src/share/vm/opto/c2compiler.cpp
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rev 10065 : 8147844: new method j.l.Runtime.onSpinWait() and the corresponding x86 hotspot instrinsic
Summary: adds c1 & c2 x86 intrinsics for j.l.Runtime.onSpinWait() that utilize the 'pause' instruction
Contributed-by: ikrylov, ygaevsky
Reviewed-by: iveresov, vlivanov, kvn
@@ -301,10 +301,13 @@
if (!Matcher::match_rule_supported(Op_OverflowMulL)) return false;
break;
case vmIntrinsics::_getCallerClass:
if (SystemDictionary::reflect_CallerSensitive_klass() == NULL) return false;
break;
+ case vmIntrinsics::_onSpinWait:
+ if (!Matcher::match_rule_supported(Op_OnSpinWait)) return false;
+ break;
case vmIntrinsics::_hashCode:
case vmIntrinsics::_identityHashCode:
case vmIntrinsics::_getClass:
case vmIntrinsics::_dsin:
case vmIntrinsics::_dcos: