Function MIDOUT_BEGIN

dnn/src/naive/warp_perspective/opr_impl.cpp:814–818

    if (warp::is_cv_available(
                src.layout, mat.layout, dst.layout, param().imode, param().format)) {
        MIDOUT_BEGIN(megdnn_naive_warpperspective, void) {
            warp_perspective_cv_exec(
                    src, mat, mat_idx, dst, param().border_val, param().bmode,
                    param().imode, handle());
        }
        MIDOUT_END();
    } else {
        megdnn_assert(warp::is_dnn_available(