Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/loopUnswitch.cpp
src/share/vm/opto/loopUnswitch.cpp
- changeset 543
- a761c2d3b76a
- parent 435
- a61af66fc99e
- child 631
- d1605aabd0a1
- child 651
- 8d191a7697e2
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| 542:93b6525e3b82 | 543:a761c2d3b76a |
|---|---|
| 47 //------------------------------policy_unswitching----------------------------- | 47 //------------------------------policy_unswitching----------------------------- |
| 48 // Return TRUE or FALSE if the loop should be unswitched | 48 // Return TRUE or FALSE if the loop should be unswitched |
| 49 // (ie. clone loop with an invariant test that does not exit the loop) | 49 // (ie. clone loop with an invariant test that does not exit the loop) |
| 50 bool IdealLoopTree::policy_unswitching( PhaseIdealLoop *phase ) const { | 50 bool IdealLoopTree::policy_unswitching( PhaseIdealLoop *phase ) const { |
| 51 if( !LoopUnswitching ) { | 51 if( !LoopUnswitching ) { |
| 52 return false; | |
| 53 } | |
| 54 if (!_head->is_Loop()) { | |
| 52 return false; | 55 return false; |
| 53 } | 56 } |
| 54 uint nodes_left = MaxNodeLimit - phase->C->unique(); | 57 uint nodes_left = MaxNodeLimit - phase->C->unique(); |
| 55 if (2 * _body.size() > nodes_left) { | 58 if (2 * _body.size() > nodes_left) { |
| 56 return false; // Too speculative if running low on nodes. | 59 return false; // Too speculative if running low on nodes. |
