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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/58277] [4.7 Regression] wrong code at -O3
Date: Wed, 07 May 2014 16:02:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58277

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed May  7 16:01:24 2014
New Revision: 210171

URL: http://gcc.gnu.org/viewcvs?rev=210171&root=gcc&view=rev
Log:
    Backported from mainline
    2013-08-30  Jakub Jelinek  <jakub@redhat.com>

    PR tree-optimization/58277
    * tree-ssa-strlen.c (strlen_enter_block): If do_invalidate gave up
    after seeing too many stmts with vdef in between dombb and current
    bb, invalidate everything.

    * gcc.c-torture/execute/pr58277-1.c: New test.
    * gcc.c-torture/execute/pr58277-2.c: New test.

Added:
    branches/gcc-4_7-branch/gcc/testsuite/gcc.c-torture/execute/pr58277-1.c
    branches/gcc-4_7-branch/gcc/testsuite/gcc.c-torture/execute/pr58277-2.c
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_7-branch/gcc/tree-ssa-strlen.c