From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: =?utf-8?Q?=C3=93scar_Fuentes?= Newsgroups: gmane.emacs.devel Subject: Re: The Emacs master is much slower than the emacs-27 branch. Date: Sat, 05 Dec 2020 16:47:33 +0100 Message-ID: <87o8j8w8yy.fsf@telefonica.net> References: <874kl1spe9.fsf@gmx.net> <83blf9em55.fsf@gnu.org> <87zh2tr82r.fsf@gmx.net> <87v9dhr7i5.fsf@gmx.net> <838sadefiw.fsf@gnu.org> <83360le421.fsf@gnu.org> <83y2idcn8q.fsf@gnu.org> <83wnxxcmjr.fsf@gnu.org> <83tut0d7e9.fsf@gnu.org> <8c5fe90c-72ca-a2c3-29d2-1849458bb85a@gmx.at> <87wnxwwbqz.fsf@telefonica.net> <93719f51-14d1-2084-ce04-221344043721@gmx.at> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="9167"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: emacs-devel@gnu.org Cancel-Lock: sha1:IHJFVpa47i/+3aDcFXYvLOjbJdE= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Dec 05 16:48:28 2020 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1klZnQ-0002G6-QF for ged-emacs-devel@m.gmane-mx.org; Sat, 05 Dec 2020 16:48:28 +0100 Original-Received: from localhost ([::1]:43478 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1klZnP-0007hU-S6 for ged-emacs-devel@m.gmane-mx.org; Sat, 05 Dec 2020 10:48:27 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39734) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1klZmf-0007Fc-Uw for emacs-devel@gnu.org; Sat, 05 Dec 2020 10:47:42 -0500 Original-Received: from static.214.254.202.116.clients.your-server.de ([116.202.254.214]:58218 helo=ciao.gmane.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1klZme-0007NL-8u for emacs-devel@gnu.org; Sat, 05 Dec 2020 10:47:41 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1klZmb-0001NE-8G for emacs-devel@gnu.org; Sat, 05 Dec 2020 16:47:37 +0100 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=ged-emacs-devel@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:260375 Archived-At: Gregory Heytings via "Emacs development discussions." writes: >> >> Sorry. I'm still too dumb to understand >> > > No, you are definitely not! :-) > >> >> so I ask the following instead: >> >> (1) I can always compare -O1, -O2 and -O3 builds because these were >> _not_ affected by Paul's changes. Right? >> > > Yes. > >> >> (2) I cannot compare -Og builds because these _are_ affected by >> Paul's changes. At least Emacs 27 vs Emacs non-27 ones. Right? >> > > Yes. > >> >> (3) I'm yet unsure about -O0 builds. Are they (1)- or (2)-like? >> > > Like (2), at least with GCC on 64-bit GNU/Linux. Apparently Eli does > not see this on MS-Windows. -O0 does not observe the "inline" declaration nor does consider "static" functions for inlining, so -O0 should be comparable among versions, since the "extern inline" -> "static" -> "static inline" changes are not considered by -O0.