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[Bug tree-optimization/51042] [4.5/4.6 Regression] endless recursion in phi_translate
- 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: Tue, 03 Jan 2012 14:46:08 +0000
- Subject: [Bug tree-optimization/51042] [4.5/4.6 Regression] endless recursion in phi_translate
- Auto-submitted: auto-generated
- References: <bug-51042-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51042
--- Comment #8 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-03 14:46:08 UTC ---
Author: rguenth
Date: Tue Jan 3 14:46:03 2012
New Revision: 182848
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182848
Log:
2012-01-03 Richard Guenther <rguenther@suse.de>
Backport from mainline
2011-11-10 Richard Guenther <rguenther@suse.de>
PR tree-optimization/51042
* tree-ssa-pre.c (phi_translate_1): Avoid recursing on
self-referential expressions. Refactor code to avoid duplication.
* gcc.dg/torture/pr51042.c: New testcase.
Added:
branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/torture/pr51042.c
Modified:
branches/gcc-4_6-branch/gcc/ChangeLog
branches/gcc-4_6-branch/gcc/testsuite/ChangeLog
branches/gcc-4_6-branch/gcc/tree-ssa-pre.c