protected final OPT_MemoryOperand MO_D(int disp,
protected final OPT_MemoryOperand MO_D(Offset disp,
  protected final OPT_MemoryOperand MO_D(int disp,                                          byte size, OPT_LocationOperand loc,                                         OPT_Operand guard) {    return OPT_MemoryOperand.D(Address.fromIntSignExtend(disp), size, loc, guard);  }