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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/56151] [4.8 Regression] Performance degradation after r194054 on x86 Atom.
Date: Tue, 12 Feb 2013 10:38:00 -0000	[thread overview]
Message-ID: <bug-56151-4-I5Um06aoBd@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-56151-4@http.gcc.gnu.org/bugzilla/>


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56151

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-02-12 10:37:42 UTC ---
Author: jakub
Date: Tue Feb 12 10:37:38 2013
New Revision: 195972

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195972
Log:
    PR rtl-optimization/56151
    * optabs.c (add_equal_note): Don't return 0 if target is a MEM,
    equal to op0 or op1, and last_insn pattern is CODE operation
    with MEM dest and one of the operands matches that MEM.

    * gcc.target/i386/pr56151.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr56151.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/optabs.c
    trunk/gcc/testsuite/ChangeLog


  parent reply	other threads:[~2013-02-12 10:38 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-30 15:18 [Bug tree-optimization/56151] New: " ysrumyan at gmail dot com
2013-01-30 15:20 ` [Bug tree-optimization/56151] " ysrumyan at gmail dot com
2013-01-30 16:04 ` [Bug rtl-optimization/56151] " rguenth at gcc dot gnu.org
2013-01-31  9:24 ` [Bug rtl-optimization/56151] [4.8 Regression] " rguenth at gcc dot gnu.org
2013-02-03  0:46 ` steven at gcc dot gnu.org
2013-02-03  1:05 ` steven at gcc dot gnu.org
2013-02-04 10:34 ` ebotcazou at gcc dot gnu.org
2013-02-04 12:04 ` jakub at gcc dot gnu.org
2013-02-04 17:14 ` jakub at gcc dot gnu.org
2013-02-04 17:59 ` steven at gcc dot gnu.org
2013-02-04 18:20 ` jakub at gcc dot gnu.org
2013-02-08 15:23 ` rguenth at gcc dot gnu.org
2013-02-08 15:29 ` jakub at gcc dot gnu.org
2013-02-11 15:42 ` jakub at gcc dot gnu.org
2013-02-12 10:38 ` jakub at gcc dot gnu.org [this message]
2013-02-12 10:39 ` jakub at gcc dot gnu.org

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