Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 1 | // Copyright (c) Facebook, Inc. and its affiliates. |
| 2 | // All rights reserved. |
| 3 | // |
| 4 | // Copyright 2019 Google LLC |
| 5 | // |
| 6 | // This source code is licensed under the BSD-style license found in the |
| 7 | // LICENSE file in the root directory of this source tree. |
| 8 | |
| 9 | #pragma once |
| 10 | |
| 11 | #if defined(__cplusplus) && (__cplusplus >= 201103L) |
| 12 | #include <cstdint> |
| 13 | #include <cstddef> |
| 14 | #include <cassert> |
| 15 | #include <cmath> |
| 16 | #else |
| 17 | #include <stdint.h> |
| 18 | #include <stddef.h> |
| 19 | #include <assert.h> |
| 20 | #include <math.h> |
| 21 | #endif |
| 22 | |
| 23 | #include <fp16.h> |
| 24 | |
| 25 | #include <xnnpack/common.h> |
Marat Dukhan | 2b9efd8 | 2020-06-08 01:09:31 -0700 | [diff] [blame] | 26 | #include <xnnpack/math.h> |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 27 | #include <xnnpack/params.h> |
| 28 | |
| 29 | |
| 30 | static inline union xnn_q8_gemm_params xnn_init_scalar_q8_gemm_params( |
| 31 | uint8_t input_zero_point, |
| 32 | uint8_t kernel_zero_point, |
| 33 | float scale, |
| 34 | uint8_t output_zero_point, |
| 35 | uint8_t output_min, |
| 36 | uint8_t output_max) |
| 37 | { |
| 38 | // Compute requantization parameters |
| 39 | const uint32_t scale_bits = fp32_to_bits(scale); |
| 40 | |
| 41 | // Multiplier is in [0x40000000, 0x7FFFFF80] range. |
| 42 | const int32_t multiplier = (int32_t)(((scale_bits & UINT32_C(0x007FFFFF)) | UINT32_C(0x00800000)) << 7); |
| 43 | assert(multiplier >= INT32_C(0x40000000)); |
| 44 | assert(multiplier <= INT32_C(0x7FFFFF80)); |
| 45 | |
| 46 | // Shift is in [0, 31] range. |
| 47 | const int32_t shift = 127 + 31 - 32 - (fp32_to_bits(scale) >> 23); |
| 48 | assert(shift >= 0); |
| 49 | assert(shift < 32); |
| 50 | |
| 51 | const uint32_t remainder_mask = (UINT32_C(1) << shift) - UINT32_C(1); |
| 52 | const uint32_t remainder_threshold = remainder_mask >> 1; |
| 53 | |
| 54 | union xnn_q8_gemm_params params; |
| 55 | params.scalar.input_zero_point = (int32_t) (uint32_t) input_zero_point; |
| 56 | params.scalar.kernel_zero_point = (int32_t) (uint32_t) kernel_zero_point; |
| 57 | params.scalar.multiplier = multiplier; |
| 58 | params.scalar.remainder_mask = (int32_t) remainder_mask; |
| 59 | params.scalar.remainder_threshold = (int32_t) remainder_threshold; |
| 60 | params.scalar.shift = (uint32_t) shift; |
| 61 | params.scalar.output_min_less_zero_point = |
| 62 | (int32_t) (uint32_t) output_min - (int32_t) (uint32_t) output_zero_point; |
| 63 | params.scalar.output_max_less_zero_point = |
| 64 | (int32_t) (uint32_t) output_max - (int32_t) (uint32_t) output_zero_point; |
| 65 | params.scalar.output_zero_point = (int32_t) (uint32_t) output_zero_point; |
| 66 | return params; |
| 67 | } |
| 68 | |
| 69 | static inline union xnn_q8_gemm_params xnn_init_q8_gemm_params( |
| 70 | uint8_t input_zero_point, |
| 71 | uint8_t kernel_zero_point, |
| 72 | float scale, |
| 73 | uint8_t output_zero_point, |
| 74 | uint8_t output_min, |
| 75 | uint8_t output_max) |
| 76 | { |
| 77 | // Compute requantization parameters. |
