From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Defending GCC considered futile Date: Wed, 11 Feb 2015 05:46:23 +0200 Message-ID: <83mw4l6rg0.fsf@gnu.org> References: <20150207202952.1042BC00A6@snark.thyrsus.com> <87wq3rocqb.fsf@uwakimon.sk.tsukuba.ac.jp> <20150209172445.290dc20e@jabberwock.cb.piermont.com> <83mw4m8mi8.fsf@gnu.org> <54D9C18B.7060302@dancol.org> <8361b992tc.fsf@gnu.org> <54DA4BCE.8030804@dancol.org> <83sied7eqi.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1423626421 17746 80.91.229.3 (11 Feb 2015 03:47:01 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 11 Feb 2015 03:47:01 +0000 (UTC) Cc: esr@snark.thyrsus.com, rms@gnu.org, perry@piermont.com, emacs-devel@gnu.org, stephen@xemacs.org, dancol@dancol.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Feb 11 04:46:52 2015 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1YLOGI-0006Yp-7N for ged-emacs-devel@m.gmane.org; Wed, 11 Feb 2015 04:46:50 +0100 Original-Received: from localhost ([::1]:42987 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YLOGH-00020I-4e for ged-emacs-devel@m.gmane.org; Tue, 10 Feb 2015 22:46:49 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:46589) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YLOG5-000202-6Q for emacs-devel@gnu.org; Tue, 10 Feb 2015 22:46:38 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YLOG1-0001pH-V6 for emacs-devel@gnu.org; Tue, 10 Feb 2015 22:46:37 -0500 Original-Received: from mtaout21.012.net.il ([80.179.55.169]:46171) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YLOG1-0001p9-N2; Tue, 10 Feb 2015 22:46:33 -0500 Original-Received: from conversion-daemon.a-mtaout21.012.net.il by a-mtaout21.012.net.il (HyperSendmail v2007.08) id <0NJL00K007ZL5D00@a-mtaout21.012.net.il>; Wed, 11 Feb 2015 05:46:32 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout21.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NJL00KSV95K6G10@a-mtaout21.012.net.il>; Wed, 11 Feb 2015 05:46:32 +0200 (IST) In-reply-to: X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: Solaris 10 X-Received-From: 80.179.55.169 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:182859 Archived-At: > From: Stefan Monnier > Cc: Daniel Colascione , esr@snark.thyrsus.com, > stephen@xemacs.org, perry@piermont.com, rms@gnu.org, > emacs-devel@gnu.org > Date: Tue, 10 Feb 2015 18:14:14 -0500 > > >> > > -Og > > I use -Og but still regularly see "optimized out". That's because DWARF cannot express the location. LLDB will hit the same problems when the LLVM optimiziers start optimizing well enough to compete with GCC. Back in GCC 2.8 days, I could compile with -O2 and never see any such problems.