We fold memcpy to direct assignments based on types of the pointed-to types of its arguments. This is completely wrong for C++ and wrong for C if neither source nor destination has a declared type. memcpy transfers the dynamic type of objects. int main() { int i = 0; float f = 1.0; int *p = (int *)&f; __builtin_memcpy (&i, p, 4); if (*(float *)&i != 1.0) __builtin_abort (); return 0; } we already fold the memcpy to i = *(int * {ref-all})p; but that creates an access to i via an lvalue of type int. It needs to be all done via a ref-all access, thus *(<type-large-enough> * {ref-all})&i = *(<type-large-enough> * {ref-all})p; In C the testcase would invoke undefined behavior as i has a declared type but it is valid C++. The issue arises fixing std::tr1::functional::swap wrt its accesses to _Any_data. void swap(function& __x) { _Any_data __old_functor; __builtin_memcpy (&__old_functor, &_M_functor, sizeof (_Any_data)); __builtin_memcpy (&_M_functor, &__x._M_functor, sizeof (_Any_data)); __builtin_memcpy (&__x._M_functor, &__old_functor, sizeof (_Any_data)); _Manager_type __old_manager = _M_manager; is folded back to __old_functor = D.13016.D.8817._M_functor; D.13016.D.8817._M_functor = f.D.8817._M_functor; f.D.8817._M_functor = __old_functor; which wasn't the point of the whole excercise.
Mine.
/* With memcpy, it is possible to bypass aliasing rules, so without this check i.e. execute/20060930-2.c would be misoptimized, because it use conflicting alias set to hold argument for the memcpy call. This check is probably unnecessary with -fno-strict-aliasing. Similarly for destvar. See also PR29286. */ else if (!var_decl_component_p (srcvar)) srcvar = NULL_TREE; this is ok for C but not enough for C++. For C++ we need to unconditionally zero srcvar with only the memcpy statement to look at. A propagation pass might be able to figure out the dynamic type of the memory we are copying. Might fit well into a pass to propagate alignment information.
Another possible way is to have a block-copy operation in gimple that would do the copy with alias-set zero and avoids the address-taking.
Subject: Bug 42834 Author: rguenth Date: Mon Jun 21 11:18:26 2010 New Revision: 161067 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=161067 Log: 2010-06-21 Richard Guenther <rguenther@suse.de> PR middle-end/42834 * builtins.c (fold_builtin_memory_op): Use ref-all types for all memcpy foldings. * expr.c (store_expr): Handle MEM_REFs from STRING_CSTs. testsuite/ * c-c++-common/torture/pr42834.c: New testcase. * gcc.dg/tree-prof/stringop-1.c: Adjust. * gfortran.dg/array_memcpy_3.f90: Likewise. * gfortran.dg/array_memcpy_4.f90: Likewise. Added: branches/mem-ref2/gcc/testsuite/c-c++-common/torture/pr42834.c Modified: branches/mem-ref2/gcc/ChangeLog.mem-ref2 branches/mem-ref2/gcc/builtins.c branches/mem-ref2/gcc/expr.c branches/mem-ref2/gcc/testsuite/gcc.dg/tree-prof/stringop-1.c branches/mem-ref2/gcc/testsuite/gfortran.dg/array_memcpy_3.f90 branches/mem-ref2/gcc/testsuite/gfortran.dg/array_memcpy_4.f90
Subject: Bug 42834 Author: rguenth Date: Thu Jul 1 08:49:19 2010 New Revision: 161655 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=161655 Log: 2010-07-01 Richard Guenther <rguenther@suse.de> PR middle-end/42834 PR middle-end/44468 * doc/gimple.texi (is_gimple_mem_ref_addr): Document. * doc/generic.texi (References to storage): Document MEM_REF. * tree-pretty-print.c (dump_generic_node): Handle MEM_REF. (print_call_name): Likewise. * tree.c (recompute_tree_invariant_for_addr_expr): Handle MEM_REF. (build_simple_mem_ref_loc): New function. (mem_ref_offset): Likewise. * tree.h (build_simple_mem_ref_loc): Declare. (build_simple_mem_ref): Define. (mem_ref_offset): Declare. * fold-const.c: Include tree-flow.h. (operand_equal_p): Handle MEM_REF. (build_fold_addr_expr_with_type_loc): Likewise. (fold_comparison): Likewise. (fold_unary_loc): Fold VIEW_CONVERT_EXPR <T1, MEM_REF <T2, ...>> to MEM_REF <T1, ...>. (fold_binary_loc): Fold MEM[&MEM[p, CST1], CST2] to MEM[p, CST1 + CST2], fold MEM[&a.b, CST2] to MEM[&a, offsetof (a, b) + CST2]. * tree-ssa-alias.c (ptr_deref_may_alias_decl_p): Handle MEM_REF. (ptr_deref_may_alias_ref_p_1): Likewise. (ao_ref_base_alias_set): Properly differentiate base object for offset and TBAA. (ao_ref_init_from_ptr_and_size): Use MEM_REF. (indirect_ref_may_alias_decl_p): Handle MEM_REFs properly. (indirect_refs_may_alias_p): Likewise. (refs_may_alias_p_1): Likewise. Remove pointer SSA name def chasing code. (ref_maybe_used_by_call_p_1): Handle MEM_REF. (call_may_clobber_ref_p_1): Likewise. * dwarf2out.c (loc_list_from_tree): Handle MEM_REF. * expr.c (expand_assignment): Handle MEM_REF. (store_expr): Handle MEM_REFs from STRING_CSTs. (store_field): If expanding a MEM_REF of a non-addressable decl use bitfield operations. (get_inner_reference): Handle MEM_REF. (expand_expr_addr_expr_1): Likewise. (expand_expr_real_1): Likewise. * tree-eh.c (tree_could_trap_p): Handle MEM_REF. * alias.c (ao_ref_from_mem): Handle MEM_REF. (get_alias_set): Likewise. Properly handle VIEW_CONVERT_EXPRs. * tree-data-ref.c (dr_analyze_innermost): Handle MEM_REF. (dr_analyze_indices): Likewise. (dr_analyze_alias): Likewise. (object_address_invariant_in_loop_p): Likewise. * gimplify.c (mark_addressable): Handle MEM_REF. (gimplify_cond_expr): Build MEM_REFs. (gimplify_modify_expr_to_memcpy): Likewise. (gimplify_init_ctor_preeval_1): Handle MEM_REF. (gimple_fold_indirect_ref): Adjust. (gimplify_expr): Handle MEM_REF. Gimplify INDIRECT_REF to MEM_REF. * tree.def (MEM_REF): New tree code. * tree-dfa.c: Include toplev.h. (get_ref_base_and_extent): Handle MEM_REF. (get_addr_base_and_unit_offset): New function. * emit-rtl.c (set_mem_attributes_minus_bitpos): Handle MEM_REF. * gimple-fold.c (may_propagate_address_into_dereference): Handle MEM_REF. (maybe_fold_offset_to_array_ref): Allow possibly out-of bounds accesses if the array has just one dimension. Remove always true parameter. Do not require type compatibility here. (maybe_fold_offset_to_component_ref): Remove. (maybe_fold_stmt_indirect): Remove. (maybe_fold_reference): Remove INDIRECT_REF handling. Fold back to non-MEM_REF. (maybe_fold_offset_to_address): Simplify. Deal with type mismatches here. (maybe_fold_reference): Likewise. (maybe_fold_stmt_addition): Likewise. Also handle &ARRAY + I in addition to &ARRAY[0] + I. (fold_gimple_assign): Handle ADDR_EXPR of MEM_REFs. (gimple_get_relevant_ref_binfo): Handle MEM_REF. * cfgexpand.c (expand_debug_expr): Handle MEM_REF. * tree-ssa.c (useless_type_conversion_p): Make most pointer conversions useless. (warn_uninitialized_var): Handle MEM_REF. (maybe_rewrite_mem_ref_base): New function. (execute_update_addresses_taken): Implement re-writing of MEM_REFs to SSA form. * tree-inline.c (remap_gimple_op_r): Handle MEM_REF, remove INDIRECT_REF handling. (copy_tree_body_r): Handle MEM_REF. * gimple.c (is_gimple_addressable): Adjust. (is_gimple_address): Likewise. (is_gimple_invariant_address): ADDR_EXPRs of MEM_REFs with invariant base are