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2008-04-23 Richard Guenther <rguenther@suse.de>
authorrguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Wed, 23 Apr 2008 14:06:02 +0000 (14:06 +0000)
committerrguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Wed, 23 Apr 2008 14:06:02 +0000 (14:06 +0000)
commit6c711ccf41b5e712ebfad40c83278bf33775bd9b
tree92b446ae6c5a7e1732e139eb7761d3c20bb21399
parent2802826ef27413a276d109c673c5f3348f352191
2008-04-23  Richard Guenther  <rguenther@suse.de>

* alias.c (alias_set_subset_of): Correctly handle asking
if zero is a subset of an alias set with zero child.
* tree-ssa-alias.c (have_common_aliases_p): Simplify logic.
(compute_flow_insensitive_aliasing): Correctly walk all
pointers.  Do not unnecessarily union sets.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@134597 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog
gcc/alias.c
gcc/tree-ssa-alias.c