{"ast_node_type":"variable","tokens":[{"end":58,"kind":"keyword","start":0,"text":"let"}]}
        let (v1, v2) = if vec_num_units < mask_num_units {
        let result_type = self.context.new_vector_type(element_type, mask_num_units as u64);
            // NOTE: the mask needs to be the same length as the input vectors, so join the 2