From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 16670 invoked by alias); 20 Dec 2013 13:29:16 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 16634 invoked by uid 48); 20 Dec 2013 13:29:12 -0000 From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug testsuite/59494] [4.9 Regression] FAIL: gfortran.dg/vect/fast-math-mgrid-resid.f scan-tree-dump-times optimized "vect_[^\\n]*\\+ " 13 Date: Fri, 20 Dec 2013 13:29:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: testsuite X-Bugzilla-Version: 4.9.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.9.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2013-12/txt/msg01942.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59494 --- Comment #3 from Jakub Jelinek --- True, I guess adding -mtune=generic doesn't hurt though, it will be still broken with --target_board=unix/-mtune=core2 or similar testing, but at least it will FAIL less often. For core* tuning the difference is e.g. in reassoc (different reassoc widths, fairly recent change), and starting with probably r160636 different IVopts decisions based on different costs. I believe that is the only reason for the different number of vector additions.