6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot Summary: developed a reexecute logic for the interpreter to reexecute the bytecode when deopt happens Reviewed-by: kvn, never, jrose, twisti

6865031: Application gives bad result (throws bad exception) with compressed oops Summary: Produce narrow type for new Phi from the original Phi type. Reviewed-by: cfang