--- old/src/share/vm/opto/library_call.cpp	2016-05-05 22:02:15.247659598 +0300
+++ new/src/share/vm/opto/library_call.cpp	2016-05-05 22:02:15.187659855 +0300
@@ -2472,9 +2472,10 @@
   bool requires_atomic_access = false;
   switch (kind) {
       case Relaxed:
-      case Opaque:
           requires_atomic_access = AlwaysAtomicAccesses;
           break;
+      case Opaque:
+          // Opaque accesses are atomic.
       case Acquire:
       case Release:
       case Volatile: