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[Bug tree-optimization/81900] [8 Regression] GCC trunk miscompiles Perl / __sigsetjmp issue
- 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, 21 Aug 2017 13:19:12 +0000
- Subject: [Bug tree-optimization/81900] [8 Regression] GCC trunk miscompiles Perl / __sigsetjmp issue
- Auto-submitted: auto-generated
- References: <bug-81900-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81900
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Aug 21 13:18:35 2017
New Revision: 251226
URL: https://gcc.gnu.org/viewcvs?rev=251226&root=gcc&view=rev
Log:
2017-08-21 Richard Biener <rguenther@suse.de>
PR tree-optimization/81900
* tree-ssa-pre.c (compute_antic_aux): Properly compute changed
for blocks with abnormal predecessors.
(compute_antic): Do not set visited flag prematurely.
* gcc.dg/torture/pr81900.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr81900.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-pre.c