[gcc.git] / gcc / ChangeLog

Tue Sep 30 23:48:57 1997  Jeffrey A Law  (law@cygnus.com)

        * cse.c (this_insn_cc0_mode): Initialize.

Tue Sep 30 23:09:40 1997  Thomas Koenig <ig25@mvmap66.ciw.uni-karlsruhe.de>

        * haifa-sched.c: (get_block_head_tail) Remove unneeded initialization.

Tue Sep 30 23:06:43 1997  Richard Henderson  <rth@cygnus.com>

        * alpha.md (beq): For registers and ints 0-255, use cmpeq+bne, since
        that pair will dual-issue on the 21164 and plus+beq won't.
        (bne): Likewise for cmpeq+beq.

Tue Sep 30 16:07:58 1997  Jim Wilson  <wilson@cygnus.com>

        * except.c (find_exception_handler_labels): Correct argument to free.

Tue Sep 30 11:00:00 1997  Brendan Kehoe  <brendan@lisa.cygnus.com>

        * except.c (find_exception_handler_labels): Free LABELS when we're
        done.

Mon Sep 29 14:04:35 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Bump for snapshot.

Mon Sep 29 10:51:53 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * flow.c (find_basic_blocks): Mark calls as potentially jumping
        to the EH labels.

Mon Sep 29 09:58:06 1997  Jeffrey A Law  (law@cygnus.com)

        * configure.in: Substitute for "install" too.
        * configure: Rebuilt.

Mon Sep 29 00:38:42 1997 Aaron Jackson <jackson@negril.msrce.howard.edu>

        * Makefile.in (bootstrap-lean, compare-lean): New targets.

Mon Sep 29 00:18:16 1997  Richard Henderson  (rth@cygnus.com)

        * alias.c (base_alias_check): Two symbols can conflict if they
        are accessed via AND.
        (memrefs_conflict_p): Likewise.

        * alpha.h (SETUP_INCOMING_VARARGS): Emit a blockage insn
        after flushing argument registers to the stack.

        * Makefile.in (mostlyclean): Remove .regmove files.

Sun Sep 28 18:59:58 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * libgcc2.c (__throw): Fix thinko.

Sun Sep 28 12:00:52 1997  Mark Mitchell  <mmitchell@usa.net>

        * cplus-dem.c (demangle_template): Add new parameter.  Handle new
        template-function mangling.
        (consume_count_with_underscores): New function.
        (demangle_signature): Handle new name-mangling scheme.

Sun Sep 28 01:55:04 1997  Philippe De Muyter  <phdm@info.ucl.ac.be>

        * flow.c (print_rtl_with_bb): Cast alloca return values for variables
        start and end.

Sun Sep 28 01:05:16 1997  Jeffrey A Law  (law@cygnus.com)

        * frame.c: Remove last change.
        * dwarf2.h: Remove last change.
        * tree.h: Add declarations of DWARF2 unwind info support
        functions.

Sat Sep 27 11:02:38 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * c-decl.c (init_decl_processing): Add __builtin_dwarf_reg_size.
        * tree.h (built_in_function): Likewise.
        * expr.c (expand_builtin): Likewise.
        * except.h: Likewise.
        * dwarf2out.c (expand_builtin_dwarf_reg_size): New fn.
        * libgcc2.c (copy_reg): New fn.
        (__throw): Use it.

Fri Sep 26 08:54:59 1997  Paul Eggert  <eggert@twinsun.com>

        * c-typeck.c (build_binary_op): Warn about comparing signed vs
        unsigned if -W is specified and -Wno-sign-compare is not.
        * c-decl.c (warn_sign_compare): Initialize to -1.
        (c_decode_option): -Wall no longer implies -Wsign-compare.

Fri Sep 26 09:00:13 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

        * frame.c: Include gansidecl.h for PROTO.
        * dwarf2out.c: Move inclusion of dwarf2.h down so that PROTO is
        defined.  Don't declare dwarf2out_cfi_label here.
        * dwarf2.h: Add declarations of DWARF2 unwind info support
        functions.
        * m68k.c: Include dwarf2.h.
        (output_function_prologue): Add dwarf2 support.
        * m68k.h (INCOMING_RETURN_ADDR_RTX, DWARF_FRAME_REGNUM): New macros.
        (INCOMING_FRAME_SP_OFFSET): Likewise.

        * integrate.c (expand_inline_function): Make sure there is at
        least one insn that can be used as an insertion point.

Wed Sep 24 21:34:06 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * dwarf2out.c: s/flag_verbose_asm/flag_debug_asm/

Wed Sep 24 22:05:30 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Bump for snapshot.

Wed Sep 24 17:36:23 1997  Doug Evans  <dje@canuck.cygnus.com>

        Bring over from FSF.

        Wed Sep 24 19:17:08 1997  Doug Evans  <dje@cygnus.com>

        * sparc/sparc.md (get_pc_via_call): Renamed from get_pc_sp32.
        (get_pc_via_rdpc): Renamed from get_pc_sp64.
        * sparc/sparc.c (finalize_pic): Update call to gen_get_pc_via_call.

        Wed Sep 24 18:38:22 1997  David S. Miller  <davem@tanya.rutgers.edu>

        * sparc/sparc.h (ASM_CPU_SPEC): Pass -Av9a for v8plus, ultrasparc.
        (TARGET_OPTIONS): Add -malign-loops=, -malign-jumps=,
        -malign-functions=.
        (sparc_align_{loops,jumps,funcs}_string): Declare.
        (sparc_align_{loops,jumps,funcs}): Declare.
        (DEFAULT_SPARC_ALIGN_FUNCS): New macro.
        (FUNCTION_BOUNDARY): Use sparc_align_funcs.
        (STACK_BIAS): Define.
        (SPARC_SIMM*_P): Cast to unsigned HOST_WIDE_INT first, then perform
        test.
        (SPARC_SETHI_P): New macro.
        (CONST_OK_FOR_LETTER_P): Use it.
        (ASM_OUTPUT_ALIGN_CODE): Define.
        (ASM_OUTPUT_LOOP_ALIGN): Define.
        * sparc/sparc.c (sparc_align_{loops,jumps,funcs}_string): New globals.
        (sparc_align_{loops,jumps,funcs}): New globals.
        (sparc_override_options): Handle -malign-loops=, -malign-jumps=,
        -malign-functions=.
        (move_operand): Use SPARC_SETHI_P.
        (arith_double_operand): Cast to unsigned HOST_WIDE_INT first, then
        perform test.
        (arith11_double_operand): Likewise.
        (arith10_double_operand): Likewise.
        (finalize_pic): Finish sparc64 support.
        (emit_move_sequence): Use SPARC_SETHI_P.  Simplify low part of
        64 bit constants if able.
        (output_fp_move_quad): Don't use fmovq unless TARGET_HARD_QUAD.
        (sparc_builtin_saveregs, sparc64 case): Don't save fp regs if
        ! TARGET_FPU.
        * sparc/sparc.md (*): Use GEN_INT instead of gen_rtx.
        (get_pc_sp32): Use for sparc64 as well.
        (lo_sum_di_sp{32,64}): Fix handling on 64 bit hosts.
        (sethi_di_sp64_const): Likewise.
        (movtf_cc_sp64): Check TARGET_HARD_QUAD.
        (cmp_zero_extract_sp64): Use unsigned HOST_WIDE_INT in cast.
        (ashlsi3, ashldi3, ashrsi3, ashrdi3, lshrsi3, lshrdi3): Likewise.

        Tue Sep 23 19:02:46 1997  Doug Evans  <dje@cygnus.com>

        * sparc/linux-aout.h (COMMENT_BEGIN): Delete.
        * sparc/linux.h (COMMENT_BEGIN): Likewise.
        * sparc/linux64.h (COMMENT_BEGIN): Likewise.

        Tue Sep 23 14:48:18 1997  David S. Miller  <davem@tanya.rutgers.edu>

        Add sparc64 linux support.
        * configure.in (sparc64-*-linux*): Recognize.  Add sparc/xm-sparc.h
        to xm_file list on 32-bit sparc-linux.
        * sparc/xm-sp64.h: New file.
        * sparc/linux64.h: New file.
        * sparc/xm-linux.h: Include some standard headers if not inhibit_libc.
        Don't include xm-sparc.h.
        * config/xm-linux.h (HAVE_PUTENV, HAVE_ATEXIT): Define.
        * glimits.h (LONG_MAX): Handle sparc64.

        Sat Sep 20 03:07:54 1997  Doug Evans  <dje@cygnus.com>

        * sparc/sysv4.h (ASM_COMMENT_START): Delete.
        * sparc.h (ASM_COMMENT_START): Define.
        * sparc.c (output_function_prologue): Use it.
        (sparc_flat_output_function_{epi,pro}logue): Likewise.

        Wed Sep 17 15:04:19 1997  Doug Evans  <dje@cygnus.com>

        * sparc/sysv4.h (ASM_OUTPUT_{FLOAT,DOUBLE,LONG_DOUBLE}): Delete,
        use sparc.h's copies.
        * sparc/sparc.h (ASM_OUTPUT_{FLOAT,DOUBLE,LONG_DOUBLE}): Print
        ascii form as well.

        Mon Sep  8 08:45:19 1997  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * sparc.c (dwarf2out_cfi_label): Add declaration.
        (save_regs, output_function_prologue): Remove cast for it.
        (sparc_flat_{save_restore,output_function_prologue): Likewise.
        ({save,restore}_regs): No longer inline.

Tue Sep 23 12:34:51 1997  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * fold-const.c (make_range): Correctly handle cases of converting
        from unsigned to signed type.

