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 11:26:27 +0200 Message-ID: <87h9lrtb98.fsf@fencepost.gnu.org> References: <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> <87y4f3tdsr.fsf@fencepost.gnu.org> <83a8rj6uu5.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1444987907 7161 80.91.229.3 (16 Oct 2015 09:31:47 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 16 Oct 2015 09:31:47 +0000 (UTC) Cc: lekktu@gmail.com, eggert@cs.ucla.edu, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Oct 16 11:31:46 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 1Zn1MU-0000vg-AF for ged-emacs-devel@m.gmane.org; Fri, 16 Oct 2015 11:31:42 +0200 Original-Received: from localhost ([::1]:52148 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zn1MT-0006E6-EZ for ged-emacs-devel@m.gmane.org; Fri, 16 Oct 2015 05:31:41 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:37650) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zn1HU-0006MM-93 for emacs-devel@gnu.org; Fri, 16 Oct 2015 05:26:33 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zn1HT-0007bM-IH for emacs-devel@gnu.org; Fri, 16 Oct 2015 05:26:32 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:41622) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zn1HQ-0007Yn-Jn; Fri, 16 Oct 2015 05:26:28 -0400 Original-Received: from localhost ([127.0.0.1]:55440 helo=lola) by fencepost.gnu.org with esmtp (Exim 4.82) (envelope-from ) id 1Zn1HP-0002ps-Ra; Fri, 16 Oct 2015 05:26:28 -0400 Original-Received: by lola (Postfix, from userid 1000) id 3C757E239A; Fri, 16 Oct 2015 11:26:27 +0200 (CEST) In-Reply-To: <83a8rj6uu5.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 16 Oct 2015 12:12:02 +0300") 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:191730 Archived-At: Eli Zaretskii writes: >> From: David Kastrup >> Cc: Eli Zaretskii , lekktu@gmail.com, emacs-devel@gnu.org >> Date: Fri, 16 Oct 2015 10:31:32 +0200 >> >> 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. > > We only use 64-bit types in EMACS_INT, i.e. variables that reference > buffer and string positions. All the rest is kept intact. > > What is "non-native" about 'long long int'? Register lengths and opcodes. You need two registers for every operation, and several opcodes. -- David Kastrup