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* [Bug c/18707] New: Performance regression at -O2 with gzip @ 2004-11-28 20:30 ebotcazou at gcc dot gnu dot org 2004-11-28 20:32 ` [Bug regression/18707] [4.0 Regression] " pinskia at gcc dot gnu dot org ` (4 more replies) 0 siblings, 5 replies; 6+ messages in thread From: ebotcazou at gcc dot gnu dot org @ 2004-11-28 20:30 UTC (permalink / raw) To: gcc-bugs 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 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug regression/18707] [4.0 Regression] Performance regression at -O2 with gzip 2004-11-28 20:30 [Bug c/18707] New: Performance regression at -O2 with gzip ebotcazou at gcc dot gnu dot org @ 2004-11-28 20:32 ` pinskia at gcc dot gnu dot org 2004-11-29 11:06 ` [Bug tree-optimization/18707] " ebotcazou at gcc dot gnu dot org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-11-28 20:32 UTC (permalink / raw) To: gcc-bugs -- What |Removed |Added ---------------------------------------------------------------------------- Component|c |regression Keywords| |missed-optimization Summary|Performance regression at - |[4.0 Regression] Performance |O2 with gzip |regression at -O2 with gzip Target Milestone|--- |4.0.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18707 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/18707] [4.0 Regression] Performance regression at -O2 with gzip 2004-11-28 20:30 [Bug c/18707] New: Performance regression at -O2 with gzip ebotcazou at gcc dot gnu dot org 2004-11-28 20:32 ` [Bug regression/18707] [4.0 Regression] " pinskia at gcc dot gnu dot org @ 2004-11-29 11:06 ` ebotcazou at gcc dot gnu dot org 2004-11-29 19:25 ` pinskia at gcc dot gnu dot org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: ebotcazou at gcc dot gnu dot org @ 2004-11-29 11:06 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From ebotcazou at gcc dot gnu dot org 2004-11-29 11:06 ------- The problem comes from t27.ch, at least in 32-bit mode. -- What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |ebotcazou at gcc dot gnu dot |dot org |org Status|UNCONFIRMED |ASSIGNED Component|regression |tree-optimization http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18707 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/18707] [4.0 Regression] Performance regression at -O2 with gzip 2004-11-28 20:30 [Bug c/18707] New: Performance regression at -O2 with gzip ebotcazou at gcc dot gnu dot org 2004-11-28 20:32 ` [Bug regression/18707] [4.0 Regression] " pinskia at gcc dot gnu dot org 2004-11-29 11:06 ` [Bug tree-optimization/18707] " ebotcazou at gcc dot gnu dot org @ 2004-11-29 19:25 ` pinskia at gcc dot gnu dot org 2004-12-16 20:01 ` cvs-commit at gcc dot gnu dot org 2004-12-16 20:04 ` ebotcazou at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-11-29 19:25 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-11-29 19:25 ------- Patch here: <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg02582.html>. -- What |Removed |Added ---------------------------------------------------------------------------- Keywords| |patch http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18707 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/18707] [4.0 Regression] Performance regression at -O2 with gzip 2004-11-28 20:30 [Bug c/18707] New: Performance regression at -O2 with gzip ebotcazou at gcc dot gnu dot org ` (2 preceding siblings ...) 2004-11-29 19:25 ` pinskia at gcc dot gnu dot org @ 2004-12-16 20:01 ` cvs-commit at gcc dot gnu dot org 2004-12-16 20:04 ` ebotcazou at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: cvs-commit at gcc dot gnu dot org @ 2004-12-16 20:01 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-12-16 20:01 ------- Subject: Bug 18707 CVSROOT: /cvs/gcc Module name: gcc Changes by: ebotcazou@gcc.gnu.org 2004-12-16 20:01:26 Modified files: gcc : ChangeLog cfgloopmanip.c Log message: PR tree-optimization/18707 * cfgloopmanip.c (create_preheader): Move the preheader only if the latch was falling through to the header. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.6860&r2=2.6861 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cfgloopmanip.c.diff?cvsroot=gcc&r1=1.39&r2=1.40 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18707 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/18707] [4.0 Regression] Performance regression at -O2 with gzip 2004-11-28 20:30 [Bug c/18707] New: Performance regression at -O2 with gzip ebotcazou at gcc dot gnu dot org ` (3 preceding siblings ...) 2004-12-16 20:01 ` cvs-commit at gcc dot gnu dot org @ 2004-12-16 20:04 ` ebotcazou at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: ebotcazou at gcc dot gnu dot org @ 2004-12-16 20:04 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From ebotcazou at gcc dot gnu dot org 2004-12-16 20:04 ------- See http://gcc.gnu.org/ml/gcc-patches/2004-12/msg01232.html -- What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18707 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2004-12-16 20:04 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2004-11-28 20:30 [Bug c/18707] New: Performance regression at -O2 with gzip ebotcazou at gcc dot gnu dot org 2004-11-28 20:32 ` [Bug regression/18707] [4.0 Regression] " pinskia at gcc dot gnu dot org 2004-11-29 11:06 ` [Bug tree-optimization/18707] " ebotcazou at gcc dot gnu dot org 2004-11-29 19:25 ` pinskia at gcc dot gnu dot org 2004-12-16 20:01 ` cvs-commit at gcc dot gnu dot org 2004-12-16 20:04 ` ebotcazou at gcc dot gnu dot org
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