r179858 - in /trunk/gcc: ChangeLog tree-ssa-ali...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Wed Oct 12 15:28:48 2011
New Revision: 179858

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179858
Log:
2011-10-12  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-alias.c (maybe_skip_until): Cache also at the point
	of the first store we visit in a basic-block.
	(get_continuation_for_phi): Search for a candidate VUSE that
	might dominates all others.  Do pairwise disambiguation against
	that candidate.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-alias.c