From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 3990 invoked by alias); 1 Jun 2012 16:47:09 -0000 Received: (qmail 3979 invoked by uid 22791); 1 Jun 2012 16:47:08 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 01 Jun 2012 16:46:55 +0000 From: "aldyh at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/51771] trans-mem: abnormal edges get lost or corrupted Date: Fri, 01 Jun 2012 16:47:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: rtl-optimization X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: aldyh 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: 4.8.0 X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 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 X-SW-Source: 2012-06/txt/msg00058.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51771 --- Comment #6 from Aldy Hernandez 2012-06-01 16:46:27 UTC --- Created attachment 27543 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27543 Proposed patch by Richard Henderson-- untested This is an old, untested patch from rth that attempts to fix the problem without the returns-twice hack. There is some overlap with Patrick Marlier's attempt here: http://gcc.gnu.org/ml/gcc/2012-01/msg00099.html Patch provided here so we don't have to reanalyze everything if/when we revisit this issue.