From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-464215-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 11127 invoked by alias); 16 Oct 2014 09:56:01 -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 11045 invoked by uid 48); 16 Oct 2014 09:55:57 -0000
From: "clyon at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/62031] [4.8 Regression] Different results between O2 and O2 -fpredictive-commoning
Date: Thu, 16 Oct 2014 09:56:00 -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-Version: 4.7.2
X-Bugzilla-Keywords: wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: clyon 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: 4.8.4
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields:
Message-ID: <bug-62031-4-4HBjEkOIYd@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-62031-4@http.gcc.gnu.org/bugzilla/>
References: <bug-62031-4@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: 2014-10/txt/msg01236.txt.bz2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62031

--- Comment #12 from clyon at gcc dot gnu.org ---
Sorry, I thought you had the setup needed to reproduce the tests.

I am using qemu.

All execution tests fail (not only -O0), for instance with GCC configured as:
--target=arm-none-eabi --with-mode=arm --with-cpu=cortex-a9

FAIL: gcc.dg/torture/pr62031.c  -O0  execution test
FAIL: gcc.dg/torture/pr62031.c  -O1  execution test
FAIL: gcc.dg/torture/pr62031.c  -O2  execution test
FAIL: gcc.dg/torture/pr62031.c  -O3 -fomit-frame-pointer  execution test
FAIL: gcc.dg/torture/pr62031.c  -O3 -fomit-frame-pointer -funroll-loops 
execution test
FAIL: gcc.dg/torture/pr62031.c  -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions  execution test
FAIL: gcc.dg/torture/pr62031.c  -O3 -g  execution test
FAIL: gcc.dg/torture/pr62031.c  -Os  execution test
FAIL: gcc.dg/torture/pr62031.c  -O2 -flto -fno-use-linker-plugin
-flto-partition=none  execution test
FAIL: gcc.dg/torture/pr62031.c  -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  execution test