| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-2173672 | 7 | Vladimir Kozlov | P4 | Closed | Fixed | b49 |
| JDK-2180493 | 6u18 | Vladimir Kozlov | P4 | Resolved | Fixed | b01 |
Tom Rodriguez wrote:
> CreateEx certainly must be at the beginning of the block during register
> allocation, otherwise I don't think the interference graph will be
> handled correctly. The CreateEx represents the incoming exception in a
> fixed register and it needs to interfere with every value coming into
> the exception handler. If a MachSpillCopy is before it then a value
> could be live into the exception point in the exception oop register,
> where it would be blown away.
[t@8 l@8]: print b->dump()
B23: # B35 B24 B34 <- N269 Freq: 5.49441e-06
286 Region === 286 117 [[ 286 114 119 ]]
399 MachSpillCopy === _ 91 [[ 114 ]] Oop:java/lang/String:NotNull:exact *
398 MachSpillCopy === _ 95 [[ 114 443 ]]
397 MachSpillCopy === _ 353 [[ 114 442 ]]
396 MachSpillCopy === _ 352 [[ 114 441 ]] Oop:java/util/Locale:exact *
395 MachSpillCopy === _ 380 [[ 114 440 ]] Oop:java/util/ResourceBundle$Control *
119 CreateException === 286 100 [[ 393 ]] java/lang/Throwable:NotNull * Oop:java/lang/Throwable:NotNull * !jvms: ResourceBundle::loadBundle @ bci:83
> CreateEx certainly must be at the beginning of the block during register
> allocation, otherwise I don't think the interference graph will be
> handled correctly. The CreateEx represents the incoming exception in a
> fixed register and it needs to interfere with every value coming into
> the exception handler. If a MachSpillCopy is before it then a value
> could be live into the exception point in the exception oop register,
> where it would be blown away.
[t@8 l@8]: print b->dump()
B23: # B35 B24 B34 <- N269 Freq: 5.49441e-06
286 Region === 286 117 [[ 286 114 119 ]]
399 MachSpillCopy === _ 91 [[ 114 ]] Oop:java/lang/String:NotNull:exact *
398 MachSpillCopy === _ 95 [[ 114 443 ]]
397 MachSpillCopy === _ 353 [[ 114 442 ]]
396 MachSpillCopy === _ 352 [[ 114 441 ]] Oop:java/util/Locale:exact *
395 MachSpillCopy === _ 380 [[ 114 440 ]] Oop:java/util/ResourceBundle$Control *
119 CreateException === 286 100 [[ 393 ]] java/lang/Throwable:NotNull * Oop:java/lang/Throwable:NotNull * !jvms: ResourceBundle::loadBundle @ bci:83
- backported by
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JDK-2180493 assert("CreateEx must be first instruction in block" )
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- Resolved
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-
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- Closed
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- relates to
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JDK-6791852 assert(b->_nodes[insidx] == n,"got insidx set incorrectly")
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- Closed
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