From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Ideal performance of ELisp Date: Wed, 17 Aug 2022 18:18:57 -0400 Message-ID: References: <83a68dti6w.fsf@gnu.org> <874jykzvx9.fsf@yahoo.com> <83fsi4sttn.fsf@gnu.org> <838rnws5c7.fsf@gnu.org> <838rntocb8.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="39847"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: Lynn Winebarger , Eli Zaretskii , Po Lu , Alan Mackenzie , emacs-devel , Yuan Fu To: Mattias =?windows-1252?Q?Engdeg=E5rd?= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Aug 18 00:19:48 2022 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oORO7-000A9B-2A for ged-emacs-devel@m.gmane-mx.org; Thu, 18 Aug 2022 00:19:47 +0200 Original-Received: from localhost ([::1]:33472 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oORO5-0001Lm-G3 for ged-emacs-devel@m.gmane-mx.org; Wed, 17 Aug 2022 18:19:45 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:49718) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oORNR-0000fV-GB for emacs-devel@gnu.org; Wed, 17 Aug 2022 18:19:05 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:38730) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oORNN-0000LD-Tt; Wed, 17 Aug 2022 18:19:04 -0400 Original-Received: from pmg2.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 38F71807D5; Wed, 17 Aug 2022 18:18:59 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 0C7CB80767; Wed, 17 Aug 2022 18:18:58 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1660774738; bh=TZMFomo52rLS5pNwXoubvwv/FmlwTAxbrCRcVx0TDZ0=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=iUhCQZQKBfOtKpYnJ0KU+auyb0GB/OpLH7MSioBxHY1WoqunDEYfkXh7SVSsiN6Ns IsGyIxy9gfR4ulBwqmz0Mjk1OihJj9pd4y2fCktJrnFJHL1tT4/aDfey3Bzd58h5+l 74n7LOAPzFheR0wjFTLCICXpLkyAnUEclPWUqitdvSHCoNjuA3IcNevCC82BvBsXXk WHvpZ8a5zlUMqOdSd/P0coIh5pOOtX/n9Esfh907xhRLM4Mzazk0VmSzB5Me1m7kVp U4Skc2rT/fm477Ju0hDQbxEgMdRrt1Z2UJxOByn7r9Z5gSp2dp+ZJNaLZ/TBimowPG LjoCz9jPGttJg== Original-Received: from lechazo (lechon.iro.umontreal.ca [132.204.27.242]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id E7ECB120281; Wed, 17 Aug 2022 18:18:57 -0400 (EDT) In-Reply-To: ("Mattias =?windows-1252?Q?Engdeg=E5rd=22's?= message of "Wed, 17 Aug 2022 16:19:08 +0200") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:293575 Archived-At: Mattias Engdeg=E5rd [2022-08-17 16:19:08] wrote: > 17 aug. 2022 kl. 16.04 skrev Stefan Monnier : >> IIRC the limitation is only in the size of relative jumps, so we might >> be able to fix it just by adding a new "longbranch" instruction, > All bytecode jumps are 16-bit absolute. Oh well. > It is something we would like to change; relative jumps would make the > interpreter faster. Sounds like it would break backward compatibility, tho :-( We can increase the range fairly easily if 16bit is not enough, tho. E.g. we can just use the destination 65535 as a flag to indicate that the next 4 bytes contain a 32bit destination. Stefan