Likewise.
        * dwarf2cfi.c (init_one_dwarf_reg_size): Likewise.
        * dwarf2out.c (multiple_reg_loc_descriptor, mem_loc_descriptor)
        (concat_loc_descriptor, concatn_loc_descriptor, loc_descriptor)
        (rtl_for_decl_location): Likewise.
        * emit-rtl.c (gen_highpart, widen_memory_access): Likewise.
        * expmed.c (extract_bit_field_1, extract_integral_bit_field): Likewise.
        * expr.c (emit_group_load_1, clear_storage_hints): Likewise.
        (emit_move_complex, emit_move_multi_word, emit_push_insn): Likewise.
        (expand_expr_real_1): Likewise.
        * function.c (assign_parm_setup_block_p, assign_parm_setup_block)
        (pad_below): Likewise.
        * gimple-fold.c (optimize_atomic_compare_exchange_p): Likewise.
        * gimple-ssa-store-merging.c (rhs_valid_for_store_merging_p): Likewise.
        * ira.c (get_subreg_tracking_sizes): Likewise.
        * ira-build.c (ira_create_allocno_objects): Likewise.
        * ira-color.c (coalesced_pseudo_reg_slot_compare): Likewise.
        (ira_sort_regnos_for_alter_reg): Likewise.
        * ira-costs.c (record_operand_costs): Likewise.
        * lower-subreg.c (interesting_mode_p, simplify_gen_subreg_concatn)
        (resolve_simple_move): Likewise.
        * lra-constraints.c (get_reload_reg, operands_match_p): Likewise.
        (process_addr_reg, simplify_operand_subreg, curr_insn_transform)
        (lra_constraints): Likewise.
        (CONST_POOL_OK_P): Reject variable-sized modes.
        * lra-spills.c (slot, assign_mem_slot, pseudo_reg_slot_compare)
        (add_pseudo_to_slot, lra_spill): Likewise.
        * omp-low.c (omp_clause_aligned_alignment): Likewise.
        * optabs-query.c (get_best_extraction_insn): Likewise.
        * optabs-tree.c (expand_vec_cond_expr_p): Likewise.
        * optabs.c (expand_vec_perm_var, expand_vec_cond_expr): Likewise.
        (expand_mult_highpart, valid_multiword_target_p): Likewise.
        * recog.c (offsettable_address_addr_space_p): Likewise.
        * regcprop.c (maybe_mode_change): Likewise.
        * reginfo.c (choose_hard_reg_mode, record_subregs_of_mode): Likewise.
        * regrename.c (build_def_use): Likewise.
        * regstat.c (dump_reg_info): Likewise.
        * reload.c (complex_word_subreg_p, push_reload, find_dummy_reload)
        (find_reloads, find_reloads_subreg_address): Likewise.
        * reload1.c (eliminate_regs_1): Likewise.
        * rtlanal.c (for_each_inc_dec_find_inc_dec, rtx_cost): Likewise.
        * simplify-rtx.c (avoid_constant_pool_reference): Likewise.
        (simplify_binary_operation_1, simplify_subreg): Likewise.
        * targhooks.c (default_function_arg_padding): Likewise.
        (default_hard_regno_nregs, default_class_max_nregs): Likewise.
        * tree-cfg.c (verify_gimple_assign_binary): Likewise.
        (verify_gimple_assign_ternary): Likewise.
        * tree-inline.c (estimate_move_cost): Likewise.
        * tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
        * tree-ssa-loop-ivopts.c (add_autoinc_candidates): Likewise.
        (get_address_cost_ainc): Likewise.
        * tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Likewise.
        (vect_supportable_dr_alignment): Likewise.
        * tree-vect-loop.c (vect_determine_vectorization_factor): Likewise.
        (vectorizable_reduction): Likewise.
        * tree-vect-stmts.c (vectorizable_assignment, vectorizable_shift)
        (vectorizable_operation, vectorizable_load): Likewise.
        * tree.c (build_same_sized_truth_vector_type): Likewise.
        * valtrack.c (cleanup_auto_inc_dec): Likewise.
        * var-tracking.c (emit_note_insn_var_location): Likewise.
        * config/arc/arc.h (ASM_OUTPUT_CASE_END): Use as_a <scalar_int_mode>.
        (ADDR_VEC_ALIGN): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * machmode.h (mode_to_bits): Return a poly_uint16 rather than an
        unsigned short.
        (GET_MODE_BITSIZE): Return a constant if ONLY_FIXED_SIZE_MODES,
        or if measurement_type is polynomial.
        * calls.c (shift_return_value): Treat GET_MODE_BITSIZE as polynomial.
        * combine.c (make_extraction): Likewise.
        * dse.c (find_shift_sequence): Likewise.
        * dwarf2out.c (mem_loc_descriptor): Likewise.
        * expmed.c (store_integral_bit_field, extract_bit_field_1): Likewise.
        (extract_bit_field, extract_low_bits): Likewise.
        * expr.c (convert_move, convert_modes, emit_move_insn_1): Likewise.
        (optimize_bitfield_assignment_op, expand_assignment): Likewise.
        (store_expr_with_bounds, store_field, expand_expr_real_1): Likewise.
        * fold-const.c (optimize_bit_field_compare, merge_ranges): Likewise.
        * gimple-fold.c (optimize_atomic_compare_exchange_p): Likewise.
        * reload.c (find_reloads): Likewise.
        * reload1.c (alter_reg): Likewise.
        * stor-layout.c (bitwise_mode_for_mode, compute_record_mode): Likewise.
        * targhooks.c (default_secondary_memory_needed_mode): Likewise.
        * tree-if-conv.c (predicate_mem_writes): Likewise.
        * tree-ssa-strlen.c (handle_builtin_memcmp): Likewise.
        * tree-vect-patterns.c (adjust_bool_pattern): Likewise.
        * tree-vect-stmts.c (vectorizable_simd_clone_call): Likewise.
        * valtrack.c (dead_debug_insert_temp): Likewise.
        * varasm.c (mergeable_constant_section): Likewise.
        * config/sh/sh.h (LOCAL_ALIGNMENT): Use as_a <fixed_size_mode>.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * expr.c (expand_assignment): Cope with polynomial mode sizes
        when assigning to a CONCAT.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * machmode.h (mode_precision): Change from unsigned short to
        poly_uint16_pod.
        (mode_to_precision): Return a poly_uint16 rather than an unsigned
        short.
        (GET_MODE_PRECISION): Return a constant if ONLY_FIXED_SIZE_MODES,
        or if measurement_type is not polynomial.
        (HWI_COMPUTABLE_MODE_P): Turn into a function.  Optimize the case
        in which the mode is already known to be a scalar_int_mode.
        * genmodes.c (emit_mode_precision): Change the type of mode_precision
        from unsigned short to poly_uint16_pod.  Use ZERO_COEFFS for the
        initializer.
        * lto-streamer-in.c (lto_input_mode_table): Use bp_unpack_poly_value
        for GET_MODE_PRECISION.
        * lto-streamer-out.c (lto_write_mode_table): Use bp_pack_poly_value
        for GET_MODE_PRECISION.
        * combine.c (update_rsp_from_reg_equal): Treat GET_MODE_PRECISION
        as polynomial.
        (try_combine, find_split_point, combine_simplify_rtx): Likewise.
        (expand_field_assignment, make_extraction): Likewise.
        (make_compound_operation_int, record_dead_and_set_regs_1): Likewise.
        (get_last_value): Likewise.
        * convert.c (convert_to_integer_1): Likewise.
        * cse.c (cse_insn): Likewise.
        * expr.c (expand_expr_real_1): Likewise.
        * lra-constraints.c (simplify_operand_subreg): Likewise.
        * optabs-query.c (can_atomic_load_p): Likewise.
        * optabs.c (expand_atomic_load): Likewise.
        (expand_atomic_store): Likewise.
        * ree.c (combine_reaching_defs): Likewise.
        * rtl.h (partial_subreg_p, paradoxical_subreg_p): Likewise.
        * rtlanal.c (nonzero_bits1, lsb_bitfield_op_p): Likewise.
        * tree.h (type_has_mode_precision_p): Likewise.
        * ubsan.c (instrument_si_overflow): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree.h (TYPE_VECTOR_SUBPARTS): Turn into a function and handle
        polynomial numbers of units.
        (SET_TYPE_VECTOR_SUBPARTS): Likewise.
        (valid_vector_subparts_p): New function.
        (build_vector_type): Remove temporary shim and take the number
        of units as a poly_uint64 rather than an int.
        (build_opaque_vector_type): Take the number of units as a
        poly_uint64 rather than an int.
        * tree.c (build_vector_from_ctor): Handle polynomial
        TYPE_VECTOR_SUBPARTS.
