Method packmode

dnn/src/fallback/matrix_mul/opr_impl.h:212–212

        };
        virtual AlgoSet algoset() const { return AlgoSet::ALGO_TYPE_GEMM; }
        virtual PackMode packmode() const { return PackMode::DEFAULT; }
        virtual void pack_A(const KernParam&, void*, size_t, size_t) const {
            megdnn_assert(0);
        };