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 12:28:10 +0200 Message-ID: <878u73t8ed.fsf@fencepost.gnu.org> References: <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> <87h9lrtb98.fsf@fencepost.gnu.org> <83y4f35dhd.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1444991317 28550 80.91.229.3 (16 Oct 2015 10:28:37 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 16 Oct 2015 10:28:37 +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 12:28:36 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 1Zn2FQ-0007Us-F0 for ged-emacs-devel@m.gmane.org; Fri, 16 Oct 2015 12:28:28 +0200 Original-Received: from localhost ([::1]:52554 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zn2FP-000792-QJ for ged-emacs-devel@m.gmane.org; Fri, 16 Oct 2015 06:28:27 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:32806) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zn2FD-000739-Nc for emacs-devel@gnu.org; Fri, 16 Oct 2015 06:28:17 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zn2FC-0000V7-U0 for emacs-devel@gnu.org; Fri, 16 Oct 2015 06:28:15 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:45261) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zn2FA-0000UB-GJ; Fri, 16 Oct 2015 06:28:12 -0400 Original-Received: from localhost ([127.0.0.1]:59079 helo=lola) by fencepost.gnu.org with esmtp (Exim 4.82) (envelope-from ) id 1Zn2F9-00054h-N3; Fri, 16 Oct 2015 06:28:12 -0400 Original-Received: by lola (Postfix, from userid 1000) id EC6F9E239A; Fri, 16 Oct 2015 12:28:10 +0200 (CEST) In-Reply-To: <83y4f35dhd.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 16 Oct 2015 13:12:14 +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:191738 Archived-At: Eli Zaretskii writes: >> From: David Kastrup >> Cc: lekktu@gmail.com, eggert@cs.ucla.edu, emacs-devel@gnu.org >> Date: Fri, 16 Oct 2015 11:26:27 +0200 >> >> > What is "non-native" about 'long long int'? >> >> Register lengths and opcodes. You need two registers for every >> operation, and several opcodes. > > Yes, and the compiler already implements that in the most efficient > way possible. And GMP makes use of that. "The most efficient way possible" is still less efficient than using 32bit. Particularly regarding storage efficiency. -- David Kastrup