From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: master 289000e: Merge branch 'feature/native-comp' into trunk Date: Mon, 26 Apr 2021 20:25:17 +0300 Message-ID: <83y2d5hsaq.fsf@gnu.org> References: <20210425182508.6CC7C2094D@vcs0.savannah.gnu.org> <831rayktot.fsf@gnu.org> <83v989jmuc.fsf@gnu.org> <83czuhjh0r.fsf@gnu.org> <83bla1jd0w.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="11880"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org, akrl@sdf.org To: Alan Mackenzie Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Apr 26 19:26:54 2021 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 1lb50X-0002nK-Mh for ged-emacs-devel@m.gmane-mx.org; Mon, 26 Apr 2021 19:26:53 +0200 Original-Received: from localhost ([::1]:50998 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lb50W-00019m-M2 for ged-emacs-devel@m.gmane-mx.org; Mon, 26 Apr 2021 13:26:52 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:56050) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lb4zM-0000cT-H2 for emacs-devel@gnu.org; Mon, 26 Apr 2021 13:25:41 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:33163) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lb4zJ-0006gq-0Q; Mon, 26 Apr 2021 13:25:37 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:3821 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1lb4zH-0000k4-Ux; Mon, 26 Apr 2021 13:25:36 -0400 In-Reply-To: (message from Alan Mackenzie on Mon, 26 Apr 2021 17:02:44 +0000) 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:268495 Archived-At: > Date: Mon, 26 Apr 2021 17:02:44 +0000 > Cc: akrl@sdf.org, emacs-devel@gnu.org > From: Alan Mackenzie > > Put point at the start of xdisp.c (or any other large file), optionally > type and delete a space (to clear font-lock text properties), and do M-: > (time-scroll). This scrolls through the buffer one screenful at a time, > displaying each screenful, then reports the total time. > > > I've come to the conclusion in the last hour or so that CC Mode just > isn't sped up much at all by native compilation. Using Andrea's tip of > C-h f c-mode + look for "natively compiled", it is clear that the > natively compiled files _are_ being used. Yes, for this benchmark, I find the natively-compiled code somewhat (by about 5%) _slower_ than the byte-compiled code. But this benchmark only shows off the fontifications, so maybe it isn't surprising. CC Mode is much more than that.