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[Bug tree-optimization/60098] DSE fails to DSE errno settings
- 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 Jun 2014 11:57:06 +0000
- Subject: [Bug tree-optimization/60098] DSE fails to DSE errno settings
- Auto-submitted: auto-generated
- References: <bug-60098-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60098
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Jun 4 11:56:34 2014
New Revision: 211224
URL: http://gcc.gnu.org/viewcvs?rev=211224&root=gcc&view=rev
Log:
2014-06-04 Richard Biener <rguenther@suse.de>
PR tree-optimization/60098
* tree-ssa-dse.c (dse_possible_dead_store_p): Walk until
we hit a kill.
(dse_optimize_stmt): Simplify, now that we found a kill
earlier.
* gcc.dg/tree-ssa/ssa-dse-15.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-15.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-dse.c