invariant. (is_gimple_min_lval): Adjust. (is_gimple_mem_ref_addr): New function. (get_base_address): Handle MEM_REF. (count_ptr_derefs): Likewise. (get_base_loadstore): Likewise. * gimple.h (is_gimple_mem_ref_addr): Declare. (gimple_call_fndecl): Handle invariant MEM_REF addresses. * tree-cfg.c (verify_address): New function, split out from ... (verify_expr): ... here. Use for verifying ADDR_EXPRs and the address operand of MEM_REFs. Verify MEM_REFs. Reject INDIRECT_REFs. (verify_types_in_gimple_min_lval): Handle MEM_REF. Disallow INDIRECT_REF. Allow conversions. (verify_types_in_gimple_reference): Verify VIEW_CONVERT_EXPR of a register does not change its size. (verify_types_in_gimple_reference): Verify MEM_REF. (verify_gimple_assign_single): Disallow INDIRECT_REF. Handle MEM_REF. * tree-ssa-operands.c (opf_non_addressable, opf_not_non_addressable): New. (mark_address_taken): Handle MEM_REF. (get_indirect_ref_operands): Pass through opf_not_non_addressable. (get_asm_expr_operands): Pass opf_not_non_addressable. (get_expr_operands): Handle opf_[not_]non_addressable. Handle MEM_REF. Remove INDIRECT_REF handling. * tree-vrp.c: (check_array_ref): Handle MEM_REF. (search_for_addr_array): Likewise. (check_array_bounds): Likewise. (vrp_stmt_computes_nonzero): Adjust for MEM_REF. * tree-ssa-loop-im.c (for_each_index): Handle MEM_REF. (ref_always_accessed_p): Likewise. (gen_lsm_tmp_name): Likewise. Handle ADDR_EXPR. * tree-complex.c (extract_component): Do not handle INDIRECT_REF. Handle MEM_REF. * cgraphbuild.c (mark_load): Properly check for NULL result from get_base_address. (mark_store): Likewise. * tree-ssa-loop-niter.c (array_at_struct_end_p): Handle MEM_REF. * tree-loop-distribution.c (generate_builtin): Exchange INDIRECT_REF handling for MEM_REF. * tree-scalar-evolution.c (follow_ssa_edge_expr): Handle &MEM[ptr + CST] similar to POINTER_PLUS_EXPR. * builtins.c (stabilize_va_list_loc): Use the function ABI valist type if we couldn't canonicalize the argument type. Always dereference with the canonical va-list type. (maybe_emit_free_warning): Handle MEM_REF. (fold_builtin_memory_op): Simplify and handle MEM_REFs in folding memmove to memcpy. * builtins.c (fold_builtin_memory_op): Use ref-all types for all memcpy foldings. * omp-low.c (build_receiver_ref): Adjust for MEM_REF. (build_outer_var_ref): Likewise. (scan_omp_1_op): Likewise. (lower_rec_input_clauses): Likewise. (lower_lastprivate_clauses): Likewise. (lower_reduction_clauses): Likewise. (lower_copyprivate_clauses): Likewise. (expand_omp_atomic_pipeline): Likewise. (expand_omp_atomic_mutex): Likewise. (create_task_copyfn): Likewise. * tree-ssa-sccvn.c (copy_reference_ops_from_ref): Handle MEM_REF. Remove old union trick. Initialize constant offsets. (ao_ref_init_from_vn_reference): Likewise. Do not handle INDIRECT_REF. Init base_alias_set properly. (vn_reference_lookup_3): Replace INDIRECT_REF handling with MEM_REF. (vn_reference_fold_indirect): Adjust for MEM_REFs. (valueize_refs): Fold MEM_REFs. Re-evaluate constant offset for ARRAY_REFs. (may_insert): Remove. (visit_reference_op_load): Do not test may_insert. (run_scc_vn): Remove parameter, do not fiddle with may_insert. * tree-ssa-sccvn.h (struct vn_reference_op_struct): Add a field to store the constant offset this op applies. (run_scc_vn): Adjust prototype. * cgraphunit.c (thunk_adjust): Adjust for MEM_REF. * tree-ssa-ccp.c (ccp_fold): Replace INDIRECT_REF folding with MEM_REF. Propagate &foo + CST as &MEM[&foo, CST]. Do not bother about volatile qualifiers