From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.devel Subject: Re: Making --with-wide-int the default Date: Fri, 16 Oct 2015 01:03:15 -0700 Organization: UCLA Computer Science Department Message-ID: <5620AF43.4050401@cs.ucla.edu> References: <54E0D181.2080802@dancol.org> <83r3trulse.fsf@gnu.org> <54E0D7E0.305@87.69.4.28> <83h9unukbg.fsf@gnu.org> <54E0DEF8.7020901@dancol> <83egpruiyp.fsf@gnu.org> <54E0FF93.2000104@dancol.org> <5610ED13.1010406@dancol.org> <56117F37.9060808@dancol.org> <83oag087gs.fsf@gnu.org> <83oafz70im.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1444982627 20892 80.91.229.3 (16 Oct 2015 08:03:47 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 16 Oct 2015 08:03:47 +0000 (UTC) Cc: emacs-devel@gnu.org To: Eli Zaretskii , Juanma Barranquero Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Oct 16 10:03:33 2015 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Zmzz6-0005D8-23 for ged-emacs-devel@m.gmane.org; Fri, 16 Oct 2015 10:03:28 +0200 Original-Received: from localhost ([::1]:51505 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zmzz5-0000O5-Cj for ged-emacs-devel@m.gmane.org; Fri, 16 Oct 2015 04:03:27 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60555) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zmzz0-0000LC-Ls for emacs-devel@gnu.org; Fri, 16 Oct 2015 04:03:23 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zmzyz-0005En-Ou for emacs-devel@gnu.org; Fri, 16 Oct 2015 04:03:22 -0400 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:38282) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zmzyv-0005CS-Rt; Fri, 16 Oct 2015 04:03:17 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id C79D2160CB6; Fri, 16 Oct 2015 01:03:16 -0700 (PDT) Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id eI1qwKZx0Jw6; Fri, 16 Oct 2015 01:03:16 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 19301160D6B; Fri, 16 Oct 2015 01:03:16 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id qDCExnLZyjju; Fri, 16 Oct 2015 01:03:16 -0700 (PDT) Original-Received: from [192.168.1.9] (pool-100-32-155-148.lsanca.fios.verizon.net [100.32.155.148]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id EBC94160CB6; Fri, 16 Oct 2015 01:03:15 -0700 (PDT) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 In-Reply-To: <83oafz70im.fsf@gnu.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 131.179.128.68 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:191715 Archived-At: Eli Zaretskii wrote: > To make it the default for all 32-bit builds, we should make sure it > works well on the other supported platforms. Perhaps Paul could tell > which platforms he found this to work on, and then we could decide. --with-wide-int is not the default because Stefan was worried about its performance implications on older, slower 32-bit machines (such as Stefan's and/or RMS's laptops at the time, if I recall correctly). There shouldn't be any correctness problem with it; it's a performance issue. I typically use 64-bit platforms nowadays, where the issue is moot. When I do use 32-bit platforms, I normally configure --with-wide-int. There is roughly a 30% CPU hit and maybe a 60% hit on virtual memory, but it's worth it to me (I normally don't notice the difference).