| 78 | const uint32_t scale_bits = fp32_to_bits(scale); |
| 79 | |
| 80 | // Multiplier is in [0x40000000, 0x7FFFFF80] range. |
| 81 | const int32_t multiplier = (int32_t)(((scale_bits & UINT32_C(0x007FFFFF)) | UINT32_C(0x00800000)) << 7); |
| 82 | assert(multiplier >= INT32_C(0x40000000)); |
| 83 | assert(multiplier <= INT32_C(0x7FFFFF80)); |
| 84 | |
| 85 | // Shift is in [0, 31] range. |
| 86 | const int32_t shift = 127 + 31 - 32 - (fp32_to_bits(scale) >> 23); |
| 87 | assert(shift >= 0); |
| 88 | assert(shift < 32); |
| 89 | |
| 90 | union xnn_q8_gemm_params params; |
| 91 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 92 | const uint32_t remainder_mask = (UINT32_C(1) << shift) - UINT32_C(1); |
| 93 | const uint32_t remainder_threshold = remainder_mask >> 1; |
| 94 | for (uint32_t i = 0; i < 8; i++) { |
| 95 | params.sse2.input_zero_point[i] = (int16_t) (uint16_t) input_zero_point; |
| 96 | params.sse2.kernel_zero_point[i] = (int16_t) (uint16_t) kernel_zero_point; |
| 97 | } |
| 98 | params.sse2.multiplier[0] = multiplier; |
| 99 | params.sse2.multiplier[1] = multiplier; |
| 100 | params.sse2.multiplier[2] = multiplier; |
| 101 | params.sse2.multiplier[3] = multiplier; |
| 102 | params.sse2.rounding[0] = UINT64_C(0x40000000); |
| 103 | params.sse2.rounding[1] = UINT64_C(0x40000000); |
| 104 | params.sse2.remainder_mask[0] = (int32_t) remainder_mask; |
| 105 | params.sse2.remainder_mask[1] = (int32_t) remainder_mask; |
| 106 | params.sse2.remainder_mask[2] = (int32_t) remainder_mask; |
| 107 | params.sse2.remainder_mask[3] = (int32_t) remainder_mask; |
| 108 | params.sse2.remainder_threshold[0] = (int32_t) remainder_threshold; |
| 109 | params.sse2.remainder_threshold[1] = (int32_t) remainder_threshold; |
| 110 | params.sse2.remainder_threshold[2] = (int32_t) remainder_threshold; |
| 111 | params.sse2.remainder_threshold[3] = (int32_t) remainder_threshold; |
| 112 | params.sse2.shift[0] = (uint64_t) (uint32_t) shift; |
| 113 | params.sse2.shift[1] = (uint64_t) (uint32_t) shift; |
| 114 | for (uint32_t i = 0; i < 8; i++) { |
| 115 | params.sse2.output_zero_point[i] = (int16_t) (uint16_t) output_zero_point; |
| 116 | } |
| 117 | for (uint32_t i = 0; i < 16; i++) { |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 118 | params.sse2.output_min[i] = output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 119 | params.sse2.output_max[i] = output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 120 | } |
| 121 | #elif XNN_ARCH_ARM || XNN_ARCH_ARM64 |
| 122 | params.neon.input_zero_point = (int16_t) (uint16_t) input_zero_point; |
| 123 | params.neon.kernel_zero_point = (int16_t) (uint16_t) kernel_zero_point; |
| 124 | params.neon.multiplier = multiplier; |
| 125 | params.neon.right_shift = -shift; |
| 126 | params.neon.output_zero_point = (int16_t) (uint16_t) output_zero_point; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 127 | params.neon.output_min = output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 128 | params.neon.output_max = output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 129 | #else |
| 130 | const uint32_t remainder_mask = (UINT32_C(1) << shift) - UINT32_C(1); |