on pointers. (fold_const_aggregate_ref): Handle MEM_REF, do not handle INDIRECT_REF. * tree-ssa-loop-ivopts.c * tree-ssa-loop-ivopts.c (determine_base_object): Adjust for MEM_REF. (strip_offset_1): Likewise. (find_interesting_uses_address): Replace INDIRECT_REF handling with MEM_REF handling. (get_computation_cost_at): Likewise. * ipa-pure-const.c (check_op): Handle MEM_REF. * tree-stdarg.c (check_all_va_list_escapes): Adjust for MEM_REF. * tree-ssa-sink.c (is_hidden_global_store): Handle MEM_REF and constants. * ipa-inline.c (likely_eliminated_by_inlining_p): Handle MEM_REF. * tree-parloops.c (take_address_of): Adjust for MEM_REF. (eliminate_local_variables_1): Likewise. (create_call_for_reduction_1): Likewise. (create_loads_for_reductions): Likewise. (create_loads_and_stores_for_name): Likewise. * matrix-reorg.c (may_flatten_matrices_1): Sanitize. (ssa_accessed_in_tree): Handle MEM_REF. (ssa_accessed_in_assign_rhs): Likewise. (update_type_size): Likewise. (analyze_accesses_for_call_stmt): Likewise. (analyze_accesses_for_assign_stmt): Likewise. (transform_access_sites): Likewise. (transform_allocation_sites): Likewise. * tree-affine.c (tree_to_aff_combination): Handle MEM_REF. * tree-vect-data-refs.c (vect_create_addr_base_for_vector_ref): Do not handle INDIRECT_REF. * tree-ssa-phiopt.c (add_or_mark_expr): Handle MEM_REF. (cond_store_replacement): Likewise. * tree-ssa-pre.c (create_component_ref_by_pieces_1): Handle MEM_REF, no not handle INDIRECT_REFs. (insert_into_preds_of_block): Properly initialize avail. (phi_translate_1): Fold MEM_REFs. Re-evaluate constant offset for ARRAY_REFs. Properly handle reference lookups that require a bit re-interpretation. (can_PRE_operation): Do not handle INDIRECT_REF. Handle MEM_REF. * tree-sra.c * tree-sra.c (build_access_from_expr_1): Handle MEM_REF. (build_ref_for_offset_1): Remove. (build_ref_for_offset): Build MEM_REFs. (gate_intra_sra): Disable for now. (sra_ipa_modify_expr): Handle MEM_REF. (ipa_early_sra_gate): Disable for now. * tree-sra.c (create_access): Swap INDIRECT_REF handling for MEM_REF handling. (disqualify_base_of_expr): Likewise. (ptr_parm_has_direct_uses): Swap INDIRECT_REF handling for MEM_REF handling. (sra_ipa_modify_expr): Remove INDIRECT_REF handling. Use mem_ref_offset. Remove bogus folding. (build_access_from_expr_1): Properly handle MEM_REF for non IPA-SRA. (make_fancy_name_1): Add support for MEM_REF. * tree-predcom.c (ref_at_iteration): Handle MEM_REFs. * tree-mudflap.c (mf_xform_derefs_1): Adjust for MEM_REF. * ipa-prop.c (compute_complex_assign_jump_func): Handle MEM_REF. (compute_complex_ancestor_jump_func): Likewise. (ipa_analyze_virtual_call_uses): Likewise. * tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Replace INDIRECT_REF folding with more generalized MEM_REF folding. (tree_ssa_forward_propagate_single_use_vars): Adjust accordingly. (forward_propagate_addr_into_variable_array_index): Also handle &ARRAY + I in addition to &ARRAY[0] + I. * tree-ssa-dce.c (ref_may_be_aliased): Handle MEM_REF. * tree-ssa-ter.c (find_replaceable_in_bb): Avoid TER if that creates assignments with overlap. * tree-nested.c (get_static_chain): Adjust for MEM_REF. (get_frame_field): Likewise. (get_nonlocal_debug_decl): Likewise. (convert_nonlocal_reference_op): Likewise. (struct nesting_info): Add mem_refs pointer-set. (create_nesting_tree): Allocate it. (convert_local_reference_op): Insert to be folded mem-refs. (fold_mem_refs): New function. (finalize_nesting_tree_1): Perform defered folding of