hg: jdk/jdk: 8212611: Small collection of simple changes from shenandoah

[rwestrel at redhat.com]

Changeset: 4f2215a00ed1
Author:    roland
Date:      2018-10-17 10:19 +0200
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/4f2215a00ed1

8212611: Small collection of simple changes from shenandoah
Reviewed-by: thartmann, kvn, eosterlund

! src/hotspot/share/gc/shared/c2/barrierSetC2.hpp
! src/hotspot/share/gc/z/c2/zBarrierSetC2.cpp
! src/hotspot/share/gc/z/c2/zBarrierSetC2.hpp
! src/hotspot/share/opto/cfgnode.cpp
! src/hotspot/share/opto/compile.cpp
! src/hotspot/share/opto/graphKit.cpp
! src/hotspot/share/opto/macro.cpp
! src/hotspot/share/opto/memnode.cpp
! src/hotspot/share/opto/node.cpp
! src/hotspot/share/opto/phaseX.cpp
! src/hotspot/share/opto/subnode.cpp