[8u] request for approval: 8187822: C2 conditonal move optimization might create broken graph

[Roland Westrelin]

Hi,

I'd like to backport 8187822 to 8u as it's an issue reported by one of
our (Red Hat) users. The patch applies cleanly. It was pushed to jdk10 3
weeks ago and there was no follow up bugs that I'm aware of.

https://bugs.openjdk.java.net/browse/JDK-8187822
http://hg.openjdk.java.net/jdk10/hs/rev/b3fd664e5af2

Roland.