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| author | Richard Biener <rguenther@suse.de> | 2013-09-24 11:04:04 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2013-09-24 11:04:04 +0000 |
| commit | f40333afeb570012ed42439cb9ce3c7aaa63b916 (patch) | |
| tree | 648deb8197d0c5862100744de7dc74e36afb91ec /gcc/alias.h | |
| parent | 583e8bf5d0b400730b2dec40a6989523fc420946 (diff) | |
re PR tree-optimization/58513 (*var and MEM[(const int &)var] (var has int* type) are not treated as the same data ref.)
2013-09-24 Richard Biener <rguenther@suse.de>
PR middle-end/58513
* tree.c (reference_alias_ptr_type): Move ...
* alias.c (reference_alias_ptr_type): ... here and implement
in terms of the new reference_alias_ptr_type_1.
(ref_all_alias_ptr_type_p): New helper.
(get_deref_alias_set_1): Drop flag_strict_aliasing here,
use ref_all_alias_ptr_type_p.
(get_deref_alias_set): Add flag_strict_aliasing check here.
(reference_alias_ptr_type_1): New function, split out from ...
(get_alias_set): ... here.
(alias_ptr_types_compatible_p): New function.
* alias.h (reference_alias_ptr_type): Declare.
(alias_ptr_types_compatible_p): Likewise.
* tree.h (reference_alias_ptr_type): Remove.
* fold-const.c (operand_equal_p): Use alias_ptr_types_compatible_p
to compare MEM_REF alias types.
* g++.dg/vect/pr58513.cc: New testcase.
From-SVN: r202865
Diffstat (limited to 'gcc/alias.h')
| -rw-r--r-- | gcc/alias.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/alias.h b/gcc/alias.h index af739a8eef6..dd4b641ee8c 100644 --- a/gcc/alias.h +++ b/gcc/alias.h @@ -41,6 +41,8 @@ extern int alias_sets_conflict_p (alias_set_type, alias_set_type); extern int alias_sets_must_conflict_p (alias_set_type, alias_set_type); extern int objects_must_conflict_p (tree, tree); extern int nonoverlapping_memrefs_p (const_rtx, const_rtx, bool); +tree reference_alias_ptr_type (tree); +bool alias_ptr_types_compatible_p (tree, tree); /* This alias set can be used to force a memory to conflict with all other memories, creating a barrier across which no memory reference |