Tue Sep 23 12:34:51 1997  Bernd Schmidt  <crux@pool.informatik.rwth-aachen.de>

        * fold-const.c (merge_ranges): Make sure that if one range is subset
        of another, it will always be the second range.  Correct (+,-) case to
        account for this.

Tue Sep 23 08:32:51 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * final.c (final_end_function): Also do dwarf2 thing if
        DWARF2_DEBUGGING_INFO.
        (final_start_function): Likewise.

Tue Sep 23 01:15:50 1997  David S. Miller  <davem@tanya.rutgers.edu>

        * expmed.c (expand_divmod): If compute_mode is not the same as
        mode, handle the case where convert_modes() causes op1 to no
        longer be a CONST_INT.

        * reorg.c (dbr_schedule): At end of this pass, add REG_BR_PRED
        note holding get_jump_flags() calculation to all JUMP_INSNs.
        * rtl.h (enum reg_note): New note types REG_BR_PRED and REG_SAVE_AREA.
        * rtl.c (reg_note_name): Add new note types.

Tue Sep 23 00:59:54 1997  Jeffrey A Law  (law@cygnus.com)

        * rtlanal.c (computed_jump_p): Fix typo in last change.

Tue Sep 23 00:42:44 1997  H.J. Lu  (hjl@gnu.ai.mit.edu)

        * loop.c (indirect_jump_in_function_p): Return 0
        by default.

Tue Sep 23 00:33:55 1997  Jeffrey A Law  (law@cygnus.com)

        * rs6000/xm-rs6000.h: Fix thinko in last change.
        * rs6000/xm-sysv4.h: Likewise.

Mon Sep 22 19:33:53 1997  Jim Wilson  <wilson@cygnus.com>

        * mips.c (save_restore_insns): Only set RTX_FRAME_RELATED_P if store_p.

Mon Sep 22 14:41:00 1997  Jeffrey A Law  (law@cygnus.com)

        * reg-stack.c (find_blocks): Fix thinko in last change.

1997-09-21  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

        * m68k.c (output_function_prologue): Add dwarf2 support.

        * m68k.h (INCOMING_RETURN_ADDR_RTX, DWARF_FRAME_REGNUM,
        INCOMING_FRAME_SP_OFFSET): New definitions.
 
Mon Sep 22 11:36:42 1997  David S. Miller  <davem@tanya.rutgers.edu>

        * combine.c (try_combine): Use NULL_RTX instead of '0' where
        appropriate in calls to gen_rtx().
        * cse.c (cse_main): Likewise.
        * emit-rtl.c (gen_label_rtx): Likewise.
        * expr.c (init_expr_once): Likewise.
        * haifa-sched.c (flush_pending_lists, sched_analyze_insn,
        sched_analyze, init_rgn_data_dependences,
        compute_block_backward_dependences): Likewise.
        * sched.c (schedule_insns): Likewise.
        * varasm.c (immed_double_const): Likewise.

        * sparc.h (INCOMING_FRAME_SP_OFFSET): Define to
        SPARC_STACK_BIAS for sake of dwarf2 on sparc64.

Mon Sep 22 11:21:33 1997  J. Kean Johnston  <jkj@sco.com>

        * i386/sco5.h: Make ELF default file format and add -mcoff/-melf..
        (MULTILIB_DEFAULTS): Define.
        (ASM_SPEC, CPP_SPEC): Handle -mcoff.
        (STARTFILE_SPEC, ENDFILE_SPEC, LINK_SPEC): Likewise.
        (LIBGCC_SPEC): Likewise.
        (MASK_COFF, TARGET_COFF, TARGET_ELF): Define.
        (SUBTARGET_SWITCHES): Add -mcoff and -melf.
        * i386/t-sco5 (CRTSTUFF_T_CFLAGS): Add -fPIC.
        (CRTSTUFF_T_CFLAGS_S): Tweak for COFF.
        (EXTRA_PARTS, TAROUTOPTS): Delete.
        (libgcc1-elf, libgcc2-elf, libgcc-elf targets): Delete.
        (MULTILIB_OPTIONS): Define.
        (MULTILIB_DIRNAMES, MULTILIB_EXCEPTIONS): Likewise.
        (MULTILIB_MATCHE, MULTILIB_EXTRA_OPTS): Likewise.

Mon Sep 22 02:10:43 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Bump for snapshot.

Sun Sep 21 17:45:45 1997  Jeffrey A Law  (law@cygnus.com)

        * loop.c (loop_number): Delete function.  Change all references
        to use uid_loop_num array.
        * loop.h (loop_number): Delete declaration.
        * unroll.c (unroll_loop): Change "loop_number" references to
        use uid_loop_num instead.

        * loop.c (loop_unroll_factor): Move outside #ifdef HAIFA
        conditional.
        (loop_unroll_iter): Remove unused variable and all references.
        (loop_optimize): Always allocate and clear space for loop_unroll_factor.
        (insert_bct): Fix minor formatting problems.
        * loop.h (loop_unroll_factor): Move decl outside #ifdef HAIFA.
        (loop_unroll_iter): Removed unused decl.
        * unroll.c (unroll_loop): Remove code to set loop_unroll_iter.
        Always record the unrolling factor.

        * cse.c (simplify_relational_operation): Set h0u just like h0s.
        Similarly for h1u and h1s.

        * flow.c (jmp_uses_reg_or_mem): Deleted unused function.
        (find_basic_blocks): Use computed_jump_p to determine if a
        particular JUMP_INSN is a computed jump.
        * reg-stack.c (find_blocks): Use computed_jump_p to determine
        if a particular JUMP_INSN is a computed jump.
        * rtlanal.c (jmp_uses_reg_or_mem): New function.
        (computed_jump_p): Likewise.
        * rtl.h (computed_jump_p): Declare.
        * genattrtab.c (pc_rtx): Define and initialize.
        * loop.c (loop_optimize): Always determine if the current
        function has a computed jump.
        (indirect_jump_in_function_p): Use computed_jump_p to determine
        if a particular JUMP_INSN is a computed jump.

        * loop.c (fix_bct_param): Delete unused function.
        (check_bct_param): Likewise.

Sat Sep 20 16:22:06 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * frame.c (__deregister_frame): Check properly for initialized object.

Fri Sep 19 20:51:03 1997  H.J. Lu  (hjl@gnu.ai.mit.edu)

        * alpha/linux.h (HANDLE_SYSV_PRAGMA): Defined.

Fri Sep 19 18:53:50 1997 J"orn Rennecke <amylaar@cygnus.co.uk>

        * jump.c (thread_jumps): check can_reverse_comparison_p before
        threading a reversed-condition jump.

        * sched.c (update_flow_info): Don't pass SCRATCH to dead_or_set_p.
        * haifa-sched.c (update_flow_info): Likewise.

Thu Sep 18 21:13:40 1997  Jeffrey A Law  (law@cygnus.com)

        * Makefile.in (BOOT_CFLAGS): Use -O2.

        * configure.in (strtoul, bsearch): Have autoconf check for these
        functions.
        * configure, config.in: Rebuilt.

        * m68k/xm-mot3300.h (alloca): Properly declare if __STDC__.
        * mips/mips.h (alloca): Likewise.
        * rs6000/xm-rs6000.h (alloca): Likewise.
        * rs6000/xm-sysv4.h: Likewise.

Thu Sep 18 14:22:22 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * final.c (final_scan_insn): Hand BARRIERs off to the dwarf2 code.
        * dwarf2out.c (dwarf2out_frame_debug): Pass the whole insn along.
        (dwarf2out_stack_adjust): A BARRIER resets the args space to 0.

        * except.c (end_eh_unwinder): Subtract 1 from return address.
        * libgcc2.c (__throw): Likewise.
        (find_exception_handler): Don't change PC here.  Compare end with >.

Thu Sep 18 10:43:07 1997  Nick Clifton  <nickc@cygnus.com>
 
        * v850.c (compute_register_save_size): Correct register
        number.
        * v850.md (save_interrupt, return_interrupt): Correct
        register number.
        * v850/lib1funcs.asm (save_interrupt): Correct register number.
        (return_interrupt): Use stack pointer, not element pointer.

1997-09-18  Brendan Kehoe  <brendan@lisa.cygnus.com>

        * configure.in, configure: Make sure to create the stage* and include
        symbolic links in each subdirectory.

Thu Sep 18 01:47:06 1997  Jeffrey A Law  (law@cygnus.com)

        * pa.md (reload_peepholes): Don't allow addresses with side
        effects for the memory operand.

Wed Sep 17 18:19:53 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * libgcc2.c (find_exception_handler): Subtract one from our PC when
        looking for a handler, to avoid hitting the beginning of the next
        region.

        * except.c (expand_builtin_set_return_addr_reg): Use force_operand.

Wed Sep 17 18:33:59 1997  Jeffrey A Law  (law@cygnus.com)

        * mips/abi64.h (LONG_MAX_SPEC): Define.
        * mips.h (LONG_MAX_SPEC): Define.
        (CPP_SPEC): Include long_max_spec.
        (EXTRA_SPECS): Include long_max_spec.

Wed Sep 17 14:11:38 1997  Jeffrey A Law  (law@cygnus.com)

        * v850.c (construct_save_jarl): Fix thinko in last change.

Wed Sep 17 09:53:07 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Bump for snapshot.

Tue Sep 16 14:22:36 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * libgcc2.c (find_exception_handler): Not found is -1.

        * integrate.c (expand_inline_function): Move expand_start_bindings
        after expanding the arguments.

Tue Sep 16 11:13:46 1997  Jim Wilson  <wilson@cygnus.com>

        * expr.c (expand_expr): Remove previous incorrect change.
        If target and slot has no DECL_RTL, then call mark_addressable
        again for the slot after we give it RTL.

