From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 16323 invoked by alias); 1 Aug 2012 09:27:07 -0000 Received: (qmail 16309 invoked by uid 22791); 1 Aug 2012 09:27:06 -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; Wed, 01 Aug 2012 09:26:53 +0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/54130] Recognize builtins with bool return type Date: Wed, 01 Aug 2012 09:27:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org 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/msg00013.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54130 --- Comment #10 from Richard Guenther 2012-08-01 09:26:53 UTC --- (In reply to comment #9) > I realize that several (not all) of the things discussed here assume that > functions returning bool and int are binary compatible, which is likely true on > most platforms but there might be exceptions. It's not true on x86_64 - return values are not extended to word_mode thus you may have garbage in the upper parts of %eax for bool.