From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19804 invoked by alias); 17 Aug 2012 08:10:26 -0000 Received: (qmail 19780 invoked by uid 22791); 17 Aug 2012 08:10:23 -0000 X-SWARE-Spam-Status: No, hits=-4.2 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED,TW_FW,TW_ZJ 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, 17 Aug 2012 08:10:10 +0000 From: "ubizjak at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/54294] [4.8 Regression]: [alpha] Bootstrap comparison failure due to fwprop handling of debug insns Date: Fri, 17 Aug 2012 08:10:00 -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: build X-Bugzilla-Severity: normal X-Bugzilla-Who: ubizjak at gmail dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- 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: 2012-08/txt/msg01132.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54294 --- Comment #3 from Uros Bizjak 2012-08-17 08:10:07 UTC --- (In reply to comment #1) > Created attachment 28040 [details] > Preprocessed source of the object file that triggers comparison failure > > ~/gcc-build/stage1-gcc/xgcc -B ~/gcc-build/stage1-gcc -O2 -fno-exceptions > -fno-rtti -fno-common -fcompare-debug cprop.ii > xgcc: error: cprop.ii: -fcompare-debug failure (length) Adding -fno-forward-propagate to the above flags fixes compare-debug failure.