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1// Copyright 2021 Google LLC
2//
3// This source code is licensed under the BSD-style license found in the
4// LICENSE file in the root directory of this source tree.
5
6$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
7$assert REQUANTIZATION == "FP32"
8$assert DATATYPE in ["QC8", "QS8"]
9$assert CHANNEL_TILE % 16 == 0
10$assert CHANNEL_TILE >= 16
11$assert KERNEL_TILE >= 2
12#include <assert.h>
13
14#include <immintrin.h>
15
16#include <xnnpack/dwconv.h>
17
18
19$PARAMS_STRUCT = "avx2" if DATATYPE == "QC8" else REQUANTIZATION.lower() + "_avx2"
20$PARAMS_UNION = "xnn_qs8_minmax_params" if DATATYPE == "QC8" else "xnn_qs8_conv_minmax_params"
21void xnn_${DATATYPE.lower()}_dwconv_minmax_${REQUANTIZATION.lower()}_ukernel_up${CHANNEL_TILE}x${KERNEL_TILE}__avx2_mul16${"_add16" if ADD16 else ""}_vpunpck(
22    size_t channels,
23    size_t output_width,
24    const int8_t** input,
25    const void* weights,
26    int8_t* output,
27    size_t input_stride,
28    size_t output_increment,
29    size_t input_offset,
30    const int8_t* zero,
31    const union ${PARAMS_UNION} params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
32{
33  assert(channels != 0);
34  assert(output_width != 0);
35
36  do {
37    $for K in range(KERNEL_TILE):
38      const int8_t* i${K} = input[${K}];
39      assert(i${K} != NULL);
40      if XNN_UNPREDICTABLE(i${K} != zero) {
41        i${K} = (const int8_t*) ((uintptr_t) i${K} + input_offset);
42      }
43    input = (const int8_t**) ((uintptr_t) input + input_stride);
44
45    size_t c = channels;
46    const void* w = weights;
47    for (; c >= ${CHANNEL_TILE}; c -= ${CHANNEL_TILE}) {
48      __m256i vacc${ABC[0:8]} = _mm256_loadu_si256((const __m256i*) w);
49      $for C in range(8, CHANNEL_TILE, 8):
50        __m256i vacc${ABC[C:C+8]} = _mm256_loadu_si256((const __m256i*) ((uintptr_t) w + ${C} * sizeof(int32_t)));
51
52      $for C in range(0, CHANNEL_TILE, 16):
53        __m256i vacc${ABC[C:C+4]}${ABC[C+8:C+12]} = _mm256_inserti128_si256(vacc${ABC[C:C+8]}, _mm256_castsi256_si128(vacc${ABC[C+8:C+16]}), 1);
54        __m256i vacc${ABC[C+4:C+8]}${ABC[C+12:C+16]} = _mm256_permute2x128_si256(vacc${ABC[C:C+8]}, vacc${ABC[C+8:C+16]}, 0x31);
55
56      $for K in range(KERNEL_TILE):
57
58        $for C in range(0, CHANNEL_TILE, 16):
59          $if C == 0:
60            const __m256i vi${K}x${ABC[0:16]} = _mm256_cvtepi8_epi16(_mm_loadu_si128((const __m128i*) i${K}));
61          $else:
62            const __m256i vi${K}x${ABC[C:C+16]} = _mm256_cvtepi8_epi16(_mm_loadu_si128((const __m128i*) (i${K} + ${C})));
63          const __m256i vk${K}x${ABC[C:C+16]} = _mm256_cvtepi8_epi16(_mm_loadu_si128((const __m128i*) ((uintptr_t) w + ${CHANNEL_TILE} * sizeof(int32_t) + ${K * CHANNEL_TILE + C} * sizeof(int8_t))));
64        i${K} += ${CHANNEL_TILE};
65
66        $if ADD16:
