megenginelite-sys 1.8.2

A safe megenginelite wrapper in Rust
Documentation 
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/**
 * \file dnn/src/arm_common/intrinsic_helper.h
 * MegEngine is Licensed under the Apache License, Version 2.0 (the "License")
 *
 * Copyright (c) 2014-2021 Megvii Inc. All rights reserved.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied.
 */
#pragma once
#include "src/arm_common/neon_struct.h"
#include "src/arm_common/simd_macro/marm_neon.h"
#include "src/common/unroll_macro.h"
#define __ai inline __attribute__((__always_inline__))
namespace megdnn {
namespace {

template <
        int weight_number, int base_offset, int ptr_step, int oc_block, typename Func,
        typename T, typename T2, typename... XT>
struct LoadHelper {
    static __ai void impl(T& weight, T2 ptr, int oc_offset, XT... args);
};

#define WEIGHT_CB(step) \
    src[step] = Func::impl(ptr + base_offset + step * ptr_step, args...);

#define LOAD_HELPER(step)                                                          \
    template <                                                                     \
            int base_offset, int ptr_step, typename Func, typename T, typename T2, \
            typename... XT>                                                        \
    struct LoadHelper<step, base_offset, ptr_step, 0, Func, T, T2, XT...> {        \
        static __ai void impl(T& src, T2 ptr, int, XT... args) {                   \
            UNROLL_CALL_RAW(step, WEIGHT_CB);                                      \
        }                                                                          \
    }

LOAD_HELPER(1);
LOAD_HELPER(2);
LOAD_HELPER(3);
LOAD_HELPER(4);
LOAD_HELPER(5);
LOAD_HELPER(6);
LOAD_HELPER(7);
LOAD_HELPER(8);
LOAD_HELPER(9);
LOAD_HELPER(10);
LOAD_HELPER(11);
LOAD_HELPER(12);
LOAD_HELPER(13);
LOAD_HELPER(14);
LOAD_HELPER(15);
LOAD_HELPER(16);

#undef LOAD_HELPER
#undef WEIGHT_CB

///////////////////////////c_dim = 1/////////////////////////
#define WEIGHT_CB(step) src[0][step] = Func::impl(ptr + base_offset + step * ptr_step);

#define LOAD_HELPER(step)                                                            \
    template <int base_offset, int ptr_step, typename Func, typename T, typename T2> \
    struct LoadHelper<step, base_offset, ptr_step, 1, Func, T, T2> {                 \
        static __ai void impl(T& src, T2 ptr, int) {                                 \
            UNROLL_CALL_RAW(step, WEIGHT_CB);                                        \
        }                                                                            \
    }

LOAD_HELPER(1);
LOAD_HELPER(2);
LOAD_HELPER(3);
LOAD_HELPER(4);
LOAD_HELPER(5);
LOAD_HELPER(6);
LOAD_HELPER(7);
LOAD_HELPER(8);
LOAD_HELPER(9);

#undef LOAD_HELPER
#undef WEIGHT_CB

/////////////////////////c_dim = 2///////////////////////////////
#define WEIGHT_CB(step)                                             \
    src[0][step] = Func::impl(ptr + base_offset + step * ptr_step); \
    src[1][step] = Func::impl(ptr + base_offset + step * ptr_step + oc_offset);

#define LOAD_HELPER(step)                                                            \
    template <int base_offset, int ptr_step, typename Func, typename T, typename T2> \
    struct LoadHelper<step, base_offset, ptr_step, 2, Func, T, T2> {                 \
        static __ai void impl(T& src, T2 ptr, int oc_offset) {                       \
            UNROLL_CALL_RAW(step, WEIGHT_CB);                                        \
        }                                                                            \
    }

LOAD_HELPER(1);
LOAD_HELPER(2);
LOAD_HELPER(3);
LOAD_HELPER(4);
LOAD_HELPER(5);
LOAD_HELPER(6);
LOAD_HELPER(7);
LOAD_HELPER(8);

#undef LOAD_HELPER
#undef WEIGHT_CB

template <
        int weight_number, int base_offset, int ptr_step, int c_dim, typename Func,
        typename T, typename T2>
__ai void load_helper(T& weight, T2 ptr, int oc_offset) {
    LoadHelper<weight_number, base_offset, ptr_step, c_dim, Func, T, T2>::impl(
            weight, ptr, oc_offset);
}

template <
        int weight_number, int base_offset, int ptr_step, int c_dim, typename Func,
        typename T, typename T2, typename... XT>
__ai void load_helper_x(T& weight, T2 ptr, int oc_offset, XT... args) {
    LoadHelper<weight_number, base_offset, ptr_step, c_dim, Func, T, T2, XT...>::impl(
            weight, ptr, oc_offset, args...);
}

}  // namespace
}  // namespace megdnn
#undef __ai

// vim: syntax=cpp.doxygen