From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: pure-fns in byte-opt.el Date: Wed, 26 Jul 2017 22:46:23 -0400 Message-ID: References: <20170725020650.GA12601@holos.localdomain> <20170726010000.GA14292@holos.localdomain> <83o9s75kus.fsf@gnu.org> <20170727023608.GA1895@holos.localdomain> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1501124337 21067 195.159.176.226 (27 Jul 2017 02:58:57 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 27 Jul 2017 02:58:57 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Jul 27 04:58:54 2017 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 1daZ0m-0004pz-Kt for ged-emacs-devel@m.gmane.org; Thu, 27 Jul 2017 04:58:52 +0200 Original-Received: from localhost ([::1]:40939 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1daZ0k-0003iU-1O for ged-emacs-devel@m.gmane.org; Wed, 26 Jul 2017 22:58:50 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56940) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1daYos-00015C-VH for emacs-devel@gnu.org; Wed, 26 Jul 2017 22:46:35 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1daYop-0002Ba-Pl for emacs-devel@gnu.org; Wed, 26 Jul 2017 22:46:35 -0400 Original-Received: from [195.159.176.226] (port=55498 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1daYop-0002Aq-J6 for emacs-devel@gnu.org; Wed, 26 Jul 2017 22:46:31 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1daYoh-0001m3-IQ for emacs-devel@gnu.org; Thu, 27 Jul 2017 04:46:23 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 19 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:RpWD0as0Hh73dELqzq4QbXkNIi4= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 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:217065 Archived-At: > (let ((pure-fns > - '(concat symbol-name regexp-opt regexp-quote string-to-syntax))) > + '(concat symbol-name regexp-opt regexp-quote string-to-syntax > + make-vector))) Ah, now that makes a lot more sense: make-vector is much less pure than string-to-char. The above will cause the compiler to replace (make-vector 2 ?a) with [?a ?a] so you end with a single immediate vector being re-used over and over, instead of having a new vector created each time. Stefan