From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31710 invoked by alias); 7 Feb 2008 10:30:26 -0000 Received: (qmail 31377 invoked by uid 48); 7 Feb 2008 10:29:44 -0000 Date: Thu, 07 Feb 2008 10:30:00 -0000 Message-ID: <20080207102944.31376.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug c++/35117] Vectorization on power PC In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "rguenth at gcc dot gnu dot org" 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: 2008-02/txt/msg00790.txt.bz2 ------- Comment #1 from rguenth at gcc dot gnu dot org 2008-02-07 10:29 ------- The testcase looks completely memory bound. Does the compiler tell you it does vectorization at all? Have you tried without -fprefetch-loop-arrays (with todays HW prefetchers and the simple access patterns it's probably not a win here). -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35117