| 131 | const uint32_t remainder_threshold = remainder_mask >> 1; |
| 132 | params.scalar.input_zero_point = (int32_t) (uint32_t) input_zero_point; |
| 133 | params.scalar.kernel_zero_point = (int32_t) (uint32_t) kernel_zero_point; |
| 134 | params.scalar.multiplier = multiplier; |
| 135 | params.scalar.remainder_mask = (int32_t) remainder_mask; |
| 136 | params.scalar.remainder_threshold = (int32_t) remainder_threshold; |
| 137 | params.scalar.shift = (uint32_t) shift; |
| 138 | params.scalar.output_min_less_zero_point = |
| 139 | (int32_t) (uint32_t) output_min - (int32_t) (uint32_t) output_zero_point; |
| 140 | params.scalar.output_max_less_zero_point = |
| 141 | (int32_t) (uint32_t) output_max - (int32_t) (uint32_t) output_zero_point; |
| 142 | params.scalar.output_zero_point = (int32_t) (uint32_t) output_zero_point; |
| 143 | #endif |
| 144 | return params; |
| 145 | } |
| 146 | |
| 147 | static inline union xnn_q8_avgpool_params xnn_init_q8_avgpool_params( |
| 148 | int32_t bias, |
| 149 | float scale, |
| 150 | uint8_t output_zero_point, |
| 151 | uint8_t output_min, |
| 152 | uint8_t output_max) |
| 153 | { |
| 154 | // Compute requantization parameters. |
| 155 | assert(scale >= 0x1.0p-32f); |
| 156 | assert(scale < 256.0f); |
| 157 | const uint32_t scale_bits = fp32_to_bits(scale); |
| 158 | |
| 159 | // Multiplier is in [0x00800000, 0x00FFFFFF] range. |
| 160 | const int32_t multiplier = ((int32_t) scale_bits & INT32_C(0x007FFFFF)) | INT32_C(0x00800000); |
| 161 | assert(multiplier >= INT32_C(0x00800000)); |
| 162 | assert(multiplier <= INT32_C(0x00FFFFFF)); |
| 163 | |
| 164 | // Shift is in [16, 55] range. |
| 165 | const int32_t shift = 127 + 23 - (scale_bits >> 23); |
| 166 | assert(shift >= 16); |
| 167 | assert(shift < 64); |
| 168 | |
| 169 | union xnn_q8_avgpool_params params; |
| 170 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 171 | const uint32_t right_shift = (uint32_t) shift; |
| 172 | const uint64_t rounding = UINT64_C(1) << (right_shift - 1); |
| 173 | params.sse2.bias[0] = bias; |
| 174 | params.sse2.bias[1] = bias; |
| 175 | params.sse2.bias[2] = bias; |
| 176 | params.sse2.bias[3] = bias; |
| 177 | params.sse2.multiplier[0] = (uint32_t) multiplier; |
| 178 | params.sse2.multiplier[1] = (uint32_t) multiplier; |
| 179 | params.sse2.multiplier[2] = (uint32_t) multiplier; |
| 180 | params.sse2.multiplier[3] = (uint32_t) multiplier; |
| 181 | params.sse2.rounding[0] = rounding; |
| 182 | params.sse2.rounding[1] = rounding; |
| 183 | params.sse2.right_shift[0] = (uint64_t) right_shift; |
| 184 | params.sse2.right_shift[1] = (uint64_t) right_shift; |
| 185 | for (uint32_t i = 0; i < 8; i++) { |
| 186 | params.sse2.output_zero_point[i] = (int16_t) (uint16_t) output_zero_point; |
| 187 | } |
| 188 | for (uint32_t i = 0; i < 16; i++) { |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 189 | params.sse2.output_min[i] = output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 190 | params.sse2.output_max[i] = output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 191 | } |
| 192 | #elif XNN_ARCH_ARM || XNN_ARCH_ARM64 |
| 193 | params.neon.bias = bias; |
| 194 | params.neon.multiplier = multiplier; |
