From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.devel Subject: Re: Regexp bytecode disassembler Date: Fri, 20 Mar 2020 13:58:15 +0100 Message-ID: <874kuj89p4.fsf@igel.home> References: <4201DF24-BCC4-4C08-9857-38207B7C10B4@acm.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="27818"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.90 (gnu/linux) Cc: emacs-devel To: Mattias =?utf-8?Q?Engdeg=C3=A5rd?= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Mar 20 13:58:58 2020 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 1jFHEm-00077b-Rs for ged-emacs-devel@m.gmane-mx.org; Fri, 20 Mar 2020 13:58:56 +0100 Original-Received: from localhost ([::1]:52720 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jFHEl-0003d2-UU for ged-emacs-devel@m.gmane-mx.org; Fri, 20 Mar 2020 08:58:55 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:36220) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jFHEE-00032t-2E for emacs-devel@gnu.org; Fri, 20 Mar 2020 08:58:23 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jFHEC-00076r-S4 for emacs-devel@gnu.org; Fri, 20 Mar 2020 08:58:21 -0400 Original-Received: from mail-out.m-online.net ([212.18.0.10]:55713) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jFHEC-00075o-Lx for emacs-devel@gnu.org; Fri, 20 Mar 2020 08:58:20 -0400 Original-Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 48kP2x2vCdz1tBx5; Fri, 20 Mar 2020 13:58:17 +0100 (CET) Original-Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 48kP2x1RHWz1qrbY; Fri, 20 Mar 2020 13:58:17 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Original-Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id TLlk5SjvdUkn; Fri, 20 Mar 2020 13:58:16 +0100 (CET) X-Auth-Info: J5Jkfvu7RCozPWDS46D1QI3TGMYiSp5iu7ObHd739SboEqC0DsFVEdd9ljhGXYVm Original-Received: from igel.home (ppp-46-244-167-235.dynamic.mnet-online.de [46.244.167.235]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Fri, 20 Mar 2020 13:58:16 +0100 (CET) Original-Received: by igel.home (Postfix, from userid 1000) id E3E0F2C021C; Fri, 20 Mar 2020 13:58:15 +0100 (CET) X-Yow: I'm having a tax-deductible experience! I need an energy crunch!! In-Reply-To: <4201DF24-BCC4-4C08-9857-38207B7C10B4@acm.org> ("Mattias =?utf-8?Q?Engdeg=C3=A5rd=22's?= message of "Fri, 20 Mar 2020 13:27:35 +0100") X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 212.18.0.10 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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:245601 Archived-At: On M=C3=A4r 20 2020, Mattias Engdeg=C3=A5rd wrote: > + (while (< i len) > + (let* ((opcode (aref bc i)) > + (entry-and-size > + (pcase opcode > + (0 (cons 'no-op 1)) > + (1 (cons 'succeed 1)) This loop would create less garbage if you used '(no-op . 1) instead of (cons 'no-op 1). Andreas. --=20 Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint =3D 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC= 1 "And now for something completely different."