C2 support for method invocations on value types

[Zoltán Majó]

Hi,


here is a changeset to add (preliminary) C2 support for method 
invocations on value types.

http://cr.openjdk.java.net/~zmajo/valhalla/00.invokedirect.webrev.00/

The changeset also adds some verification code to the invokedirect 
implementation in the interpreter. With the modification, the 
interpreter fails if it encounters the invocation of a non-final method 
on a value type. If you disagree with that change, I can remove it from 
the planned changeset.

I also made some comments more verbose. Maybe future first-readers will 
benefit from that as well.

I plan to push the change on Monday the earliest, unless, of course, 
there are any objections.

Thank you!

Best regards,


Zoltan