r189256 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Wed Jul  4 12:10:40 2012
New Revision: 189256

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=189256
Log:
2012-07-04  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/53844
	* tree-ssa-dse.c (dse_possible_dead_store_p): Properly handle
	the loop virtual PHI.

	* g++.dg/tree-ssa/pr53844.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/tree-ssa/pr53844.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dse.c