From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19966 invoked by alias); 20 Feb 2011 18:22:55 -0000 Received: (qmail 19958 invoked by uid 22791); 20 Feb 2011 18:22:55 -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; Sun, 20 Feb 2011 18:22:52 +0000 From: "cck0011 at yahoo dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/47825] SSE bitwise operations on floats work -g, fail -O3 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: cck0011 at yahoo dot com X-Bugzilla-Status: RESOLVED 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: Sun, 20 Feb 2011 18:57:00 -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: 2011-02/txt/msg02361.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47825 --- Comment #4 from cck0011 at yahoo dot com 2011-02-20 18:22:46 UTC --- (In reply to comment #3) > Probably the same on maskarray. You should also try to update GCC to > 4.3.5. Hi Richard, added to maskarray as well: no change in results. Adding option -fno-strict-aliasing fixes it as well. I'm confused: since _mm_store_ps explicitly copies into floatarray why is aliasing an issue? thanks!