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[Bug tree-optimization/49822] [4.7 regression] Segfault in remove_prop_source_from_use
- 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: Mon, 25 Jul 2011 14:15:40 +0000
- Subject: [Bug tree-optimization/49822] [4.7 regression] Segfault in remove_prop_source_from_use
- Auto-submitted: auto-generated
- References: <bug-49822-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49822
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-25 14:15:06 UTC ---
Author: rguenth
Date: Mon Jul 25 14:15:02 2011
New Revision: 176745
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=176745
Log:
2011-07-25 Richard Guenther <rguenther@suse.de>
PR tree-optimization/49822
* tree-ssa-forwprop.c (remove_prop_source_from_use): Robustify
more. Make sure to preserve stmts with side-effects. Properly
handle virtual defs, follow a longer def chain.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-forwprop.c