hg: jdk9/hs-gc/hotspot: 8069016: Add BarrierSet downcast support

[jon.masamitsu at oracle.com]

Changeset: 1573e72240b9
Author:    kbarrett
Date:      2015-02-27 19:52 -0500
URL:       http://hg.openjdk.java.net/jdk9/hs-gc/hotspot/rev/1573e72240b9

8069016: Add BarrierSet downcast support
Summary: Add FakeRttiSupport utility and use to provide barrier_set_cast.
Reviewed-by: jmasa, sangheki

! src/cpu/ppc/vm/macroAssembler_ppc.cpp
! src/cpu/ppc/vm/stubGenerator_ppc.cpp
! src/cpu/sparc/vm/c1_Runtime1_sparc.cpp
! src/cpu/sparc/vm/macroAssembler_sparc.cpp
! src/cpu/sparc/vm/stubGenerator_sparc.cpp
! src/cpu/x86/vm/c1_Runtime1_x86.cpp
! src/cpu/x86/vm/macroAssembler_x86.cpp
! src/cpu/x86/vm/stubGenerator_x86_32.cpp
! src/cpu/x86/vm/stubGenerator_x86_64.cpp
! src/share/vm/c1/c1_LIRGenerator.cpp
! src/share/vm/compiler/disassembler.cpp
! src/share/vm/gc_implementation/g1/concurrentMark.cpp
! src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
! src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp
! src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.hpp
! src/share/vm/gc_implementation/g1/heapRegion.cpp
! src/share/vm/gc_implementation/parallelScavenge/cardTableExtension.cpp
! src/share/vm/gc_implementation/parallelScavenge/cardTableExtension.hpp
! src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.cpp
! src/share/vm/gc_implementation/parallelScavenge/psOldGen.cpp
! src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp
! src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp
! src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp
! src/share/vm/memory/barrierSet.hpp
! src/share/vm/memory/barrierSet.inline.hpp
! src/share/vm/memory/cardTableModRefBS.cpp
! src/share/vm/memory/cardTableModRefBS.hpp
! src/share/vm/memory/modRefBarrierSet.hpp
! src/share/vm/opto/graphKit.cpp
! src/share/vm/runtime/vmStructs.cpp
! src/share/vm/shark/sharkBuilder.cpp
+ src/share/vm/utilities/fakeRttiSupport.hpp