From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-366215-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 27973 invoked by alias); 24 Aug 2011 10:09:32 -0000
Received: (qmail 27961 invoked by uid 22791); 24 Aug 2011 10:09:30 -0000
X-SWARE-Spam-Status: No, hits=-2.9 required=5.0	tests=ALL_TRUSTED,AWL,BAYES_00
X-Spam-Check-By: sourceware.org
Received: from localhost (HELO gcc.gnu.org) (127.0.0.1)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 24 Aug 2011 10:09:07 +0000
From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/50067] [4.7 Regression] Wrong code with -fpredictive-commoning
Date: Wed, 24 Aug 2011 10:12:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: rguenth at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 4.7.0
X-Bugzilla-Changed-Fields:
Message-ID: <bug-50067-4-iyQtXP0KmX@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-50067-4@http.gcc.gnu.org/bugzilla/>
References: <bug-50067-4@http.gcc.gnu.org/bugzilla/>
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
MIME-Version: 1.0
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2011-08/txt/msg01989.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50067

--- Comment #15 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-08-24 10:07:24 UTC ---
Author: rguenth
Date: Wed Aug 24 10:07:20 2011
New Revision: 178028

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=178028
Log:
2011-08-24  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/50067
    * tree-data-ref.c (dr_analyze_indices): Do not add an access
    function for a MEM_REF base that has no evolution in the loop
    nest or that is not analyzable.

    * gcc.dg/torture/pr50067-3.c: New testcase.
    * gcc.dg/torture/pr50067-4.c: Likewise.
    * gcc.dg/torture/pr50067-5.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr50067-3.c
    trunk/gcc/testsuite/gcc.dg/torture/pr50067-4.c
    trunk/gcc/testsuite/gcc.dg/torture/pr50067-5.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-data-ref.c