        (type_hash_canon_hash, type_cache_hasher::equal): Likewise.
        (uniform_vector_p, vector_type_mode, build_vector): Likewise.
        (build_vector_from_val): If the number of units is variable,
        use build_vec_duplicate_cst for constant operands and
        VEC_DUPLICATE_EXPR otherwise.
        (make_vector_type): Remove temporary is_constant ().
        (build_vector_type, build_opaque_vector_type): Take the number of
        units as a poly_uint64 rather than an int.
        (check_vector_cst): Handle polynomial TYPE_VECTOR_SUBPARTS and
        VECTOR_CST_NELTS.
        * cfgexpand.c (expand_debug_expr): Likewise.
        * expr.c (count_type_elements, categorize_ctor_elements_1): Likewise.
        (store_constructor, expand_expr_real_1): Likewise.
        (const_scalar_mask_from_tree): Likewise.
        * fold-const-call.c (fold_const_reduction): Likewise.
        * fold-const.c (const_binop, const_unop, fold_convert_const): Likewise.
        (operand_equal_p, fold_vec_perm, fold_ternary_loc): Likewise.
        (native_encode_vector, vec_cst_ctor_to_array): Likewise.
        (fold_relational_const): Likewise.
        (native_interpret_vector): Likewise.  Change the size from an
        int to an unsigned int.
        * gimple-fold.c (gimple_fold_stmt_to_constant_1): Handle polynomial
        TYPE_VECTOR_SUBPARTS.
        (gimple_fold_indirect_ref, gimple_build_vector): Likewise.
        (gimple_build_vector_from_val): Use VEC_DUPLICATE_EXPR when
        duplicating a non-constant operand into a variable-length vector.
        * hsa-brig.c (hsa_op_immed::emit_to_buffer): Handle polynomial
        TYPE_VECTOR_SUBPARTS and VECTOR_CST_NELTS.
        * ipa-icf.c (sem_variable::equals): Likewise.
        * match.pd: Likewise.
        * omp-simd-clone.c (simd_clone_subparts): Likewise.
        * print-tree.c (print_node): Likewise.
        * stor-layout.c (layout_type): Likewise.
        * targhooks.c (default_builtin_vectorization_cost): Likewise.
        * tree-cfg.c (verify_gimple_comparison): Likewise.
        (verify_gimple_assign_binary): Likewise.
        (verify_gimple_assign_ternary): Likewise.
        (verify_gimple_assign_single): Likewise.
        * tree-pretty-print.c (dump_generic_node): Likewise.
        * tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
        (simplify_bitfield_ref, is_combined_permutation_identity): Likewise.
        * tree-vect-data-refs.c (vect_permute_store_chain): Likewise.
        (vect_grouped_load_supported, vect_permute_load_chain): Likewise.
        (vect_shift_permute_load_chain): Likewise.
        * tree-vect-generic.c (nunits_for_known_piecewise_op): Likewise.
        (expand_vector_condition, optimize_vector_constructor): Likewise.
        (lower_vec_perm, get_compute_type): Likewise.
        * tree-vect-loop.c (vect_determine_vectorization_factor): Likewise.
        (get_initial_defs_for_reduction, vect_transform_loop): Likewise.
        * tree-vect-patterns.c (vect_recog_bool_pattern): Likewise.
        (vect_recog_mask_conversion_pattern): Likewise.
        * tree-vect-slp.c (vect_supported_load_permutation_p): Likewise.
        (vect_get_constant_vectors, vect_transform_slp_perm_load): Likewise.
        * tree-vect-stmts.c (perm_mask_for_reverse): Likewise.
        (get_group_load_store_type, vectorizable_mask_load_store): Likewise.
        (vectorizable_bswap, simd_clone_subparts, vectorizable_assignment)
        (vectorizable_shift, vectorizable_operation, vectorizable_store)
        (vectorizable_load, vect_is_simple_cond, vectorizable_comparison)
        (supportable_widening_operation): Likewise.
        (supportable_narrowing_operation): Likewise.
        * tree-vector-builder.c (tree_vector_builder::binary_encoded_nelts):
        Likewise.
        * varasm.c (output_constant): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-data-refs.c (vect_permute_store_chain): Reorganize
        so that both the length == 3 and length != 3 cases set up their
        own permute vectors.  Add comments explaining why we know the
        number of elements is constant.
        (vect_permute_load_chain): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * machmode.h (mode_nunits): Change from unsigned char to
        poly_uint16_pod.
        (ONLY_FIXED_SIZE_MODES): New macro.
        (pod_mode::measurement_type, scalar_int_mode::measurement_type)
        (scalar_float_mode::measurement_type, scalar_mode::measurement_type)
        (complex_mode::measurement_type, fixed_size_mode::measurement_type):
        New typedefs.
        (mode_to_nunits): Return a poly_uint16 rather than an unsigned short.
        (GET_MODE_NUNITS): Return a constant if ONLY_FIXED_SIZE_MODES,
        or if measurement_type is not polynomial.
        * genmodes.c (ZERO_COEFFS): New macro.
        (emit_mode_nunits_inline): Make mode_nunits_inline return a
        poly_uint16.
        (emit_mode_nunits): Change the type of mode_nunits to poly_uint16_pod.
        Use ZERO_COEFFS when emitting initializers.
        * data-streamer.h (bp_pack_poly_value): New function.
        (bp_unpack_poly_value): Likewise.
        * lto-streamer-in.c (lto_input_mode_table): Use bp_unpack_poly_value
        for GET_MODE_NUNITS.
        * lto-streamer-out.c (lto_write_mode_table): Use bp_pack_poly_value
        for GET_MODE_NUNITS.
        * tree.c (make_vector_type): Remove temporary shim and make
        the real function take the number of units as a poly_uint64
        rather than an int.
        (build_vector_type_for_mode): Handle polynomial nunits.
        * dwarf2out.c (loc_descriptor, add_const_value_attribute): Likewise.
        * emit-rtl.c (const_vec_series_p_1): Likewise.
        (gen_rtx_CONST_VECTOR): Likewise.
        * fold-const.c (test_vec_duplicate_folding): Likewise.
        * genrecog.c (validate_pattern): Likewise.
        * optabs-query.c (can_vec_perm_var_p, can_mult_highpart_p): Likewise.
        * optabs-tree.c (expand_vec_cond_expr_p): Likewise.
        * optabs.c (expand_vector_broadcast, expand_binop_directly): Likewise.
        (shift_amt_for_vec_perm_mask, expand_vec_perm_var): Likewise.
        (expand_vec_cond_expr, expand_mult_highpart): Likewise.
        * rtlanal.c (subreg_get_info): Likewise.
        * tree-vect-data-refs.c (vect_grouped_store_supported): Likewise.
        (vect_grouped_load_supported): Likewise.
        * tree-vect-generic.c (type_for_widest_vector_mode): Likewise.
        * tree-vect-loop.c (have_whole_vector_shift): Likewise.
        * simplify-rtx.c (simplify_unary_operation_1): Likewise.
        (simplify_const_unary_operation, simplify_binary_operation_1)
        (simplify_const_binary_operation, simplify_ternary_operation)
        (test_vector_ops_duplicate, test_vector_ops): Likewise.
        (simplify_immed_subreg): Use GET_MODE_NUNITS on a fixed_size_mode
        instead of CONST_VECTOR_NUNITS.
        * varasm.c (output_constant_pool_2): Likewise.
        * rtx-vector-builder.c (rtx_vector_builder::build): Only include the
        explicit-encoded elements in the XVEC for variable-length vectors.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * lra-constraints.c (curr_insn_transform): Use partial_subreg_p.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * coretypes.h (fixed_size_mode): Declare.
        (fixed_size_mode_pod): New typedef.
        * builtins.h (target_builtins::x_apply_args_mode)
        (target_builtins::x_apply_result_mode): Change type to
        fixed_size_mode_pod.
        * builtins.c (apply_args_size, apply_result_size, result_vector)
        (expand_builtin_apply_args_1, expand_builtin_apply)
        (expand_builtin_return): Update accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * cse.c (hash_rtx_cb): Hash only the encoded elements.
        * cselib.c (cselib_hash_rtx): Likewise.
        * expmed.c (make_tree): Build VECTOR_CSTs directly from the
        CONST_VECTOR encoding.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>
            Jeff Law  <law@redhat.com>

