From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 78950 invoked by alias); 30 May 2017 06:59:42 -0000 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 Received: (qmail 78929 invoked by uid 89); 30 May 2017 06:59:39 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,RCVD_IN_SORBS_SPAM,SPF_PASS autolearn=no version=3.3.2 spammy=Hx-spam-relays-external:209.85.218.66, H*RU:209.85.218.66 X-HELO: mail-oi0-f66.google.com Received: from mail-oi0-f66.google.com (HELO mail-oi0-f66.google.com) (209.85.218.66) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 30 May 2017 06:59:38 +0000 Received: by mail-oi0-f66.google.com with SMTP id v80so14519618oie.2 for ; Mon, 29 May 2017 23:59:42 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=rXltqq1aj+cLQ5f2ksDXEe4J2xcssDVkHUU3CmrPl/w=; b=gkkrDarLtyRnTKckyvcguMD8o/xyhkVQq3alCN9hrOmdtPT7zMg9AaaZ6fEPN5vcID MiZ0AM9v2kFQH0xaLoIgLDbWJtTxIm9O744EObhzZrewJtsosXUFqO0a7Uo/d3/jafdU rTOr+3Y9kjrUpRt5te/uBWgjzMOPWKPUXFt3/D8xXvJlSi4Y/RImiDjLQq0zKMaHyFYL uaYivbVf4Rr5euq9dYhoY+LpjVlLCWCHNBRmXmXurQ57viGApQNPAYA+a/K62H4+3zET 5i/6f5RR3vCXmgUSzncbiZ6LAn8GwOc/c76x/Oubv5kqzM4q56udyL+8aEERyPUfXIXn GdGg== X-Gm-Message-State: AODbwcCxbikRjpWFth8wpPKW+dApsNglBFU1eLE2zA9jHRMoMXhPcLen 7eH6Kv4qWEFiHfjavuGgPPJlkcsGyA== X-Received: by 10.202.181.68 with SMTP id e65mr7373143oif.212.1496127580903; Mon, 29 May 2017 23:59:40 -0700 (PDT) MIME-Version: 1.0 Received: by 10.157.51.83 with HTTP; Mon, 29 May 2017 23:59:40 -0700 (PDT) In-Reply-To: <6237251.LWo8Wt74zX@polaris> References: <41109217-1bf5-b112-e783-8040196fd410@suse.cz> <6237251.LWo8Wt74zX@polaris> From: Richard Biener Date: Tue, 30 May 2017 07:00:00 -0000 Message-ID: Subject: Re: [RFC] [PATCH] Introduce configure flag --with-stage1-cflags. To: Eric Botcazou Cc: =?UTF-8?Q?Martin_Li=C5=A1ka?= , GCC Patches , Jakub Jelinek Content-Type: text/plain; charset="UTF-8" X-IsSubscribed: yes X-SW-Source: 2017-05/txt/msg02229.txt.bz2 On Mon, May 29, 2017 at 1:13 PM, Eric Botcazou wrote: >> After a discussion with Richi, using adding "-O2" to STAGE1 cflags with a >> recent enough compiler can significantly speed up bootstrap. Thus I'm >> suggesting to introduce --with-stage1-cflags where one can provide such >> options. > > -O1 is sufficient in my experience and far less risky than -O2 in this case. Are you sure? In my experience -O2 gets the most test coverage during lifetime of a particular release. Richard. > -- > Eric Botcazou