Tue Sep 16 09:18:52 1997  Jason Merrill  (jason@cygnus.com)

        * expr.c (expand_expr, case TARGET_EXPR): Call mark_addressable
        again for the slot after we give it RTL.

Tue Sep 16 00:13:20 1997  Nick Clifton  <nickc@cygnus.com>

        * v850.c (register_is_ok_for_epilogue,
        pattern_is_ok_for_epilogue, construct_restore_jr,
        pattern_is_ok_for_prologue, construct_save_jarl): New functions.

        * v850.h (pattern_is_ok_for_prologue,
        pattern_is_ok_for_epilogue, register_is_ok_for_epilogue): New
        predicates.

        * v850.md: Replace prologue and epilogue patterns with a
        match_parallel pattern.

Mon Sep 15 22:53:01 1997  Jeffrey A Law  (law@cygnus.com)

        * aclocal.m4: Add replacement for AC_PROG_INSTALL.
        * configure.in: Use EGCS_PROG_INSTALL.

Mon Sep 15 22:40:55 1997  Jim Wilson  (wilson@cygnus.com)

        * dwarf2out.c (gen_subprogram_die): Handle redefinition of an
        extern inline function.

Mon Sep 15 22:40:55 1997  Richard Henderson  (rth@cygnus.com)

        * dwarf2out.c (reg_loc_descriptor): Fix prototype.
        (concat_loc_descriptor): New function.
        (loc_descriptor): Call it.
        (add_AT_location_description): Also elide the descriptor if both
        halves of a CONCAT are pseudos.
        (add_location_or_const_value_attribute): Recognize CONCAT too.

Mon Sep 15 15:24:00 1997  Richard Henderson  <rth@cygnus.com>

        * alpha.md (movdi): Handle CONST_DOUBLE for TARGET_BUILD_CONSTANTS.

        * alpha/alpha.c (output_prolog): New variable sa_reg.  Use it for
        out-or-range reg_offset.
        (output_epilog): Likewise.

Mon Sep 15 15:39:26 1997  Jeffrey A Law  (law@cygnus.com)

        * cse.c (simplify_relational_operation): If MODE specifies a
        mode wider than HOST_WIDE_INT, then the high word of a CONST_INT
        is derived from the sign bit of the low word.

Mon Sep 15 11:43:38 1997  Jason Merrill  <jason@yorick.cygnus.com>

        Support dwarf2 unwinding on PUSH_ROUNDING targets like the x86.

        * dwarf2.h: Add DW_CFA_GNU_args_size.
        * frame.c (execute_cfa_insn): Likewise.
        * dwarf2out.c (dwarf_cfi_name, output_cfi): Likewise.
        (dwarf2out_args_size, dwarf2out_stack_adjust): New fns.
        (dwarf2out_frame_debug): If this isn't a prologue or epilogue
        insn, hand it off to dwarf2out_stack_adjust.
        (dwarf2out_begin_prologue): Initialize args_size.
        * frame.h (struct frame_state): Add args_size.
        * libgcc2.c (__throw): Use args_size.
        * final.c (final_scan_insn): If we push args, hand off all insns
        to dwarf2out_frame_debug.
        * defaults.h (DWARF2_UNWIND_INFO): OK for !ACCUMULATE_OUTGOING_ARGS.

        * dwarf2out.c dwarf2out_frame_debug): Fix typo.
        Handle epilogue restore of SP from FP.
        * emit-rtl.c (gen_sequence): Still generate a sequence if the 
        lone insn has RTX_FRAME_RELATED_P set.

        * frame.c (extract_cie_info): Handle "e" augmentation.
        * dwarf2out.c (ASM_OUTPUT_DWARF_*): Provide definitions in the
        absence of UNALIGNED_*_ASM_OP.
        (UNALIGNED_*_ASM_OP): Only provide defaults if OBJECT_FORMAT_ELF.
        (output_call_frame_info): Use "e" instead of "z" for augmentation.
        Don't emit augmentation fields length.
        (dwarf2out_do_frame): Move outside of #ifdefs.
        * defaults.h (DWARF2_UNWIND_INFO): Don't require unaligned data
        opcodes.

        * sparc.h (UNALIGNED_INT_ASM_OP et al): Don't define here after all.
        * sparc/sysv4.h (UNALIGNED_INT_ASM_OP): Define here.
        * sparc/sunos4.h (DWARF2_UNWIND_INFO): Define to 0.
        * sparc/sun4gas.h: New file.
        * configure.in: Use sun4gas.h if SunOS 4 --with-gnu-as.

        * collect2.c (write_c_file_stat, write_c_file_glob): Declare 
        __register_frame_table and __deregister_frame.

1997-09-15  Brendan Kehoe  <brendan@cygnus.com>

        * except.c (find_exception_handler_labels): Use xmalloc instead of
        alloca, since MAX_LABELNO - MIN_LABELNO can be more than 1 million
        in some cases.

Sun Sep 14 21:01:23 1997  Jeffrey A Law  (law@cygnus.com)

        * Makefile.in: Various changes to build info files
        in the object tree rather than the source tree.

Sun Sep 14 12:24:30 1997  Jeffrey A Law  (law@cygnus.com)

        * fixinc.math: New file to fix math.h on some systems.
        * configure.in (freebsd, netbsd): Use fixinc.math on these
        systems.
        * configure: Rebuilt.

Sun Sep 14 11:11:05 1997  Jeffrey A Law  (law@cygnus.com)

        * regmove.c (regmove_optimize): If we end up moving the
        original insn due to lifetime overlaps, make sure to move
        REG_NOTES too.

Sat Sep 13 15:51:11 1997  Manfred Hollstein  <manfred@s-direktnet.de>

        * Makefile.in (INSTALL_{PROGRAM,DATA}): Use value found by configure.

Sat Sep 13 12:57:26 1997  Jeffrey A Law  (law@cygnus.com)

        * haifa-sched.c (add_branch_dependences): Make each insn in
        a SCHED_GROUP_P block explicitly depend on the previous insn.

Fri Sep 12 13:49:58 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * except.h: Prototype dwarf2 hooks.
        * expr.c: Adjust.

Thu Sep 11 17:43:55 1997  Jim Wilson  <wilson@cygnus.com>

        * configure.in (native_prefix): Delete.
        (mips-dec-netbsd): Don't set prefix.
        (*linux*): Don't set prefix.

Thu Sep 11 15:48:32 1997  Fred Fish  <fnf@ninemoons.com>

        * protoize.c: Include <varargs.h> only if HAVE_VARARGS_H is
        defined.  If not defined, include <sys/varargs.h> if
        HAVE_SYS_VARARGS_H is defined.
        * configure.in: Test for varargs.h and sys/varargs.h.
        * configure: Regenerate with autoconf.
        * config.in: Regenerate with autoheader.

        * cpplib.c (quote_string): Cast first arg of sprintf call
        from "unsigned char *" to "char *".
        (output_line_command): Ditto.
        (macroexpand): Ditto.
        (do_line): Cast atoi arg from "unsigned char *" to "char *".

Wed Sep 10 21:37:30 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Bump for snapshot.

        * Makefile.in (compare): Exit with nonzero status if there
        are comparison failures.  Note which files failed the
        comparison test in .bad_compare.

Wed Sep 10 17:05:46 1997  H.J. Lu  (hjl@gnu.ai.mit.edu)

        * config/alpha/elf.h (CPP_PREDEFINES): Remove -D__PIC__ -D__pic__.

Wed Sep 10 16:37:28 1997  Fred Fish  <fnf@ninemoons.com>

        * Makefile.in (LN, LN_S): New macros, use where appropriate.
        * aclocal.m4 (GCC_PROG_LN_S, GCC_PROG_LN): New tests.
        * configure.in: Use GCC_PROG_LN_S and GCC_PROG_LN.
        * configure: Regenerated.

Thu Sep 11 11:09:43 1997  Jeffrey A Law  (law@cygnus.com)

        * loop.c (strength_reduce): Fix typo.

Wed Sep 10 16:01:15 1997  Jim Wilson  <wilson@cygnus.com>

        * m88k/m88k.c (struct option): Rename to struct options.
        * m88k/dolph.h (INITIALIZE_TRAMPOLINE): Delete here.
        * m88k/sysv3.h (INITIALIZE_TRAMPOLINE): Delete ifdef and comments.
        * libgcc2.c (__enable_execute_stack): Check for __sysV88__ not
        __DOLPHIN__ or sysV88.

Wed Sep 10 14:58:40 1997  Jim Wilson  <wilson@cygnus.com>

        * emit-rtl.c (gen_lowpart_common): For a SUBREG, add in word when
        create new subreg.

Wed Sep 10 15:19:22 1997  Jeffrey A Law  (law@cygnus.com)

        * config.sub: Accept 'amigados' for backward compatability.

Wed Sep 10 14:05:08 1997  H.J. Lu  (hjl@gnu.ai.mit.edu)

        * Makefile.in (testsuite/site.exp): New target.
        (check-gcc, check-g++): Depend on testsuite/site.exp.
        Don't stop for failure.

Wed Sep 10 12:59:57 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * expr.c (expand_builtin): Only support __builtin_dwarf_fp_regnum()
        if DWARF2_UNWIND_INFO.

Wed Sep 10 11:49:20 1997  Jason Merrill  <jason@yorick.cygnus.com>

        Add support for exception handling using DWARF 2 frame unwind info.
        Currently works on SPARC and MIPS, and almost on x86.
        
        * libgcc2.c (get_reg, put_reg, get_return_addr, put_return_addr,
        next_stack_level, in_reg_window): Helper fns.
        (__throw): Implement for DWARF2_UNWIND_INFO.

