From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19491 invoked by alias); 18 Dec 2010 21:26:13 -0000 Received: (qmail 19481 invoked by uid 22791); 18 Dec 2010 21:26:13 -0000 X-SWARE-Spam-Status: No, hits=-2.9 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 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; Sat, 18 Dec 2010 21:26:09 +0000 From: "jgarzik at pobox dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/47000] [4.5 Regression] Failure to inline SSE intrinsics X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: major X-Bugzilla-Who: jgarzik at pobox dot com X-Bugzilla-Status: NEW 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 Date: Sat, 18 Dec 2010 21:26:00 -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 X-SW-Source: 2010-12/txt/msg02246.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47000 --- Comment #20 from Jeff Garzik 2010-12-18 21:25:46 UTC --- (In reply to comment #16) > I don't think it is a good idea to change inliner heuristics in 4.5 at this > point. If it is always a good idea to inline that function, it should be > __attribute__((always_inline)). I confirm that replacing 'inline' with '__attribute__((always_inline))' also resolves the regression. It is a bit disappointing to leave such a major performance diff (-26%!) in latest stable compiler release without resolution (if the decision is to leave the inliner alone).