From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 29723 invoked by alias); 10 Jan 2013 17:42:29 -0000 Received: (qmail 29636 invoked by uid 22791); 10 Jan 2013 17:42:27 -0000 X-SWARE-Spam-Status: No, hits=-5.2 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,KHOP_RCVD_TRUST,KHOP_THREADED,RCVD_IN_DNSWL_LOW,RCVD_IN_HOSTKARMA_YE X-Spam-Check-By: sourceware.org Received: from mail-vc0-f170.google.com (HELO mail-vc0-f170.google.com) (209.85.220.170) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 10 Jan 2013 17:42:22 +0000 Received: by mail-vc0-f170.google.com with SMTP id fl11so598132vcb.1 for ; Thu, 10 Jan 2013 09:42:21 -0800 (PST) Received: by 10.220.219.204 with SMTP id hv12mr89779898vcb.71.1357839741340; Thu, 10 Jan 2013 09:42:21 -0800 (PST) MIME-Version: 1.0 Received: by 10.58.215.38 with HTTP; Thu, 10 Jan 2013 09:41:40 -0800 (PST) In-Reply-To: <20130110173143.GD20218@redhat.com> References: <20130110173143.GD20218@redhat.com> From: Steven Bosscher Date: Thu, 10 Jan 2013 17:42:00 -0000 Message-ID: Subject: Re: [PATCH] Fix PR55833 + cheaper checking To: Marek Polacek Cc: GCC Patches , Zdenek Dvorak , Richard Guenther Content-Type: text/plain; charset=ISO-8859-1 X-IsSubscribed: yes Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org X-SW-Source: 2013-01/txt/msg00560.txt.bz2 On Thu, Jan 10, 2013 at 6:31 PM, Marek Polacek wrote: > + /* We changed the CFG. Recompute irreducible BBs and edges. */ > + mark_irreducible_loops (); This is a very expensive fix for a really unusual situation. I don't think this is the right thing to do... Ciao! Steven