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r135754 - in /trunk/gcc: ChangeLog testsuite/Ch...
- From: rguenth at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Thu, 22 May 2008 10:32:55 -0000
- Subject: r135754 - in /trunk/gcc: ChangeLog testsuite/Ch...
Author: rguenth
Date: Thu May 22 10:32:55 2008
New Revision: 135754
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=135754
Log:
2008-05-22 Richard Guenther <rguenther@suse.de>
* tree-dfa.c (refs_may_alias_p): Exit early if possible. Handle
more cases of offset disambiguation that is possible if
strict-aliasing rules apply.
* tree-ssa-loop-im.c (mem_refs_may_alias_p): Use refs_may_alias_p
for basic offset and type-based disambiguation.
* gcc.dg/tree-ssa/alias-18.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/alias-18.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-dfa.c
trunk/gcc/tree-ssa-loop-im.c