hg: jdk/submit: 8203215: IdealLoopTree::split_outer_loop leaves phi-nodes with only one input

[nils.eliasson at oracle.com]

Changeset: 86f038c25410
Author:    neliasso
Date:      2018-05-17 12:08 +0200
URL:       http://hg.openjdk.java.net/jdk/submit/rev/86f038c25410

8203215: IdealLoopTree::split_outer_loop leaves phi-nodes with only one input
Summary: Make sure the phis are transformed
Reviewed-by: roland, kvn, rbackman

! src/hotspot/share/opto/loopnode.cpp