[8u] RFR + RFA: 8188223: IfNode::range_check_trap_proj() should handler dying subgraph with single if proj

[Rob McKenna]

You may want to seek a codereview from hotspot-dev. Reviewers may or may
not monitor this alias.

    -Rob

On 16/03/18 16:06, Roland Westrelin wrote:
> 
> We (Red Hat) would like to backport 8188223 to 8u: we're hitting hit
> with openJFX. The patch doesn't apply cleanly. See below for a new
> webrev. It was pushed to jdk10 5 months ago and there was no follow up
> bugs that I'm aware of.
> 
> https://bugs.openjdk.java.net/browse/JDK-8188223
> http://hg.openjdk.java.net/jdk10/master/rev/24ebaf9d7198
> 
> New webrev:
> 
> http://cr.openjdk.java.net/~roland/8188223-8u/webrev.00/
> 
> Roland.