From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: "otadmor ." Newsgroups: gmane.emacs.devel Subject: Re: [SOLVED] (was: very different start up for emacs master compared with 3 month ago) Date: Wed, 14 Aug 2019 00:10:50 +0300 Message-ID: References: <87sgqanxxk.fsf@mat.ucm.es> <83blwy9vef.fsf@gnu.org> <87tvale3t6.fsf_-_@mat.ucm.es> <83o90trvf3.fsf@gnu.org> <83blwssxn0.fsf@gnu.org> Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="000000000000f6f51805900613b8" Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="194710"; mail-complaints-to="usenet@blaine.gmane.org" Cc: oub@mat.ucm.es, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Aug 13 23:14:25 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hxe7d-000oXl-50 for ged-emacs-devel@m.gmane.org; Tue, 13 Aug 2019 23:14:25 +0200 Original-Received: from localhost ([::1]:55576 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hxe7c-0007YJ-4w for ged-emacs-devel@m.gmane.org; Tue, 13 Aug 2019 17:14:24 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:42809) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hxe4V-0001TS-LW for emacs-devel@gnu.org; Tue, 13 Aug 2019 17:11:13 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hxe4R-0003rd-Sv for emacs-devel@gnu.org; Tue, 13 Aug 2019 17:11:11 -0400 Original-Received: from mail-lj1-x22e.google.com ([2a00:1450:4864:20::22e]:46278) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hxe4O-0003pR-ME; Tue, 13 Aug 2019 17:11:04 -0400 Original-Received: by mail-lj1-x22e.google.com with SMTP id f9so4326046ljc.13; Tue, 13 Aug 2019 14:11:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=2Cvu5oT0YAIlXZ+mC0fGBOeugGsO27KkKN1y+RVE4gk=; b=dsUw1/No5FKcC/z0vo2RrKuR31Vsvvq/FOXHO0jQNK+cpRfH0h2fjfzbPzBfuWmmMS 3WVNXvpJqtlb/klEisESbDQ3c4hJnnrrz/V8OXqFeN8RMUxjXF5HN/C0wT7if87r8QkI u+G4T3qoEaeoozLWy7MEOKiA1v9xLnFJwxOBGWTe744MFtchkqVuH9Dq199KtPs/90V5 YHJbOHDbWzNiB9qeZPRYAgVVlT9sTEUaZWV6CtUVCtyFvyS9XZs4oMlZjHZCfz0ykcZK j/YDnrmtE/k94a6fVy42jDiBNh5+bGrPDJ/aZgSYAzVH09GAI194CFXWCY22uLH19+Ij S2VQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=2Cvu5oT0YAIlXZ+mC0fGBOeugGsO27KkKN1y+RVE4gk=; b=Nyy6KJaZOegllPz4YdmH/TqdjHkPUJjcPZFuHvOF97baqUhkEqreBNNJ/8wf/Qv8s3 xITMMKj7Sdq1iCBK5gVCU29qwCtOZ2Me6A+v7DUOdIyDt8f8KqQMgPiLXMTjLhWNy5jj xqHoD5PL9plkS+0pee2GjN1Squ75fHSuafTOM1Pb+J7+aPCaGlIe8ASXApXOEX+PJEgz NC7Q0If6H5DDmZZTUlvFg/mlqAC6c0ZQBgNXHAot9d5nFBmIpd0S2DOwSotfBsTipuNE PaKsZgKFEbY4Mvx7WEDMjKEQXNIfAEhVL3mKqt2C5eJX3HRCueXfHXV2qXkMgOMBZo5k uiwA== X-Gm-Message-State: APjAAAWrGWH7A5yMZVLK7GoDUKfhfDwG1oy1MYvmhahCXj56nTAG4ztx 2I0QvP3UBzCfamH2e/Nc60pC6rfR1PxwaiHAmU/yrg== X-Google-Smtp-Source: APXvYqycdKIvBes4+J0g4uExNkdaYG4NYvwNgV0rPwd6SC3e+hLmah4OUwWyM1vA2WE1lFX+u3OtZlgDMmLdGmAMpRI= X-Received: by 2002:a2e:8495:: with SMTP id b21mr22458824ljh.149.1565730662707; Tue, 13 Aug 2019 14:11:02 -0700 (PDT) In-Reply-To: <83blwssxn0.fsf@gnu.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::22e X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:239350 Archived-At: --000000000000f6f51805900613b8 Content-Type: text/plain; charset="UTF-8" Are there any known issues with Ofast? On Tue, Aug 13, 2019, 21:56 Eli Zaretskii wrote: > > From: "otadmor ." > > Date: Tue, 13 Aug 2019 21:46:48 +0300 > > Cc: Uwe Brauer , emacs-devel@gnu.org > > > > When compiling emacs for daily use is it better to compile with -O? Or > without -O at all? > > Which optimization level is suggested? > > Using -O0 produces a binary that's slower, but if it crashes or you > need to debug it, the information you can report is more full and > reliable. Letting the build use the default optimization produces a > faster program, but it's harder to debug. > > What to do is up to you. I debug the development version of Emacs > quite a lot, so I always build the development snapshots with -O0. > --000000000000f6f51805900613b8 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Are there any known issues with Ofast?

On Tue, Aug 13, = 2019, 21:56 Eli Zaretskii <eliz@gnu.org<= /a>> wrote:
> From: "ota= dmor ." <otadmor@gmail.com>
> Date: Tue, 13 Aug 2019 21:46:48 +0300
> Cc: Uwe Brauer <oub@mat.ucm.es>, emacs-devel@gnu.org
>
> When compiling emacs for daily use is it better to compile with -O? Or= without -O at all?
> Which optimization level is suggested?

Using -O0 produces a binary that's slower, but if it crashes or you
need to debug it, the information you can report is more full and
reliable.=C2=A0 Letting the build use the default optimization produces a faster program, but it's harder to debug.

What to do is up to you.=C2=A0 I debug the development version of Emacs
quite a lot, so I always build the development snapshots with -O0.
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