hg: jdk9/hs-rt/hotspot: 8131330: G1CollectedHeap::verify_dirty_young_list fails with assert

[kim.barrett at oracle.com]

Changeset: c66e1029a407
Author:    kbarrett
Date:      2015-08-31 13:06 -0400
URL:       http://hg.openjdk.java.net/jdk9/hs-rt/hotspot/rev/c66e1029a407

8131330: G1CollectedHeap::verify_dirty_young_list fails with assert
Summary: Use assembly loop to avoid compiler optimization into memset
Reviewed-by: ecaspole, tschatzl

+ src/cpu/sparc/vm/memset_with_concurrent_readers_sparc.cpp
! src/cpu/sparc/vm/vm_version_sparc.cpp
! src/share/vm/gc/g1/g1BlockOffsetTable.inline.hpp
! src/share/vm/gc/g1/g1SATBCardTableModRefBS.cpp
! src/share/vm/gc/shared/blockOffsetTable.hpp
+ src/share/vm/gc/shared/memset_with_concurrent_readers.cpp
+ src/share/vm/gc/shared/memset_with_concurrent_readers.hpp
! src/share/vm/prims/jni.cpp
! src/share/vm/runtime/globals.hpp