From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10824 invoked by alias); 7 Dec 2013 09:52:03 -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 10785 invoked by uid 55); 7 Dec 2013 09:51:59 -0000 From: "rguenther at suse dot de" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/59409] [4.9 Regression] 253.perlbmk in SPEC CPU 2K is miscompiled Date: Sat, 07 Dec 2013 09:52:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 4.9.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenther at suse dot de 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/msg00589.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59409 --- Comment #7 from rguenther at suse dot de --- "hjl.tools at gmail dot com" wrote: >http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59409 > >--- Comment #3 from H.J. Lu --- >slpeel_tree_peel_loop_to_edge has comments: > > The first guard is: > if (FIRST_NITERS == 0) then skip the first loop, > and go directly to the second loop. > >This is removed by r205730. It's implemented in terms of scalar loop iterations (latch execution count).