src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.cpp

*** 103,113 ****
    int adr_type = Compile::AliasIdxRaw;
    Node*   zero = __ ConI(0); // Dirty card value
  
    if (UseCondCardMark) {
      if (ct->scanned_concurrently()) {
!       kit->insert_store_load_for_barrier();
        __ sync_kit(kit);
      }
      // 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
--- 103,113 ----
    int adr_type = Compile::AliasIdxRaw;
    Node*   zero = __ ConI(0); // Dirty card value
  
    if (UseCondCardMark) {
      if (ct->scanned_concurrently()) {
!       kit->insert_mem_bar(Op_MemBarVolatile, oop_store);
        __ sync_kit(kit);
      }
      // 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