        PR target/83641
        * config/i386/i386.c (ix86_adjust_stack_and_probe_stack_clash): For
        noreturn probe, use gen_pop instead of ix86_emit_restore_reg_using_pop,
        only set RTX_FRAME_RELATED_P on both the push and pop if cfa_reg is sp
        and add REG_CFA_ADJUST_CFA notes in that case to both insns.

        PR target/83641
        * config/i386/i386.c (ix86_adjust_stack_and_probe_stack_clash): Do not
        explicitly probe *sp in a noreturn function if there were any callee
        register saves or frame pointer is needed.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR debug/83621
        * cfgexpand.c (expand_debug_expr): Return NULL if mode is
        BLKmode for ternary, binary or unary expressions.

        PR debug/83645
        * var-tracking.c (delete_vta_debug_insn): New inline function.
        (delete_vta_debug_insns): Add USE_CFG argument, if true, walk just
        insns from get_insns () to NULL instead of each bb separately.
        Use delete_vta_debug_insn.  No longer static.
        (vt_debug_insns_local, variable_tracking_main_1): Adjust
        delete_vta_debug_insns callers.
        * rtl.h (delete_vta_debug_insns): Declare.
        * final.c (rest_of_handle_final): Call delete_vta_debug_insns
        instead of variable_tracking_main.

2018-01-03  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/83603
        * calls.c (maybe_warn_nonstring_arg): Avoid accessing function
        arguments past the endof the argument list in functions declared
        without a prototype.
        * gimple-ssa-warn-restrict.c (wrestrict_dom_walker::check_call):
        Avoid checking when arguments are null.

2018-01-03  Martin Sebor  <msebor@redhat.com>

        PR c/83559
        * doc/extend.texi (attribute const): Fix a typo.
        * ipa-pure-const.c ((warn_function_const, warn_function_pure): Avoid
        issuing -Wsuggest-attribute for void functions.

2018-01-03  Martin Sebor  <msebor@redhat.com>

        * gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): Use
        offset_int::from instead of wide_int::to_shwi.
        (maybe_diag_overlap): Remove assertion.
        Use HOST_WIDE_INT_PRINT_DEC instead of %lli.
        * gimple-ssa-sprintf.c (format_directive): Same.
        (parse_directive): Same.
        (sprintf_dom_walker::compute_format_length): Same.
        (try_substitute_return_value): Same.

2018-01-03  Jeff Law  <law@redhat.com>

        PR middle-end/83654
        * explow.c (anti_adjust_stack_and_probe_stack_clash): Test a
        non-constant residual for zero at runtime and avoid probing in
        that case.  Reorganize code for trailing problem to mirror handling
        of the residual.

2018-01-03  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR tree-optimization/83501
        * tree-ssa-strlen.c (get_string_cst): New.
        (handle_char_store): Call get_string_cst.

2018-01-03  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/83593
        * tree-ssa-strlen.c: Include tree-cfg.h.
        (strlen_check_and_optimize_stmt): Add new argument cleanup_eh.
        (strlen_dom_walker): Add new member variable m_cleanup_cfg.
        (strlen_dom_walker::strlen_dom_walker): Initialize m_cleanup_cfg
        to false.
        (strlen_dom_walker::before_dom_children): Call
        gimple_purge_dead_eh_edges. Dump tranformation with details
        dump flags.
        (strlen_dom_walker::before_dom_children): Update call by adding
        new argument cleanup_eh.
        (pass_strlen::execute): Return TODO_cleanup_cfg if needed.

2018-01-03  Martin Liska  <mliska@suse.cz>

        PR ipa/83549
        * cif-code.def (VARIADIC_THUNK): New enum value.
        * ipa-fnsummary.c (compute_fn_summary): Do not inline variadic
        thunks.

2018-01-03  Jan Beulich  <jbeulich@suse.com>

        * sse.md (mov<mode>_internal): Tighten condition for when to use
        vmovdqu<ssescalarsize> for TI and OI modes.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

        Update copyright years.

2018-01-03  Martin Liska  <mliska@suse.cz>

        PR ipa/83594
        * ipa-visibility.c (function_and_variable_visibility): Skip
        functions with noipa attribure.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