67          $for C in range(0, CHANNEL_TILE, 16):
68            $if K == 0:
69              __m256i vacc${ABC[C:C+16]} = _mm256_mullo_epi16(vi${K}x${ABC[C:C+16]}, vk${K}x${ABC[C:C+16]});
70            $elif K % 2 == 0 or K + 1 == KERNEL_TILE:
71              vacc${ABC[C:C+16]} = _mm256_mullo_epi16(vi${K}x${ABC[C:C+16]}, vk${K}x${ABC[C:C+16]});
72            $else:
73              vacc${ABC[C:C+16]} = _mm256_add_epi16(vacc${ABC[C:C+16]}, _mm256_mullo_epi16(vi${K}x${ABC[C:C+16]}, vk${K}x${ABC[C:C+16]}));
74
75          $if K % 2 == 1 or K + 1 == KERNEL_TILE:
76            $for C in range(0, CHANNEL_TILE, 16):
77              $if K == 1:
78                __m256i vsignacc${ABC[C:C+16]} = _mm256_srai_epi16(vacc${ABC[C:C+16]}, 15);
79              $else:
80                vsignacc${ABC[C:C+16]} = _mm256_srai_epi16(vacc${ABC[C:C+16]}, 15);
81              vacc${ABC[C:C+4]}${ABC[C+8:C+12]} = _mm256_add_epi32(vacc${ABC[C:C+4]}${ABC[C+8:C+12]}, _mm256_unpacklo_epi16(vacc${ABC[C:C+16]}, vsignacc${ABC[C:C+16]}));
82              vacc${ABC[C+4:C+8]}${ABC[C+12:C+16]} = _mm256_add_epi32(vacc${ABC[C+4:C+8]}${ABC[C+12:C+16]}, _mm256_unpackhi_epi16(vacc${ABC[C:C+16]}, vsignacc${ABC[C:C+16]}));
83        $else:
84          $for C in range(0, CHANNEL_TILE, 16):
85            const __m256i vprod${K}x${ABC[C:C+16]}lo =  _mm256_mullo_epi16(vi${K}x${ABC[C:C+16]}, vk${K}x${ABC[C:C+16]});
86            const __m256i vprod${K}x${ABC[C:C+16]}hi = _mm256_srai_epi16(vprod${K}x${ABC[C:C+16]}lo, 15);
87
88          $for C in range(0, CHANNEL_TILE, 16):
89            vacc${ABC[C:C+4]}${ABC[C+8:C+12]} = _mm256_add_epi32(vacc${ABC[C:C+4]}${ABC[C+8:C+12]}, _mm256_unpacklo_epi16(vprod${K}x${ABC[C:C+16]}lo, vprod${K}x${ABC[C:C+16]}hi));
90            vacc${ABC[C+4:C+8]}${ABC[C+12:C+16]} = _mm256_add_epi32(vacc${ABC[C+4:C+8]}${ABC[C+12:C+16]}, _mm256_unpackhi_epi16(vprod${K}x${ABC[C:C+16]}lo, vprod${K}x${ABC[C:C+16]}hi));
91
92      w = (const void*) ((uintptr_t) w + ${CHANNEL_TILE} * sizeof(int32_t) + ${KERNEL_TILE * CHANNEL_TILE} * sizeof(int8_t));
93
94      $for C in range(0, CHANNEL_TILE, 16):
95        vacc${ABC[C:C+8]} = _mm256_inserti128_si256(vacc${ABC[C:C+4]}${ABC[C+8:C+12]}, _mm256_castsi256_si128(vacc${ABC[C+4:C+8]}${ABC[C+12:C+16]}), 1);
96        vacc${ABC[C+8:C+16]} = _mm256_permute2x128_si256(vacc${ABC[C:C+4]}${ABC[C+8:C+12]}, vacc${ABC[C+4:C+8]}${ABC[C+12:C+16]}, 0x31);
97
98      $for C in range(0, CHANNEL_TILE, 8):
99        __m256 vfpacc${ABC[C:C+8]} = _mm256_cvtepi32_ps(vacc${ABC[C:C+8]});
100
101      $if DATATYPE == "QC8":
102        const __m256 vscale${ABC[0:8]} = _mm256_loadu_ps((const float*) w);
103        $for C in range(8, CHANNEL_TILE, 8):
104          const __m256 vscale${ABC[C:C+8]} = _mm256_loadu_ps((const float*) ((uintptr_t) w + ${C} * sizeof(float)));
105        w = (const void*) ((uintptr_t) w + ${CHANNEL_TILE} * sizeof(float));
106        $for C in range(0, CHANNEL_TILE, 8):
