From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 3281 invoked by alias); 30 Nov 2012 10:39:41 -0000 Received: (qmail 3270 invoked by uid 22791); 30 Nov 2012 10:39:41 -0000 X-SWARE-Spam-Status: No, hits=-5.0 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,FREEMAIL_FROM,KHOP_RCVD_TRUST,KHOP_THREADED,RCVD_IN_DNSWL_LOW,RCVD_IN_HOSTKARMA_YE,TW_BG,TW_ZJ X-Spam-Check-By: sourceware.org Received: from mail-pb0-f47.google.com (HELO mail-pb0-f47.google.com) (209.85.160.47) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 30 Nov 2012 10:39:37 +0000 Received: by mail-pb0-f47.google.com with SMTP id un1so315670pbc.20 for ; Fri, 30 Nov 2012 02:39:36 -0800 (PST) Received: by 10.68.143.129 with SMTP id se1mr4551629pbb.67.1354271976812; Fri, 30 Nov 2012 02:39:36 -0800 (PST) Received: from yakj.usersys.redhat.com (93-34-169-1.ip50.fastwebnet.it. [93.34.169.1]) by mx.google.com with ESMTPS id o5sm2714799paz.32.2012.11.30.02.39.31 (version=TLSv1/SSLv3 cipher=OTHER); Fri, 30 Nov 2012 02:39:35 -0800 (PST) Message-ID: <50B88CDF.6030508@gnu.org> Date: Fri, 30 Nov 2012 10:43:00 -0000 From: Paolo Bonzini User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Uros Bizjak CC: gcc-patches@gcc.gnu.org, Steven Bosscher Subject: Re: [PATCH] Fix allocation of reg_known_value References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org X-SW-Source: 2012-11/txt/msg02531.txt.bz2 Il 29/11/2012 23:47, Uros Bizjak ha scritto: > This one-liner causes following runtime test failure [1] for > alphaev68-linux-gnu: > > FAIL: gfortran.fortran-torture/execute/save_1.f90 execution, -O2 > FAIL: gfortran.fortran-torture/execute/save_1.f90 execution, -O2 > -fomit-frame-pointer -finline-functions > FAIL: gfortran.fortran-torture/execute/save_1.f90 execution, -O2 > -fomit-frame-pointer -finline-functions -funroll-loops > FAIL: gfortran.fortran-torture/execute/save_1.f90 execution, -O2 > -fbounds-check > > The patch miscompiles libgfortran library. > > I will provide more info tomorrow, any hint what/where should I look > for differences? Anywhere. The bug disabled a large part of alias analysis. Perhaps you can bisect it and backport the fix along the steps. Paolo