        * gcc.c (process_command): Update copyright notice dates.
        * gcov-dump.c (print_version): Ditto.
        * gcov.c (print_version): Ditto.
        * gcov-tool.c (print_version): Ditto.
        * gengtype.c (create_file): Ditto.
        * doc/cpp.texi: Bump @copying's copyright year.
        * doc/cppinternals.texi: Ditto.
        * doc/gcc.texi: Ditto.
        * doc/gccint.texi: Ditto.
        * doc/gcov.texi: Ditto.
        * doc/install.texi: Ditto.
        * doc/invoke.texi: Ditto.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * vector-builder.h (vector_builder::m_full_nelts): Change from
        unsigned int to poly_uint64.
        (vector_builder::full_nelts): Update prototype accordingly.
        (vector_builder::new_vector): Likewise.
        (vector_builder::encoded_full_vector_p): Handle polynomial full_nelts.
        (vector_builder::operator ==): Likewise.
        (vector_builder::finalize): Likewise.
        * int-vector-builder.h (int_vector_builder::int_vector_builder):
        Take the number of elements as a poly_uint64 rather than an
        unsigned int.
        * vec-perm-indices.h (vec_perm_indices::m_nelts_per_input): Change
        from unsigned int to poly_uint64.
        (vec_perm_indices::vec_perm_indices): Update prototype accordingly.
        (vec_perm_indices::new_vector): Likewise.
        (vec_perm_indices::length): Likewise.
        (vec_perm_indices::nelts_per_input): Likewise.
        (vec_perm_indices::input_nelts): Likewise.
        * vec-perm-indices.c (vec_perm_indices::new_vector): Take the
        number of elements per input as a poly_uint64 rather than an
        unsigned int.  Use the original encoding for variable-length
        vectors, rather than clamping each individual element.
        For the second and subsequent elements in each pattern,
        clamp the step and base before clamping their sum.
        (vec_perm_indices::series_p): Handle polynomial element counts.
        (vec_perm_indices::all_in_range_p): Likewise.
        (vec_perm_indices_to_tree): Likewise.
        (vec_perm_indices_to_rtx): Likewise.
        * tree-vect-stmts.c (vect_gen_perm_mask_any): Likewise.
        * tree-vector-builder.c (tree_vector_builder::new_unary_operation)
        (tree_vector_builder::new_binary_operation): Handle polynomial
        element counts.  Return false if we need to know the number
        of elements at compile time.
        * fold-const.c (fold_vec_perm): Punt if the number of elements
        isn't known at compile time.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * vec-perm-indices.h (vec_perm_builder): Change element type
        from HOST_WIDE_INT to poly_int64.
        (vec_perm_indices::element_type): Update accordingly.
        (vec_perm_indices::clamp): Handle polynomial element_types.
        * vec-perm-indices.c (vec_perm_indices::series_p): Likewise.
        (vec_perm_indices::all_in_range_p): Likewise.
        (tree_to_vec_perm_builder): Check for poly_int64 trees rather
        than shwi trees.
        * vector-builder.h (vector_builder::stepped_sequence_p): Handle
        polynomial vec_perm_indices element types.
        * int-vector-builder.h (int_vector_builder::equal_p): Likewise.
        * fold-const.c (fold_vec_perm): Likewise.
        * optabs.c (shift_amt_for_vec_perm_mask): Likewise.
        * tree-vect-generic.c (lower_vec_perm): Likewise.
        * tree-vect-slp.c (vect_transform_slp_perm_load): Likewise.
        * config/aarch64/aarch64.c (aarch64_evpc_tbl): Cast d->perm
        element type to HOST_WIDE_INT.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * alias.c (addr_side_effect_eval): Take the size as a poly_int64
        rather than an int.  Use plus_constant.
        (memrefs_conflict_p): Take the sizes as poly_int64s rather than ints.
        Take the offset "c" as a poly_int64 rather than a HOST_WIDE_INT.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * calls.c (emit_call_1, expand_call): Change struct_value_size from
        a HOST_WIDE_INT to a poly_int64.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * calls.c (load_register_parameters): Cope with polynomial
        mode sizes.  Require a constant size for BLKmode parameters
        that aren't described by a PARALLEL.  If BLOCK_REG_PADDING
        forces a parameter to be padded at the lsb end in order to
        fill a complete number of words, require the parameter size
        to be ordered wrt UNITS_PER_WORD.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * reload1.c (spill_stack_slot_width): Change element type
        from unsigned int to poly_uint64_pod.
        (alter_reg): Treat mode sizes as polynomial.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * reload.c (complex_word_subreg_p): New function.
        (reload_inner_reg_of_subreg, push_reload): Use it.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * lra-constraints.c (process_alt_operands): Reject matched
        operands whose sizes aren't ordered.
        (match_reload): Refer to this check here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * builtins.c (expand_ifn_atomic_compare_exchange_into_call): Assert
        that the mode size is in the set {1, 2, 4, 8, 16}.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * var-tracking.c (adjust_mems): Treat mode sizes as polynomial.
        Use plus_constant instead of gen_rtx_PLUS.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * config/cr16/cr16-protos.h (cr16_push_rounding): Declare.
        * config/cr16/cr16.h (PUSH_ROUNDING): Move implementation to...
        * config/cr16/cr16.c (cr16_push_rounding): ...this new function.
        * config/h8300/h8300-protos.h (h8300_push_rounding): Declare.
        * config/h8300/h8300.h (PUSH_ROUNDING): Move implementation to...
        * config/h8300/h8300.c (h8300_push_rounding): ...this new function.
        * config/i386/i386-protos.h (ix86_push_rounding): Declare.
        * config/i386/i386.h (PUSH_ROUNDING): Move implementation to...
        * config/i386/i386.c (ix86_push_rounding): ...this new function.
        * config/m32c/m32c-protos.h (m32c_push_rounding): Take and return
        a poly_int64.
        * config/m32c/m32c.c (m32c_push_rounding): Likewise.
        * config/m68k/m68k-protos.h (m68k_push_rounding): Declare.
        * config/m68k/m68k.h (PUSH_ROUNDING): Move implementation to...
        * config/m68k/m68k.c (m68k_push_rounding): ...this new function.
        * config/pdp11/pdp11-protos.h (pdp11_push_rounding): Declare.
        * config/pdp11/pdp11.h (PUSH_ROUNDING): Move implementation to...
        * config/pdp11/pdp11.c (pdp11_push_rounding): ...this new function.
        * config/stormy16/stormy16-protos.h (xstormy16_push_rounding): Declare.
        * config/stormy16/stormy16.h (PUSH_ROUNDING): Move implementation to...
        * config/stormy16/stormy16.c (xstormy16_push_rounding): ...this new
        function.
        * expr.c (emit_move_resolve_push): Treat the input and result
        of PUSH_ROUNDING as a poly_int64.
        (emit_move_complex_push, emit_single_push_insn_1): Likewise.
        (emit_push_insn): Likewise.
        * lra-eliminations.c (mark_not_eliminable): Likewise.
        * recog.c (push_operand): Likewise.
        * reload1.c (elimination_effects): Likewise.
        * rtlanal.c (nonzero_bits1): Likewise.
        * calls.c (store_one_arg): Likewise.  Require the padding to be
        known at compile time.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * expr.c (emit_single_push_insn_1): Treat mode sizes as polynomial.
        Use plus_constant instead of gen_rtx_PLUS.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * auto-inc-dec.c (set_inc_state): Take the mode size as a poly_int64
        rather than an int.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * expr.c (expand_expr_real_1): Use tree_to_poly_uint64
        instead of int_size_in_bytes when handling VIEW_CONVERT_EXPRs
        via stack temporaries.  Treat the mode size as polynomial too.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * expr.c (expand_expr_real_2): When handling conversions involving
        unions, apply tree_to_poly_uint64 to the TYPE_SIZE rather than
        multiplying int_size_in_bytes by BITS_PER_UNIT.  Treat GET_MODE_BISIZE
        as a poly_uint64 too.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * rtlanal.c (subreg_get_info): Handle polynomial mode sizes.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * combine.c (can_change_dest_mode): Handle polynomial
        REGMODE_NATURAL_SIZE.
        * expmed.c (store_bit_field_1): Likewise.
        * expr.c (store_constructor): Likewise.
        * emit-rtl.c (validate_subreg): Operate on polynomial mode sizes
        and polynomial REGMODE_NATURAL_SIZE.
        (gen_lowpart_common): Likewise.
        * reginfo.c (record_subregs_of_mode): Likewise.
        * rtlanal.c (read_modify_subreg_p): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * internal-fn.c (expand_vector_ubsan_overflow): Handle polynomial
        numbers of elements.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * match.pd: Cope with polynomial numbers of vector elements.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * fold-const.c (fold_indirect_ref_1): Handle polynomial offsets
        in a POINTER_PLUS_EXPR.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * omp-simd-clone.c (simd_clone_subparts): New function.
        (simd_clone_init_simd_arrays): Use it instead of TYPE_VECTOR_SUBPARTS.
        (ipa_simd_modify_function_body): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-generic.c (nunits_for_known_piecewise_op): New function.
        (expand_vector_piecewise): Use it instead of TYPE_VECTOR_SUBPARTS.
        (expand_vector_addition, add_rshift, expand_vector_divmod): Likewise.
        (expand_vector_condition, vector_element): Likewise.
        (subparts_gt): New function.
        (get_compute_type): Use subparts_gt.
        (count_type_subparts): Delete.
        (expand_vector_operations_1): Use subparts_gt instead of
        count_type_subparts.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-data-refs.c (vect_no_alias_p): Replace with...
        (vect_compile_time_alias): ...this new function.  Do the calculation
        on poly_ints rather than trees.
        (vect_prune_runtime_alias_test_list): Update call accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-slp.c (vect_build_slp_tree_1): Handle polynomial
        numbers of units.
        (vect_schedule_slp_instance): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-slp.c (vect_get_and_check_slp_defs): Reject
        constant and extern definitions for variable-length vectors.
        (vect_get_constant_vectors): Note that the number of units
        is known to be constant.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-stmts.c (vectorizable_conversion): Treat the number
        of units as polynomial.  Choose between WIDE and NARROW based
        on multiple_p.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-stmts.c (simd_clone_subparts): New function.
        (vectorizable_simd_clone_call): Use it instead of TYPE_VECTOR_SUBPARTS.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-stmts.c (vectorizable_call): Treat the number of
        vectors as polynomial.  Use build_index_vector for
        IFN_GOMP_SIMD_LANE.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-stmts.c (get_load_store_type): Treat the number of
        units as polynomial.  Reject VMAT_ELEMENTWISE and VMAT_STRIDED_SLP
        for variable-length vectors.
        (vectorizable_mask_load_store): Treat the number of units as
        polynomial, asserting that it is constant if the condition has
        already been enforced.
        (vectorizable_store, vectorizable_load): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-loop.c (vectorizable_live_operation): Treat the number
        of units as polynomial.  Punt if we can't tell at compile time
        which vector contains the final result.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-loop.c (vectorizable_induction): Treat the number
        of units as polynomial.  Punt on SLP inductions.  Use an integer
        VEC_SERIES_EXPR for variable-length integer reductions.  Use a
        cast of such a series for variable-length floating-point
        reductions.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree.h (build_index_vector): Declare.
        * tree.c (build_index_vector): New function.
        * tree-vect-loop.c (get_initial_defs_for_reduction): Treat the number
        of units as polynomial, forcibly converting it to a constant if
        vectorizable_reduction has already enforced the condition.
        (vect_create_epilog_for_reduction): Likewise.  Use build_index_vector
        to create a {1,2,3,...} vector.
        (vectorizable_reduction): Treat the number of units as polynomial.
        Choose vectype_in based on the largest scalar element size rather
        than the smallest number of units.  Enforce the restrictions
        relied on above.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-data-refs.c (vector_alignment_reachable_p): Treat the
        number of units as polynomial.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * target.h (vector_sizes, auto_vector_sizes): New typedefs.
        * target.def (autovectorize_vector_sizes): Return the vector sizes
        by pointer, using vector_sizes rather than a bitmask.
        * targhooks.h (default_autovectorize_vector_sizes): Update accordingly.
        * targhooks.c (default_autovectorize_vector_sizes): Likewise.
        * config/aarch64/aarch64.c (aarch64_autovectorize_vector_sizes):
        Likewise.
        * config/arc/arc.c (arc_autovectorize_vector_sizes): Likewise.
        * config/arm/arm.c (arm_autovectorize_vector_sizes): Likewise.
        * config/i386/i386.c (ix86_autovectorize_vector_sizes): Likewise.
        * config/mips/mips.c (mips_autovectorize_vector_sizes): Likewise.
        * omp-general.c (omp_max_vf): Likewise.
        * omp-low.c (omp_clause_aligned_alignment): Likewise.
        * optabs-query.c (can_vec_mask_load_store_p): Likewise.
        * tree-vect-loop.c (vect_analyze_loop): Likewise.
        * tree-vect-slp.c (vect_slp_bb): Likewise.
        * doc/tm.texi: Regenerate.
        * tree-vectorizer.h (current_vector_size): Change from an unsigned int
        to a poly_uint64.
        * tree-vect-stmts.c (get_vectype_for_scalar_type_and_size): Take
        the vector size as a poly_uint64 rather than an unsigned int.
        (current_vector_size): Change from an unsigned int to a poly_uint64.
        (get_vectype_for_scalar_type): Update accordingly.
        * tree.h (build_truth_vector_type): Take the size and number of
        units as a poly_uint64 rather than an unsigned int.
        (build_vector_type): Add a temporary overload that takes
        the number of units as a poly_uint64 rather than an unsigned int.
        * tree.c (make_vector_type): Likewise.
        (build_truth_vector_type): Take the number of units as a poly_uint64
        rather than an unsigned int.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * target.def (get_mask_mode): Take the number of units and length
        as poly_uint64s rather than unsigned ints.
        * targhooks.h (default_get_mask_mode): Update accordingly.
        * targhooks.c (default_get_mask_mode): Likewise.
        * config/i386/i386.c (ix86_get_mask_mode): Likewise.
        * doc/tm.texi: Regenerate.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * omp-general.h (omp_max_vf): Return a poly_uint64 instead of an int.
        * omp-general.c (omp_max_vf): Likewise.
        * omp-expand.c (omp_adjust_chunk_size): Update call to omp_max_vf.
        (expand_omp_simd): Handle polynomial safelen.
        * omp-low.c (omplow_simd_context): Add a default constructor.
        (omplow_simd_context::max_vf): Change from int to poly_uint64.
        (lower_rec_simd_input_clauses): Update accordingly.
        (lower_rec_input_clauses): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vectorizer.h (vect_nunits_for_cost): New function.
        * tree-vect-loop.c (vect_model_reduction_cost): Use it.
        * tree-vect-slp.c (vect_analyze_slp_cost_1): Likewise.
        (vect_analyze_slp_cost): Likewise.
        * tree-vect-stmts.c (vect_model_store_cost): Likewise.
        (vect_model_load_cost): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vect-slp.c (vect_record_max_nunits, vect_build_slp_tree_1)
        (vect_build_slp_tree_2, vect_build_slp_tree): Change max_nunits
        from an unsigned int * to a poly_uint64_pod *.
        (calculate_unrolling_factor): New function.
        (vect_analyze_slp_instance): Use it.  Track polynomial max_nunits.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * tree-vectorizer.h (_slp_instance::unrolling_factor): Change
        from an unsigned int to a poly_uint64.
        (_loop_vec_info::slp_unrolling_factor): Likewise.
        (_loop_vec_info::vectorization_factor): Change from an int
        to a poly_uint64.
        (MAX_VECTORIZATION_FACTOR): Bump from 64 to INT_MAX.
        (vect_get_num_vectors): New function.
        (vect_update_max_nunits, vect_vf_for_cost): Likewise.
        (vect_get_num_copies): Use vect_get_num_vectors.
        (vect_analyze_data_ref_dependences): Change max_vf from an int *
        to an unsigned int *.
        (vect_analyze_data_refs): Change min_vf from an int * to a
        poly_uint64 *.
        (vect_transform_slp_perm_load): Take the vf as a poly_uint64 rather
        than an unsigned HOST_WIDE_INT.
        * tree-vect-data-refs.c (vect_analyze_possibly_independent_ddr)
        (vect_analyze_data_ref_dependence): Change max_vf from an int *
        to an unsigned int *.
        (vect_analyze_data_ref_dependences): Likewise.
        (vect_compute_data_ref_alignment): Handle polynomial vf.
        (vect_enhance_data_refs_alignment): Likewise.
        (vect_prune_runtime_alias_test_list): Likewise.
        (vect_shift_permute_load_chain): Likewise.
        (vect_supportable_dr_alignment): Likewise.
        (dependence_distance_ge_vf): Take the vectorization factor as a
        poly_uint64 rather than an unsigned HOST_WIDE_INT.
        (vect_analyze_data_refs): Change min_vf from an int * to a
        poly_uint64 *.
        * tree-vect-loop-manip.c (vect_gen_scalar_loop_niters): Take
        vfm1 as a poly_uint64 rather than an int.  Make the same change
        for the returned bound_scalar.
        (vect_gen_vector_loop_niters): Handle polynomial vf.
        (vect_do_peeling): Likewise.  Update call to
        vect_gen_scalar_loop_niters and handle polynomial bound_scalars.
        (vect_gen_vector_loop_niters_mult_vf): Assert that the vf must
        be constant.
        * tree-vect-loop.c (vect_determine_vectorization_factor)
        (vect_update_vf_for_slp, vect_analyze_loop_2): Handle polynomial vf.
        (vect_get_known_peeling_cost): Likewise.
        (vect_estimate_min_profitable_iters, vectorizable_reduction): Likewise.
        (vect_worthwhile_without_simd_p, vectorizable_induction): Likewise.
        (vect_transform_loop): Likewise.  Use the lowest possible VF when
        updating the upper bounds of the loop.
        (vect_min_worthwhile_factor): Make static.  Return an unsigned int
        rather than an int.
        * tree-vect-slp.c (vect_attempt_slp_rearrange_stmts): Cope with
        polynomial unroll factors.
        (vect_analyze_slp_cost_1, vect_analyze_slp_instance): Likewise.
        (vect_make_slp_decision): Likewise.
        (vect_supported_load_permutation_p): Likewise, and polynomial
        vf too.
        (vect_analyze_slp_cost): Handle polynomial vf.
        (vect_slp_analyze_node_operations): Likewise.
        (vect_slp_analyze_bb_1): Likewise.
        (vect_transform_slp_perm_load): Take the vf as a poly_uint64 rather
        than an unsigned HOST_WIDE_INT.
        * tree-vect-stmts.c (vectorizable_simd_clone_call, vectorizable_store)
        (vectorizable_load): Handle polynomial vf.
        * tree-vectorizer.c (simduid_to_vf::vf): Change from an int to
        a poly_uint64.
        (adjust_simduid_builtins, shrink_simd_arrays): Update accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * match.pd: Handle bit operations involving three constants
        and try to fold one pair.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-vect-loop-manip.c: Include gimple-fold.h.
        (slpeel_make_loop_iterate_ntimes): Add step, final_iv and
        niters_maybe_zero parameters.  Handle other cases besides a step of 1.
        (vect_gen_vector_loop_niters): Add a step_vector_ptr parameter.
        Add a path that uses a step of VF instead of 1, but disable it
        for now.
        (vect_do_peeling): Add step_vector, niters_vector_mult_vf_var
        and niters_no_overflow parameters.  Update calls to
        slpeel_make_loop_iterate_ntimes and vect_gen_vector_loop_niters.
        Create a new SSA name if the latter choses to use a ste other
        than zero, and return it via niters_vector_mult_vf_var.
        * tree-vect-loop.c (vect_transform_loop): Update calls to
        vect_do_peeling, vect_gen_vector_loop_niters and
        slpeel_make_loop_iterate_ntimes.
        * tree-vectorizer.h (slpeel_make_loop_iterate_ntimes, vect_do_peeling)
        (vect_gen_vector_loop_niters): Update declarations after above changes.