| 195 | params.neon.left_shift = (int64_t) -shift; |
| 196 | params.neon.output_zero_point = (int16_t) (uint16_t) output_zero_point; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 197 | params.neon.output_min = output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 198 | params.neon.output_max = output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 199 | #else |
| 200 | const uint32_t right_shift = (uint32_t) shift; |
| 201 | const int64_t rounding = INT64_C(1) << (right_shift - 1); |
| 202 | params.scalar.bias = bias; |
| 203 | params.scalar.multiplier = multiplier; |
| 204 | params.scalar.rounding = rounding; |
| 205 | params.scalar.right_shift = right_shift; |
| 206 | params.scalar.output_min_less_zero_point = |
| 207 | (int32_t) (uint32_t) output_min - (int32_t) (uint32_t) output_zero_point; |
| 208 | params.scalar.output_max_less_zero_point = |
| 209 | (int32_t) (uint32_t) output_max - (int32_t) (uint32_t) output_zero_point; |
| 210 | params.scalar.output_zero_point = (int32_t) (uint32_t) output_zero_point; |
| 211 | #endif |
| 212 | return params; |
| 213 | } |
| 214 | |
| 215 | static inline union xnn_q8_avgpool_params xnn_init_scalar_q8_avgpool_params( |
| 216 | int32_t bias, |
| 217 | float scale, |
| 218 | uint8_t output_zero_point, |
| 219 | uint8_t output_min, |
| 220 | uint8_t output_max) |
| 221 | { |
| 222 | // Compute requantization parameters. |
| 223 | assert(scale >= 0x1.0p-32f); |
| 224 | assert(scale < 256.0f); |
| 225 | const uint32_t scale_bits = fp32_to_bits(scale); |
| 226 | |
| 227 | // Multiplier is in [0x00800000, 0x00FFFFFF] range. |
| 228 | const int32_t multiplier = ((int32_t) scale_bits & INT32_C(0x007FFFFF)) | INT32_C(0x00800000); |
| 229 | assert(multiplier >= INT32_C(0x00800000)); |
| 230 | assert(multiplier <= INT32_C(0x00FFFFFF)); |
| 231 | |
| 232 | // Shift is in [16, 55] range. |
| 233 | const int32_t shift = 127 + 23 - (scale_bits >> 23); |
| 234 | assert(shift >= 16); |
| 235 | assert(shift < 64); |
| 236 | |
| 237 | union xnn_q8_avgpool_params params; |
| 238 | const uint32_t right_shift = (uint32_t) shift; |
| 239 | const int64_t rounding = INT64_C(1) << (right_shift - 1); |
| 240 | params.scalar.bias = bias; |
| 241 | params.scalar.rounding = rounding; |
| 242 | params.scalar.multiplier = multiplier; |
| 243 | params.scalar.right_shift = right_shift; |
| 244 | params.scalar.output_min_less_zero_point = |
| 245 | (int32_t) (uint32_t) output_min - (int32_t) (uint32_t) output_zero_point; |
| 246 | params.scalar.output_max_less_zero_point = |
| 247 | (int32_t) (uint32_t) output_max - (int32_t) (uint32_t) output_zero_point; |
| 248 | params.scalar.output_zero_point = (int32_t) (uint32_t) output_zero_point; |
| 249 | return params; |
| 250 | } |
| 251 | |
Marat Dukhan | 8452ff5 | 2020-04-08 20:44:58 -0700 | [diff] [blame] | 252 | static inline void xnn_update_f32_scaleminmax_params( |
| 253 | union xnn_f32_scaleminmax_params* params, |
| 254 | float scale) |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 255 | { |
| 256 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 257 | for (uint32_t i = 0; i < 4; i++) { |
