From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7298 invoked by alias); 28 Nov 2004 20:30:42 -0000 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 Received: (qmail 7279 invoked by uid 48); 28 Nov 2004 20:30:36 -0000 Date: Sun, 28 Nov 2004 20:30:00 -0000 From: "ebotcazou at gcc dot gnu dot org" To: gcc-bugs@gcc.gnu.org Message-ID: <20041128203034.18707.ebotcazou@gcc.gnu.org> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug c/18707] New: Performance regression at -O2 with gzip X-Bugzilla-Reason: CC X-SW-Source: 2004-11/txt/msg03503.txt.bz2 List-Id: GCC 4.0.0pre generates worse code than GCC 3.4.4pre at -O2 for gzip 1.2.4 on UltraSPARC III. I've also included Sun ONE Studio 8 as a comparison point. 32-bit GCC vs Sun ONE Studio 8 CC: cc: "-fast -xarch=v8plusb -xchip=ultra3" gcc: "-O2 -mcpu=ultrasparc3" -rwxrwxr-x 1 eric eric 72464 Nov 28 13:08 gzip33 -rwxrwxr-x 1 eric eric 71444 Nov 28 13:09 gzip34 -rwxrwxr-x 1 eric eric 71904 Nov 28 13:10 gzip40 -rwxrwxr-x 1 eric eric 118316 Nov 28 13:42 gzipcc ./gzip33 gcc.tar 28.99s user 0.78s system 98% cpu 30.343 total ./gzip33 gcc.tar 29.03s user 0.64s system 98% cpu 29.989 total ./gzip33 gcc.tar 29.01s user 0.64s system 98% cpu 29.994 total ./gzip34 gcc.tar 24.24s user 0.70s system 98% cpu 25.383 total ./gzip34 gcc.tar 24.29s user 0.65s system 98% cpu 25.296 total ./gzip34 gcc.tar 24.30s user 0.64s system 98% cpu 25.231 total ./gzip40 gcc.tar 24.76s user 0.63s system 98% cpu 25.737 total ./gzip40 gcc.tar 24.75s user 0.63s system 98% cpu 25.668 total ./gzip40 gcc.tar 24.75s user 0.58s system 98% cpu 25.696 total ./gzipcc gcc.tar 24.53s user 0.99s system 95% cpu 26.663 total ./gzipcc gcc.tar 24.45s user 0.73s system 98% cpu 25.476 total ./gzipcc gcc.tar 24.51s user 0.65s system 98% cpu 25.513 total 64-bit GCC vs Sun ONE Studio 8 CC: cc: "-fast -xarch=v9b -xchip=ultra3" gcc: "-O2 -mcpu=ultrasparc3" -rwxrwxr-x 1 eric eric 109336 Nov 28 12:56 gzip33 -rwxrwxr-x 1 eric eric 104504 Nov 28 12:57 gzip34 -rwxrwxr-x 1 eric eric 105048 Nov 28 12:59 gzip40 -rwxrwxr-x 1 eric eric 149120 Nov 28 13:45 gzipcc ./gzip33 gcc.tar 33.54s user 0.65s system 99% cpu 34.458 total ./gzip33 gcc.tar 33.40s user 0.64s system 99% cpu 34.154 total ./gzip33 gcc.tar 33.45s user 0.54s system 99% cpu 34.101 total ./gzip34 gcc.tar 28.54s user 0.71s system 99% cpu 29.365 total ./gzip34 gcc.tar 28.64s user 0.60s system 99% cpu 29.345 total ./gzip34 gcc.tar 28.78s user 0.43s system 99% cpu 29.295 total ./gzip40 gcc.tar 30.77s user 0.48s system 99% cpu 31.369 total ./gzip40 gcc.tar 30.51s user 0.72s system 99% cpu 31.367 total ./gzip40 gcc.tar 30.65s user 0.62s system 99% cpu 31.378 total ./gzipcc gcc.tar 26.67s user 0.83s system 98% cpu 27.840 total ./gzipcc gcc.tar 26.69s user 0.67s system 99% cpu 27.438 total ./gzipcc gcc.tar 26.58s user 0.75s system 99% cpu 27.457 total -- Summary: Performance regression at -O2 with gzip Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: ebotcazou at gcc dot gnu dot org CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: sparc*-*-* GCC host triplet: sparc*-*-* GCC target triplet: sparc*-*-* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18707