P4 | Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-2177294 | 7 | Vladimir Kozlov | P3 | Closed | Fixed | b39 |
| JDK-2172800 | 6u14 | Vladimir Kozlov | P3 | Resolved | Fixed | b01 |
Currently C2 often generats redundant tests against null:
decode_heap_oop R11,R10
testl R10, R10 # compressed ptr
jeq B75 P=0.000001 C=-1.000000
decode_heap_oop also contains a test of R10 that's not exposed to the optimizer.
decode_heap_oop R11,R10
testl R10, R10 # compressed ptr
jeq B75 P=0.000001 C=-1.000000
decode_heap_oop also contains a test of R10 that's not exposed to the optimizer.
- backported by
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JDK-2172800 Improve code and implicit null check generation for comressed oops
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- Resolved
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- Closed
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