From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10069 invoked by alias); 20 Dec 2005 06:51:46 -0000 Received: (qmail 10060 invoked by alias); 20 Dec 2005 06:51:45 -0000 Date: Tue, 20 Dec 2005 06:51:00 -0000 Message-ID: <20051220065145.10059.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: "yuri at tsoft dot com" 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/msg02094.txt.bz2 List-Id: ------- Comment #9 from yuri at tsoft dot com 2005-12-20 06:51 ------- Subject: Re: REGREGRESSION: SSE2 vectorized code is many times slower on 4.x.x than on 3.4.4 ----------------------------------- Using built-in specs. Configured with: FreeBSD/i386 system compiler Thread model: posix gcc version 3.4.4 [FreeBSD] 20050518 ----------------------------------- g++ -v (4.0.2) Using built-in specs. Target: i386-unknown-freebsd6.0 Configured with: ../gcc-4.0.2/configure --prefix=/usr/local/gcc-4.0.2 Thread model: posix gcc version 4.0.2 pinskia at gcc dot gnu dot org wrote: >------- Comment #8 from pinskia at gcc dot gnu dot org 2005-12-20 06:36 ------- >Can you show what the output of "gcc -v" for the 3.4 compiler and the 4.0 >compiler? > >This looks like just a different using arch by default. > >a Compiler compiled for i686 by default gives the good code but code compiled >for i386 give bad code. > > > > -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25500