From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl1-x62e.google.com (mail-pl1-x62e.google.com [IPv6:2607:f8b0:4864:20::62e]) by sourceware.org (Postfix) with ESMTPS id 5B27638369CE for ; Sat, 10 Dec 2022 02:01:37 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 5B27638369CE Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pl1-x62e.google.com with SMTP id d7so6687968pll.9 for ; Fri, 09 Dec 2022 18:01:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=Py+rVjfhZ20FQ5vtpUxC+Dsmvli8MXZlZpJRnXObHg8=; b=VqElIMaxsBgDEFbEHD5wMkt4Mnuqt7C8SvCsk/Yc2beiorWF6ApUPr1rdbGUEhbNa5 nefR1QxtEZ/3unedz1ndzj+quXqTcyBIAgrPrqJZ+v+plWsZobPEyRIqAbqitTCB9hKM Q/bTNEFO3XIRSMIV8W4GKQ8AUTeP7pX5Je+/WFEkjry3jaNY8f1qkXJsAX+epdds8Hxj P8lPKu70alYUsAQAH/D8+UuMRL408/15aQAwUNgjgWahS6pozKEObgaRlUFBTKaDq3Fk igGSzVl9bUiPDrEZZ0gQ9qkoVRARvXaEB9E+vqlPqRKeX7OapWI+Ir6Qi01le8qxuRpk e07A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=Py+rVjfhZ20FQ5vtpUxC+Dsmvli8MXZlZpJRnXObHg8=; b=harQaUoUBmGtD1oHAiII3aVIVoj52zo0xWu5uQzj+gbwOPf3o9qc1QcDR3BNEzWnnA l8Fc3P8B6e4BWDFSFGTNdlh2zH7W2JjgA/23dEnRzcGiiJ36IPk3LcsSevPBlxczEBCG 5Ueq6TsJ7ryOBjNOYXvKM8bgp5+napByzHKiNca6gHtXQHzLnyowrwKZQJGIvNAgSPdc DfsKsq9fkXXG0P2K2hVclHXhWvcRHkXWhM4Qgdzn0pXQISJiuVggq36pogEmpleuRFay 04pyTb6vJqQqMfqHqzKCmLnrYawnFPavSk7eWc18vOy2Ne958pxFtgj20lsiuzEW5oi2 tx6g== X-Gm-Message-State: ANoB5pktMWoB6N+BMWJN+7agnmXChOy4geLEzzxFZh6aQW5dku2lTmIS zXEWboliKOrflmWj6aoMwEUOMbfnQM3RsOULmi0= X-Google-Smtp-Source: AA0mqf6wVa9EkoNMJG8AoB/B8gGvD8aq8/zrlaG62T8MLo9JkYh3QVJB6OLj7Fv9PUC+xTDh47noorf5O5fum5X4r9w= X-Received: by 2002:a17:90a:8402:b0:218:7744:5e9 with SMTP id j2-20020a17090a840200b00218774405e9mr106361515pjn.44.1670637695973; Fri, 09 Dec 2022 18:01:35 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: hongjie wu Date: Sat, 10 Dec 2022 10:01:24 +0800 Message-ID: Subject: Re: The method of determining the specific assignment of gcc optimization options To: Jonathan Wakely Cc: gcc@gcc.gnu.org Content-Type: multipart/alternative; boundary="0000000000006abf3d05ef6fa670" X-Spam-Status: No, score=4.1 required=5.0 tests=BAYES_05,BODY_8BITS,DEAR_SOMETHING,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=no autolearn_force=no version=3.4.6 X-Spam-Level: **** X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: --0000000000006abf3d05ef6fa670 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Thank you for your response. Jonathan Wakely =E4=BA=8E2022=E5=B9=B412=E6=9C=889= =E6=97=A5=E5=91=A8=E4=BA=94 22:40=E5=86=99=E9=81=93=EF=BC=9A > This question belongs on the gcc-help mailing list, not here. > > On Fri, 9 Dec 2022 at 12:01, hongjie wu via Gcc wrote: > > > > Dear Sir or Madam=EF=BC=8C > > I want to know how to obtain optimal level of the value of the > > What do you mean by optimal? > > They have pros and cons. > > > specific compiler options, for example - fexcess - precision =3D [fast= | > > standard] [default], including the default represent=EF=BC=9FOr how to = determine? > > gcc -Q --help=3Doptim > > > I am looking forward to your favorable replay. > --0000000000006abf3d05ef6fa670--