        * expr.c (expand_builtin): Handle builtins used by __throw.
        * tree.h (enum built_in_function): Add builtins used by __throw.
        * c-decl.c (init_decl_processing): Declare builtins used by __throw.
        * dwarf2out.c (expand_builtin_dwarf_fp_regnum): Used by __throw.
        * except.c (expand_builtin_unwind_init): Hook for dwarf2 __throw.
        (expand_builtin_extract_return_addr): Likewise.
        (expand_builtin_frob_return_addr): Likewise.
        (expand_builtin_set_return_addr_reg): Likewise.
        (expand_builtin_eh_stub): Likewise.
        (expand_builtin_set_eh_regs): Likewise.
        (eh_regs): Choose two call-clobbered registers for passing back values.

        * frame.c, frame.h: New files for parsing dwarf 2 frame info.
        * Makefile.in (LIB2ADD): New variable.  Add $(srcdir)/frame.c.
        (libgcc2.a): Use it instead of $(LIB2FUNCS_EXTRA) $(LANG_LIB2FUNCS)
        (stmp-multilib): Likewise.
        ($(T)crtbegin.o, $(T)crtend.o): Add -fno-exceptions.

        * except.c: #include "defaults.h".
        (exceptions_via_longjmp): Default depends on DWARF2_UNWIND_INFO.
        (emit_throw): Don't defeat assemble_external if DWARF2_UNWIND_INFO.
        (register_exception_table_p): New fn.
        (start_eh_unwinder): Don't do anything if DWARF2_UNWIND_INFO.
        (end_eh_unwinder): Likewise.

        * crtstuff.c: Wrap .eh_frame section, use EH_FRAME_SECTION_ASM_OP, 
        call __register_frame and __deregister_frame as needed.
        * varasm.c (eh_frame_section): New fn if EH_FRAME_SECTION_ASM_OP.
        * dwarf2out.c (EH_FRAME_SECTION): Now a function-like macro.  Check
        EH_FRAME_SECTION_ASM_OP.
        * sparc/sysv4.h (EH_FRAME_SECTION_ASM_OP): Define.
        * mips/iris6.h: (EH_FRAME_SECTION_ASM_OP): Define.
        (LINK_SPEC): Add __EH_FRAME_BEGIN__ to hidden symbols.

        * dwarf2out.c (output_call_frame_info): If no support for
        EXCEPTION_SECTION, mark the start of the frame info with a
        collectable tag.
        * collect2.c (frame_tables): New list.
        (is_ctor_dtor): Recognise frame entries.
        (scan_prog_file): Likewise.
        (main): Pass -fno-exceptions to sub-compile.  Also do collection
        if there are any frame entries.
        (write_c_file_stat): Call __register_frame_table and
        __deregister_frame as needed.
        (write_c_file_glob): Likewise.

        * defaults.h (DWARF2_UNWIND_INFO): Default to 1 if supported.  
        Also require unaligned reloc support.
        * sparc.h (UNALIGNED_SHORT_ASM_OP, UNALIGNED_INT_ASM_OP,
        UNALIGNED_DOUBLE_INT_ASM_OP): Define here.
        * sparc/sysv4.h: Not here.

        * toplev.c (compile_file): Call dwarf2out_frame_{init,finish}.
        * dwarf2out.c (dwarf2out_init): Don't call dwarf2out_frame_init.
        (dwarf2out_finish): Don't call dwarf2out_frame_finish.

        * libgcc2.c (L_eh): Reorganize, moving code shared by different
        EH implementations to the top.
        (find_exception_handler): Split out.  Start from 0.  Compare against
        end with >=.
        (__find_first_exception_table_match): Use it.
        * except.c (output_exception_table): Don't do anything if there's
        no table.  Don't output a first entry of zeroes.
        (eh_outer_context): Adjust properly.
        (add_eh_table_entry): Use xrealloc.
        * toplev.c (compile_file): Just call output_exception_table.

Wed Sep 10  11:30:36 1997  Jason Merrill  <jason@cygnus.com>

        * i386.c (ix86_prologue): Add dwarf2 support for !do_rtl case.

Wed Sep 10 08:17:10 1997  Torbjorn Granlund  <tege@pdc.kth..se>

        * except.c (eh_outer_context): Do masking using expand_and.

Wed Sep 10 01:38:30 1997  Doug Evans  <dje@cygnus.com>

        Add port done awhile ago for the ARC cpu.
        * arc/arc.h: New file.
        * arc/arc.c: New file.
        * arc/arc.md: New file.
        * arc/initfini.c: New file.
        * arc/lib1funcs.asm: New file.
        * arc/t-arc: New file.
        * arc/xm-arc.h: New file.
        * ginclude/va-arc.h: New file.
        * ginclude/stdarg.h: Include va-arc.h ifdef __arc__.
        * ginclude/varargs.h: Likewise.
        * Makefile.in (USER_H): Add va-arc.h.
        * configure.in (arc-*-elf*): Recognize.
        * longlong.h: Add ARC support.

Wed Sep 10 01:32:54 1997  Jeffrey A Law  (law@cygnus.com)

        * expr.c (clear_storage): Use CONST0_RTX instead of const0_rtx.
        when clearing non-BLKmode data.

Wed Sep 10 00:29:29 1997  Manfred Hollstein  <manfred@s-direktnet.de>

        * m88k/sysv3.h (INITIALIZE_TRAMPOLINE) Define.
        * libgcc2.c (__enable_execute_stack): Provide for sysV88 too.

        * xm-m88k.h (USG): Only define if it hasn't already been defined.

        * Makefile.in (risky-stage1): Delete gratutious whitespace.

        * Makefile.in (clean): Delete libgcc1-test.

        * Makefile.in (INSTALL): cd to $(srcdir) before running texinfo.

Tue Sep  9 17:07:36 1997  Stan Cox  <coxs@dg-rtp.dg.com>

        * m88k.c (m88k_expand_prologue): Set MEM_IN_STRUCT_P of va_list
        template.

Tue Sep  9 09:50:02 1997  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * dwarf2out.c (output_call_frame_info): Call named_section.

Tue Sep  9 09:12:17 1997  Jeffrey A Law  (law@cygnus.com)

        * haifa-sched.c (print_value): Fix last change.

Tue Sep  9 01:30:37 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * mips.h (DWARF_FRAME_REGNUM): Use the same numbering regardless of
        write_symbols.

Mon Sep  8 16:32:43 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * mips.c (function_prologue): Set up the CFA when ABI_32.

        * sparc.c (save_regs): Check dwarf2out_do_frame instead of DWARF2_DEBUG
        for dwarf2 unwind info.
        (output_function_prologue, sparc_flat_output_function_prologue): Same.

        * final.c (final_end_function): Check dwarf2out_do_frame instead
        of DWARF2_DEBUG for dwarf2 unwind info.
        (final_scan_insn): Likewise.
        (final_start_function): Likewise.  Initialize dwarf2 frame debug here.
        (final): Not here.

        * expr.c (expand_builtin_return_addr): Only SETUP_FRAME_ADDRESSES if
        count > 0.

        * varasm.c (exception_section): Check EXCEPTION_SECTION first.

Mon Sep  8 15:15:11 1997  Nick Clifton  <nickc@cygnus.com>

        * v850.h (ASM_SPEC): Pass on target processor.
        (CPP_PREDEFINES): Only define if not already specified.
        (TARGET_VERSION): Only define if not already specified.
        (MASK_CPU, MASK_V850, MASK_DEFAULT): Bits to specify target
        processor.
        (EXTRA_SWITCHES): Extra entries in the switches array.
        (TARGET_DEFAULT): Set default target processor.

Mon Sep  8 18:26:35 1997  Jim Wilson  <wilson@cygnus.com>

        * m68k.h (MACHINE_STATE_SAVE, MACHINE_STATE_RESTORE): In MOTOROLA
        cases, add %# and %/, and add : to make them into extended asms.

Sun Sep  7 23:57:50 1997  Weiwen Liu  <liu@hepunix.physics.yale.edu>

        * alias.c (init_alias_analysis): Clean up incompatible pointer
        type warning in bzero.
        * regmove.c (regmove_optimize): Ditto.
        * haifa-sched.c (find_rgns): Ditto.

        * haifa-sched.c (print_value): Clean up ptr->int cast
        warnings.

Sun Sep  7 23:18:32 1997  Fred Fish  <fnf@ninemoons.com>

        * INSTALL: Change 'amigados' to 'amigaos' to match current usage.
        * install.texi (Configurations): Ditto.
        * config.sub: Ditto.

Sun Sep  7 22:56:56 1997  Weiwen Liu  (liu@hepvms.physics.yale.edu)

        * Makefile.in (sdbout.o): Depend on insn-config.h.

Sun Sep  7 18:44:50 1997  Jim Wilson  <wilson@cygnus.com>

        * m68k/m68k.h (TARGET_SWITCHES): For 68000, 68302, subtract MASK_68881.
        For 68303, 68332, cpu32, subtract MASK_68040_ONLY.

Sun Sep  7 18:30:46 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * dwarf2out.c (dwarf2out_frame_debug): Assume that in a PARALLEL
        prologue insn, only the first elt is significant.
        (output_call_frame_info): For exception handling, always use 4-byte
        fields as specified by the dwarf2 spec.
        Don't skip trivial FDEs.

Sun Sep  7 14:19:39 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Bump for snapshot.

Sun Sep  7 14:17:36 1997  Torbjorn Granlund  (tege@pdc.kth.se)

        * expmed.c (expand_divmod): Make op1_is_pow2 depend on unsignedp
        for negative constants.  Promote EXACT_DIV_EXPR to TRUNC_DIV_EXPR
        when op1_is_pow2.

Sun Sep  7 13:46:46 1997  Jeffrey A Law  (law@cygnus.com)

        * final.c (shorten_branches): During first pass, assume worst
        possible alignment for ADDR_VEC and ADDR_VEC_DIFF insns.