Marat Dukhan | 8452ff5 | 2020-04-08 20:44:58 -0700 | [diff] [blame] | 258 | params->sse2.scale[i] = scale; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 259 | } |
| 260 | #else |
Marat Dukhan | 8452ff5 | 2020-04-08 20:44:58 -0700 | [diff] [blame] | 261 | params->scalar.scale = scale; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 262 | #endif |
| 263 | } |
| 264 | |
Marat Dukhan | 8452ff5 | 2020-04-08 20:44:58 -0700 | [diff] [blame] | 265 | static inline union xnn_f32_scaleminmax_params xnn_init_f32_scaleminmax_params( |
| 266 | float scale, |
| 267 | float min, |
| 268 | float max) |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 269 | { |
Marat Dukhan | 8452ff5 | 2020-04-08 20:44:58 -0700 | [diff] [blame] | 270 | union xnn_f32_scaleminmax_params params; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 271 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 272 | for (uint32_t i = 0; i < 4; i++) { |
Marat Dukhan | 8452ff5 | 2020-04-08 20:44:58 -0700 | [diff] [blame] | 273 | params.sse2.scale[i] = scale; |
| 274 | params.sse2.min[i] = min; |
| 275 | params.sse2.max[i] = max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 276 | } |
| 277 | #else |
Marat Dukhan | 8452ff5 | 2020-04-08 20:44:58 -0700 | [diff] [blame] | 278 | params.scalar.scale = scale; |
| 279 | params.scalar.min = min; |
| 280 | params.scalar.max = max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 281 | #endif |
| 282 | return params; |
| 283 | } |
| 284 | |
| 285 | static inline union xnn_f32_gavgpool_params xnn_init_f32_gavgpool_params( |
| 286 | float multiplier, |
| 287 | float output_min, |
| 288 | float output_max, |
| 289 | uint32_t width) |
| 290 | { |
| 291 | union xnn_f32_gavgpool_params params; |
| 292 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 293 | for (uint32_t i = 0; i < 4; i++) { |
| 294 | params.sse.multiplier[i] = multiplier; |
| 295 | params.sse.output_min[i] = output_min; |
| 296 | params.sse.output_max[i] = output_max; |
| 297 | } |
| 298 | |
| 299 | const uint32_t w = (width - 1) & 3; |
| 300 | params.sse.mask[0] = UINT32_C(0xFFFFFFFF); |
| 301 | params.sse.mask[1] = -(uint32_t) (w >= 1); |
| 302 | params.sse.mask[2] = -(uint32_t) (w >= 2); |
| 303 | params.sse.mask[3] = -(uint32_t) (w >= 3); |
| 304 | #elif XNN_ARCH_ARM || XNN_ARCH_ARM64 |
| 305 | params.neon.multiplier = multiplier; |
| 306 | params.neon.output_min = output_min; |
| 307 | params.neon.output_max = output_max; |
| 308 | |
| 309 | const uint32_t w = (width - 1) & 3; |
| 310 | params.neon.mask[0] = UINT32_C(0xFFFFFFFF); |
| 311 | params.neon.mask[1] = -(uint32_t) (w >= 1); |
| 312 | params.neon.mask[2] = -(uint32_t) (w >= 2); |
| 313 | params.neon.mask[3] = -(uint32_t) (w >= 3); |
| 314 | #else |
| 315 | params.scalar.multiplier = multiplier; |
| 316 | params.scalar.output_min = output_min; |
| 317 | params.scalar.output_max = output_max; |
| 318 | #endif |
| 319 | return params; |
| 320 | } |
| 321 | |
| 322 | static inline void xnn_update_f32_gavgpool_params( |
| 323 | union xnn_f32_gavgpool_params* params, |
| 324 | float multiplier, |
| 325 | uint32_t width) |
| 326 | { |
| 327 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 328 | for (uint32_t i = 0; i < 4; i++) { |
