{"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"sym::unchecked_add"}]}
        sym::unchecked_add | sym::unchecked_sub | sym::unchecked_mul => {
        sym::rotate_left | sym::rotate_right => (1, 0, vec![param(0), tcx.types.u32], param(0)),
            (1, 0, vec![param(0), param(0)], param(0))