        * Makefile.in (distclean): Remove various things left around
        by running the testsuite.

Sun Sep  7 13:16:06 1997  Manfred Hollstein  <manfred@s-direktnet.de>

        * configure.in (out_file): Emit definition to config.status in order
        to have a defined value for configure.lang.
        * configure: Re-built.

Sun Sep  7 09:59:08 1997  Jan-Jaap van der Heijden (J.J.vanderHeijden@student.utwente.nl)

        * configure.in: Make symlink to as-new rather than as.new.  Similarly
        for ld-new.
        * configure: Rebuilt.

Fri Sep  5 16:54:55 1997  Jim Wilson  <wilson@cygnus.com>

        * profile.c (output_func_start_profiler): Set DECL_EXTERNAL to zero.

Fri Sep  5 16:16:44 1997  Christian Kuehnke  <Christian.Kuehnke@arbi.Informatik.Uni-Oldenburg.DE>

        * sparc/sparc.md: Add ultrasparc scheduling support.
        * sparc/sparc.h (RTX_COSTS): For MULT give v9 a cost of 25 insns.

Fri Sep  5 14:04:59 1997  Philippe De Muyter  <phdm@info.ucl.ac.be>

        * integrate.c (save_for_inline_copying): Use 0, not NULL_PTR,
        as initial value for real_label_map.
        (copy_for_inline): Likewise.

Fri Sep  5 13:36:44 1997  J"orn Rennecke <amylaar@cygnus.co.uk>

        * sched.c (update_flow_info) When looking if to set found_split_dest
        or found_orig_dest, look at all parts of a PARALLEL.
        * haifa-sched.c (update_flow_info): Likewise.

Fri Sep  5 10:08:44 1997  Jeffrey A Law  (law@cygnus.com)

        * v850: New directory for v850 port.
        * v850/lib1funcs.asm: New file.
        * t-v850, v850.c, v850.h, v850.md, xm-v850.h: New files.
        * ginclude/va-v850.h: New file.
        * ginclude/varargs.h, ginclude/stdarg.h: Include va-mn10200.h.
        * configure.in (mn10200-*-*): New target.
        * configure: Rebuilt.
        * config.sub: Handle v850-elf.
        * Makefile.in (USER_H): Add va-mn10200.h. 
        * invoke.texi: Document v850 stuff.

Fri Sep  5 09:37:50 1997  Jim Wilson  (wilson@cygnus.com)

        * sdbout.c (plain_type_1, case ARRAY_TYPE): Verify that TYPE_DOMAIN
        has integer TYPE_{MAX,MIN}_VALUE before using them.

        * m68k/m68k.h (MACHINE_STATE_SAVE, MACHINE_STATE_RESTORE): Add
        __HPUX_ASM__ versions.

Fri Sep  5 09:08:44 1997  Jeffrey A Law  (law@cygnus.com)

        * install.sh: Delete duplicate install script.

Thu Sep  4 23:14:27 1997  Stan Cox  (coxs@dg-rtp.dg.com)

        * reg-stack.c (subst_stack_regs): Pop the stack register for a
        computed goto which sets the same stack register.

        * reg-stack.c (compare_for_stack_reg): Swap only if the source and
        destination are both on the regstack.
        (subst_stack_regs_pat): Put the destination at the top of the regstack.

Thu Sep  4 15:02:27 1997  Jim Wilson  <wilson@cygnus.com>

        * mips.md (nonlocal_goto_receiver): Define.

        * profile.c (output_arc_profiler): Check next_insert_after for non
        NULL before deferencing it.

        * i386/t-sol2 (TARGET_LIBGCC2_CFLAGS): Define to -fPIC.

Thu Sep  4 14:51:57 1997  Jeffrey A Law  (law@cygnus.com)

        * i386.h (CPP_CPU_DEFAULT): Avoid using #elif.

Thu Sep  4 15:01:49 1997  Michael Meissner  <meissner@cygnus.com>

        * toplev.c (rest_of_compilation): For passes starting with
        flow_analysis, use print_rtl_with_bb instead of print_rtl.

        * print-rtl.c (print_rtl_single): Print a single rtl value to a
        file.

        * flow.c (print_rtl_with_bb): Print which insns start and end
        basic blocks.  For the start of a basic block, also print the live
        information.

Thu Sep  4 11:51:43 1997  Jim Wilson  <wilson@cygnus.com>

        * toplev.c (main): Change #elif to #else/#ifdef

        * tlink.c: Include ctype.h.
        * ginclude/va-mips.h: Add _VA_MIPS_H_ENUM ifdef/define/endif.

Thu Sep  4 11:17:16 1997  Mikeael Meissner  (meissner@cygnus.com)

        * bitmap.c: Conditionally include stdlib.h.
        (free): Provide a declaration if NEED_DECLARATION_FREE.

Thu Sep  4 09:58:53 1997  Joel Sherrill  (joel@OARcorp.com)

        * i960/i960.h: Added default for SUBTARGET_SWITCHES macro.

Thu Sep  4 09:53:20 1997  Jim Wilson  (wilson@cygnus.com)

        * profile.c (output_arc_profiler): Verify next_insert_after is an
        INSN before and after skipping a stack pop.

Thu Sep  4 07:39:19 1997  J"orn Rennecke <amylaar@cygnus.co.uk>

        * final.c (shorten_branches): Don't count the lengths of deleted
        instructions.

Thu Sep  4 09:43:01 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Bump for snapshot.

Thu Sep  4 11:04:21 1997  Michael Meissner  <meissner@cygnus.com>

        * bitmap.h (EXECUTE_IF_AND_IN_BITMAP): New macro, to iterate over
        two bitmaps ANDed together.
        (bitmap_print): Declare.

        * bitmap.c (function_obstack): Don't declare any more.
        (bitmap_obstack): Obstack for allocating links from.
        (bitmap_obstack_init): New static to say whether to initialize
        bitmap_obstack.
        (bitmap_element_allocate): Use bitmap_obstack to allocate from.
        (bitmap_release_memory): Free all memory allocated from
        bitmap_obstack.

        * basic-block.h (EXECUTE_IF_AND_IN_REG_SET): New macro, invoke
        EXECUTE_IF_AND_IN_BITMAP.

Wed Sep  3 10:39:42 1997  Jim Wilson  <wilson@cygnus.com>

        * alias.c (true_dependence): Address with AND can alias scalars.
        (anti_dependence, output_dependence): Likewise.
        
        * alias.c (true_dependence): Test x for BLKmode, in addition to mem.

Wed Sep  3 09:28:50 CDT 1997  Joel Sherrill (joel@OARcorp.com)

        * i386/go32-rtems.h, i386/rtems.h, i960/rtems.h, m68k/rtems.h,
          mips/rtems64.h, pa/rtems.h, rs6000/rtems.h, sh/rtems.h,
          sparc/rtems.h (subtarget_switches): Removed SUBTARGET_SWITCHES
          definitions.  Use -qrtems instead of -mrtems.

Wed Sep  3 09:05:41 1997  Robert Lipe  (robert@dgii.com)

        * xm-sco5.h (sys_siglist): Define.
        (SYS_SIGLIST_DECLARED): Likewise.

Tue Sep  2 23:33:33 1997  Jeffrey A Law  (law@cygnus.com)

        * expr.c (convert_move): Handle truncation from TQFmode to QFmode.

Wed Sep  3 02:09:30 1997  Torbjorn Granlund  <tege@pdc.kth..se>

        * except.c (eh_outer_context): Expand masking operation using
        expand_binop.

Tue Sep  2 18:09:39 1997  Jim Wilson  <wilson@cygnus.com>

        * alpha.md (floatdisf2-1): New pattern.

Tue Sep  2 18:41:55 1997  Jeffrey A Law  (law@cygnus.com)

        * xm-svr4.h (SYS_SIGLIST_DECLARED): Define.
        * xm-news.h (SYS_SIGLIST_DECLARED): Likewise.
        * xm-sysv4.h (SYS_SIGLIST_DECLARED): Likewise.
        * gcc.texi: Note that if you define sys_siglist that you should
        also define SYS_SIGLIST_DECLARED.

        * mn10200.h (INITIALIZE_TRAMPOLINE): PC relative instructions
        are relative to the next instruction, not the current instruction.

Tue Sep  2 14:22:43 1997  Jim Wilson  <wilson@cygnus.com>

        * local-alloc.c (contains_replace_regs): New function.
        (update_equiv_regs): When adding a REG_EQUIV note for a set of a MEM,
        verify that there is no existing REG_EQUIV note, and add a call to
        contains_place_regs.

Tue Sep  2 12:48:11 1997  H.J. Lu  (hjl@gnu.ai.mit.edu)

        * config/alpha/elf.h (CPP_PREDEFINES): Add -D__PIC__ -D__pic__.
        (STARTFILE_SPEC): Always use crtbegin.o%s
        (ENDFILE_SPEC): Always use crtend.o%s.

Tue Sep  2 12:00:36 1997  Jim Wilson  <wilson@cygnus.com>

        * alpha/alpha.h (PREFERRED_RELOAD_CLASS): Return NO_REGS if NO_REGS
        is passed in.
        * emit-rtl.c (gen_lowpart_common): Add code to convert CONST_INT to
        SFmode for 64 bit hosts.
        
Tue Sep  2 13:42:38 1997  Paul N. Hilfinger  <hilfingr@CS.Berkeley.EDU>

        * fixincludes: Permits spaces between # and define.  Discard C++
        comments in sys/pci.h on HP/UX 10.20.

Mon Sep  1 22:13:18 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Bump for snapshot.

