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8264288: Performance issue with MethodHandle.asCollector

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Reviewed-by: jrose, vlivanov
This commit is contained in:
Jorn Vernee 2021-04-05 20:05:07 +00:00
parent 920189918e
commit b7baca7f32
10 changed files with 197 additions and 358 deletions
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9
src/java.base/share/classes/java/lang/invoke/MethodHandles.java
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@ -5731,14 +5731,7 @@ assertEquals("[top, [[up, down, strange], charm], bottom]",
MethodType newType = collectArgumentsChecks(target, pos, filter);
MethodType collectorType = filter.type();
BoundMethodHandle result = target.rebind();
LambdaForm lform;
if (collectorType.returnType().isArray() && filter.intrinsicName() == Intrinsic.NEW_ARRAY) {
lform = result.editor().collectArgumentArrayForm(1 + pos, filter);
if (lform != null) {
return result.copyWith(newType, lform);
}
}
lform = result.editor().collectArgumentsForm(1 + pos, collectorType.basicType());
LambdaForm lform = result.editor().collectArgumentsForm(1 + pos, collectorType.basicType());
return result.copyWithExtendL(newType, lform, filter);
}