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: Compilation to native Date: 12 Apr 2004 16:57:35 -0400 Sender: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Message-ID: References: <87eks0654s.fsf@sno.mundell.ukfsn.org> <87n06bp4ng.fsf@sno.mundell.ukfsn.org> <877jxccutf.fsf@sno.mundell.ukfsn.org> <87k712gesk.fsf@sno.mundell.ukfsn.org> <87k70lhrsq.fsf@sno.mundell.ukfsn.org> NNTP-Posting-Host: deer.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1081804613 14698 80.91.224.253 (12 Apr 2004 21:16:53 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Mon, 12 Apr 2004 21:16:53 +0000 (UTC) Cc: rms@gnu.org, emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Mon Apr 12 23:16:38 2004 Return-path: Original-Received: from quimby.gnus.org ([80.91.224.244]) by deer.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 1BD8nF-0000RL-00 for ; Mon, 12 Apr 2004 23:16:37 +0200 Original-Received: from monty-python.gnu.org ([199.232.76.173]) by quimby.gnus.org with esmtp (Exim 3.35 #1 (Debian)) id 1BD8nF-0005RT-00 for ; Mon, 12 Apr 2004 23:16:37 +0200 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.30) id 1BD7oF-0002Sz-3e for emacs-devel@quimby.gnus.org; Mon, 12 Apr 2004 16:13:35 -0400 Original-Received: from list by monty-python.gnu.org with tmda-scanned (Exim 4.30) id 1BD7ni-0002Qy-AX for emacs-devel@gnu.org; Mon, 12 Apr 2004 16:13:02 -0400 Original-Received: from mail by monty-python.gnu.org with spam-scanned (Exim 4.30) id 1BD7ng-0002ON-0H for emacs-devel@gnu.org; Mon, 12 Apr 2004 16:13:00 -0400 Original-Received: from [199.232.41.8] (helo=mx20.gnu.org) by monty-python.gnu.org with esmtp (TLSv1:DES-CBC3-SHA:168) (Exim 4.30) id 1BD7mk-0006uN-Vb; Mon, 12 Apr 2004 16:12:03 -0400 Original-Received: from [206.47.199.141] (helo=simmts12-srv.bellnexxia.net) by mx20.gnu.org with esmtp (Exim 4.30) id 1BD8Uv-0001WD-FI; Mon, 12 Apr 2004 16:57:41 -0400 Original-Received: from empanada.local ([67.71.32.91]) by simmts12-srv.bellnexxia.net (InterMail vM.5.01.06.05 201-253-122-130-105-20030824) with ESMTP id <20040412205736.CWKL25455.simmts12-srv.bellnexxia.net@empanada.local>; Mon, 12 Apr 2004 16:57:36 -0400 Original-Received: by empanada.local (Postfix, from userid 502) id 7B598157156; Mon, 12 Apr 2004 16:57:36 -0400 (EDT) Original-To: Matthew Mundell In-Reply-To: <87k70lhrsq.fsf@sno.mundell.ukfsn.org> Original-Lines: 13 User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.4 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Xref: main.gmane.org gmane.emacs.devel:21537 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:21537 > This optimisation more than doubles the speed of the generated > function. The optimisation adds two new byte operations. As a start > the new operations always take parameters that are four bytes wide. I > think the loading of these four bytes is the cause of the slower byte > interpretation. I don't understand. Could you give us more info about what those new byte ops are and what they're used for (and maybe why you think they make things slower in the byte-interpreter, tho I should be able to figure that out on my own at that point). Stefan