From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Tom Tromey Newsgroups: gmane.emacs.devel Subject: Re: Emacs Lisp JIT Compiler Date: Sun, 19 Aug 2018 13:16:53 -0600 Message-ID: <87lg92qi8q.fsf@tromey.com> References: <87va8ej4o1.fsf@tromey.com> <87mutpiyz6.fsf@tromey.com> <701cd05f423e0c46595a3010f45414d0.squirrel@dancol.org> <520f536b5a603831c9a57a5f6f0978a2.squirrel@dancol.org> <83va8binu8.fsf@gnu.org> <87bma3i26m.fsf@tromey.com> <83in4aigs7.fsf@gnu.org> <87pnyeql0i.fsf@tromey.com> <83sh3advvf.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1534706556 16501 195.159.176.226 (19 Aug 2018 19:22:36 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sun, 19 Aug 2018 19:22:36 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1.50 (gnu/linux) Cc: eggert@cs.ucla.edu, Tom Tromey , dancol@dancol.org, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Aug 19 21:22:31 2018 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1frTHT-0004Bp-F3 for ged-emacs-devel@m.gmane.org; Sun, 19 Aug 2018 21:22:31 +0200 Original-Received: from localhost ([::1]:43898 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1frTJZ-0003B6-Sk for ged-emacs-devel@m.gmane.org; Sun, 19 Aug 2018 15:24:41 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35446) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1frTJO-0003B0-HO for emacs-devel@gnu.org; Sun, 19 Aug 2018 15:24:31 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1frTJL-0001Ut-Ex for emacs-devel@gnu.org; Sun, 19 Aug 2018 15:24:30 -0400 Original-Received: from gateway33.websitewelcome.com ([192.185.145.190]:32028) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1frTJL-0001Ug-AE for emacs-devel@gnu.org; Sun, 19 Aug 2018 15:24:27 -0400 Original-Received: from cm17.websitewelcome.com (cm17.websitewelcome.com [100.42.49.20]) by gateway33.websitewelcome.com (Postfix) with ESMTP id D23DE1A0CA8 for ; Sun, 19 Aug 2018 14:16:55 -0500 (CDT) Original-Received: from box5379.bluehost.com ([162.241.216.53]) by cmsmtp with SMTP id rTC3fPOyUPvAdrTC3fOXze; Sun, 19 Aug 2018 14:16:55 -0500 X-Authority-Reason: nr=8 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tromey.com; s=default; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=kJ6j1wC6cKZMDaTSsQ4zetCor3O5zN51eVyNoQa0jSY=; b=w7wH3GLxrqWLDamokAGxgAQnZi 6P6Q59R5AaQ6Rpvl6b6/TQdgmC0t7Tf2nzfk8jUIKP756qd+WyvTjZ1Ei54388FvjmICQ556FT6Zm W7/XBSabjeQE8jMGvMA7JOO/D; Original-Received: from 75-166-85-72.hlrn.qwest.net ([75.166.85.72]:42770 helo=bapiya) by box5379.bluehost.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91) (envelope-from ) id 1frTC3-0039NF-Es; Sun, 19 Aug 2018 14:16:55 -0500 X-Attribution: Tom In-Reply-To: <83sh3advvf.fsf@gnu.org> (Eli Zaretskii's message of "Sun, 19 Aug 2018 22:00:52 +0300") X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - box5379.bluehost.com X-AntiAbuse: Original Domain - gnu.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - tromey.com X-BWhitelist: no X-Source-IP: 75.166.85.72 X-Source-L: No X-Exim-ID: 1frTC3-0039NF-Es X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 75-166-85-72.hlrn.qwest.net (bapiya) [75.166.85.72]:42770 X-Source-Auth: tom+tromey.com X-Email-Count: 3 X-Source-Cap: ZWx5bnJvYmk7ZWx5bnJvYmk7Ym94NTM3OS5ibHVlaG9zdC5jb20= X-Local-Domain: yes X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 192.185.145.190 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.devel:228696 Archived-At: >>>>> "Eli" == Eli Zaretskii writes: >> From: Tom Tromey >> Cc: "Eli Zaretskii" , emacs-devel@gnu.org, Tom Tromey , eggert@cs.ucla.edu >> Date: Sun, 19 Aug 2018 12:17:01 -0600 >> >> True, though it's worth noting that libjit doesn't really have >> optimization passes to speak of. Eli> There's jit_optimize, although AFAIU, jit_compile already performs Eli> optimizations. Yeah. jit_optimize just does some CFG cleanups. And the JIT does some constant folding I believe; but nothing more serious. libjit is a nice, clean design. Unfortunately its development seems to have been interrupted, so consequently some parts aren't really fleshed out. Tom