P4 | Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-2177258 | 7 | Vladimir Kozlov | P3 | Closed | Fixed | b39 |
| JDK-2172795 | 6u14 | Vladimir Kozlov | P3 | Resolved | Fixed | b01 |
C2 clone original loop's probability when it constructs pre-, main, post- loops.
Then C2 adds zero-trip guard for main loop with probability FAIR.
As result a main loop's probability could be half of a pre-loop's probability
and RA may generates stack spills in the main loop and not in the pre-loop.
Then C2 adds zero-trip guard for main loop with probability FAIR.
As result a main loop's probability could be half of a pre-loop's probability
and RA may generates stack spills in the main loop and not in the pre-loop.
- backported by
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JDK-2172795 Set probability FAIR for pre-, post- loops and ALWAYS for main loop
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- Resolved
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- Closed
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- relates to
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JDK-6910484 incorrect integer optimization (loosing and op-r in a given example)
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- Closed
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