From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.devel Subject: Re: Making --with-wide-int the default Date: Fri, 16 Oct 2015 10:31:32 +0200 Message-ID: <87y4f3tdsr.fsf@fencepost.gnu.org> References: <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> <5620AF43.4050401@cs.ucla.edu> <83k2qn6xfm.fsf@gnu.org> <5620B4FA.1000804@cs.ucla.edu> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1444984314 15243 80.91.229.3 (16 Oct 2015 08:31:54 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 16 Oct 2015 08:31:54 +0000 (UTC) Cc: lekktu@gmail.com, Eli Zaretskii , emacs-devel@gnu.org To: Paul Eggert Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Oct 16 10:31:53 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 1Zn0Qb-0000Zj-8J for ged-emacs-devel@m.gmane.org; Fri, 16 Oct 2015 10:31:53 +0200 Original-Received: from localhost ([::1]:51619 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zn0QZ-000181-VF for ged-emacs-devel@m.gmane.org; Fri, 16 Oct 2015 04:31:52 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:42952) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zn0QM-00017w-3j for emacs-devel@gnu.org; Fri, 16 Oct 2015 04:31:38 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zn0QK-0000kC-Uz for emacs-devel@gnu.org; Fri, 16 Oct 2015 04:31:38 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:39024) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zn0QI-0000jD-7V; Fri, 16 Oct 2015 04:31:34 -0400 Original-Received: from localhost ([127.0.0.1]:52842 helo=lola) by fencepost.gnu.org with esmtp (Exim 4.82) (envelope-from ) id 1Zn0QH-0006WL-Dz; Fri, 16 Oct 2015 04:31:33 -0400 Original-Received: by lola (Postfix, from userid 1000) id C4181DF4F5; Fri, 16 Oct 2015 10:31:32 +0200 (CEST) In-Reply-To: <5620B4FA.1000804@cs.ucla.edu> (Paul Eggert's message of "Fri, 16 Oct 2015 01:27:38 -0700") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:4830:134:3::e 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:191723 Archived-At: Paul Eggert writes: > Eli Zaretskii wrote: >> Would you say it's safe to make this the default for Emacs 25? > > I'd say it's safe, yes. --with-wide-int assumes 64-bit int but since > we're requiring C99-or-later now this should be safe. And as you say, > if there are performance problems people can configure > --with-wide-int=no. I don't it's sensible to configure a non-native default turning everything into multiple-register operations and obliterating compact data structures matching the architecture's choices. -- David Kastrup