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[Bug tree-optimization/53844] [4.6/4.7 Regression] GCC generates suboptimal code for unused members of classes in some cases on multiple targets.
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 04 Jul 2012 12:10:56 +0000
- Subject: [Bug tree-optimization/53844] [4.6/4.7 Regression] GCC generates suboptimal code for unused members of classes in some cases on multiple targets.
- Auto-submitted: auto-generated
- References: <bug-53844-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53844
--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-04 12:10:56 UTC ---
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