Re: [groovy-dev] invokedynamic: Is It What We Really Need?

I have been thinking about possible reasons why we are seeing such a
different level of performance with a similar technique. 

I think the crucial difference may be that I am making calls to static
methods in my case statements whereas the Reflector made calls to instance
methods. Hotspot can immediately see that it's always safe top inline a
static method. For an instance method it has to worry about subclasses
overloading it (Hotspot can and does deal with this, of course, but it's
logically more costly and I would imagine it delays this optimisation until
it's done the cheaper optimisations).

If this is the reason that I'm seeing better numbers it's entirely
fortuitous. I chose static methods so that I could do super calls easier not
because of any performance gain.

John Wilson
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