From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Making 'eq' == 'eql' in bignum branch Date: Fri, 03 Aug 2018 10:55:32 +0300 Message-ID: <834lgbvq8b.fsf@gnu.org> References: <29f933ac-a6bf-8742-66a7-0a9d6d3e5a88@disroot.org> <8e0320d9-e0d0-2b57-57cc-2df4399f133c@cs.ucla.edu> <87lgaio7xd.fsf@tromey.com> <877em1cb0i.fsf@tromey.com> <765767b2-d2e5-a9a6-f724-d58ecf4847bb@cs.ucla.edu> <76081b5d-8c10-0a37-2c97-d4864c0faa80@cs.ucla.edu> <09153aed-361d-4f82-d9ac-b502314769ae@cs.ucla.edu> <83600yt8ih.fsf@gnu.org> <83h8kgpnir.fsf@gnu.org> <7dd71d44-69bc-3adf-576b-8b9e31184a24@cs.ucla.edu> <83d0v4p1si.fsf@gnu.org> <827beb76-3adf-f2f9-33b1-1baee55680cd@cs.ucla.edu> <83wotbo04h.fsf@gnu.org> <77d5f8b0-2277-b28e-8565-d3e00c411795@cs.ucla.edu> <83ftzyocry.fsf@gnu.org> <837elao4bo.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1533282871 4532 195.159.176.226 (3 Aug 2018 07:54:31 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 3 Aug 2018 07:54:31 +0000 (UTC) Cc: monnier@iro.umontreal.ca, emacs-devel@gnu.org To: Paul Eggert Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Aug 03 09:54:27 2018 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1flUun-00012l-71 for ged-emacs-devel@m.gmane.org; Fri, 03 Aug 2018 09:54:25 +0200 Original-Received: from localhost ([::1]:49452 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1flUwt-0001q4-VO for ged-emacs-devel@m.gmane.org; Fri, 03 Aug 2018 03:56:36 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:34038) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1flUw6-0001oF-E0 for emacs-devel@gnu.org; Fri, 03 Aug 2018 03:55:47 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1flUw3-00053H-A0 for emacs-devel@gnu.org; Fri, 03 Aug 2018 03:55:46 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:58843) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1flUw3-000532-6j; Fri, 03 Aug 2018 03:55:43 -0400 Original-Received: from [176.228.60.248] (port=3182 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1flUw2-0004Zs-Jf; Fri, 03 Aug 2018 03:55:43 -0400 In-reply-to: (message from Paul Eggert on Fri, 3 Aug 2018 00:40:16 -0700) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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:228118 Archived-At: > Cc: monnier@iro.umontreal.ca, emacs-devel@gnu.org > From: Paul Eggert > Date: Fri, 3 Aug 2018 00:40:16 -0700 > > Eli Zaretskii wrote: > > Well, the FP calculations in Lisp are certainly in places that get > > used a lot: the line-move stuff and window.el stuff. > > OK, I constructed a little benchmark based on some of the window.el stuff, and > timed it with immediate floats instead of the longstanding way of implementing > floats as pointers into the heap, and on this benchmark Emacs was 82% faster > with immediate floats, i.e., the CPU time on my usual 64-bit platform for (bench > 1000000) shrank from 10.776 now to 5.914 seconds with immediate floats. So it > looks promising. This was the only benchmark I tried. That does sound promising, thanks.