src/share/vm/opto/graphKit.cpp

*** 3787,3796 ****
--- 3787,3799 ----
    // Get the alias_index for raw card-mark memory
    int adr_type = Compile::AliasIdxRaw;
    Node*   zero = __ ConI(0); // Dirty card value
    BasicType bt = T_BYTE;
  
+   insert_mem_bar(Op_MemBarVolatile);   // StoreLoad barrier
+   __ sync_kit(this);
+   
    if (UseCondCardMark) {
      // The classic GC reference write barrier is typically implemented
      // as a store into the global card mark table.  Unfortunately
      // unconditional stores can result in false sharing and excessive
      // coherence traffic as well as false transactional aborts.