src/share/vm/opto/matcher.cpp
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rev 10271 : 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
Reviewed-by: iveresov, kvn, vlivanov
Contributed-by: Ivan Krylov <ivan@azul.com>, Yuri Gaevsky <ygaevsky@azul.com>
@@ -941,10 +941,11 @@
case Op_HasNegatives:
case Op_MemBarVolatile:
case Op_MemBarCPUOrder: // %%% these ideals should have narrower adr_type?
case Op_StrInflatedCopy:
case Op_StrCompressedCopy:
+ case Op_OnSpinWait:
case Op_EncodeISOArray:
nidx = Compile::AliasIdxTop;
nat = NULL;
break;
}