From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-419910-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 18685 invoked by alias); 12 Apr 2013 09:13:27 -0000
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
Received: (qmail 18610 invoked by uid 48); 12 Apr 2013 09:13:24 -0000
From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/56918] [4.8 Regression] incorrect auto-vectorization of array initialization
Date: Fri, 12 Apr 2013 09:13:00 -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: jakub at gcc dot gnu.org
X-Bugzilla-Status: RESOLVED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: jakub at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 4.8.1
X-Bugzilla-Changed-Fields: Status Resolution
Message-ID: <bug-56918-4-F5EMSFK23M@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-56918-4@http.gcc.gnu.org/bugzilla/>
References: <bug-56918-4@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
X-SW-Source: 2013-04/txt/msg01055.txt.bz2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56918

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-12 09:13:24 UTC ---
Author: jakub
Date: Fri Apr 12 08:18:59 2013
New Revision: 197846

URL: http://gcc.gnu.org/viewcvs?rev=197846&root=gcc&view=rev
Log:
    PR tree-optimization/56918
    PR tree-optimization/56920
    * fold-const.c (int_const_binop_1): Use op1.mul_with_sign (op2, ...)
    instead of op1 - op2.  Pass 2 * TYPE_PRECISION (type) as second
    argument to rshift method.  For 2 * HOST_BITS_PER_WIDE_INT precision
    use wide_mul_with_sign method.

    * gcc.dg/vect/pr56918.c: New test.
    * gcc.dg/vect/pr56920.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr56918.c
    trunk/gcc/testsuite/gcc.dg/vect/pr56920.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog

Author: jakub
Date: Fri Apr 12 08:38:29 2013
New Revision: 197847

URL: http://gcc.gnu.org/viewcvs?rev=197847&root=gcc&view=rev
Log:
    PR tree-optimization/56918
    PR tree-optimization/56920
    * fold-const.c (int_const_binop_1): Use op1.mul_with_sign (op2, ...)
    instead of op1 - op2.  Pass 2 * TYPE_PRECISION (type) as second
    argument to rshift method.

    * gcc.dg/vect/pr56918.c: New test.
    * gcc.dg/vect/pr56920.c: New test.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/vect/pr56918.c
    branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/vect/pr56920.c
Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/fold-const.c
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog