RFR (M) 8035605: Expand functionality of PredictedIntrinsicGenerator

[Roland Westrelin]

> http://cr.openjdk.java.net/~kvn/8035605/webrev

callGenerator.cpp:
 892   PredicatedIntrinsicGenerator(CallGenerator* intrinsic,
 893                               CallGenerator* cg)

indentation is broken.

What does that comment mean?
956     // Assert(no_new_memory && no_new_io && no_new_exceptions) after generate_predicate.

In GraphKit::merge_memory(): _gvn.transform() is not called on the new PhiNodes. Wouldn’t we want to call it?

Roland.