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Bug
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Resolution: Fixed
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P3
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1.4.2
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rc
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itanium
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generic, linux
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-2069128 | 5.0 | Bob Vandette | P3 | Closed | Fixed | beta |
The IA64 server compiler implementation is generating 2 un-needed save
and restores of the PFS and LC register on every method it compiles.
Testing has shown that this cost us 5% of our performance when running
pecJVM specJBB.
The only routine which uses the LC register is the ClearArray service.
We can increase performance by moving the LC save/restore within
this routine.
and restores of the PFS and LC register on every method it compiles.
Testing has shown that this cost us 5% of our performance when running
pecJVM specJBB.
The only routine which uses the LC register is the ClearArray service.
We can increase performance by moving the LC save/restore within
this routine.
- backported by
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JDK-2069128 Win64/Lin64: C2 generating 2 unnecessary push/pop reg pairs on each method
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- Closed
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- duplicates
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- Closed
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