{"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"return"}]}
        return Ok(bx.select(m_i1s, args[1].immediate(), args[2].immediate()));
        let m_i1s = vector_mask_to_bitmask(bx, args[0].immediate(), in_elem_bitwidth, m_len);
    }