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[Bug tree-optimization/57685] [4.8 Regression] GCC stuck in an infinite loop
- 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, 09 Sep 2013 09:48:45 +0000
- Subject: [Bug tree-optimization/57685] [4.8 Regression] GCC stuck in an infinite loop
- Auto-submitted: auto-generated
- References: <bug-57685-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57685
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Sep 9 09:48:43 2013
New Revision: 202386
URL: http://gcc.gnu.org/viewcvs?rev=202386&root=gcc&view=rev
Log:
2013-09-09 Richard Biener <rguenther@suse.de>
Backport from mainline
2013-08-29 Richard Biener <rguenther@suse.de>
PR tree-optimization/57685
* tree-vrp.c (register_edge_assert_for_1): Recurse only for
single-use operands to avoid exponential complexity.
* gcc.dg/torture/pr57685.c: New testcase.
Added:
branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/torture/pr57685.c
Modified:
branches/gcc-4_8-branch/gcc/ChangeLog
branches/gcc-4_8-branch/gcc/testsuite/ChangeLog
branches/gcc-4_8-branch/gcc/tree-vrp.c