From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11752 invoked by alias); 20 Dec 2005 06:55:23 -0000 Received: (qmail 11734 invoked by uid 48); 20 Dec 2005 06:55:21 -0000 Date: Tue, 20 Dec 2005 06:55:00 -0000 Message-ID: <20051220065521.11733.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug target/25500] REGREGRESSION: SSE2 vectorized code is many times slower on 4.x.x than on 3.4.4 In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "pinskia at gcc dot gnu dot org" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2005-12/txt/msg02095.txt.bz2 List-Id: ------- Comment #10 from pinskia at gcc dot gnu dot org 2005-12-20 06:55 ------- Oh, I looked a little more and yes it depends on the arch you are building for but only for 4.x. Since you are using SSE, you should add also -march=i686 or -march=k8 so that the code is also tuned for the processor you are using. Anyways the problem with i386 with 4.0 is really just PR 14295. -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- BugsThisDependsOn| |14295 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25500