if (index_vector_dim == indices_type.getRank()) {
    llvm::SmallVector<int64_t, 4> new_start_indices_shape(
        indices_type.getShape().begin(), indices_type.getShape().end());
    new_start_indices_shape.push_back(1);
    indices_type = RankedTensorType::get(new_start_indices_shape,
                                         indices_type.getElementType());