megenginelite-sys 1.8.2

A safe megenginelite wrapper in Rust
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121

/**
 * \file dnn/src/x86/avx_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 "megdnn/arch.h"

#include <immintrin.h>
#ifdef WIN32
#include <avx2intrin.h>
#include <avxintrin.h>
#include <fmaintrin.h>
#endif

#if !defined(__clang__)
#pragma GCC target("avx")
#endif

namespace megdnn {
namespace x86 {

MEGDNN_ATTRIBUTE_TARGET("avx")
static inline __m256 _mm256_loadu2_m128_emulate(
        const float* hiaddr, const float* loaddr) {
    return _mm256_insertf128_ps(
            _mm256_castps128_ps256(_mm_loadu_ps(loaddr)), _mm_loadu_ps(hiaddr), 1);
}

MEGDNN_ATTRIBUTE_TARGET("avx")
static inline void _mm256_storeu2_m128_emulate(
        float* hiaddr, float* loaddr, __m256 reg) {
    auto xmm0 = _mm256_extractf128_ps(reg, 0);
    auto xmm1 = _mm256_extractf128_ps(reg, 1);
    _mm_storeu_ps(loaddr, xmm0);
    _mm_storeu_ps(hiaddr, xmm1);
}

template <typename ctype, size_t len>
struct Vector;

template <>
struct Vector<float, 8> {
    __m256 value;
    Vector() {}
    Vector(const float v) MEGDNN_ATTRIBUTE_TARGET("avx") { value = _mm256_set1_ps(v); }
    Vector(const Vector& lr) MEGDNN_ATTRIBUTE_TARGET("avx") { value = lr.value; }
    Vector(const Vector&& lr) MEGDNN_ATTRIBUTE_TARGET("avx") {
        value = std::move(lr.value);
    }
    Vector(const __m256& v) MEGDNN_ATTRIBUTE_TARGET("avx") { value = v; }
    static Vector load(const float* addr) MEGDNN_ATTRIBUTE_TARGET("avx") {
        Vector v;
        v.value = _mm256_loadu_ps(addr);
        return v;
    }
    static void save(float* addr, const Vector& v) MEGDNN_ATTRIBUTE_TARGET("avx") {
        _mm256_storeu_ps(addr, v.value);
    }
    void save(float* addr) MEGDNN_ATTRIBUTE_TARGET("avx") { save(addr, *this); }
    Vector operator+(const Vector& lr) MEGDNN_ATTRIBUTE_TARGET("avx") {
        Vector dst;
        dst.value = _mm256_add_ps(value, lr.value);
        return dst;
    }
    Vector& operator+=(const Vector& lr) MEGDNN_ATTRIBUTE_TARGET("avx") {
        value = _mm256_add_ps(value, lr.value);
        return *this;
    }
    Vector operator-(const Vector& lr) MEGDNN_ATTRIBUTE_TARGET("avx") {
        Vector dst;
        dst.value = _mm256_sub_ps(value, lr.value);
        return dst;
    }
    Vector& operator-=(const Vector& lr) MEGDNN_ATTRIBUTE_TARGET("avx") {
        value = _mm256_sub_ps(value, lr.value);
        return *this;
    }
    Vector operator*(float lr) MEGDNN_ATTRIBUTE_TARGET("avx") {
        Vector dst;
        dst.value = _mm256_mul_ps(value, _mm256_set1_ps(lr));
        return dst;
    }
    Vector operator*(const Vector& lr) MEGDNN_ATTRIBUTE_TARGET("avx") {
        Vector dst;
        dst.value = _mm256_mul_ps(value, lr.value);
        return dst;
    }
    Vector& operator*=(const Vector& lr) MEGDNN_ATTRIBUTE_TARGET("avx") {
        value = _mm256_mul_ps(value, lr.value);
        return *this;
    }
    Vector& operator=(const Vector& lr) MEGDNN_ATTRIBUTE_TARGET("avx") {
        value = lr.value;
        return *this;
    }
    Vector& operator=(const Vector&& lr) MEGDNN_ATTRIBUTE_TARGET("avx") {
        value = std::move(lr.value);
        return *this;
    }
    Vector operator-() MEGDNN_ATTRIBUTE_TARGET("avx") {
        Vector dst;
        dst.value = -value;
        return dst;
    }
};

#if !defined(__clang__)
#pragma GCC reset_options
#endif

}  // namespace x86
}  // namespace megdnn

// vim: syntax=cpp.doxygen