| 329 | params->sse.multiplier[i] = multiplier; |
| 330 | } |
| 331 | |
| 332 | const uint32_t w = (width - 1) & 3; |
| 333 | params->sse.mask[0] = UINT32_C(0xFFFFFFFF); |
| 334 | params->sse.mask[1] = -(uint32_t) (w >= 1); |
| 335 | params->sse.mask[2] = -(uint32_t) (w >= 2); |
| 336 | params->sse.mask[3] = -(uint32_t) (w >= 3); |
| 337 | #elif XNN_ARCH_ARM || XNN_ARCH_ARM64 |
| 338 | params->neon.multiplier = multiplier; |
| 339 | |
| 340 | const uint32_t w = (width - 1) & 3; |
| 341 | params->neon.mask[0] = UINT32_C(0xFFFFFFFF); |
| 342 | params->neon.mask[1] = -(uint32_t) (w >= 1); |
| 343 | params->neon.mask[2] = -(uint32_t) (w >= 2); |
| 344 | params->neon.mask[3] = -(uint32_t) (w >= 3); |
| 345 | #else |
| 346 | params->scalar.multiplier = multiplier; |
| 347 | #endif |
| 348 | } |
| 349 | |
Marat Dukhan | 8452ff5 | 2020-04-08 20:44:58 -0700 | [diff] [blame] | 350 | static inline union xnn_f32_scaleminmax_params xnn_init_scalar_f32_scaleminmax_params( |
| 351 | float scale, |
| 352 | float min, |
| 353 | float max) |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 354 | { |
Marat Dukhan | 8452ff5 | 2020-04-08 20:44:58 -0700 | [diff] [blame] | 355 | union xnn_f32_scaleminmax_params params; |
| 356 | params.scalar.scale = scale; |
| 357 | params.scalar.min = min; |
| 358 | params.scalar.max = max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 359 | return params; |
| 360 | } |
| 361 | |
| 362 | static inline union xnn_f32_gavgpool_params xnn_init_scalar_f32_gavgpool_params( |
| 363 | float multiplier, |
| 364 | float output_min, |
| 365 | float output_max, |
| 366 | uint32_t width) |
| 367 | { |
| 368 | union xnn_f32_gavgpool_params params; |
| 369 | params.scalar.multiplier = multiplier; |
| 370 | params.scalar.output_min = output_min; |
| 371 | params.scalar.output_max = output_max; |
| 372 | return params; |
| 373 | } |
| 374 | |
Frank Barchard | 99003a8 | 2020-05-04 10:39:38 -0700 | [diff] [blame] | 375 | static inline struct xnn_f16_scaleminmax_params xnn_init_f16_scaleminmax_params( |
| 376 | uint16_t scale, |
| 377 | uint16_t min, |
| 378 | uint16_t max) |
| 379 | { |
| 380 | struct xnn_f16_scaleminmax_params params; |
| 381 | params.scale = scale; |
| 382 | params.min = min; |
| 383 | params.max = max; |
| 384 | return params; |
| 385 | } |
| 386 | |
Frank Barchard | d793f6c | 2020-05-08 13:37:43 -0700 | [diff] [blame] | 387 | static inline struct xnn_f16_minmax_params xnn_init_f16_minmax_params( |
| 388 | uint16_t min, |
| 389 | uint16_t max) |
| 390 | { |
| 391 | struct xnn_f16_minmax_params params; |
| 392 | params.min = min; |
| 393 | params.max = max; |
| 394 | return params; |
| 395 | } |
| 396 | |
Marat Dukhan | eb09a6b | 2020-04-08 17:34:32 -0700 | [diff] [blame] | 397 | static inline union xnn_f32_minmax_params xnn_init_f32_minmax_params( |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 398 | float output_min, |
| 399 | float output_max) |
| 400 | { |
Marat Dukhan | eb09a6b | 2020-04-08 17:34:32 -0700 | [diff] [blame] | 401 | union xnn_f32_minmax_params params; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 402 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 403 | for (uint32_t i = 0; i < 4; i++) { |