        * pa.c (restore_unscaled_index_insn_codes): New function.
        (record_unscaled_index_insn_codes): Likewise.
        (output_function_prologue): Call restore_unscaled_index_insn_codes.
        (output_function_epilogue): Free memory for unscaled_index_insn_codes.
        (pa_reorg): Call record_unscaled_index_insn_codes.

        * haifa-sched.c (move_insn): Handle notes correctly for insns
        with SCHED_GROUP_P set.
        
Mon Sep  1 16:58:57 1997  H.J. Lu  (hjl@gnu.ai.mit.edu)

        * alpha/xm-linux.h (USE_BFD): Undef before define.

Mon Sep  1 16:25:34 1997  Jim Wilson  <wilson@cygnus.com>

        * cse.c (cse_insn): Don't record BLKmode values.

Mon Sep  1 11:25:47 1997  Stephen Williams  (steve@icarus.icarus.com)

        * i960.h (LINK_SPEC): Handle "-mjX" and "-mrp" switches.

Mon Sep  1 08:29:46 1997  Jeffrey A Law  (law@cygnus.com)

        * cccp.c (sys_errlist): Remove special 4.4bsd declaration.
        * collect2.c (sys_errlist): Likewise.
        * cpplib.c (sys_errlist): Likewise.
        * gcc.c (sys_errlist): Likewise.
        * protoize (sys_errlist): Likewise.
        * configure.in: Check for strerror.
        * xm-freebsd.h (HAVE_STRERROR): Remove definition.
        * xm-gnu.h (HAVE_STRERROR): Likewise.
        * xm-linux.h (HAVE_STRERROR): Likewise.
        * xm-netbsd.h (HAVE_STRERROR): Likewise.
        * xm-bsd386.h (HAVE_STRERROR): Likewise.
        * xm-cygwin32.h (HAVE_STRERROR): Likewise.
        * xm-dos.h (HAVE_STRERROR): Likewise.
        * xm-mingw32.h (HAVE_STRERROR): Likewise.
        * xm-pa.h (HAVE_STRERROR): Likewise.
        * xm-papro.h (HAVE_STRERROR): Likewise.
        * xm-sysv4.h (HAVE_STRERROR): Likewise.
        * configure, config.in: Rebuilt.

        * Makefile.in: Add several missing "else true" clauses.

        * collect2.c: Change DONT_DECLARE_SYS_SIGLIST to SYS_SIGLIST_DECLARED.
        * mips-tfile.c: Likewise.
        * gcc.texi: DONT_DECLARE_SYS_SIGLIST: Remove docs.
        * xm-linux.h (DONT_DECLARE_SYS_SIGLIST): Delete definition.
        * xm-freebsd.h, xm-bsd386.h, xm-sysv4.h, xm-sol2.h: Likewise.
        * configure.in: Check for sys_siglist declaration.
        * configure, config.in: Rebuilt.

Mon Sep  1 08:04:07 1997  Joel Sherrill (joel@OARcorp.com)

        * i386/go32-rtems.h, i386/rtems.h, i960/rtems.h, 
        m68k/rtems.h, mips/rtems64.h, pa/rtems.h, rs6000/rtems.h,
        sparc/rtems.h (subtarget_switches): Added -mrtems as a switch.
        * i960/i960.h: Added SUBTARGET_SWITCHES macro.
        * rs6000/sysv4.h (extra_subtarget_switches): Added new
        macro EXTRA_SUBTARGET_SWITCHES.
        * configure.in (sh*-*-rtems*): New target.
        * sh/rtems.h: New file.
        * sh/sh.h: Added SUBTARGET_SWITCHES macro.
        * configure: Rebuilt.

Sat Aug 30 22:54:26 1997  Jim Wilson  <wilson@cygnus.com>

        * unroll.c (calculate_giv_inc): Handle increment with code PLUS.

Sat Aug 30 10:49:46 1997  David Edelsohn  <edelsohn@mhpcc.edu>

        * rs6000.md: Make DF fused-add operations pay attention to
        -mno-fused-add.

Fri Aug 29 19:19:54 1997  Jim Wilson  <wilson@cygnus.com>

        * i386/xm-sysv4.h (DONT_DECLARE_SYS_SIGLIST): Define.

Fri Aug 29 16:13:51 1997  Jeffrey A Law  (law@cygnus.com)

        * pa.md (reload_peepholes): Make sure operand is a REG before
        examining REGNO.  Allow general registers too.

Fri Aug 29 11:42:04 1997  Jim Wilson  <wilson@cygnus.com>

        * varasm.c (mark_constants): Don't look inside CONST_DOUBLEs.

Fri Aug 29 09:33:20 1997  Philipp Thomas  (kthomas@lxi165.gwdg.de)

        * dwarf2out.c (build_abbrev_table): Use xrealloc, not xmalloc
        to reallocate abbrev_die_table.

Thu Aug 28 15:14:46 1997  Jim Wilson  <wilson@cygnus.com>

        * m68k/m68k.md (iorsi_zexthi_ashl16): Disable.

1997-08-27  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

        * Makefile.in (config.status): Depend on version.c

        * expr.h (insn_gen_function): Reenable prototype.

        * expr.c (move_by_pieces_1, clear_by_pieces_1): Fix prototype of
        first parameter.

Thu Aug 28 13:01:43 1997  Jim Wilson  <wilson@cygnus.com>

        * i386.c (ix86_expand_epilogue): Emit blockage instruction when pic.

Thu Aug 28 07:03:15 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Bump for latest snapshot.

        * bc-optab.c: Conditionally include stdlib.h.
        (free): Provide a declaration if NEED_DECLARATION_FREE.
        * tree.c (free): Provide a declaration if NEED_DECLARATION_FREE.
        * rtl.h (free): Remove declaration.
        * tree.h (free): Remvoe declaration.

        * configure: Rebuilt.

Wed Aug 27 21:32:20 1997  Jeffrey A Law  (law@cygnus.com)

        * flags.h (flag_move_all_movables): Declare.
        (flag_reduce_all_givs): Likewise.
        * loop.c (move_movables): Handle flag_move_all_movables.
        (strength_reduce): Handle flag_reduce_all_givs.
        * toplev.c (flag_move_all_movables): Define.
        (flag_reduce_all_givs): Likewise.
        (f_options): Add -fmove-all-movables and -freduce-all-givs.
        * invoke.texi: Document new options, including alias stuff that
        wasn't included last time.

Wed Aug 27 18:08:51 1997  Bob Manson  (manson@cygnus.com)

        * t-h8300: Use TARGET_LIBGCC2_CFLAGS instead of LIBGCC2_CFLAGS.
        * t-mn10200: Ditto.
        * t-vxsparc: Ditto.
        * t-vxworks68: Ditto.
        * t-vxworks960: Ditto.
        * t-vx29k: Ditto.

Wed Aug 27 16:35:29 1997  Richard Henderson  <rth@cygnus.com>

        * alpha/xm-alpha.h (alloca): Define alloca to builtin_alloca for GNUC
        if not already defined, and USE_C_ALLOCA not defined.

Wed Aug 27 16:08:43 1997  Jim Wilson  <wilson@cygnus.com>

        * config.guess: Replace with script that uses ../config.guess.

        * config/alpha/elf.h (DEFAULT_VTABLE_THUNKS): New. Defined as 1
        if USE_GNULIBC_1 is not defined.

Wed Aug 27 15:49:12 1997  Richard Henderson  <rth@cygnus.com>

        * alpha/elf.h (LINK_SPEC): Conditionalize on USE_GNULIBC_1.
        * config.guess: Recognize alpha-linux-gnulibc1.
        * configure.in (alpha-*-linux-gnulibc1): New target.
        (alpha-*-linux-gnu*): Don't build crtbegin/end.

Wed Aug 27 11:52:58 1997  Jim Wilson  <wilson@cygnus.com>

        * m68k.md (iorsi3_internal): Readd ! TARGET_5200 check lost in
        last change.

Wed Aug 27 01:56:18 1997  Doug Evans  <dje@seba.cygnus.com>

        * loop.c (combine_movables): Earlier insns don't match later ones.

Wed Aug 27 01:24:25 1997  H.J. Lu   (hjl@gnu.ai.mit.edu)

        * config/linux.h (CC1_SPEC): Define it only if not defined.

        * config/m68k/linux.h (CC1_SPEC): Undefine it before include
        <linux.h>

        * config/linux.h (DEFAULT_VTABLE_THUNKS): New. Defined as 1 if
        USE_GNULIBC_1 is not defined.

        * config/rs6000/linux.h (DEFAULT_VTABLE_THUNKS): New.  Defined as 1.

        * config/sparc/linux.h (DEFAULT_VTABLE_THUNKS): New. Defined
        as 1 if USE_GNULIBC_1 is not defined.

Wed Aug 27 00:49:14 1997  Jeffrey A Law  (law@cygnus.com)

        * reorg.c (dbr_schedule): Allow current_function_return_rtx
        to be something other than a REG.
        * function.c (expand_function_end): Fix current_function_return_rtx
        if it was a pseudo.

        * t-freebsd (USER_H): Include EXTRA_HEADERS and LANG_EXTRA_HEADERS.
        * x-netbsd: Likewise
        * x-dgux (USER_H): Include EXTRA_HEADERS and LANG_EXTRA_HEADERS
        (INSTALL_HEADERS): Delete.
        * x-dguxbcs: Likewise.
        * x-hp3bsd44: Likewise
        * x-pa: Likewise.

Wed Aug 27 00:30:00 1997  Bernd Schmidt  <crux@pool.informatik.rwth-aachen.de>

        * i386.md (pop): pop increments the stack pointer.
        (prologue_set_stack_ptr): New pattern.
        * i386.c (ix86_expand_prologue): Use prologue_set_stack_ptr
        instead of subsi3.

