From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 44940 invoked by alias); 25 Aug 2015 12:58:55 -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 44854 invoked by uid 48); 25 Aug 2015 12:58:50 -0000 From: "segher at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/67317] [x86] Silly code generation for _addcarry_u32/_addcarry_u64 Date: Tue, 25 Aug 2015 12:58:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 5.2.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: minor X-Bugzilla-Who: segher at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc 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: 2015-08/txt/msg01758.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67317 Segher Boessenkool changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |segher at gcc dot gnu.org --- Comment #3 from Segher Boessenkool --- These things would normally be taken care of by combine, but combine of course does not know what the UNSPEC_ADD_CARRY's mean. Does this need to be an unspec at all?