Hi Jim, some free from thinking. My implementation does not have a parallel stack so I am using the java stack frame to hold temps and pass arguments. Even so I can see how I would use a TaggedArray. Instead of using jvm var slots I would have one slot with a Tagged Array in it to hold my method temps. When invoking a callsite I would create a TaggedArray to hold the arguments and pass that to the invoke. I could cache the frames (assuming a cheap way to null the contents of a TaggedArray) to reduce object creation.
So the question is then how to handle the callsite code selection. The first GWT would have to test if the object is a reference or a tag and route. Seems like it would work. So other than extra overhead of using the arrays instead of the native stack it will probably work for me. I'll have to think some more regards mark
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