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: Dynamic loading progress Date: Sun, 4 Oct 2015 13:19:54 -0700 Organization: UCLA Computer Science Department Message-ID: <561189EA.6000103@cs.ucla.edu> References: <87vbj8tow4.fsf@lifelogs.com> <87r3twtagf.fsf@lifelogs.com> <85siebl7ws.fsf@stephe-leake.org> <85a90ilwmm.fsf@stephe-leake.org> <83386a6f7z.fsf@gnu.org> <85h9upjz7v.fsf@stephe-leake.org> <83wq3k3kl4.fsf@gnu.org> <85bnkwil1c.fsf@stephe-leake.org> <83pp9cwky8.fsf@gnu.org> <85a90ggf2d.fsf@stephe-leake.org> <54E0A40F.5080603@dancol.org> <83sie7un20.fsf@gnu.org> <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> <56117C0E.2050206@cs.ucla.edu> <56117D15.1030501@dancol.org> <56118421.4030706@cs.ucla.edu> <561184A8.8060609@dancol.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 1443990014 19668 80.91.229.3 (4 Oct 2015 20:20:14 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 4 Oct 2015 20:20:14 +0000 (UTC) Cc: =?UTF-8?Q?Aur=c3=a9lien_Aptel?= , stephen_leake@stephe-leake.org, emacs-devel@gnu.org To: Daniel Colascione , Philipp Stephani , Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Oct 04 22:20:06 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 1ZiplN-00067o-3l for ged-emacs-devel@m.gmane.org; Sun, 04 Oct 2015 22:20:05 +0200 Original-Received: from localhost ([::1]:43588 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZiplM-00044k-GU for ged-emacs-devel@m.gmane.org; Sun, 04 Oct 2015 16:20:04 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51929) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZiplK-00044b-5C for emacs-devel@gnu.org; Sun, 04 Oct 2015 16:20:02 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZiplJ-0006pW-4e for emacs-devel@gnu.org; Sun, 04 Oct 2015 16:20:02 -0400 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:56037) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZiplE-0006mm-Qn; Sun, 04 Oct 2015 16:19:56 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 2437A160EDA; Sun, 4 Oct 2015 13:19:55 -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 ml118Ovkh9qB; Sun, 4 Oct 2015 13:19:54 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 683EE160EDE; Sun, 4 Oct 2015 13:19:54 -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 N4bz42AxvlrW; Sun, 4 Oct 2015 13:19:54 -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 339D1160EDA; Sun, 4 Oct 2015 13:19:54 -0700 (PDT) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 In-Reply-To: <561184A8.8060609@dancol.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:190905 Archived-At: Daniel Colascione wrote: > Can you really imagine a general-purpose machine with 128-bit words? I don't have to imagine it. I have one on my desk right now, running Ubuntu 15.04 on a Xeon E3-1225. If I take this program: __int128 mulbig (long a, long b) { __int128 aa = a; return aa * b; } and compile it with gcc -O2, I get the following machine instructions: mulbig: movq %rdi, %rax imulq %rsi ret and this yields a 128-bit value with the mathematically-correct answer (integer overflow is not possible for this example). Admittedly my desktop doesn't support 128-bit words as well as I'd like. But the support should be good enough for Emacs (of course, it should be enabled only on platforms that have it).