Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/escape.cpp
src/share/vm/opto/escape.cpp
- changeset 1423
- 7e309ecb83ce
- parent 1392
- 159d56b94894
- child 1497
- dcdcc8c16e20
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| 1422:00977607da34 | 1423:7e309ecb83ce |
|---|---|
| 522 // | 522 // |
| 523 // It could happened on subclass's branch (from the type profiling | 523 // It could happened on subclass's branch (from the type profiling |
| 524 // inlining) which was not eliminated during parsing since the exactness | 524 // inlining) which was not eliminated during parsing since the exactness |
| 525 // of the allocation type was not propagated to the subclass type check. | 525 // of the allocation type was not propagated to the subclass type check. |
| 526 // | 526 // |
| 527 // Or the type 't' could be not related to 'base_t' at all. | |
| 528 // It could happened when CHA type is different from MDO type on a dead path | |
| 529 // (for example, from instanceof check) which is not collapsed during parsing. | |
| 530 // | |
| 527 // Do nothing for such AddP node and don't process its users since | 531 // Do nothing for such AddP node and don't process its users since |
| 528 // this code branch will go away. | 532 // this code branch will go away. |
| 529 // | 533 // |
| 530 if (!t->is_known_instance() && | 534 if (!t->is_known_instance() && |
| 531 !t->klass()->equals(base_t->klass()) && | 535 !base_t->klass()->is_subtype_of(t->klass())) { |
| 532 t->klass()->is_subtype_of(base_t->klass())) { | |
| 533 return false; // bail out | 536 return false; // bail out |
| 534 } | 537 } |
| 535 | 538 |
| 536 const TypeOopPtr *tinst = base_t->add_offset(t->offset())->is_oopptr(); | 539 const TypeOopPtr *tinst = base_t->add_offset(t->offset())->is_oopptr(); |
| 537 // Do NOT remove the next call: ensure an new alias index is allocated | 540 // Do NOT remove the next call: ensure an new alias index is allocated |
