bad handling of constant inputs in CmpPNode::Ideal()

[Roman Kennke]

That seems to fix an issue that I've seen with the SPECjvm compiler
benchmark. Go!

Roman


Am Dienstag, den 28.06.2016, 14:16 +0200 schrieb Roland Westrelin:
> Previous change had a bug:
> 
> http://cr.openjdk.java.net/~roland/shenandoah-cmpp-const/webrev.00/
> 
> Roland.