[12] RFR(S): 8208275: C2 crash in Node::add_req(Node*)

[Roland Westrelin]

> Yes. I've just added an assert and executed hs-tier1-3 and all hotspot tests with -Xcomp. The assert
> only triggered with my TestOneIterationStripMined.java. Therefore, an alternative solution would be
> to just bail out of split-if when the region is a CountedLoop because the current implementation
> does not support CountedLoops anyway.
>
> What do you think?

Bailing out sounds good to me.

Roland.