107          vfpacc${ABC[C:C+8]} = _mm256_mul_ps(vfpacc${ABC[C:C+8]}, vscale${ABC[C:C+8]});
108      $else:
109        const __m256 vscale = _mm256_load_ps(params->fp32_avx2.scale);
110        $for C in range(0, CHANNEL_TILE, 8):
111          vfpacc${ABC[C:C+8]} = _mm256_mul_ps(vfpacc${ABC[C:C+8]}, vscale);
112
113      const __m256 voutput_max_less_zero_point = _mm256_load_ps(params->${PARAMS_STRUCT}.output_max_less_zero_point);
114      $for C in range(0, CHANNEL_TILE, 8):
115        vfpacc${ABC[C:C+8]} = _mm256_min_ps(vfpacc${ABC[C:C+8]}, voutput_max_less_zero_point);
116
117      $for C in range(0, CHANNEL_TILE, 8):
118        vacc${ABC[C:C+8]} = _mm256_cvtps_epi32(vfpacc${ABC[C:C+8]});
119
120      const __m256i voutput_zero_point = _mm256_load_si256((const __m256i*) params->${PARAMS_STRUCT}.output_zero_point);
121      $for C in range(0, CHANNEL_TILE, 16):
122        const __m256i vout${ABC[C:C+4]}${ABC[C+8:C+12]}${ABC[C+4:C+8]}${ABC[C+12:C+16]} = _mm256_adds_epi16(_mm256_packs_epi32(vacc${ABC[C:C+8]}, vacc${ABC[C+8:C+16]}), voutput_zero_point);
123
124      $for C in range(0, CHANNEL_TILE, 16):
125        __m128i vout${ABC[C:C+16]} = _mm_shuffle_epi32(_mm_packs_epi16(_mm256_castsi256_si128(vout${ABC[C:C+4]}${ABC[C+8:C+12]}${ABC[C+4:C+8]}${ABC[C+12:C+16]}), _mm256_extracti128_si256(vout${ABC[C:C+4]}${ABC[C+8:C+12]}${ABC[C+4:C+8]}${ABC[C+12:C+16]}, 1)), _MM_SHUFFLE(3, 1, 2, 0));
126
127      const __m128i voutput_min = _mm_load_si128((const __m128i*) params->${PARAMS_STRUCT}.output_min);
128      $for C in range(0, CHANNEL_TILE, 16):
129        vout${ABC[C:C+16]} = _mm_max_epi8(vout${ABC[C:C+16]}, voutput_min);
130
131      _mm_storeu_si128((__m128i*) output, vout${ABC[0:16]});
132      $for C in range(16, CHANNEL_TILE, 16):
133        _mm_storeu_si128((__m128i*) (output + ${C}), vout${ABC[C:C+16]});
134      output += ${CHANNEL_TILE};
135    }
136    if XNN_UNLIKELY(c != 0) {
137      $if CHANNEL_TILE > 16:
138        const int8_t* k = (const int8_t*) ((uintptr_t) w + ${CHANNEL_TILE} * sizeof(int32_t));
139      ${"do " if CHANNEL_TILE > 16 else ""}{
140        __m256i vacc${ABC[0:8]} = _mm256_loadu_si256((const __m256i*) w);
141        __m256i vacc${ABC[8:16]} = _mm256_loadu_si256((const __m256i*) ((uintptr_t) w + 8 * sizeof(int32_t)));
142
143        __m256i vacc${ABC[0:4]}${ABC[8:12]} = _mm256_inserti128_si256(vacc${ABC[0:8]}, _mm256_castsi256_si128(vacc${ABC[8:16]}), 1);
144        __m256i vacc${ABC[4:8]}${ABC[12:16]} = _mm256_permute2x128_si256(vacc${ABC[0:8]}, vacc${ABC[8:16]}, 0x31);
145
146        $for K in range(KERNEL_TILE):
147
148          const __m256i vi${K}x${ABC[0:16]} = _mm256_cvtepi8_epi16(_mm_loadu_si128((const __m128i*) i${K}));
149          $if CHANNEL_TILE > 16:
150            $if K == 0:
151              const __m256i vk${K}x${ABC[0:16]} = _mm256_cvtepi8_epi16(_mm_loadu_si128((const __m128i*) k));
