src/share/vm/opto/connode.cpp

rev 3419 : 7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
Summary: use shorter instruction sequences for atomic add and atomic exchange when possible.
Reviewed-by:

*** 477,487 ****
      int opc = n->Opcode();
      possible_alias = n->is_Phi() ||
          opc == Op_CheckCastPP ||
          opc == Op_StorePConditional ||
          opc == Op_CompareAndSwapP ||
!         opc == Op_CompareAndSwapN;
    }
    return possible_alias;
  }
  
  //------------------------------Value------------------------------------------
--- 477,489 ----
      int opc = n->Opcode();
      possible_alias = n->is_Phi() ||
          opc == Op_CheckCastPP ||
          opc == Op_StorePConditional ||
          opc == Op_CompareAndSwapP ||
!         opc == Op_CompareAndSwapN ||
!         opc == Op_GetAndSetP ||
!         opc == Op_GetAndSetN;
    }
    return possible_alias;
  }
  
  //------------------------------Value------------------------------------------