mem-refs (free_nesting_tree): Free the pointer-set. * tree-vect-stmts.c (vectorizable_store): Adjust for MEM_REF. (vectorizable_load): Likewise. * tree-ssa-phiprop.c (phiprop_insert_phi): Adjust for MEM_REF. (propagate_with_phi): Likewise. * tree-object-size.c (addr_object_size): Handle MEM_REFs instead of INDIRECT_REFs. (compute_object_offset): Handle MEM_REF. (plus_stmt_object_size): Handle MEM_REF. (collect_object_sizes_for): Dispatch to plus_stmt_object_size for &MEM_REF. * tree-flow.h (get_addr_base_and_unit_offset): Declare. (symbol_marked_for_renaming): Likewise. * Makefile.in (tree-dfa.o): Add $(TOPLEV_H). (fold-const.o): Add $(TREE_FLOW_H). * tree-ssa-structalias.c (get_constraint_for_1): Handle MEM_REF. (find_func_clobbers): Likewise. * ipa-struct-reorg.c (decompose_indirect_ref_acc): Handle MEM_REF. (decompose_access): Likewise. (replace_field_acc): Likewise. (replace_field_access_stmt): Likewise. (insert_new_var_in_stmt): Likewise. (get_stmt_accesses): Likewise. (reorg_structs_drive): Disable. * config/i386/i386.c (ix86_va_start): Adjust for MEM_REF. (ix86_canonical_va_list_type): Likewise. cp/ * cp-gimplify.c (cp_gimplify_expr): Open-code the rhs predicate we are looking for, allow non-gimplified INDIRECT_REFs. testsuite/ * gcc.c-torture/execute/20100316-1.c: New testcase. * gcc.c-torture/execute/pr44468.c: Likewise. * gcc.c-torture/compile/20100609-1.c: Likewise. * gcc.dg/volatile2.c: Adjust. * gcc.dg/plugin/selfassign.c: Likewise. * gcc.dg/pr36902.c: Likewise. * gcc.dg/tree-ssa/foldaddr-2.c: Remove. * gcc.dg/tree-ssa/foldaddr-3.c: Likewise. * gcc.dg/tree-ssa/forwprop-8.c: Adjust. * gcc.dg/tree-ssa/pr17141-1.c: Likewise. * gcc.dg/tree-ssa/ssa-fre-13.c: Likewise. * gcc.dg/tree-ssa/ssa-fre-14.c: Likewise. * gcc.dg/tree-ssa/ssa-ccp-21.c: Likewise. * gcc.dg/tree-ssa/pta-ptrarith-1.c: Likewise. * gcc.dg/tree-ssa/20030807-7.c: Likewise. * gcc.dg/tree-ssa/forwprop-10.c: Likewise. * gcc.dg/tree-ssa/ssa-fre-1.c: Likewise. * gcc.dg/tree-ssa/pta-ptrarith-2.c: Likewise. * gcc.dg/tree-ssa/ssa-ccp-23.c: Likewise. * gcc.dg/tree-ssa/forwprop-1.c: Likewise. * gcc.dg/tree-ssa/forwprop-2.c: Likewise. * gcc.dg/tree-ssa/struct-aliasing-1.c: Likewise. * gcc.dg/tree-ssa/ssa-ccp-25.c: Likewise. * gcc.dg/tree-ssa/ssa-pre-26.c: Likewise. * gcc.dg/tree-ssa/struct-aliasing-2.c: Likewise. * gcc.dg/tree-ssa/ssa-ccp-26.c: Likewise. * gcc.dg/tree-ssa/ssa-sccvn-4.c: Likewise. * gcc.dg/tree-ssa/ssa-pre-7.c: Likewise. * gcc.dg/tree-ssa/forwprop-5.c: Likewise. * gcc.dg/struct/w_prof_two_strs.c: XFAIL. * gcc.dg/struct/wo_prof_escape_arg_to_local.c: Likewise. * gcc.dg/struct/wo_prof_global_var.c: Likewise. * gcc.dg/struct/wo_prof_malloc_size_var.c: Likewise. * gcc.dg/struct/w_prof_local_array.c: Likewise. * gcc.dg/struct/w_prof_single_str_global.c: Likewise. * gcc.dg/struct/wo_prof_escape_str_init.c: Likewise. * gcc.dg/struct/wo_prof_array_through_pointer.c: Likewise. * gcc.dg/struct/w_prof_global_array.c: Likewise. * gcc.dg/struct/wo_prof_array_field.c: Likewise. * gcc.dg/struct/wo_prof_single_str_local.c: Likewise. * gcc.dg/struct/w_prof_local_var.c: Likewise. * gcc.dg/struct/wo_prof_two_strs.c: Likewise. * gcc.dg/struct/wo_prof_empty_str.c: Likewise. * gcc.dg/struct/wo_prof_local_array.c: Likewise. * gcc.dg/struct/w_prof_global_var.c: Likewise. * gcc.dg/struct/wo_prof_single_str_global.c: Likewise. * gcc.dg/struct/wo_prof_escape_substr_value.c: Likewise. * gcc.dg/struct/wo_prof_global_array.c: Likewise. * gcc.dg/struct/wo_prof_escape_return.c: Likewise. * gcc.dg/struct/wo_prof_escape_substr_array.c: Likewise. * gcc.dg/struct/wo_prof_double_malloc.c: Likewise. * gcc.dg/struct/w_ratio_cold_str.c: Likewise. * gcc.dg/struct/wo_prof_escape_substr_pointer.c: Likewise. * gcc.dg/struct/wo_prof_local_var.c: Likewise. * gcc.dg/tree-prof/stringop-1.c: Adjust. * g++.dg/tree-ssa/pr31146.C: Likewise. * g++.dg/tree-ssa/copyprop-1.C: Likewise. * g++.dg/tree-ssa/pr33604.C: Likewise. * g++.dg/plugin/selfassign.c: Likewise. * gfortran.dg/array_memcpy_3.f90: Likewise. * gfortran.dg/array_memcpy_4.f90: Likewise. * c-c++-common/torture/pr42834.c: New testcase. Added: trunk/gcc/testsuite/c-c++-common/torture/pr42834.c - copied unchanged from r161654, branches/mem-ref2/gcc/testsuite/c-c++-common/torture/pr42834.c trunk/gcc/testsuite/gcc.c-torture/compile/20100609-1.c - copied unchanged from r161654, branches/mem-ref2/gcc/testsuite/gcc.c-torture/compile/20100609-1.c trunk/gcc/testsuite/gcc.c-torture/execute/20100316-1.c - copied unchanged from r161654, branches/mem-ref2/gcc/testsuite/gcc.c-torture/execute/20100316-1.c trunk/gcc/testsuite/gcc.c-torture/execute/pr44468.c - copied unchanged from r161654, branches/mem-ref2/gcc/testsuite/gcc.c-torture/execute/pr44468.c Removed: trunk/gcc/testsuite/gcc.dg/tree-ssa/foldaddr-2.c trunk/gcc/testsuite/gcc.dg/tree-ssa/foldaddr-3.c Modified: trunk/gcc/ChangeLog trunk/gcc/Makefile.in trunk/gcc/alias.c trunk/gcc/builtins.c trunk/gcc/c-family/c-ada-spec.c (props changed) trunk/gcc/c-family/c-ada-spec.h (props changed) trunk/gcc/c-family/c-common.c (props changed) trunk/gcc/c-family/c-common.def (props changed) trunk/gcc/c-family/c-common.h (props changed) trunk/gcc/c-family/c-cppbuiltin.c (props changed) trunk/gcc/c-family/c-dump.c (props changed) trunk/gcc/c-family/c-format.c (props changed) trunk/gcc/c-family/c-format.h (props changed) trunk/gcc/c-family/c-gimplify.c (props changed) trunk/gcc/c-family/c-lex.c (props changed) trunk/gcc/c-family/c-omp.c (props changed) trunk/gcc/c-family/c-opts.c (props changed) trunk/gcc/c-family/c-pch.c (props changed) trunk/gcc/c-family/c-ppoutput.c (props changed) trunk/gcc/c-family/c-pragma.c (props changed) trunk/gcc/c-family/c-pragma.h (props changed) trunk/gcc/c-family/c-pretty-print.c (props changed) trunk/gcc/c-family/c-pretty-print.h (props changed) trunk/gcc/c-family/c-semantics.c (props changed) trunk/gcc/c-family/c.opt (props changed) trunk/gcc/c-family/stub-objc.c (props changed) trunk/gcc/cfgexpand.c trunk/gcc/cgraphbuild.c trunk/gcc/cgraphunit.c trunk/gcc/config/alpha/alpha.c trunk/gcc/config/i386/i386.c trunk/gcc/config/rs6000/rs6000.c trunk/gcc/config/sh/sh.c trunk/gcc/config/spu/spu.c trunk/gcc/cp/ChangeLog trunk/gcc/cp/cp-gimplify.c trunk/gcc/doc/generic.texi trunk/gcc/doc/gimple.texi trunk/gcc/dwarf2out.c trunk/gcc/emit-rtl.c trunk/gcc/expr.c trunk/gcc/fold-const.c trunk/gcc/gimple-fold.c trunk/gcc/gimple.c trunk/gcc/gimple.h trunk/gcc/gimplify.c trunk/gcc/ipa-inline.c trunk/gcc/ipa-prop.c trunk/gcc/ipa-pure-const.c trunk/gcc/ipa-struct-reorg.c trunk/gcc/matrix-reorg.c trunk/gcc/omp-low.c trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/c-c++-common/Wint-to-pointer-cast-1.c (props changed) trunk/gcc/testsuite/c-c++-common/Wint-to-pointer-cast-2.c (props changed) trunk/gcc/testsuite/c-c++-common/Wint-to-pointer-cast-3.c (props changed) trunk/gcc/testsuite/c-c++-common/cpp/normalize-3.c (props changed) trunk/gcc/testsuite/c-c++-common/cpp/warning-directive-1.c (props changed) trunk/gcc/testsuite/c-c++-common/cpp/warning-directive-2.c (props