152            $else:
153              const __m256i vk${K}x${ABC[0:16]} = _mm256_cvtepi8_epi16(_mm_loadu_si128((const __m128i*) (k + ${K * CHANNEL_TILE})));
154          $else:
155            const __m256i vk${K}x${ABC[0:16]} = _mm256_cvtepi8_epi16(_mm_loadu_si128((const __m128i*) ((uintptr_t) w + ${CHANNEL_TILE} * sizeof(int32_t) + ${K * CHANNEL_TILE} * sizeof(int8_t))));
156          $if CHANNEL_TILE > 16:
157            i${K} += 16;
158
159          const __m256i vprod${K}x${ABC[0:16]}lo =  _mm256_mullo_epi16(vi${K}x${ABC[0:16]}, vk${K}x${ABC[0:16]});
160          const __m256i vprod${K}x${ABC[0:16]}hi = _mm256_srai_epi16(vprod${K}x${ABC[0:16]}lo, 15);
161
162          vacc${ABC[0:4]}${ABC[8:12]} = _mm256_add_epi32(vacc${ABC[0:4]}${ABC[8:12]}, _mm256_unpacklo_epi16(vprod${K}x${ABC[0:16]}lo, vprod${K}x${ABC[0:16]}hi));
163          vacc${ABC[4:8]}${ABC[12:16]} = _mm256_add_epi32(vacc${ABC[4:8]}${ABC[12:16]}, _mm256_unpackhi_epi16(vprod${K}x${ABC[0:16]}lo, vprod${K}x${ABC[0:16]}hi));
164
165        vacc${ABC[0:8]} = _mm256_inserti128_si256(vacc${ABC[0:4]}${ABC[8:12]}, _mm256_castsi256_si128(vacc${ABC[4:8]}${ABC[12:16]}), 1);
166        vacc${ABC[8:16]} = _mm256_permute2x128_si256(vacc${ABC[0:4]}${ABC[8:12]}, vacc${ABC[4:8]}${ABC[12:16]}, 0x31);
167
168        $if CHANNEL_TILE > 16:
169          k += 16;
170
171        __m256 vfpacc${ABC[0:8]} = _mm256_cvtepi32_ps(vacc${ABC[0:8]});
172        __m256 vfpacc${ABC[8:16]} = _mm256_cvtepi32_ps(vacc${ABC[8:16]});
173
174        $if DATATYPE == "QC8":
175          const __m256 vscale${ABC[0:8]} = _mm256_loadu_ps((const float*) ((uintptr_t) w + ${CHANNEL_TILE} * sizeof(int32_t) + ${CHANNEL_TILE * KERNEL_TILE} * sizeof(int8_t)));
176          const __m256 vscale${ABC[8:16]} = _mm256_loadu_ps((const float*) ((uintptr_t) w + ${CHANNEL_TILE} * sizeof(int32_t) + ${CHANNEL_TILE * KERNEL_TILE} * sizeof(int8_t) + 8 * sizeof(float)));
177          vfpacc${ABC[0:8]} = _mm256_mul_ps(vfpacc${ABC[0:8]}, vscale${ABC[0:8]});
178          vfpacc${ABC[8:16]} = _mm256_mul_ps(vfpacc${ABC[8:16]}, vscale${ABC[8:16]});
179        $else:
180          const __m256 vscale = _mm256_load_ps(params->fp32_avx2.scale);
181          vfpacc${ABC[0:8]} = _mm256_mul_ps(vfpacc${ABC[0:8]}, vscale);
182          vfpacc${ABC[8:16]} = _mm256_mul_ps(vfpacc${ABC[8:16]}, vscale);
183
184        const __m256 voutput_max_less_zero_point = _mm256_load_ps(params->${PARAMS_STRUCT}.output_max_less_zero_point);
185        vfpacc${ABC[0:8]} = _mm256_min_ps(vfpacc${ABC[0:8]}, voutput_max_less_zero_point);
186        vfpacc${ABC[8:16]} = _mm256_min_ps(vfpacc${ABC[8:16]}, voutput_max_less_zero_point);
187
188        vacc${ABC[0:8]} = _mm256_cvtps_epi32(vfpacc${ABC[0:8]});
189        vacc${ABC[8:16]} = _mm256_cvtps_epi32(vfpacc${ABC[8:16]});
190
191        $if CHANNEL_TILE > 16:
192          w = (const void*) ((uintptr_t) w + 16 * sizeof(int32_t));
193
