From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12900 invoked by alias); 27 Aug 2013 17:03:36 -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 12839 invoked by uid 48); 27 Aug 2013 17:03:33 -0000 From: "bernd.edlinger at hotmail dot de" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/56933] [4.9 Regression] Vectorizer missing read-write dependency for interleaved accesses Date: Tue, 27 Aug 2013 17:03:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 4.9.0 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: bernd.edlinger at hotmail dot de X-Bugzilla-Status: RESOLVED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.9.0 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: 2013-08/txt/msg01399.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56933 Bernd Edlinger changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bernd.edlinger at hotmail dot de --- Comment #4 from Bernd Edlinger --- The test case gcc.dg/vect/pr56933.c fails on a pentium II, because of invalid instruction. A fairly obvious fix (which works for me) would be: --- gcc/testsuite/gcc.dg/vect/pr56933.c.jj 2013-04-15 16:08:41.000000000 +0200 +++ gcc/testsuite/gcc.dg/vect/pr56933.c 2013-08-22 21:12:19.000000000 +0200 @@ -1,4 +1,5 @@ /* { dg-do run } */ +/* { dg-require-effective-target sse2_runtime } */ extern void abort (void); void __attribute__((noinline,noclone))