review request (L): 6939224 MethodHandle.invokeGeneric needs to perform the correct set of conversions

john.r.rose at john.r.rose at
Mon Sep 13 11:36:10 PDT 2010

There is no up-call. The JVM just tail-calls an adapter previously prepared by the JDK runtime. So the interpreter has no special paths other than the slow path with the tail call. 

I think your implementation put the adapter on a method header. I put it on the method type family (the "form"). 

-- John  (on my iPhone)

On Sep 13, 2010, at 3:05 AM, Fredrik Öhrström <oehrstroem at> wrote:

> Why do an upcall to Java? The conversions should be so simple that it
> should be possible to handle them in the interpreter.

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