--- a/hotspot/src/cpu/aarch64/vm/aarch64.ad	Wed Jul 05 20:32:48 2017 +0200
+++ b/hotspot/src/cpu/aarch64/vm/aarch64.ad	Tue May 12 13:58:42 2015 +0000
@@ -810,9 +810,6 @@
   bool unnecessary_volatile(const Node *barrier);
   bool needs_releasing_store(const Node *store);
 
-  // Use barrier instructions rather than load acquire / store
-  // release.
-  const bool UseBarriersForVolatile = false;
   // Use barrier instructions for unsafe volatile gets rather than
   // trying to identify an exact signature for them
   const bool UseBarriersForUnsafeVolatileGet = false;