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[Bug tree-optimization/19831] Missing DSE/malloc/free optimization
- 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: Thu, 08 Sep 2011 09:21:47 +0000
- Subject: [Bug tree-optimization/19831] Missing DSE/malloc/free optimization
- Auto-submitted: auto-generated
- References: <bug-19831-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19831
--- Comment #9 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-09-08 09:21:47 UTC ---
Author: rguenth
Date: Thu Sep 8 09:21:39 2011
New Revision: 178683
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=178683
Log:
2011-09-08 Richard Guenther <rguenther@suse.de>
PR tree-optimization/19831
* tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Do not mark
allocation functions as necessary.
* gcc.dg/tree-ssa/ssa-dce-8.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-8.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-dce.c