src/share/vm/opto/library_call.cpp

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rev 7258 : 8064611: AARCH64: Changes to HotSpot shared code
Summary: Everything except cpu/ and os_cpu/.
Reviewed-by: kvn

@@ -2586,17 +2586,19 @@
     // volatile membars (for stores; compare Parse::do_put_xxx), which
     // we cannot do effectively here because we probably only have a
     // rough approximation of type.
     need_mem_bar = true;
     // For Stores, place a memory ordering barrier now.
+#ifndef AARCH64
     if (is_store) {
       insert_mem_bar(Op_MemBarRelease);
     } else {
       if (support_IRIW_for_not_multiple_copy_atomic_cpu) {
         insert_mem_bar(Op_MemBarVolatile);
       }
     }
+#endif // AARCH64
   }
 
   // Memory barrier to prevent normal and 'unsafe' accesses from
   // bypassing each other.  Happens after null checks, so the
   // exception paths do not take memory state from the memory barrier,

@@ -2681,19 +2683,21 @@
 #undef __
       }
     }
   }
 
+#ifndef AARCH64
   if (is_volatile) {
     if (!is_store) {
       insert_mem_bar(Op_MemBarAcquire);
     } else {
       if (!support_IRIW_for_not_multiple_copy_atomic_cpu) {
         insert_mem_bar(Op_MemBarVolatile);
       }
     }
   }
+#endif // AARCH64
 
   if (need_mem_bar) insert_mem_bar(Op_MemBarCPUOrder);
 
   return true;
 }