hg: shenandoah/jdk10/hotspot: When Shenandoah WB is moved out of loop, connect it to correct loop memory Phi (back out and revisit previous fix)

[rwestrel at redhat.com]

Changeset: 927e9eafe4f0
Author:    roland
Date:      2017-09-27 16:55 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk10/hotspot/rev/927e9eafe4f0

When Shenandoah WB is moved out of loop, connect it to correct loop memory Phi (back out and revisit previous fix)

! src/share/vm/opto/cfgnode.cpp
! src/share/vm/opto/cfgnode.hpp
! src/share/vm/opto/compile.cpp
! src/share/vm/opto/memnode.cpp
! src/share/vm/opto/node.cpp
! src/share/vm/opto/phaseX.cpp
! src/share/vm/opto/shenandoahSupport.cpp