changed) trunk/gcc/testsuite/c-c++-common/cpp/warning-directive-3.c (props changed) trunk/gcc/testsuite/c-c++-common/cpp/warning-directive-4.c (props changed) trunk/gcc/testsuite/g++.dg/plugin/selfassign.c trunk/gcc/testsuite/g++.dg/tree-ssa/copyprop-1.C trunk/gcc/testsuite/g++.dg/tree-ssa/pr31146.C trunk/gcc/testsuite/g++.dg/tree-ssa/pr33604.C trunk/gcc/testsuite/g++.dg/warn/Wconversion-null-2.C (props changed) trunk/gcc/testsuite/gcc.dg/plugin/selfassign.c trunk/gcc/testsuite/gcc.dg/pr36902.c trunk/gcc/testsuite/gcc.dg/struct/w_prof_global_array.c trunk/gcc/testsuite/gcc.dg/struct/w_prof_global_var.c trunk/gcc/testsuite/gcc.dg/struct/w_prof_local_array.c trunk/gcc/testsuite/gcc.dg/struct/w_prof_local_var.c trunk/gcc/testsuite/gcc.dg/struct/w_prof_single_str_global.c trunk/gcc/testsuite/gcc.dg/struct/w_prof_two_strs.c trunk/gcc/testsuite/gcc.dg/struct/w_ratio_cold_str.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_array_field.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_array_through_pointer.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_double_malloc.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_empty_str.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_escape_arg_to_local.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_escape_return.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_escape_str_init.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_escape_substr_array.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_escape_substr_pointer.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_escape_substr_value.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_global_array.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_global_var.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_local_array.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_local_var.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_malloc_size_var.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_single_str_global.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_single_str_local.c trunk/gcc/testsuite/gcc.dg/struct/wo_prof_two_strs.c trunk/gcc/testsuite/gcc.dg/tree-prof/stringop-1.c trunk/gcc/testsuite/gcc.dg/tree-ssa/20030807-7.c trunk/gcc/testsuite/gcc.dg/tree-ssa/forwprop-1.c trunk/gcc/testsuite/gcc.dg/tree-ssa/forwprop-10.c trunk/gcc/testsuite/gcc.dg/tree-ssa/forwprop-2.c trunk/gcc/testsuite/gcc.dg/tree-ssa/forwprop-5.c trunk/gcc/testsuite/gcc.dg/tree-ssa/forwprop-8.c trunk/gcc/testsuite/gcc.dg/tree-ssa/loadpre6.c trunk/gcc/testsuite/gcc.dg/tree-ssa/pr17141-1.c trunk/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-1.c trunk/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-2.c trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-21.c trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-23.c trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-25.c trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-26.c trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-1.c trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-13.c trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-14.c trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-26.c trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-7.c trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-sccvn-4.c trunk/gcc/testsuite/gcc.dg/tree-ssa/struct-aliasing-1.c trunk/gcc/testsuite/gcc.dg/tree-ssa/struct-aliasing-2.c trunk/gcc/testsuite/gcc.dg/volatile2.c trunk/gcc/testsuite/gfortran.dg/array_memcpy_3.f90 trunk/gcc/testsuite/gfortran.dg/array_memcpy_4.f90 