From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 367 invoked by alias); 14 Feb 2010 22:34:44 -0000 Received: (qmail 358 invoked by uid 22791); 14 Feb 2010 22:34:44 -0000 X-SWARE-Spam-Status: No, hits=-1.4 required=5.0 tests=AWL,BAYES_05,SPF_HELO_PASS,SPF_PASS X-Spam-Check-By: sourceware.org Received: from lo.gmane.org (HELO lo.gmane.org) (80.91.229.12) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sun, 14 Feb 2010 22:34:40 +0000 Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1Ngn2z-0005QQ-Sk for gcc-help@gcc.gnu.org; Sun, 14 Feb 2010 23:34:37 +0100 Received: from ip-118-90-51-188.xdsl.xnet.co.nz ([118.90.51.188]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 14 Feb 2010 23:34:37 +0100 Received: from n.sherlock by ip-118-90-51-188.xdsl.xnet.co.nz with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 14 Feb 2010 23:34:37 +0100 To: gcc-help@gcc.gnu.org From: Nicholas Sherlock Subject: Re: optimizations flags that are equivalent to -O3 Date: Mon, 15 Feb 2010 09:14:00 -0000 Message-ID: References: <27586723.post@talk.nabble.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8) Gecko/20051201 Thunderbird/1.5 Mnenhy/0.7.3.0 In-Reply-To: <27586723.post@talk.nabble.com> X-IsSubscribed: yes Mailing-List: contact gcc-help-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-help-owner@gcc.gnu.org X-SW-Source: 2010-02/txt/msg00209.txt.bz2 On 15/02/2010 9:27 a.m., Little wrote: > It seems > -O3 turns on optimization flags that are not in the following list. Any > info... Thanks. Yes, that's correct. There are optimizations for which no flags exist and the only way of controlling them is with the -O flag. Cheers, Nicholas Sherlock