194        const __m128i voutput_zero_point = _mm_load_si128((const __m128i*) params->${PARAMS_STRUCT}.output_zero_point);
195        __m128i vout${ABC[0:8]} = _mm_adds_epi16(_mm_packs_epi32(_mm256_castsi256_si128(vacc${ABC[0:8]}), _mm256_extracti128_si256(vacc${ABC[0:8]}, 1)), voutput_zero_point);
196        __m128i vout${ABC[8:16]} = _mm_adds_epi16(_mm_packs_epi32(_mm256_castsi256_si128(vacc${ABC[8:16]}), _mm256_extracti128_si256(vacc${ABC[8:16]}, 1)), voutput_zero_point);
197
198        const __m128i voutput_min = _mm_load_si128((const __m128i*) params->${PARAMS_STRUCT}.output_min);
199
200        __m128i vout${ABC[0:16]} = _mm_packs_epi16(vout${ABC[0:8]}, vout${ABC[8:16]});
201        vout${ABC[0:16]} = _mm_max_epi8(vout${ABC[0:16]}, voutput_min);
202
203        $if CHANNEL_TILE > 16:
204          if XNN_LIKELY(c >= 16) {
205            _mm_storeu_si128((__m128i*) output, vout${ABC[0:16]});
206            output += 16;
207            c -= 16;
208          } else {
209            if (c & 8) {
210              _mm_storel_epi64((__m128i*) output, vout${ABC[0:16]});
211              vout${ABC[0:16]} = _mm_unpackhi_epi64(vout${ABC[0:16]}, vout${ABC[0:16]});
212              output += 8;
213            }
214            if (c & 4) {
215              *((uint32_t*) output) = (uint32_t) _mm_cvtsi128_si32(vout${ABC[0:16]});
216              vout${ABC[0:16]} = _mm_srli_epi64(vout${ABC[0:16]}, 32);
217              output += 4;
218            }
219            if (c & 2) {
220              *((uint16_t*) output) = (uint16_t) _mm_extract_epi16(vout${ABC[0:16]}, 0);
221              vout${ABC[0:16]} = _mm_srli_epi32(vout${ABC[0:16]}, 16);
222              output += 2;
223            }
224            if (c & 1) {
225              *output = (int8_t) _mm_extract_epi8(vout${ABC[0:16]}, 0);
226              output += 1;
227            }
228            c = 0;
229          }
230        $else:
231          if (c & 8) {
232            _mm_storel_epi64((__m128i*) output, vout${ABC[0:16]});
233            vout${ABC[0:16]} = _mm_unpackhi_epi64(vout${ABC[0:16]}, vout${ABC[0:16]});
234            output += 8;
235          }
236          if (c & 4) {
237            *((uint32_t*) output) = (uint32_t) _mm_cvtsi128_si32(vout${ABC[0:16]});
238            vout${ABC[0:16]} = _mm_srli_epi64(vout${ABC[0:16]}, 32);
239            output += 4;
240          }
241          if (c & 2) {
242            *((uint16_t*) output) = (uint16_t) _mm_extract_epi16(vout${ABC[0:16]}, 0);
243            vout${ABC[0:16]} = _mm_srli_epi32(vout${ABC[0:16]}, 16);
244            output += 2;
245          }
246          if (c & 1) {
247            *output = (int8_t) _mm_extract_epi8(vout${ABC[0:16]}, 0);
248            output += 1;
249          }
250      }${" while (c != 0);" if CHANNEL_TILE > 16 else ""}
251    }
252
253    output = (int8_t*) ((uintptr_t) output + output_increment);
254  } while (--output_width != 0);
255}
256