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8224626: Shenandoah: Elide barriers on uncommon traps

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Reviewed-by: roland, shade
This commit is contained in:
Roman Kennke 2019-05-23 12:12:04 +02:00
parent 9baafa55a6
commit dc783cb6ec
1 changed files with 5 additions and 1 deletions
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6
src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp
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@ -3123,7 +3123,11 @@ ShenandoahLoadReferenceBarrierNode::Strength ShenandoahLoadReferenceBarrierNode:
break;
}
case Op_CallStaticJava: {
strength = STRONG;
// If it's an deopt-call we don't need barriers because
// the LRB will be applied when unpacking the deopt frame.
if (n->as_CallStaticJava()->uncommon_trap_request() == 0) {
strength = STRONG;
}
break;
}
case Op_CallDynamicJava: