// Get iterators to the tensors.
  const auto input_values_it = input_tensor.getValues<float>().begin();
  const auto weights_values_ptr = weights_tensor.getValues<float>().begin();
  auto weights_row_it = weights_values_ptr;
  // The 'else' case could be nullptr, but the types don't match.
  auto bias_values_it =
      has_bias ? bias_tensor.getValues<float>().begin() : input_values_it;