[8u] RFR + RFA: 8209639: assert failure in coalesce.cpp: attempted to spill a non-spillable item

[Roland Westrelin]

Hi Sean,

> do you plan to port this fix to JDK 11.0.x first ?

I didn't plan to but I suppose it makes sense. I will go through the
process for 11u. Can both requests proceed in parallel?

Roland.