Mercurial > hg > truffle
comparison src/share/vm/opto/loopTransform.cpp @ 17780:606acabe7b5c
8031320: Use Intel RTM instructions for locks
Summary: Use RTM for inflated locks and stack locks.
Reviewed-by: iveresov, twisti, roland, dcubed
| author | kvn |
|---|---|
| date | Thu, 20 Mar 2014 17:49:27 -0700 |
| parents | 085b304a1cc5 |
| children | 62c54fcc0a35 |
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| 17778:a48e16541e6b | 17780:606acabe7b5c |
|---|---|
| 615 case Op_StrIndexOf: | 615 case Op_StrIndexOf: |
| 616 case Op_EncodeISOArray: | 616 case Op_EncodeISOArray: |
| 617 case Op_AryEq: { | 617 case Op_AryEq: { |
| 618 return false; | 618 return false; |
| 619 } | 619 } |
| 620 #if INCLUDE_RTM_OPT | |
| 621 case Op_FastLock: | |
| 622 case Op_FastUnlock: { | |
| 623 // Don't unroll RTM locking code because it is large. | |
| 624 if (UseRTMLocking) { | |
| 625 return false; | |
| 626 } | |
| 627 } | |
| 628 #endif | |
| 620 } // switch | 629 } // switch |
| 621 } | 630 } |
| 622 | 631 |
| 623 return true; // Do maximally unroll | 632 return true; // Do maximally unroll |
| 624 } | 633 } |
| 720 case Op_AryEq: { | 729 case Op_AryEq: { |
| 721 // Do not unroll a loop with String intrinsics code. | 730 // Do not unroll a loop with String intrinsics code. |
| 722 // String intrinsics are large and have loops. | 731 // String intrinsics are large and have loops. |
| 723 return false; | 732 return false; |
| 724 } | 733 } |
| 734 #if INCLUDE_RTM_OPT | |
| 735 case Op_FastLock: | |
| 736 case Op_FastUnlock: { | |
| 737 // Don't unroll RTM locking code because it is large. | |
| 738 if (UseRTMLocking) { | |
| 739 return false; | |
| 740 } | |
| 741 } | |
| 742 #endif | |
| 725 } // switch | 743 } // switch |
| 726 } | 744 } |
| 727 | 745 |
| 728 // Check for being too big | 746 // Check for being too big |
| 729 if (body_size > (uint)LoopUnrollLimit) { | 747 if (body_size > (uint)LoopUnrollLimit) { |