From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Tom Tromey Newsgroups: gmane.emacs.devel Subject: Re: Inefficiency in Bgotoifnil byte-code instruction Date: Mon, 02 Jul 2012 08:08:01 -0600 Message-ID: <87lij2z266.fsf@fleche.redhat.com> References: <87k3yq2htz.fsf@fleche.redhat.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1341238101 22058 80.91.229.3 (2 Jul 2012 14:08:21 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 2 Jul 2012 14:08:21 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Jul 02 16:08:18 2012 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 1SlhIV-00020x-LV for ged-emacs-devel@m.gmane.org; Mon, 02 Jul 2012 16:08:15 +0200 Original-Received: from localhost ([::1]:48199 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SlhIU-0003yX-Gj for ged-emacs-devel@m.gmane.org; Mon, 02 Jul 2012 10:08:14 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:55089) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SlhIR-0003yF-Ly for emacs-devel@gnu.org; Mon, 02 Jul 2012 10:08:12 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SlhIL-0003PS-CN for emacs-devel@gnu.org; Mon, 02 Jul 2012 10:08:11 -0400 Original-Received: from mx1.redhat.com ([209.132.183.28]:43249) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SlhIL-0003Ov-46 for emacs-devel@gnu.org; Mon, 02 Jul 2012 10:08:05 -0400 Original-Received: from int-mx12.intmail.prod.int.phx2.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.25]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q62E84Yh003221 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Mon, 2 Jul 2012 10:08:04 -0400 Original-Received: from barimba (ovpn01.gateway.prod.ext.phx2.redhat.com [10.5.9.1]) by int-mx12.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id q62E82Mw018844 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Mon, 2 Jul 2012 10:08:03 -0400 X-Attribution: Tom In-Reply-To: (John Wiegley's message of "Sun, 01 Jul 2012 22:51:36 -0500") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux) X-Scanned-By: MIMEDefang 2.68 on 10.5.11.25 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 209.132.183.28 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:151350 Archived-At: Tom> Maybe it is finally time to push in the token-threading patch. John> What does that do? It is a performance optimization that changes the emacs bytecode interpreter to use token threading: http://en.wikipedia.org/wiki/Threaded_code#Token_threading The old patch is here, I haven't updated it yet: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=4470 Tom