From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11883 invoked by alias); 17 Nov 2013 12:27:37 -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 11855 invoked by uid 48); 17 Nov 2013 12:27:32 -0000 From: "janus at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/59121] [4.8/4.9 Regression] endless loop with -O2 -floop-parallelize-all Date: Sun, 17 Nov 2013 12:27:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 4.8.1 X-Bugzilla-Keywords: compile-time-hog X-Bugzilla-Severity: normal X-Bugzilla-Who: janus at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.8.3 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: 2013-11/txt/msg01573.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59121 --- Comment #9 from janus at gcc dot gnu.org --- (In reply to Richard Biener from comment #8) > -floop-parallelize-all ends up using GRAPHITE dependence analysis which is > what never finishes (is stuck in ISL). I'd say avoid it at all cost (as > the rest of GRAPHITE). If you're saying this is a case of WONTFIX and -floop-parallelize-all should not be used at all, maybe one should document the flag in the manual as 'experimental' (or 'broken' or whatever) ... ?