RFR(L): 8143211: provide bytecode intrinsics for loop and try/finally executors

[Michael Haupt]

Dear all,

please review this change.
RFE: https://bugs.openjdk.java.net/browse/JDK-8143211
Webrev: http://cr.openjdk.java.net/~mhaupt/8143211/webrev.00/

The change puts the tryFinally and loop method handle combinator implementations, which were introduced as part of the JEP 274 effort, on a LambdaForm basis, which executes in bytecode generating (default) and LambdaForm interpretation (-Djava.lang.invoke.MethodHandle.COMPILE_THRESHOLD=-1) modes. It also changes the output formatting of LambdaForms, introducing a (hopefully) more readable format.

Thanks,

Michael

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