trunk/gcc/tree-affine.c trunk/gcc/tree-cfg.c trunk/gcc/tree-complex.c trunk/gcc/tree-data-ref.c trunk/gcc/tree-dfa.c trunk/gcc/tree-eh.c trunk/gcc/tree-flow.h trunk/gcc/tree-inline.c trunk/gcc/tree-into-ssa.c trunk/gcc/tree-loop-distribution.c trunk/gcc/tree-mudflap.c trunk/gcc/tree-nested.c trunk/gcc/tree-object-size.c trunk/gcc/tree-parloops.c trunk/gcc/tree-predcom.c trunk/gcc/tree-pretty-print.c trunk/gcc/tree-scalar-evolution.c trunk/gcc/tree-sra.c trunk/gcc/tree-ssa-alias.c trunk/gcc/tree-ssa-ccp.c trunk/gcc/tree-ssa-dce.c trunk/gcc/tree-ssa-forwprop.c trunk/gcc/tree-ssa-loop-im.c trunk/gcc/tree-ssa-loop-ivopts.c trunk/gcc/tree-ssa-loop-niter.c trunk/gcc/tree-ssa-operands.c trunk/gcc/tree-ssa-phiopt.c trunk/gcc/tree-ssa-phiprop.c trunk/gcc/tree-ssa-pre.c trunk/gcc/tree-ssa-sccvn.c trunk/gcc/tree-ssa-sccvn.h trunk/gcc/tree-ssa-sink.c trunk/gcc/tree-ssa-structalias.c trunk/gcc/tree-ssa-ter.c trunk/gcc/tree-ssa.c trunk/gcc/tree-stdarg.c trunk/gcc/tree-vect-data-refs.c trunk/gcc/tree-vect-stmts.c trunk/gcc/tree-vrp.c trunk/gcc/tree.c trunk/gcc/tree.def trunk/gcc/tree.h Propchange: trunk/gcc/c-family/c-ada-spec.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-ada-spec.h ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-common.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-common.def ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-common.h ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-cppbuiltin.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-dump.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-format.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-format.h ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-gimplify.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-lex.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-omp.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-opts.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-pch.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-ppoutput.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-pragma.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-pragma.h ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-pretty-print.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-pretty-print.h ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c-semantics.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/c.opt ('svn:mergeinfo' removed) Propchange: trunk/gcc/c-family/stub-objc.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/testsuite/c-c++-common/Wint-to-pointer-cast-1.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/testsuite/c-c++-common/Wint-to-pointer-cast-2.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/testsuite/c-c++-common/Wint-to-pointer-cast-3.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/testsuite/c-c++-common/cpp/normalize-3.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/testsuite/c-c++-common/cpp/warning-directive-1.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/testsuite/c-c++-common/cpp/warning-directive-2.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/testsuite/c-c++-common/cpp/warning-directive-3.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/testsuite/c-c++-common/cpp/warning-directive-4.c ('svn:mergeinfo' removed) Propchange: trunk/gcc/testsuite/g++.dg/warn/Wconversion-null-2.C ('svn:mergeinfo' removed)
Fixed for 4.6. Measures are in place to avoid the situation on the branches.
*** Bug 45883 has been marked as a duplicate of this bug. ***