diff -r 6cd87342c0b1 -r fc16fcee952c src/share/vm/memory/barrierSet.hpp
--- a/src/share/vm/memory/barrierSet.hpp	Mon Sep 26 13:04:07 2016 -0400
+++ b/src/share/vm/memory/barrierSet.hpp	Mon Sep 26 13:56:18 2016 -0400
@@ -98,12 +98,12 @@
 protected:
   virtual void write_ref_field_pre_work(      oop* field, oop new_val) {
 #ifdef MIPS64
-      OrderAccess::fence();
+      if (Use3A2000) OrderAccess::fence();
 #endif
   };
   virtual void write_ref_field_pre_work(narrowOop* field, oop new_val) {
 #ifdef MIPS64
-      OrderAccess::fence();
+      if (Use3A2000) OrderAccess::fence();
 #endif
   };
 public:
@@ -143,13 +143,13 @@
   virtual void write_ref_array_pre(oop* dst, int length,
                                    bool dest_uninitialized = false) {
 #ifdef MIPS64
-      OrderAccess::fence();
+      if (Use3A2000) OrderAccess::fence();
 #endif
   }
   virtual void write_ref_array_pre(narrowOop* dst, int length,
                                    bool dest_uninitialized = false) {
 #ifdef MIPS64
-      OrderAccess::fence();
+      if (Use3A2000) OrderAccess::fence();
 #endif
 }
   // Below count is the # array elements being written, starting