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tree-ssa-alias.c (stmt_kills_ref_p_1): Properly compare MEM_REF offsets. 

2013-05-17  Richard Biener  <rguenther@suse.de>

	* tree-ssa-alias.c (stmt_kills_ref_p_1): Properly compare
	MEM_REF offsets.

From-SVN: r199014
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Richard Biener 2013-05-17 12:47:45 +00:00 committed by Richard Biener
parent 38050e90ba
commit 2a293391ec
2 changed files with 7 additions and 2 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2013-05-17 Richard Biener <rguenther@suse.de>
* tree-ssa-alias.c (stmt_kills_ref_p_1): Properly compare
MEM_REF offsets.
2013-05-17 Jakub Jelinek <jakub@redhat.com> 2013-05-17 Jakub Jelinek <jakub@redhat.com>
* gcc.c (SANITIZER_SPEC): Reject -fsanitize=address -fsanitize=thread * gcc.c (SANITIZER_SPEC): Reject -fsanitize=address -fsanitize=thread

4
gcc/tree-ssa-alias.c
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@ -2002,8 +2002,8 @@ stmt_kills_ref_p_1 (gimple stmt, ao_ref *ref)
if (TREE_CODE (base) == MEM_REF && TREE_CODE (ref->base) == MEM_REF if (TREE_CODE (base) == MEM_REF && TREE_CODE (ref->base) == MEM_REF
&& TREE_OPERAND (base, 0) == TREE_OPERAND (ref->base, 0)) && TREE_OPERAND (base, 0) == TREE_OPERAND (ref->base, 0))
{ {
if (!tree_int_cst_equal (TREE_OPERAND (base, 0), if (!tree_int_cst_equal (TREE_OPERAND (base, 1),
TREE_OPERAND (ref->base, 0))) TREE_OPERAND (ref->base, 1)))
{ {
double_int off1 = mem_ref_offset (base); double_int off1 = mem_ref_offset (base);
off1 = off1.lshift (BITS_PER_UNIT == 8 off1 = off1.lshift (BITS_PER_UNIT == 8