{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"simd_pair_for_each_lane(fx,"}]}
            simd_pair_for_each_lane(fx, x, y, ret, &|fx, lane_ty, _ret_lane_ty, x_lane, y_lane| {
            // FIXME use vector instructions when possible
                match (lane_ty.kind(), intrinsic) {