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From: "hjl at lucon dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/32921] [4.3 Regression] Revision 126326 causes 12% slowdown
Date: Sun, 07 Oct 2007 15:19:00 -0000 [thread overview]
Message-ID: <20071007151938.28141.qmail@sourceware.org> (raw)
In-Reply-To: <bug-32921-682@http.gcc.gnu.org/bugzilla/>
------- Comment #10 from hjl at lucon dot org 2007-10-07 15:19 -------
(In reply to comment #9)
> Gcc 4.3 revision 128885 is much slower than gcc 4.1 redhat revision 128771
> with -O2 -ffast-math on 64bit Linux/Core 2 Duo:
>
> 437.leslie3d -26.2%
>
The main difference between gcc 4.1 redhat and gcc 4.1 is the -mtune=generic
change. I believe gcc 4.3 will also be much slower than gcc 4.1 on Opteron.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32921
next prev parent reply other threads:[~2007-10-07 15:19 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-28 0:23 [Bug tree-optimization/32921] New: " hjl at lucon dot org
2007-07-28 0:32 ` [Bug tree-optimization/32921] " pinskia at gcc dot gnu dot org
2007-07-28 0:32 ` pinskia at gcc dot gnu dot org
2007-07-28 0:51 ` hjl at lucon dot org
2007-07-28 1:02 ` pinskia at gcc dot gnu dot org
2007-07-28 10:02 ` rguenth at gcc dot gnu dot org
2007-07-28 20:51 ` hjl at lucon dot org
2007-07-28 20:59 ` rguenther at suse dot de
2007-07-28 23:25 ` hjl at lucon dot org
2007-09-11 11:48 ` jsm28 at gcc dot gnu dot org
2007-10-07 15:17 ` hjl at lucon dot org
2007-10-07 15:17 ` hjl at lucon dot org
2007-10-07 15:19 ` hjl at lucon dot org [this message]
2007-10-10 17:48 ` mmitchel at gcc dot gnu dot org
2007-10-17 16:14 ` pthaugen at gcc dot gnu dot org
2007-10-17 16:19 ` pthaugen at gcc dot gnu dot org
2007-10-17 16:59 ` pinskia at gcc dot gnu dot org
2007-10-17 17:41 ` dberlin at dberlin dot org
2007-10-17 21:22 ` rguenth at gcc dot gnu dot org
2007-10-18 11:45 ` rguenth at gcc dot gnu dot org
2007-10-18 20:55 ` hjl at lucon dot org
2007-10-19 11:26 ` rguenth at gcc dot gnu dot org
2007-10-19 12:28 ` rguenth at gcc dot gnu dot org
2007-10-19 12:40 ` rguenth at gcc dot gnu dot org
2007-10-19 15:36 ` rguenth at gcc dot gnu dot org
2007-10-19 16:28 ` rguenth at gcc dot gnu dot org
2007-10-19 22:13 ` hjl at lucon dot org
2007-10-20 4:21 ` patchapp at dberlin dot org
2007-10-20 9:39 ` rguenth at gcc dot gnu dot org
2007-10-20 16:05 ` hjl at lucon dot org
2007-10-22 21:11 ` pthaugen at gcc dot gnu dot org
2007-10-23 2:23 ` Joey dot ye at intel dot com
2007-10-23 20:29 ` pthaugen at gcc dot gnu dot org
2007-10-23 20:31 ` pthaugen at gcc dot gnu dot org
2007-10-24 12:23 ` rguenth at gcc dot gnu dot org
2007-10-24 15:02 ` rguenth at gcc dot gnu dot org
2007-10-24 15:18 ` rguenth at gcc dot gnu dot org
2007-10-24 15:19 ` rguenth at gcc dot gnu dot org
2007-10-24 23:15 ` pthaugen at gcc dot gnu dot org
2007-10-25 8:55 ` rguenth at gcc dot gnu dot org
2007-10-25 10:06 ` pinskia at gcc dot gnu dot org
2007-10-25 11:02 ` rguenth at gcc dot gnu dot org
2007-10-25 11:07 ` rguenth at gcc dot gnu dot org
2008-03-14 16:53 ` [Bug tree-optimization/32921] [4.3/4.4 " rguenth at gcc dot gnu dot org
2008-04-23 14:10 ` rguenth at gcc dot gnu dot org
2008-04-23 14:10 ` rguenth at gcc dot gnu dot org
2008-04-30 18:50 ` pthaugen at gcc dot gnu dot org
2008-04-30 20:30 ` rguenth at gcc dot gnu dot org
2008-04-30 21:43 ` rguenth at gcc dot gnu dot org
2008-04-30 22:36 ` pthaugen at gcc dot gnu dot org
2008-05-01 19:27 ` pthaugen at gcc dot gnu dot org
2008-05-02 10:29 ` rguenth at gcc dot gnu dot org
2008-05-02 12:17 ` rguenth at gcc dot gnu dot org
2008-05-02 12:33 ` dnovillo at google dot com
2008-05-02 12:56 ` rguenther at suse dot de
2008-05-02 14:16 ` mmitchel at gcc dot gnu dot org
2008-05-02 15:06 ` rguenther at suse dot de
2008-06-06 14:59 ` rguenth at gcc dot gnu dot org
2008-08-27 22:04 ` jsm28 at gcc dot gnu dot org
2008-12-08 15:41 ` rguenth at gcc dot gnu dot org
2009-01-24 10:22 ` rguenth at gcc dot gnu dot org
2009-01-31 14:27 ` [Bug tree-optimization/32921] [4.3 " bonzini at gnu dot org
2009-01-31 14:36 ` [Bug tree-optimization/32921] [4.3/4.4 " rguenth at gcc dot gnu dot org
2009-02-02 19:17 ` pthaugen at gcc dot gnu dot org
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