http://cr.openjdk.java.net/~vlivanov/8077054/webrev.00/
https://bugs.openjdk.java.net/browse/JDK-8077054
It's a followup fix for JDK-8069591 [1].
As Charlie observed, it's important to customize DirectMethodHandles as
well. Otherwise, additional frame for DMH LambdaForm is created and it
causes observable peak performance regression in some situations (e.g.
JRuby9K).
Testing: manual (microbenchmark, compilation log inspection).
Thanks!
Best regards,
Vladimir Ivanov
[1] https://bugs.openjdk.java.net/browse/JDK-8069591
"Customize LambdaForms which are invoked using
MH.invoke/invokeExact"
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