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* [Bug target/37462] New: [4..4 Regression] Revision 140030 caused >10% 176.gcc regression
@ 2008-09-10 14:37 hjl dot tools at gmail dot com
2008-09-10 15:01 ` [Bug target/37462] " hjl dot tools at gmail dot com
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-09-10 14:37 UTC (permalink / raw)
To: gcc-bugs
Revision 140030 caused >10% 176.gcc performance regression
in SPEC CPU 2000 on Intel Core 2 running Linux/x86-64 with
-O2 -ffast-math.
--
Summary: [4..4 Regression] Revision 140030 caused >10% 176.gcc
regression
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hjl dot tools at gmail dot com
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37462
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/37462] [4..4 Regression] Revision 140030 caused >10% 176.gcc regression
2008-09-10 14:37 [Bug target/37462] New: [4..4 Regression] Revision 140030 caused >10% 176.gcc regression hjl dot tools at gmail dot com
@ 2008-09-10 15:01 ` hjl dot tools at gmail dot com
2008-09-10 16:49 ` hjl dot tools at gmail dot com
2008-09-10 16:50 ` hjl dot tools at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-09-10 15:01 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from hjl dot tools at gmail dot com 2008-09-10 14:59 -------
Honza suggested that
---
This mostl likely mean that your glibc has slow memset implementation.
I saw similar drop on SPEC2000 GCC and Debian machines used by
compilation farm. I was told that FSF glibc was finally updated with
new GCC so hopefully this problem is solved now.
Our (Opteron based) SPEC2006 tester seems fine
http://gcc.opensuse.org/SPEC/CINT/sb-balakirew-head-64-2006/403_gcc_big.png
---
I will verify it on Fedora 9.
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Joey dot ye at intel dot
| |com, weiliang dot lin at
| |intel dot com, xuepeng dot
| |guo at intel dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37462
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/37462] [4..4 Regression] Revision 140030 caused >10% 176.gcc regression
2008-09-10 14:37 [Bug target/37462] New: [4..4 Regression] Revision 140030 caused >10% 176.gcc regression hjl dot tools at gmail dot com
2008-09-10 15:01 ` [Bug target/37462] " hjl dot tools at gmail dot com
@ 2008-09-10 16:49 ` hjl dot tools at gmail dot com
2008-09-10 16:50 ` hjl dot tools at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-09-10 16:49 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from hjl dot tools at gmail dot com 2008-09-10 16:48 -------
I verified that on Fedora 9 there is no regression between
revision 140029 and 140030 on Intel Core 2.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37462
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/37462] [4..4 Regression] Revision 140030 caused >10% 176.gcc regression
2008-09-10 14:37 [Bug target/37462] New: [4..4 Regression] Revision 140030 caused >10% 176.gcc regression hjl dot tools at gmail dot com
2008-09-10 15:01 ` [Bug target/37462] " hjl dot tools at gmail dot com
2008-09-10 16:49 ` hjl dot tools at gmail dot com
@ 2008-09-10 16:50 ` hjl dot tools at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-09-10 16:50 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from hjl dot tools at gmail dot com 2008-09-10 16:48 -------
Works on Fedora 9.
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37462
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2008-09-10 16:50 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2008-09-10 14:37 [Bug target/37462] New: [4..4 Regression] Revision 140030 caused >10% 176.gcc regression hjl dot tools at gmail dot com
2008-09-10 15:01 ` [Bug target/37462] " hjl dot tools at gmail dot com
2008-09-10 16:49 ` hjl dot tools at gmail dot com
2008-09-10 16:50 ` hjl dot tools at gmail dot com
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