Duncan
I have looked on and off at using the class hierarchy for method lookup.
What drives that
is noticing that most methods only have one implementation and so my PICs
can get
overloaded with receivers which all dispatch to the same method. This is
one on my
main sources of megamorphic call sites. Particularly methods of Object
which are not
overwritten.
That said I also realize that even callsites which have this
characteristic are usually monomorphic
anyway. Its hard to imagine that any lookup is going to beat a GWT. So I
have been looking
mainly at sites which go megamorphic ( > 10 right now ) and where the
number of receivers which
implement this method are less than 10. Or for the case where the method
is in Object and no one
overrides it.
Sorta OK, but some hierarchy chains have more than 10 members so I would
like to somehow
use a hash of some sort to indicate a shared method implementaion. Nothing
has come to mind
so I would be interested in what you are using.
regards
mark
_______________________________________________
mlvm-dev mailing list
mlvm-dev@openjdk.java.net
http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
