--- old/src/share/vm/oops/oop.inline.hpp	2017-07-25 13:46:00.499177603 -0400
+++ new/src/share/vm/oops/oop.inline.hpp	2017-07-25 13:46:00.242720509 -0400
@@ -446,6 +446,10 @@
 Metadata* oopDesc::metadata_field(int offset) const           { return *metadata_field_addr(offset);   }
 void oopDesc::metadata_field_put(int offset, Metadata* value) { *metadata_field_addr(offset) = value;  }
 
+Metadata* oopDesc::metadata_field_acquire(int offset) const   {
+  return (Metadata*)OrderAccess::load_ptr_acquire(metadata_field_addr(offset));
+}
+
 void oopDesc::release_metadata_field_put(int offset, Metadata* value) {
   OrderAccess::release_store_ptr(metadata_field_addr(offset), value);
 }