[9] RFR (XXS): 8077054: DMH LFs should be customizeable

Thu, 09 Apr 2015 11:45:55 -0700 

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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