From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5676 invoked by alias); 9 Aug 2010 15:33:16 -0000 Received: (qmail 5661 invoked by uid 22791); 9 Aug 2010 15:33:16 -0000 X-SWARE-Spam-Status: No, hits=-1.8 required=5.0 tests=AWL,BAYES_00,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from mail.codesourcery.com (HELO mail.codesourcery.com) (38.113.113.100) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 09 Aug 2010 15:33:12 +0000 Received: (qmail 5083 invoked from network); 9 Aug 2010 15:33:10 -0000 Received: from unknown (HELO ?10.104.166.61?) (mitchell@127.0.0.2) by mail.codesourcery.com with ESMTPA; 9 Aug 2010 15:33:10 -0000 Message-ID: <4C601FAE.6080201@codesourcery.com> Date: Mon, 09 Aug 2010 15:53:00 -0000 From: Mark Mitchell User-Agent: Thunderbird 2.0.0.24 (Windows/20100228) MIME-Version: 1.0 To: Diego Novillo CC: Toon Moene , Steven Bosscher , Bernd Schmidt , Eric Botcazou , Richard Guenther , gcc-patches@gcc.gnu.org Subject: Re: The speed of the compiler, was: Re: Combine four insns References: <4C5C20D0.5020105@codesourcery.com> <4C5C8F7C.6010509@codesourcery.com> <201008071010.53419.ebotcazou@adacore.com> <4C5FEF18.7010504@codesourcery.com> <4C6011F7.5040904@moene.org> <4C601691.1000303@moene.org> <4C601E08.4020303@google.com> In-Reply-To: <4C601E08.4020303@google.com> 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: 2010-08/txt/msg00679.txt.bz2 Diego Novillo wrote: > Additionally, the very worst offender in terms of compile time is -g. > The size of debugging information is such, that I/O and communication > times increase significantly. And, in the case of C++, this is especially true, since you end up with information about the same classes in multiple places. -- Mark Mitchell CodeSourcery mark@codesourcery.com (650) 331-3385 x713