Usage feedback rewriting jdk.internal.foreign.abi.BindingSpecializer

[Brian Goetz]

>> Not sure what you are asking for here. There's no constant pool form 
>> for "short constant".  There's bipush/sipush, though.  What bytecode 
>> are you hoping to get out?
> I'd expect this:
>
>     cb.constantZero(ShortType)
>
> to result in iconst_0 being emitted. Where 'cb' is an instance of 
> `CodeBuilder`. (except, 'ShortType' would not be statically know, but 
> derived from a Class<?> value that is fed in to the generation code).

Oh, I get it now -- you want the default field value for a given type 
kind.  Yes, that makes sense, something like

     cb.loadDefault(typeKind)