| 404 | params.sse.min[i] = output_min; |
| 405 | params.sse.max[i] = output_max; |
| 406 | } |
| 407 | #else |
| 408 | params.scalar.min = output_min; |
| 409 | params.scalar.max = output_max; |
| 410 | #endif |
| 411 | return params; |
| 412 | } |
| 413 | |
Marat Dukhan | eb09a6b | 2020-04-08 17:34:32 -0700 | [diff] [blame] | 414 | static inline union xnn_f32_minmax_params xnn_init_scalar_f32_minmax_params( |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 415 | float output_min, |
| 416 | float output_max) |
| 417 | { |
Marat Dukhan | eb09a6b | 2020-04-08 17:34:32 -0700 | [diff] [blame] | 418 | union xnn_f32_minmax_params params; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 419 | params.scalar.min = output_min; |
| 420 | params.scalar.max = output_max; |
| 421 | return params; |
| 422 | } |
| 423 | |
Frank Barchard | b196659 | 2020-05-12 13:47:06 -0700 | [diff] [blame] | 424 | static inline struct xnn_f16_hswish_params xnn_init_f16_hswish_params(void) |
| 425 | { |
| 426 | struct xnn_f16_hswish_params params; |
| 427 | params.sixth = fp16_ieee_from_fp32_value(0x1.555556p-3f); |
| 428 | params.half = fp16_ieee_from_fp32_value(0.5f); |
| 429 | params.one = fp16_ieee_from_fp32_value(1.0f); |
| 430 | return params; |
| 431 | } |
| 432 | |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 433 | static inline union xnn_f32_hswish_params xnn_init_f32_hswish_params(void) |
| 434 | { |
| 435 | union xnn_f32_hswish_params params; |
| 436 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 437 | for (uint32_t i = 0; i < 4; i++) { |
| 438 | params.sse.sixth[i] = 0x1.555556p-3f; |
| 439 | params.sse.half[i] = 0.5f; |
| 440 | params.sse.one[i] = 1.0f; |
| 441 | } |
| 442 | #else |
| 443 | params.scalar.sixth = 0x1.555556p-3f; |
| 444 | params.scalar.half = 0.5f; |
| 445 | params.scalar.one = 1.0f; |
| 446 | #endif |
| 447 | return params; |
| 448 | } |
| 449 | |
| 450 | static inline union xnn_f32_hswish_params xnn_init_scalar_f32_hswish_params(void) |
| 451 | { |
| 452 | union xnn_f32_hswish_params params; |
| 453 | params.scalar.sixth = 0x1.555556p-3f; |
| 454 | params.scalar.half = 0.5f; |
| 455 | params.scalar.one = 1.0f; |
| 456 | return params; |
| 457 | } |
| 458 | |
Marat Dukhan | 2b9efd8 | 2020-06-08 01:09:31 -0700 | [diff] [blame] | 459 | static inline union xnn_f32_abs_params xnn_init_f32_abs_params(void) |
| 460 | { |
| 461 | union xnn_f32_abs_params params = { 0 }; |
| 462 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 463 | for (uint32_t i = 0; i < 4; i++) { |
| 464 | params.sse.nonsign_mask[i] = math_nonsign_mask_f32(); |
| 465 | } |
| 466 | #endif |
| 467 | return params; |
| 468 | } |
| 469 | |
| 470 | static inline union xnn_f32_abs_params xnn_init_scalar_f32_abs_params(void) |
| 471 | { |
| 472 | union xnn_f32_abs_params params = { 0 }; |
| 473 | return params; |
| 474 | } |
| 475 | |
| 476 | static inline union xnn_f32_neg_params xnn_init_f32_neg_params(void) |
| 477 | { |
| 478 | union xnn_f32_neg_params params = { 0 }; |
| 479 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 480 | for (uint32_t i = 0; i < 4; i++) { |
| 481 | params.sse.sign_mask[i] = -0.0f; |
