From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4750 invoked by alias); 30 Nov 2012 10:43:15 -0000 Received: (qmail 4735 invoked by uid 22791); 30 Nov 2012 10:43:15 -0000 X-SWARE-Spam-Status: No, hits=-5.1 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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-lb0-f175.google.com (HELO mail-lb0-f175.google.com) (209.85.217.175) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 30 Nov 2012 10:43:10 +0000 Received: by mail-lb0-f175.google.com with SMTP id gg13so339585lbb.20 for ; Fri, 30 Nov 2012 02:43:09 -0800 (PST) Received: by 10.112.43.161 with SMTP id x1mr675353lbl.32.1354272189168; Fri, 30 Nov 2012 02:43:09 -0800 (PST) MIME-Version: 1.0 Received: by 10.112.88.99 with HTTP; Fri, 30 Nov 2012 02:42:29 -0800 (PST) In-Reply-To: <50B88CDF.6030508@gnu.org> References: <50B88CDF.6030508@gnu.org> From: Steven Bosscher Date: Fri, 30 Nov 2012 10:43:00 -0000 Message-ID: Subject: Re: [PATCH] Fix allocation of reg_known_value To: Paolo Bonzini Cc: Uros Bizjak , gcc-patches@gcc.gnu.org Content-Type: text/plain; charset=ISO-8859-1 X-IsSubscribed: yes 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/msg02532.txt.bz2 On Fri, Nov 30, 2012 at 11:39 AM, Paolo Bonzini wrote: > 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. Or open a PR and assign it to me, ultimately I'm responsible for this breakage. Ciao! Steven