From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 25071 invoked by alias); 28 Apr 2004 13:47:05 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Received: (qmail 25030 invoked from network); 28 Apr 2004 13:47:03 -0000 Received: from unknown (HELO cam-admin0.cambridge.arm.com) (193.131.176.58) by sources.redhat.com with SMTP; 28 Apr 2004 13:47:03 -0000 Received: from cam-mail2.cambridge.arm.com (cam-mail2.cambridge.arm.com [10.1.127.39]) by cam-admin0.cambridge.arm.com (8.12.10/8.12.10) with ESMTP id i3SDl1k1005805; Wed, 28 Apr 2004 14:47:01 +0100 (BST) Received: from ZIPPY.Emea.Arm.com (george.emea.arm.com [10.1.255.81]) by cam-mail2.cambridge.arm.com (8.9.3/8.9.3) with ESMTP id OAA18047; Wed, 28 Apr 2004 14:46:56 +0100 (BST) Received: zippy.emea.arm.com 10.1.255.80 from 10.1.205.4 10.1.205.4 via HTTP with MS-WebStorage 6.5.6944 Received: from pc960.cambridge.arm.com by zippy.emea.arm.com; 28 Apr 2004 14:47:01 +0100 Subject: Re: Patch ping From: Richard Earnshaw To: Paul Brook Cc: gcc-patches@gcc.gnu.org In-Reply-To: <200404281433.58671.paul@codesourcery.com> References: <200404281433.58671.paul@codesourcery.com> Content-Type: text/plain Content-Transfer-Encoding: 7bit Message-Id: <1083160020.14083.112.camel@pc960.cambridge.arm.com> Mime-Version: 1.0 Date: Wed, 28 Apr 2004 13:51:00 -0000 X-SW-Source: 2004-04/txt/msg01864.txt.bz2 On Wed, 2004-04-28 at 14:33, Paul Brook wrote: > Patch ping: Output dwarf expressions for memory locations involving shifts. > > http://gcc.gnu.org/ml/gcc-patches/2004-04/msg00856.html > > Paul I don't think this is quite right. The MULT code had some simplifications when one of the operands was 0. However, a shift by zero is not the same as a multiply by zero -- the later results in zero, the former is a NOP. R.