From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12021 invoked by alias); 7 Nov 2010 21:08:10 -0000 Received: (qmail 12013 invoked by uid 22791); 7 Nov 2010 21:08:09 -0000 X-SWARE-Spam-Status: No, hits=-1.7 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,SPF_HELO_PASS,TW_TM,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from smtp-out.google.com (HELO smtp-out.google.com) (216.239.44.51) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sun, 07 Nov 2010 21:08:03 +0000 Received: from wpaz37.hot.corp.google.com (wpaz37.hot.corp.google.com [172.24.198.101]) by smtp-out.google.com with ESMTP id oA7L816G032468 for ; Sun, 7 Nov 2010 13:08:01 -0800 Received: from qyk38 (qyk38.prod.google.com [10.241.83.166]) by wpaz37.hot.corp.google.com with ESMTP id oA7L806s023802 for ; Sun, 7 Nov 2010 13:08:00 -0800 Received: by qyk38 with SMTP id 38so1294800qyk.16 for ; Sun, 07 Nov 2010 13:08:00 -0800 (PST) MIME-Version: 1.0 Received: by 10.229.232.205 with SMTP id jv13mr4409758qcb.68.1289164079691; Sun, 07 Nov 2010 13:07:59 -0800 (PST) Received: by 10.220.117.140 with HTTP; Sun, 7 Nov 2010 13:07:59 -0800 (PST) In-Reply-To: References: Date: Sun, 07 Nov 2010 21:29:00 -0000 Message-ID: Subject: Re: Fix PR/46200 -- ivopt bug in test condition cost computation From: Xinliang David Li To: "H.J. Lu" Cc: GCC Patches , Zdenek Dvorak Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-System-Of-Record: true 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: 2010-11/txt/msg00699.txt.bz2 I have no idea why my patch would have affected it, but this seems to be a problem in double_int overflow in tree-vrp. I will send out a patch shortly. David On Fri, Nov 5, 2010 at 1:32 PM, H.J. Lu wrote: > On Fri, Oct 29, 2010 at 1:28 PM, Xinliang David Li w= rote: >> Hi, please review the patch attached. Regression and some performance >> test is under going. >> >> Thanks, >> >> David >> >> >> 2010-10-29 =A0Xinliang David Li =A0 >> >> =A0 =A0 =A0 =A0PR target/46200 >> =A0 =A0 =A0 =A0* tree-ssa-loop-ivopts.c (get_computation_cost_at): >> =A0 =A0 =A0 =A0Adjust cbase if the use stmt is after iv update. >> > > This patch may have caused: > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D46316 > > You need to build a 32bit gcc to reproduce it. I am using > > CC=3D"gcc -m32" CXX=3D"g++ -m32" =A0configure =A0i686-linux > > on Fedora 16/Intel64 to build 32bit GCC. > > > -- > H.J. >