2018-01-02  Michael Meissner  <meissner@linux.vnet.ibm.com>

        * config/rs6000/rs6000.md (floor<mode>2): Add support for IEEE
        128-bit round to integer instructions.
        (ceil<mode>2): Likewise.
        (btrunc<mode>2): Likewise.
        (round<mode>2): Likewise.

2018-01-02  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        * config/rs6000/rs6000-string.c (expand_block_move): Allow the use of
        unaligned VSX load/store on P8/P9.
        (expand_block_clear): Allow the use of unaligned VSX
        load/store on P8/P9.

2018-01-02  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        * config/rs6000/rs6000-p8swap.c (swap_feeds_both_load_and_store):
        New function.
        (rs6000_analyze_swaps): Mark a web unoptimizable if it contains a
        swap associated with both a load and a store.

2018-01-02  Andrew Waterman  <andrew@sifive.com>

        * config/riscv/linux.h (ICACHE_FLUSH_FUNC): New.
        * config/riscv/riscv.md (clear_cache): Use it.

2018-01-02  Artyom Skrobov  <tyomitch@gmail.com>

        * web.c: Remove out-of-date comment.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * expr.c (fixup_args_size_notes): Check that any existing
        REG_ARGS_SIZE notes are correct, and don't try to re-add them.
        (emit_single_push_insn_1): Move stack_pointer_delta adjustment to...
        (emit_single_push_insn): ...here.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * rtl.h (CONST_VECTOR_ELT): Redefine to const_vector_elt.
        (const_vector_encoded_nelts): New function.
        (CONST_VECTOR_NUNITS): Redefine to use GET_MODE_NUNITS.
        (const_vector_int_elt, const_vector_elt): Declare.
        * emit-rtl.c (const_vector_int_elt_1): New function.
        (const_vector_elt): Likewise.
        * simplify-rtx.c (simplify_immed_subreg): Avoid taking the address
        of CONST_VECTOR_ELT.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * expr.c: Include rtx-vector-builder.h.
        (const_vector_mask_from_tree): Use rtx_vector_builder and operate
        directly on the tree encoding.
        (const_vector_from_tree): Likewise.
        * optabs.c: Include rtx-vector-builder.h.
        (expand_vec_perm_var): Use rtx_vector_builder and create a repeating
        sequence of "u" values.
        * vec-perm-indices.c: Include rtx-vector-builder.h.
        (vec_perm_indices_to_rtx): Use rtx_vector_builder and operate
        directly on the vec_perm_indices encoding.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * doc/rtl.texi (const_vector): Describe new encoding scheme.
        * Makefile.in (OBJS): Add rtx-vector-builder.o.
        * rtx-vector-builder.h: New file.
        * rtx-vector-builder.c: Likewise.
        * rtl.h (rtx_def::u2): Add a const_vector field.
        (CONST_VECTOR_NPATTERNS): New macro.
        (CONST_VECTOR_NELTS_PER_PATTERN): Likewise.
        (CONST_VECTOR_DUPLICATE_P): Likewise.
        (CONST_VECTOR_STEPPED_P): Likewise.
        (CONST_VECTOR_ENCODED_ELT): Likewise.
        (const_vec_duplicate_p): Check for a duplicated vector encoding.
        (unwrap_const_vec_duplicate): Likewise.
        (const_vec_series_p): Check for a non-duplicated vector encoding.
        Say that the function only returns true for integer vectors.
        * emit-rtl.c: Include rtx-vector-builder.h.
        (gen_const_vec_duplicate_1): Delete.
        (gen_const_vector): Call gen_const_vec_duplicate instead of
        gen_const_vec_duplicate_1.
        (const_vec_series_p_1): Operate directly on the CONST_VECTOR encoding.
        (gen_const_vec_duplicate): Use rtx_vector_builder.
        (gen_const_vec_series): Likewise.
        (gen_rtx_CONST_VECTOR): Likewise.
        * config/powerpcspe/powerpcspe.c: Include rtx-vector-builder.h.
        (swap_const_vector_halves): Take an rtx pointer rather than rtx.
        Build a new vector rather than modifying a CONST_VECTOR in-place.
        (handle_special_swappables): Update call accordingly.
        * config/rs6000/rs6000-p8swap.c: Include rtx-vector-builder.h.
        (swap_const_vector_halves): Take an rtx pointer rather than rtx.
        Build a new vector rather than modifying a CONST_VECTOR in-place.
        (handle_special_swappables): Update call accordingly.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * simplify-rtx.c (simplify_const_binary_operation): Use
        CONST_VECTOR_ELT instead of XVECEXP.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * tree-cfg.c (verify_gimple_assign_ternary): Allow the size of
        the selector elements to be different from the data elements
        if the selector is a VECTOR_CST.
        * tree-vect-stmts.c (vect_gen_perm_mask_any): Use a vector of
        ssizetype for the selector.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs.c (shift_amt_for_vec_perm_mask): Try using series_p
        before testing each element individually.
        * tree-vect-generic.c (lower_vec_perm): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * selftest.h (selftest::vec_perm_indices_c_tests): Declare.
        * selftest-run-tests.c (selftest::run_tests): Call it.
        * vector-builder.h (vector_builder::operator ==): New function.
        (vector_builder::operator !=): Likewise.
        * vec-perm-indices.h (vec_perm_indices::series_p): Declare.
        (vec_perm_indices::all_from_input_p): New function.
        * vec-perm-indices.c (vec_perm_indices::series_p): Likewise.
        (test_vec_perm_12, selftest::vec_perm_indices_c_tests): Likewise.
        * fold-const.c (fold_ternary_loc): Use tree_to_vec_perm_builder
        instead of reading the VECTOR_CST directly.  Detect whether both
        vector inputs are the same before constructing the vec_perm_indices,
        and update the number of inputs argument accordingly.  Use the
        utility functions added above.  Only construct sel2 if we need to.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs.c (expand_vec_perm_var): Use an explicit encoding for
        the broadcast of the low byte.
        (expand_mult_highpart): Use an explicit encoding for the permutes.
        * optabs-query.c (can_mult_highpart_p): Likewise.
        * tree-vect-loop.c (calc_vec_perm_mask_for_shift): Likewise.
        * tree-vect-stmts.c (perm_mask_for_reverse): Likewise.
        (vectorizable_bswap): Likewise.
        * tree-vect-data-refs.c (vect_grouped_store_supported): Use an
        explicit encoding for the power-of-2 permutes.
        (vect_permute_store_chain): Likewise.
        (vect_grouped_load_supported): Likewise.
        (vect_permute_load_chain): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * vec-perm-indices.h (vec_perm_indices_to_tree): Declare.
        * vec-perm-indices.c (vec_perm_indices_to_tree): New function.
        * tree-ssa-forwprop.c (simplify_vector_constructor): Use it.
        * tree-vect-slp.c (vect_transform_slp_perm_load): Likewise.
        * tree-vect-stmts.c (vectorizable_bswap): Likewise.
        (vect_gen_perm_mask_any): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * int-vector-builder.h: New file.
        * vec-perm-indices.h: Include int-vector-builder.h.
        (vec_perm_indices): Redefine as an int_vector_builder.
        (auto_vec_perm_indices): Delete.
        (vec_perm_builder): Redefine as a stand-alone class.
        (vec_perm_indices::vec_perm_indices): New function.
        (vec_perm_indices::clamp): Likewise.
        * vec-perm-indices.c: Include fold-const.h and tree-vector-builder.h.
        (vec_perm_indices::new_vector): New function.
        (vec_perm_indices::new_expanded_vector): Update for new
        vec_perm_indices class.
        (vec_perm_indices::rotate_inputs): New function.
        (vec_perm_indices::all_in_range_p): Operate directly on the
        encoded form, without computing elided elements.
        (tree_to_vec_perm_builder): Operate directly on the VECTOR_CST
        encoding.  Update for new vec_perm_indices class.
        * optabs.c (expand_vec_perm_const): Create a vec_perm_indices for
        the given vec_perm_builder.
        (expand_vec_perm_var): Update vec_perm_builder constructor.
        (expand_mult_highpart): Use vec_perm_builder instead of
        auto_vec_perm_indices.
        * optabs-query.c (can_mult_highpart_p): Use vec_perm_builder and
        vec_perm_indices instead of auto_vec_perm_indices.  Use a single
        or double series encoding as appropriate.
        * fold-const.c (fold_ternary_loc): Use vec_perm_builder and
        vec_perm_indices instead of auto_vec_perm_indices.
        * tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
        * tree-vect-data-refs.c (vect_grouped_store_supported): Likewise.
        (vect_permute_store_chain): Likewise.
        (vect_grouped_load_supported): Likewise.
        (vect_permute_load_chain): Likewise.
        (vect_shift_permute_load_chain): Likewise.
        * tree-vect-slp.c (vect_build_slp_tree_1): Likewise.
        (vect_transform_slp_perm_load): Likewise.
        (vect_schedule_slp_instance): Likewise.
        * tree-vect-stmts.c (perm_mask_for_reverse): Likewise.
        (vectorizable_mask_load_store): Likewise.
        (vectorizable_bswap): Likewise.
        (vectorizable_store): Likewise.
        (vectorizable_load): Likewise.
        * tree-vect-generic.c (lower_vec_perm): Use vec_perm_builder and
        vec_perm_indices instead of auto_vec_perm_indices.  Use
        tree_to_vec_perm_builder to read the vector from a tree.
        * tree-vect-loop.c (calc_vec_perm_mask_for_shift): Take a
        vec_perm_builder instead of a vec_perm_indices.
        (have_whole_vector_shift): Use vec_perm_builder and
        vec_perm_indices instead of auto_vec_perm_indices.  Leave the
        truncation to calc_vec_perm_mask_for_shift.
        (vect_create_epilog_for_reduction): Likewise.
        * config/aarch64/aarch64.c (expand_vec_perm_d::perm): Change
        from auto_vec_perm_indices to vec_perm_indices.
        (aarch64_expand_vec_perm_const_1): Use rotate_inputs on d.perm
        instead of changing individual elements.
        (aarch64_vectorize_vec_perm_const): Use new_vector to install
        the vector in d.perm.
        * config/arm/arm.c (expand_vec_perm_d::perm): Change
        from auto_vec_perm_indices to vec_perm_indices.
        (arm_expand_vec_perm_const_1): Use rotate_inputs on d.perm
        instead of changing individual elements.
        (arm_vectorize_vec_perm_const): Use new_vector to install
        the vector in d.perm.
        * config/powerpcspe/powerpcspe.c (rs6000_expand_extract_even):
        Update vec_perm_builder constructor.
        (rs6000_expand_interleave): Likewise.
        * config/rs6000/rs6000.c (rs6000_expand_extract_even): Likewise.
        (rs6000_expand_interleave): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs-query.c (can_vec_perm_var_p): Check whether lowering
        to qimode could truncate the indices.
        * optabs.c (expand_vec_perm_var): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * Makefile.in (OBJS): Add vec-perm-indices.o.
        * vec-perm-indices.h: New file.
        * vec-perm-indices.c: Likewise.
        * target.h (vec_perm_indices): Replace with a forward class
        declaration.
        (auto_vec_perm_indices): Move to vec-perm-indices.h.
        * optabs.h: Include vec-perm-indices.h.
        (expand_vec_perm): Delete.
        (selector_fits_mode_p, expand_vec_perm_var): Declare.
        (expand_vec_perm_const): Declare.
        * target.def (vec_perm_const_ok): Replace with...
        (vec_perm_const): ...this new hook.
        * doc/tm.texi.in (TARGET_VECTORIZE_VEC_PERM_CONST_OK): Replace with...
        (TARGET_VECTORIZE_VEC_PERM_CONST): ...this new hook.
        * doc/tm.texi: Regenerate.
        * optabs.def (vec_perm_const): Delete.
        * doc/md.texi (vec_perm_const): Likewise.
        (vec_perm): Refer to TARGET_VECTORIZE_VEC_PERM_CONST.
        * expr.c (expand_expr_real_2): Use expand_vec_perm_const rather than
        expand_vec_perm for constant permutation vectors.  Assert that
        the mode of variable permutation vectors is the integer equivalent
        of the mode that is being permuted.
        * optabs-query.h (selector_fits_mode_p): Declare.
        * optabs-query.c: Include vec-perm-indices.h.
        (selector_fits_mode_p): New function.
        (can_vec_perm_const_p): Check whether targetm.vectorize.vec_perm_const
        is defined, instead of checking whether the vec_perm_const_optab
        exists.  Use targetm.vectorize.vec_perm_const instead of
        targetm.vectorize.vec_perm_const_ok.  Check whether the indices
        fit in the vector mode before using a variable permute.
        * optabs.c (shift_amt_for_vec_perm_mask): Take a mode and a
        vec_perm_indices instead of an rtx.
        (expand_vec_perm): Replace with...
        (expand_vec_perm_const): ...this new function.  Take the selector
        as a vec_perm_indices rather than an rtx.  Also take the mode of
        the selector.  Update call to shift_amt_for_vec_perm_mask.
        Use targetm.vectorize.vec_perm_const instead of vec_perm_const_optab.
        Use vec_perm_indices::new_expanded_vector to expand the original
        selector into bytes.  Check whether the indices fit in the vector
        mode before using a variable permute.
        (expand_vec_perm_var): Make global.
        (expand_mult_highpart): Use expand_vec_perm_const.
        * fold-const.c: Includes vec-perm-indices.h.
        * tree-ssa-forwprop.c: Likewise.
        * tree-vect-data-refs.c: Likewise.
        * tree-vect-generic.c: Likewise.
        * tree-vect-loop.c: Likewise.
        * tree-vect-slp.c: Likewise.
        * tree-vect-stmts.c: Likewise.
        * config/aarch64/aarch64-protos.h (aarch64_expand_vec_perm_const):
        Delete.
        * config/aarch64/aarch64-simd.md (vec_perm_const<mode>): Delete.
        * config/aarch64/aarch64.c (aarch64_expand_vec_perm_const)
        (aarch64_vectorize_vec_perm_const_ok): Fuse into...
        (aarch64_vectorize_vec_perm_const): ...this new function.
        (TARGET_VECTORIZE_VEC_PERM_CONST_OK): Delete.
        (TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.
        * config/arm/arm-protos.h (arm_expand_vec_perm_const): Delete.
        * config/arm/vec-common.md (vec_perm_const<mode>): Delete.
        * config/arm/arm.c (TARGET_VECTORIZE_VEC_PERM_CONST_OK): Delete.
        (TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.
        (arm_expand_vec_perm_const, arm_vectorize_vec_perm_const_ok): Merge
        into...
        (arm_vectorize_vec_perm_const): ...this new function.  Explicitly
        check for NEON modes.
        * config/i386/i386-protos.h (ix86_expand_vec_perm_const): Delete.
        * config/i386/sse.md (VEC_PERM_CONST, vec_perm_const<mode>): Delete.
        * config/i386/i386.c (ix86_expand_vec_perm_const_1): Update comment.
        (ix86_expand_vec_perm_const, ix86_vectorize_vec_perm_const_ok): Merge
        into...
        (ix86_vectorize_vec_perm_const): ...this new function.  Incorporate
        the old VEC_PERM_CONST conditions.
        * config/ia64/ia64-protos.h (ia64_expand_vec_perm_const): Delete.
        * config/ia64/vect.md (vec_perm_const<mode>): Delete.
        * config/ia64/ia64.c (ia64_expand_vec_perm_const)
        (ia64_vectorize_vec_perm_const_ok): Merge into...
        (ia64_vectorize_vec_perm_const): ...this new function.
        * config/mips/loongson.md (vec_perm_const<mode>): Delete.
        * config/mips/mips-msa.md (vec_perm_const<mode>): Delete.
        * config/mips/mips-ps-3d.md (vec_perm_constv2sf): Delete.
        * config/mips/mips-protos.h (mips_expand_vec_perm_const): Delete.
        * config/mips/mips.c (mips_expand_vec_perm_const)
        (mips_vectorize_vec_perm_const_ok): Merge into...
        (mips_vectorize_vec_perm_const): ...this new function.
        * config/powerpcspe/altivec.md (vec_perm_constv16qi): Delete.
        * config/powerpcspe/paired.md (vec_perm_constv2sf): Delete.
        * config/powerpcspe/spe.md (vec_perm_constv2si): Delete.
        * config/powerpcspe/vsx.md (vec_perm_const<mode>): Delete.
        * config/powerpcspe/powerpcspe-protos.h (altivec_expand_vec_perm_const)
        (rs6000_expand_vec_perm_const): Delete.
        * config/powerpcspe/powerpcspe.c (TARGET_VECTORIZE_VEC_PERM_CONST_OK):
        Delete.
        (TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.
        (altivec_expand_vec_perm_const_le): Take each operand individually.
        Operate on constant selectors rather than rtxes.
        (altivec_expand_vec_perm_const): Likewise.  Update call to
        altivec_expand_vec_perm_const_le.
        (rs6000_expand_vec_perm_const): Delete.
        (rs6000_vectorize_vec_perm_const_ok): Delete.
        (rs6000_vectorize_vec_perm_const): New function.
        (rs6000_do_expand_vec_perm): Take a vec_perm_builder instead of
        an element count and rtx array.
        (rs6000_expand_extract_even): Update call accordingly.
        (rs6000_expand_interleave): Likewise.
        * config/rs6000/altivec.md (vec_perm_constv16qi): Delete.
        * config/rs6000/paired.md (vec_perm_constv2sf): Delete.
        * config/rs6000/vsx.md (vec_perm_const<mode>): Delete.
        * config/rs6000/rs6000-protos.h (altivec_expand_vec_perm_const)
        (rs6000_expand_vec_perm_const): Delete.
        * config/rs6000/rs6000.c (TARGET_VECTORIZE_VEC_PERM_CONST_OK): Delete.
        (TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.
        (altivec_expand_vec_perm_const_le): Take each operand individually.
        Operate on constant selectors rather than rtxes.
        (altivec_expand_vec_perm_const): Likewise.  Update call to
        altivec_expand_vec_perm_const_le.
        (rs6000_expand_vec_perm_const): Delete.
        (rs6000_vectorize_vec_perm_const_ok): Delete.
        (rs6000_vectorize_vec_perm_const): New function.  Remove stray
        reference to the SPE evmerge intructions.
        (rs6000_do_expand_vec_perm): Take a vec_perm_builder instead of
        an element count and rtx array.
        (rs6000_expand_extract_even): Update call accordingly.
        (rs6000_expand_interleave): Likewise.
        * config/sparc/sparc.md (vec_perm_constv8qi): Delete in favor of...
        * config/sparc/sparc.c (sparc_vectorize_vec_perm_const): ...this
        new function.
        (TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs.c (expand_vec_perm_1): Assert that SEL has an integer
        vector mode and that that mode matches the mode of the data
        being permuted.
        (expand_vec_perm): Split handling of non-CONST_VECTOR selectors
        out into expand_vec_perm_var.  Do all CONST_VECTOR handling here,
        directly using expand_vec_perm_1 when forcing selectors into
        registers.
        (expand_vec_perm_var): New function, split out from expand_vec_perm.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs-query.h (can_vec_perm_p): Delete.
        (can_vec_perm_var_p, can_vec_perm_const_p): Declare.
        * optabs-query.c (can_vec_perm_p): Split into...
        (can_vec_perm_var_p, can_vec_perm_const_p): ...these two functions.
        (can_mult_highpart_p): Use can_vec_perm_const_p to test whether a
        particular selector is valid.
        * tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
        * tree-vect-data-refs.c (vect_grouped_store_supported): Likewise.
        (vect_grouped_load_supported): Likewise.
        (vect_shift_permute_load_chain): Likewise.
        * tree-vect-slp.c (vect_build_slp_tree_1): Likewise.
        (vect_transform_slp_perm_load): Likewise.
        * tree-vect-stmts.c (perm_mask_for_reverse): Likewise.
        (vectorizable_bswap): Likewise.
        (vect_gen_perm_mask_checked): Likewise.
        * fold-const.c (fold_ternary_loc): Likewise.  Don't take
        implementations of variable permutation vectors into account
        when deciding which selector to use.
        * tree-vect-loop.c (have_whole_vector_shift): Don't check whether
        vec_perm_const_optab is supported; instead use can_vec_perm_const_p
        with a false third argument.
        * tree-vect-generic.c (lower_vec_perm): Use can_vec_perm_const_p
        to test whether the constant selector is valid and can_vec_perm_var_p
        to test whether a variable selector is valid.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs-query.h (can_vec_perm_p): Take a const vec_perm_indices *.
        * optabs-query.c (can_vec_perm_p): Likewise.
        * fold-const.c (fold_vec_perm): Take a const vec_perm_indices &
        instead of vec_perm_indices.
        * tree-vectorizer.h (vect_gen_perm_mask_any): Likewise,
        (vect_gen_perm_mask_checked): Likewise,
        * tree-vect-stmts.c (vect_gen_perm_mask_any): Likewise,
        (vect_gen_perm_mask_checked): Likewise,

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

        * optabs-query.h (qimode_for_vec_perm): Declare.
        * optabs-query.c (can_vec_perm_p): Split out qimode search to...
        (qimode_for_vec_perm): ...this new function.
        * optabs.c (expand_vec_perm): Use qimode_for_vec_perm.

2018-01-02  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        * rtlanal.c (canonicalize_condition): Return 0 if final rtx
        does not have a conditional at the top.

2018-01-02  Richard Biener  <rguenther@suse.de>

        * ipa-inline.c (big_speedup_p): Fix expression.

2018-01-02  Jan Hubicka  <hubicka@ucw.cz>

        PR target/81616
        * config/i386/x86-tune-costs.h: Increase cost of integer load costs
        for generic 4->6.

2018-01-02  Jan Hubicka  <hubicka@ucw.cz>

        PR target/81616
        Generic tuning.
        * x86-tune-costs.h (generic_cost): Reduce cost of FDIV 20->17,
        cost of sqrt 20->14, DIVSS 18->13, DIVSD 32->17, SQRtSS 30->14
        and SQRTsD 58->18, cond_not_taken_branch_cost. 2->1. Increase
        cond_taken_branch_cost 3->4.

2018-01-01  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/83581
        * tree-loop-distribution.c (pass_loop_distribution::execute): Return
        TODO_cleanup_cfg if any changes have been made.

        PR middle-end/83608
        * expr.c (store_expr_with_bounds): Use simplify_gen_subreg instead of
        convert_modes if target mode has the right side, but different mode
        class.

        PR middle-end/83609
        * expr.c (expand_assignment): Fix up a typo in simplify_gen_subreg
        last argument when extracting from CONCAT.  If either from_real or
        from_imag is NULL, use expansion through memory.  If result is not
        a CONCAT and simplify_gen_subreg fails, try to simplify_gen_subreg
        the parts directly to inner mode, if even that fails, use expansion
        through memory.

        PR middle-end/83623
        * expmed.c (expand_shift_1): For 2-byte rotates by BITS_PER_UNIT,
        check for bswap in mode rather than HImode and use that in expand_unop
        too.
\f
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