Tue Aug 26 18:50:32 1997  Jim Wilson  <wilson@cygnus.com>

        * reload.c (find_reloads, case '0'): Reject matching a non-offsettable
        address where an offsettable address is required.

Tue Aug 26 17:54:56 1997  Michael P. Hayes  (michaelh@ongaonga.chch.cri.nz>

        * loop.c (check_final_value): Don't miss a biv increment in a
        parallel.

Tue Aug 26 12:03:49 1997  Jim Wilson  (wilson@cygnus.com)

        * dwarfout.c (dwarfout_file_scope_decl, case TYPE_DECL): Check
        TYPE_DECL_IS_STUB instead of DECL_NAME.

Mon Aug 25 23:27:10 1997  H.J. Lu  (hjl@gnu.ai.mit.edu)

        * objc/Make-lang.in ($(OBJC_O)): Also depend on cc1obj.

Mon Aug 25 23:27:10 1997  Jim Meyering <meyering@eng.ascend.com>

        * objc/Make-lang.in ($(OBJC_O)): Also depend on $(GCC_PASSES).

Mon Aug 25 13:12:24 1997  Jeffrey A Law  (law@cygnus.com)

        * haifa-sched.c (find_pre_sched_live): Remove #if 0 code.
        (find_post_sched_live): Likewise.

        * haifa-sched.c (schedule_block): Remove old code to get arguments
        from hard regs into pseudos early.

Mon Aug 25 08:55:00 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Bump for new snapshot.

        * local-alloc.c (update_equiv_regs): All the target to reject
        promotion of some REG_EQUAL to REG_EQUIV notes.
        * pa.h (DONT_RECORD_EQUIVALENCE): Define.

        * pa.c (secondary_reload_class): (mem (mem ... )) does not need
        secondary reloads.

        * pa.c (hppa_builtin_saveregs): Emit a blockage insn after the
        store of the argument registers.

Mon Aug 25 08:39:02 1997  Craig Burley  (burley@gnu.ai.mit.edu)

        * fold-const.c (multiple_of_p): New function.
        (fold): Turn some cases of *_DIV_EXPR into EXACT_DIV_EXPR.

Mon Aug 25 01:47:41 1997  Jeffrey A Law  (law@cygnus.com)

        * expr.h (insn_gen_function): Temporarily remove prototype.

Sun Aug 24 17:22:21 1997  Jim Wilson  <wilson@cygnus.com>

        * Makefile.in (install-info): Don't cd into srcdir.  Add srcdir to
        filenames.  Use sed to extract base filename for install.

Sat Aug 23 18:19:40 1997  John F. Carr  <jfc@mit.edu>

        * unroll.c (find_splittable_givs): Only share if two givs have the
        same add and multiply values.

Sat Aug 23 14:36:27 1997  Jim Wilson  <wilson@cygnus.com>

        * m68k/next.h (GO_IF_INDEXABLE_BASE): Fix typo in undef.
        * m68k/m68kemb.h (LIB_SPEC): Add missing comment end before it.

Sat Aug 23 00:18:22 1997  Jeffrey A Law  (law@cygnus.com)

        * pa.c (pa_reorg): Always put begin_brtab and end_brtab insns
        around branch tables.
        * pa.md (begin_brtab, end_brtab): Only emit the .begin_brtab
        and .end_brtab directives if TARGET_GAS.

Fri Aug 22 14:05:55 1997  Jim Wilson  <wilson@cygnus.com>

        * alias.c (true_dependence): Pass x_addr not x to varies.

        * acconfig.h (NEED_DECLARATION_CALLOC): Add.
        * configure.in: Add GCC_NEED_DECLARATION call for calloc.
        * rs6000/xm-rs6000.h (malloc, realloc, calloc, free): Delete
        declarations.
        * config.in, configure: Regenerate.

Thu Aug 21 23:52:16 1997  John F. Carr  <jfc@mit.edu>

        * alias.c (find_base_value): Improve handling of PLUS, MINUS, and
        LO_SUM.
        (record_set): Handle LO_SUM like PLUS.
        (init_alias_analysis): When following chains of base addresses,
        do not stop on reaching a hard register.

Thu Aug 21 20:17:37 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Bump for new snapshot.

Thu Aug 21 17:28:00 1997  Jim Wilson  <wilson@cygnus.com>

        * alpha.h (ARCH_ASM_FILE_START): Define.
        (ASM_FILE_START): Use ARCH_ASM_FILE_START.
        * osf12.h, osf2or3.h (ARCH_ASM_FILE_START): Redefine to null string.

Thu Aug 21 10:22:19 1997  Jeffrey A Law  (law@cygnus.com)

        * Makefile.in (install-common): Put gcov comment at start of line.

Wed Aug 20 22:47:33 1997  Jeffrey A Law  (law@cygnus.com)

        * alias.c (init_alias_analysis): When simplifying the reg_base_value
        array, simplify entries for hard registers too.

Wed Aug 20 12:35:47 1997  Dave Love  <d.love@dl.ac.uk>

        * dwarf2.h (enum dwarf_call_frame_info): Remove trailing comma from
        list.

Wed Aug 20 11:58:33 1997  Jim Wilson  <wilson@cygnus.com>

        * stmt.c (start_cleanup_deferal, end_cleanup_deferal): Test
        block_stack before dereferencing it.

Wed Aug 20 11:57:11 1997  Michael Meissner  <meissner@cygnus.com>

        * rs6000.h (ISSUE_RATE): Define instead of MACHINE_issue_rate.

Tue Aug 19 17:10:56 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * cplus-dem.c: Add 'extern' to prepends_underscore.

Tue Aug 19 09:34:57 1997  Jeffrey A Law  (law@cygnus.com)

        * haifa-sched.c (ISSUE_RATE): Renamed from MACHINE_issue_rate.
        (get_issue_rate): Delete.
        * pa.h (ISSUE_RATE): Define.

        * configure.in: Turn on haifa by default for the PA.
        * configure: Rebuilt.
        * pa.c (override_options): Accept -mschedule=7200 option.
        (pa_adjust_cost): No longer need to scale costs for newer
        processors.
        * pa.h (enum processor_type): Add PROCESSOR_7200.
        * pa.md: Revamp scheduling parameters to work better with
        haifa.  Add scheduling parameters for the 7200.

        * haifa-sched.c (move_insn): Reemit notes for SCHED_GROUP_P
        insns too.
        (schedule_block): When adjusting basic_block_{head,end}, account
        for movement of SCHED_GROUP_P insns too.

        * haifa-sched.c (debug_dependencies): Fix thinko.

        * Makefile.in (EXPECT, RUNTEST, RUNTESTFLAGS): Define.
        (site.exp, check, check-g++, check-gcc): New targets.

        * haifa-sched.c: Make lots of variables static.

Tue Aug 19 07:18:34 1997  H.J. Lu  (hjl@gnu.ai.mit.edu)

        * expr.h, real.h: Finish prototyping.

Mon Aug 18 21:49:02 1997  Jim Wilson  <wilson@cygnus.com>

        * reload.c (find_reloads): Add code to convert RELOAD_FOR_OPADDR_ADDR
        reloads to RELOAD_FOR_OPERAND_ADDRESS reloads.
        * reload1.c: Undo bugfix from Aug 11.

Mon Aug 18 17:39:02 1997  Mike Meissner  <meissner@cygnus.com>

        * configure.in ({powerpc,rs6000}*-*-*, --with-cpu): Remove single
        quotes around the name.
        * configure: Regenerate.

Mon Aug 18 13:46:47 1997  Jim Wilson  <wilson@cygnus.com>

        * Makefile.in (stmp-multilib-sub): Fix typo in last change.

Thu Aug  7 10:33:13 1997  Manfred Hollstein  <manfred@s-direktnet.de>

        * Makefile.in (sub-makes): Pass the current value of LANGUAGES down
        to sub-makes to avoid building more passes than the user might have
        requested on the command line.

Sun Aug 17 15:42:17 1997  Dave Love  (d.love@dl.ac.uk)

        * configure.in: Expurgate `broken_install' (install is
        autoconfed).

        * configure.lang: Substitute autoconfed ${INSTALL} (not currently
        relevant).

Sat Aug 16 01:08:12 1997  Jeffrey A Law  (law@cygnus.com)

        * loop.c (is_power_of_2, is_conditional_branch): Delete unused
        functions and declarations.
        (analyze_loop_iterations): Use condjump_p.
        (insert_bct): Likewise.  Use exact_log2.
        
Fri Aug 15 23:48:32 1997  Jeffrey A Law  (law@cygnus.com)

        * haifa-sched.c (find_post_sched_live): Call FREE_REG_SET as needed.
        (schedule_region): Likewise.
        (schedule_insns): Likewise.

        * PROJECTS: Update with Haifa stuff.

Fri Aug 15 12:49:56 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Change the version string to look like:
        egcs-2.90.00 970814 (gcc2-970802 experimental).

        * loop.c (is_conditional_branch): Make definition match declaration.

        * gcc.c: Take out experimental snapshot warning message.

Fri Aug 15 13:43:39 1997  Michael Meissner  <meissner@cygnus.com>

        * haifa-sched.c (debug_dependencies): Use GET_NOTE_INSN_NAME to
        print out the names of the notes.  Print out the name of the insn
        that is not a note, and not an {,CALL_,JUMP_}INSN.

Wed Aug 13 17:32:38 1997  Jason Merrill  <jason@yorick.cygnus.com>

        * expr.c (expand_expr, case TARGET_EXPR): Call mark_addressable
        again for the slot after we give it RTL.

Wed Aug 13 01:03:37 1997  Doug Evans  <dje@canuck.cygnus.com>

        * configure.in (haifa configury): Fix typo.
        * configure: Regenerate.

Tue Aug 12 10:20:36 1997  Jeffrey A Law  (law@cygnus.com)

        * version.c: Bump version to "gcc-3.0.0 970802 experimental".

        * gcc.info*: Rebuilt.

        * COPYING.g77, README.g77: New files.
        * real.c (ereal_unto_float, ereal_unto_double): New functions.
        * real.h (ereal_unto_float, ereal_unto_double): Declare them.
        (REAL_VALUE_UNTO_TARGET_DOUBLE, REAL_VALUE_UNTO_TARGET_SINGLE): Define.

Mon Aug 11 14:50:55 1997  Jeffrey A Law  (law@cygnus.com)

        * Integrate Haifa instruction scheduler.
        * Makefile.in (ALL_CFLAGS): Add SCHED_CFLAGS.  Prefix all references
        to sched with $(SCHED_CFLAGS.
        * configure.in: Handle --enable-haifa.
        * configure: Rebuilt.
        * flags.h: Add new flags for haifa instruction scheduler.
        * genattrtab.c (expand_units): For haifa, don't subtract one
        when computing blockage.
        * toplev.h (flag_schedule_interblock): Haifa scheduler flag.
        (flag_schedule_speculative): Ditto.
        (flag_schedule_speculative_load): Ditto.
        (flag_schedule_speculative_load_dangerous): Ditto.
        (flag_schedule_reverse_before_reload): Ditto.
        (flag_schedule_reverse_after_reload): Ditto.
        (flag_branch_on_count_reg): Ditto.
        (f_options): Add Haifa switches.
        (main): Turn off some Haifa options if appropriate macro is
        defined.  Process Haifa switches.
        * unroll.c (iteration_info): No longer static, since Haifa
        scheduler uses it.
        (unroll_loop): Inform HAIFA scheduler about loop unrolling factor.
        * unroll.c (unroll_loop): Set loop_unroll_iter, loop_start_value.
        * loop.h (loop_unroll_factor, loop_number): Add HAIFA decls.
        * loop.h (loop_initial_value,loop_unroll_iter): New globals.
        * loop.c (loop_optimize): If HAIFA is defined, allocate additional
        storage for the Haifa scheduler.
        (mark_loop_jump): If HAIFA defined, set LABEL_OUTSIDE_LOOP_P and
        LABEL_NEXTREF.
        (strength_reduce): If HAIFA and HAVE_decrement_and_branch_on_count
        are defined, call analyze_loop_iterations and insert_bct to use
        countdown loops.
        (record_giv): Refine test for jumps out of loops if HAIFA is
        defined.
        (analyze_loop_iterations): New function to identify if we can use
        a countdown loop.
        (insert_bct): Insert countdown loop.
        (instrument_loop_bct): Low level code to insert countdown loop.
        (loop_number): Calculate UID of loop.
        (indirect_jump_in_function_p): Return true if an indirect jump is
        in the function.
        (is_power_of_2): Return true if value is a power of 2.
        (is_conditional_branch): Return true if insn is a conditional
        jump.
        (fix_bct_param): Process -fbct-{min,max}-N switches.
        (check_bct_param): Return true if loop should be instrumented.
        * loop.c (loop_initial_value,loop_unroll_iter): New globals.
        (loop_optimize): Initialize.
        (get_condition_for_loop): Ditto.
        * loop.c (strength_reduce): Inside of code that uses #ifdef
        HAVE_decrement_and_branch_on_count code, test it to make sure the
        condition is true.
        (instrument_loop_bct): Ditto.
        * haifa-sched.c: New file.
        

        * Integrate regmove pass.
        * Makefile.in (OBJS): Add regmove.o
        (regmove.o): Add dependencies.
        * flow.c (find_use_as_address): No longer static.
        * rtl.h (find_use_as_address): Declare.
        * toplev.c (regmove_dump, flag_regmove): Define.
        (f_options): Add -fregmove.
        (regmove_dump_file, regmove_time): Define.
        (fatal_insn): Close the regmove dump file.
        (compile_file): Initialize regmove_time; open/close the regmove dump
        file as needed.  Print regmove time as needed.
        (rest_of_compilation): Run regmove pass if requested, dump
        RTL after regmove if requested.
        (main): If -O2 or more, turn on regmove.  Handle dump switches.
        * regmove.c: New file.
        
Mon Aug 11 14:15:02 1997  Jeffrey A Law  (law@cygnus.com)

        * Integrate tlink patch from jason@cygnus.com
        * gcc.c (SWITCH_TAKES_ARG): Add 'V', 'B' and 'b'.
        (process_command): Increment n_switches for them.  Don't discard
        their args.  Validate them.
        (main): Escape " marks when creating COLLECT_GCC_OPTIONS.
        From Rohan Lenard.
        (process_command): Set include_prefixes from COMPILER_PATH.
        (main): Set COLLECT_GCC_OPTIONS sooner.
        * confiugre.in: Link ../ld/ld.new to collect-ld rather than real-ld.
        * tlink.c, hash.c, hash.h: New files.
        * Makefile.in (USE_COLLECT2): Always use collect2.
        (collect2): Depend on and link in hash.o and tlink.o.
        (tlink.o, hash.o): Add dependencies.

Mon Aug 11 10:04:49 1997  Jeffrey A Law  (law@cygnus.com)

        * Integrate alias analysis changes from jfc@mit.edu
        * Makefile.in (OBJS): Add alias.o
        (alias.o): Add dependencies.
        * alias.c: New file.
        * sched.c: Remove alias analysis code.  It lives in alias.c now.
        (sched_analyze_2): Add new arguments to true_dependence.
        (schedule_insns): Always call init_alias_analysis.
        * calls.c (expand_call): Note calls to malloc, calloc, and realloc;
        mark return value from such functions as a pointer and keep track of
        them for alias analysis.  If a return value from a function is a
        pointer, mark it as such.
        * combine.c (distribute_notes): Handle REG_NOALIAS.
        * cse.c (struct write_data): Delete.  No longer needed.
        (invalidate): Don't call set_nonvarying_address_components anymore.
        Use true_dependence to decide if an entry should be removed from
        the hash table.
        (invalidate_memory): Remove WRITES argument, simplify appropriately.
        Fix all callers.
        (note_mem_written): Similarly for WRITE_PTR argument.
        (invalidate_from_clobbers): Similarly for W argument.
        (invalidate_for_call): Remove memory elements from the hash table.
        (refers_to_mem_p, cse_rtx_addr_varies_p): Deleted.
        (cse_rtx_varies_p): New function.  Derived from old
        cse_rtx_addr_varies_p.
        (cse_insn): Remove WRITES_MEMORY and INIT variables and all references.
        Don't call note_mem_written anymore.  Stack pushes invalidate the stack
        pointer if PUSH_ROUNDING is defined.  No longer need to call
        cse_rtx_addr_varies_p to decide if a MEM should be invalidated.
        (skipped_writes_memory): Remove variable.
        (invalidate_skipped_set): Simplify and wewrite to use invalidate_memory.
        (invalidate_skipped_block): Simplify for new alias analysis code.
        (cse_set_around_loop): Likewise.
        (cse_main): Call init_alias_analysis.
        * flags.h (flag_alias_check, flag_argument_noalias): Declare.
        * toplev.c (flag_alias_check, flag_argument_noalias): Define.
        (f_options): Add new alias checking arguments.
        (main): Set flag_alias_check when optimizing.
        * local_alloc (validate_equiv_mem_from_store): Add new arguments
        to true_dependence.
        (memref_referenced_p): Likewise.
        * loop.c (NUM_STORES): Increase to 30.
        (prescan_loop): Only non-constant calls set unknown_address_altered.
        (invariant_p): Add new arguments to true_dependence.
        (record_giv): Initialize unrolled and shared fields.
        (emit_iv_add_mult): Call record_base_value as needed.
        * loop.h (struct induction): Add unrolled and shared fields.
        * unroll.c  (unroll_loop): Call record_base_value as needed.
        (copy_loop_body): Likewise.
        (final_biv_value): Likewise.
        (final_giv_value): Likewise.
        (find_splittable_regs): Likewise.  Only create one new pseudo
        if we have multiple address GIVs that were combined with the same
        dst_reg GIV.  Note when a new register is created due to unrolling.
        * rtl.c (reg_note_name): Add REG_NOALIAS.
        * rtl.h (enum reg_note): Similarly.
        (rtx_varies_p, may_trap_p, side_effects_p): Declare.
        (volatile_refs_p, volatile_insn_p, remove_note): Likewise.
        (note_stores, refers_to_regno_p, reg_overlap_mentioned_p): Likewise.
        (true_dependence, read_dependence, anti_dependence): Likewise.
        (output_dependence, init_alias_analysis, end_alias_analysis): Likewise.
        (mark_user_reg, mark_reg_pointer): Likewise.


        * Integrate reload bugfix from Wilon which enables the PA port
        to bootstrap again.
        * reload1.c (reload): Sum needs for both OPADDR_ADDR and and
        OPERAND_ADDRESS when computing how many registers an insn needs.
        (reload_reg_free_p): OPADDR_ADDR and OPERAND_ADDRESS reloads do
        conflict.
        (reload_reg_free_before_p): Treat OPERAND_ADDRESS reloads just like
        OPADDR_ADDR reload.
        (reload_reg_reaches_end_p): For RELOAD_FOR_OPADDR_ADDR insns, registers
        in reload_reg_use_in_op_addr do not reach the end.
        do not reach the end.
        (reloads_conflict): RELOAD_FOR_OPADDR_ADDR conflicts with
        RELOAD_FOR_OPERAND_ADDRESS.

Sun Aug 10 12:00:20 1997  Jeffrey A Law  (law@cygnus.com)

        * egcs project officially starts.