From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: byte-opt.el addition - optimize list of compile-time constants Date: Wed, 08 Dec 2004 14:27:04 -0500 Message-ID: References: <87u0qxgn65.fsf@codesourcery.com> <878y88hazn.fsf@codesourcery.com> NNTP-Posting-Host: deer.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1102534066 23323 80.91.229.6 (8 Dec 2004 19:27:46 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 8 Dec 2004 19:27:46 +0000 (UTC) Cc: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Dec 08 20:27:41 2004 Return-path: Original-Received: from lists.gnu.org ([199.232.76.165]) by deer.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 1Cc7TQ-0000xb-00 for ; Wed, 08 Dec 2004 20:27:41 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.33) id 1Cc7dH-0002RK-Lw for ged-emacs-devel@m.gmane.org; Wed, 08 Dec 2004 14:37:51 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.33) id 1Cc7cv-0002RE-DC for emacs-devel@gnu.org; Wed, 08 Dec 2004 14:37:29 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.33) id 1Cc7cu-0002R1-Rn for emacs-devel@gnu.org; Wed, 08 Dec 2004 14:37:29 -0500 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.33) id 1Cc7cu-0002Qy-Od for emacs-devel@gnu.org; Wed, 08 Dec 2004 14:37:28 -0500 Original-Received: from [132.204.24.67] (helo=mercure.iro.umontreal.ca) by monty-python.gnu.org with esmtp (Exim 4.34) id 1Cc7Sw-0000gN-V2 for emacs-devel@gnu.org; Wed, 08 Dec 2004 14:27:11 -0500 Original-Received: from hidalgo.iro.umontreal.ca (hidalgo.iro.umontreal.ca [132.204.27.50]) by mercure.iro.umontreal.ca (Postfix) with ESMTP id B74758282A5; Wed, 8 Dec 2004 14:27:10 -0500 (EST) Original-Received: from asado.iro.umontreal.ca (asado.iro.umontreal.ca [132.204.24.84]) by hidalgo.iro.umontreal.ca (Postfix) with ESMTP id 2BA944AC672; Wed, 8 Dec 2004 14:27:05 -0500 (EST) Original-Received: by asado.iro.umontreal.ca (Postfix, from userid 20848) id 1A8CD8CA69; Wed, 8 Dec 2004 14:27:04 -0500 (EST) Original-To: Zack Weinberg In-Reply-To: <878y88hazn.fsf@codesourcery.com> (Zack Weinberg's message of "Wed, 08 Dec 2004 10:59:40 -0800") User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/21.3.50 (gnu/linux) X-DIRO-MailScanner-Information: Please contact the ISP for more information X-DIRO-MailScanner: Found to be clean X-DIRO-MailScanner-SpamCheck: n'est pas un polluriel, SpamAssassin (score=-4.386, requis 5, autolearn=not spam, AWL 0.51, BAYES_00 -4.90) X-MailScanner-From: monnier@iro.umontreal.ca X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: main.gmane.org gmane.emacs.devel:30880 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:30880 > I seriously wonder how much would break if this optimization were > implemented for 'list'. My suspicion is that people don't commonly > apply 'eq' to lists in the first place. Well, try it: (put 'list 'byte-optimizer 'byte-optimize-pure-func) (put 'list* 'byte-optimizer 'byte-optimize-pure-func) (put 'cons 'byte-optimizer 'byte-optimize-pure-func) (put 'append 'byte-optimizer 'byte-optimize-pure-func) -- Stefan