From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-458645-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 27162 invoked by alias); 16 Aug 2014 17:38:45 -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 26741 invoked by uid 55); 16 Aug 2014 17:38:40 -0000
From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/62030] wrong code due to ifcvt merging two stores which have different aliasing sets
Date: Sat, 16 Aug 2014 17:38:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: rtl-optimization
X-Bugzilla-Version: 5.0
X-Bugzilla-Keywords: alias, patch, wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: vries at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: vries at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields:
Message-ID: <bug-62030-4-yH1D5Rywla@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-62030-4@http.gcc.gnu.org/bugzilla/>
References: <bug-62030-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2014-08/txt/msg01142.txt.bz2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62030

--- Comment #10 from vries at gcc dot gnu.org ---
Author: vries
Date: Sat Aug 16 17:38:04 2014
New Revision: 214067

URL: https://gcc.gnu.org/viewcvs?rev=214067&root=gcc&view=rev
Log:
Fix if-conversion pass for dead type-unsafe code

2014-08-15  Tom de Vries  <tom@codesourcery.com>

    Backport from mainline:
    2014-08-14  Tom de Vries  <tom@codesourcery.com>

    PR rtl-optimization/62004
    PR rtl-optimization/62030
    * ifcvt.c (rtx_interchangeable_p): New function.
    (noce_try_move, noce_process_if_block): Use rtx_interchangeable_p.

    * gcc.dg/pr62004.c: New test.
    * gcc.dg/pr62030.c: Same.
    * gcc.target/mips/pr62030-octeon.c: Same.

    2014-08-05  Richard Biener  <rguenther@suse.de>

    * emit-rtl.h (mem_attrs_eq_p): Declare.
    * emit-rtl.c (mem_attrs_eq_p): Export.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/pr62004.c
    branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/pr62030.c
    branches/gcc-4_8-branch/gcc/testsuite/gcc.target/mips/pr62030-octeon.c
Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/emit-rtl.c
    branches/gcc-4_8-branch/gcc/emit-rtl.h
    branches/gcc-4_8-branch/gcc/ifcvt.c
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog