From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14155 invoked by alias); 16 Sep 2004 19:03:15 -0000 Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-owner@gcc.gnu.org Received: (qmail 14090 invoked from network); 16 Sep 2004 19:03:13 -0000 Received: from unknown (HELO mail.codesourcery.com) (65.74.133.10) by sourceware.org with SMTP; 16 Sep 2004 19:03:13 -0000 Received: (qmail 26289 invoked from network); 16 Sep 2004 19:03:13 -0000 Received: from localhost (HELO ?192.168.0.105?) (mitchell@127.0.0.1) by mail.codesourcery.com with SMTP; 16 Sep 2004 19:03:13 -0000 Message-ID: <4149E36C.7080006@codesourcery.com> Date: Thu, 16 Sep 2004 19:46:00 -0000 From: Mark Mitchell Organization: CodeSourcery, LLC User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7) Gecko/20040616 MIME-Version: 1.0 To: Per Bothner CC: gcc@gcc.gnu.org, java@gcc.gnu.org Subject: Re: GCC Status Report (2004-09-13) [--enable-mapped-location] References: <414627A4.4080109@codesourcery.com> <4149B3AA.8010708@bothner.com> <4149D668.6030007@codesourcery.com> <4149DBD3.4000000@bothner.com> <4149DF81.70105@codesourcery.com> <4149E1F7.5070009@bothner.com> In-Reply-To: <4149E1F7.5070009@bothner.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-SW-Source: 2004-09/txt/msg01018.txt.bz2 Per Bothner wrote: > Mark Mitchell wrote: > >> I think you should at least try for initial numbers on whatever >> machine you're using. Try compiling libstdc++, say, at least. If >> your patches aren't a performance win, they're not going to be >> terribly compelling; if they are a win, as expected, then that will >> make them much more compelling. > > > It will take a couple of days, at best, as I'll be travelling. > > Any earlier C-only test didn't show a clear difference either way. > > The patches are "winning" even if the immediate performance difference > is a wash because they'll allow us to track column numbers at little > or no extra cost. Yes, I agree -- if there is no performance downside, then there is some upside. I just want to check that there is indeed no downside, at least. -- Mark Mitchell CodeSourcery, LLC (916) 791-8304 mark@codesourcery.com