hg: shenandoah/jdk8u/hotspot: [backport] Make sure selective barriers enabling/disabling works

[ashipile at redhat.com]

Changeset: 3311caf75f60
Author:    shade
Date:      2017-11-27 23:56 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk8u/hotspot/rev/3311caf75f60

[backport] Make sure selective barriers enabling/disabling works

! src/cpu/aarch64/vm/aarch64.ad
! src/cpu/aarch64/vm/c1_LIRAssembler_aarch64.cpp
! src/cpu/aarch64/vm/macroAssembler_aarch64.cpp
! src/cpu/aarch64/vm/shenandoahBarrierSet_aarch64.cpp
! src/cpu/x86/vm/c1_LIRAssembler_x86.cpp
! src/cpu/x86/vm/macroAssembler_x86.cpp
! src/cpu/x86/vm/shenandoahBarrierSet_x86.cpp
! src/cpu/x86/vm/x86_64.ad
! src/share/vm/c1/c1_LIR.hpp
! src/share/vm/ci/ciObjectFactory.cpp
! src/share/vm/classfile/symbolTable.cpp
! src/share/vm/gc_implementation/shenandoah/shenandoahBarrierSet.cpp
! src/share/vm/gc_implementation/shenandoah/shenandoahCollectorPolicy.cpp
! src/share/vm/gc_implementation/shenandoah/shenandoah_globals.hpp
! src/share/vm/oops/klass.cpp
! src/share/vm/opto/escape.cpp
! src/share/vm/opto/library_call.cpp
! src/share/vm/opto/parse2.cpp
! src/share/vm/opto/shenandoahSupport.cpp
! src/share/vm/opto/shenandoahSupport.hpp
! src/share/vm/opto/type.cpp
! src/share/vm/prims/jni.cpp
! src/share/vm/prims/unsafe.cpp
! src/share/vm/runtime/thread.cpp
+ test/gc/shenandoah/TestSelectiveBarrierFlags.java