From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Suppressing native compilation (short and long term) Date: Wed, 28 Sep 2022 22:10:53 +0300 Message-ID: <83wn9ngvr6.fsf@gnu.org> References: <87ill8paw7.fsf@trouble.defaultvalue.org> <834jwrig5s.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="18530"; mail-complaints-to="usenet@ciao.gmane.io" Cc: rlb@defaultvalue.org, emacs-devel@gnu.org To: Andrea Corallo Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Sep 28 21:13:49 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 1odcVA-0004dy-Gt for ged-emacs-devel@m.gmane-mx.org; Wed, 28 Sep 2022 21:13:48 +0200 Original-Received: from localhost ([::1]:45414 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1odcV9-0002Xl-BF for ged-emacs-devel@m.gmane-mx.org; Wed, 28 Sep 2022 15:13:47 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:40976) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1odcSp-0000Nm-E8 for emacs-devel@gnu.org; Wed, 28 Sep 2022 15:11:23 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:38820) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1odcSp-00027l-2o; Wed, 28 Sep 2022 15:11:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=C9ywJVYusJ230G6wiarnSU6VuuWoeu/r+NA051FaNRI=; b=g0JWblIIK0O4 diiScSyTmE5x76+BruKJPKno/XA9SlNujHjB1XaaYb0xvubZjADfgmtSoiI+6fbCOYSTUXWDch8Tx V+8OI0OiXMMuxLDl5q0xr2sFCWDPo/fqCv0ngNtT2zK+eWQ1kZgHnyJuA7KiSTVD7K7QvgHfuZ/7w BsmD5jgTA8vyzLemF+wPpuwXYHGk2kF3/2cTFzATe6gNo36kL3ZEOyIjUXiIWfBXeAS2iJ4cILrna a+t2+u/6HHSF5SVuMK/+JyoV08sAzwjqaubfIo6uv5USxWebwSKCLXDTm0SURP5z+FWXXIGYnEcTk i3cAkgYh8+VGDLP9J3k4Gw==; Original-Received: from [87.69.77.57] (port=1352 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1odcSP-00063r-Ns; Wed, 28 Sep 2022 15:11:06 -0400 In-Reply-To: (message from Andrea Corallo on Wed, 28 Sep 2022 18:49:43 +0000) 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:296420 Archived-At: > From: Andrea Corallo > Cc: rlb@defaultvalue.org, emacs-devel@gnu.org > Date: Wed, 28 Sep 2022 18:49:43 +0000 > > Eli Zaretskii writes: > > >> From: Andrea Corallo > >> Cc: emacs-devel@gnu.org > >> Date: Wed, 28 Sep 2022 12:52:59 +0000 > >> > >> This is what `native-comp-deferred-compilation' does. Well except for > >> trampolines but this is extremly light as cpu/energy cost. > > > > I think if we want to allow people to turn off async compilation, we > > should provide a way to force native-comp-available-p to return nil. > > When that function returns nil, Emacs already does react correctly (or > > at least it's supposed to). > > Yes `native-comp-deferred-compilation' AFAIK does exactly this already, > `native-comp-available-p' is to check if the native compiler is > available (not necessarily the deferred/async mechanism). But then it should disable the trampolines as well, see startup.el.