| 482 | } |
| 483 | #endif |
| 484 | return params; |
| 485 | } |
| 486 | |
| 487 | static inline union xnn_f32_neg_params xnn_init_scalar_f32_neg_params(void) |
| 488 | { |
| 489 | union xnn_f32_neg_params params = { 0 }; |
| 490 | return params; |
| 491 | } |
| 492 | |
Marat Dukhan | eecf8fd | 2020-06-09 08:59:37 -0700 | [diff] [blame^] | 493 | static inline union xnn_f32_rnd_params xnn_init_f32_rnd_params(void) |
| 494 | { |
| 495 | union xnn_f32_rnd_params params = { 0 }; |
| 496 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 497 | for (uint32_t i = 0; i < 4; i++) { |
| 498 | params.sse2.sign_mask[i] = -0.0f; |
| 499 | } |
| 500 | for (uint32_t i = 0; i < 4; i++) { |
| 501 | params.sse2.one[i] = 1.0f; |
| 502 | } |
| 503 | #endif |
| 504 | return params; |
| 505 | } |
| 506 | |
| 507 | static inline union xnn_f32_rnd_params xnn_init_scalar_f32_rnd_params(void) |
| 508 | { |
| 509 | union xnn_f32_rnd_params params = { 0 }; |
| 510 | return params; |
| 511 | } |
| 512 | |
Marat Dukhan | 1f29b80 | 2020-05-15 23:46:39 -0700 | [diff] [blame] | 513 | static inline union xnn_f32_chw_params xnn_init_f32_chw_params( |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 514 | uint32_t width, |
| 515 | float output_min, |
| 516 | float output_max) |
| 517 | { |
Marat Dukhan | 1f29b80 | 2020-05-15 23:46:39 -0700 | [diff] [blame] | 518 | union xnn_f32_chw_params params; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 519 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 520 | for (uint32_t i = 0; i < 4; i++) { |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 521 | params.sse.min[i] = output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 522 | params.sse.max[i] = output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 523 | } |
| 524 | |
| 525 | const uint32_t w4 = (width - 1) & 3; |
| 526 | params.sse.mask[0] = UINT32_C(0xFFFFFFFF); |
| 527 | params.sse.mask[1] = -(uint32_t) (w4 >= 1); |
| 528 | params.sse.mask[2] = -(uint32_t) (w4 >= 2); |
| 529 | params.sse.mask[3] = -(uint32_t) (w4 >= 3); |
| 530 | |
| 531 | const uint32_t w8 = (width - 1) & 7; |
| 532 | params.sse.mask_even[0] = UINT32_C(0xFFFFFFFF); |
| 533 | params.sse.mask_even[1] = -(uint32_t) (w8 >= 2); |
| 534 | params.sse.mask_even[2] = -(uint32_t) (w8 >= 4); |
| 535 | params.sse.mask_even[3] = -(uint32_t) (w8 >= 6); |
| 536 | params.sse.mask_odd[0] = -(uint32_t) (w8 >= 1); |
| 537 | params.sse.mask_odd[1] = -(uint32_t) (w8 >= 3); |
| 538 | params.sse.mask_odd[2] = -(uint32_t) (w8 >= 5); |
| 539 | params.sse.mask_odd[3] = -(uint32_t) (w8 >= 7); |
| 540 | #elif XNN_ARCH_ARM || XNN_ARCH_ARM64 |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 541 | params.neon.min = output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 542 | params.neon.max = output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 543 | |
| 544 | const uint32_t w4 = (width - 1) & 3; |
| 545 | params.neon.mask[0] = UINT32_C(0xFFFFFFFF); |
| 546 | params.neon.mask[1] = -(uint32_t) (w4 >= 1); |
| 547 | params.neon.mask[2] = -(uint32_t) (w4 >= 2); |
| 548 | params.neon.mask[3] = -(uint32_t) (w4 >= 3); |
| 549 | |
| 550 | const uint32_t w8 = (width - 1) & 7; |
| 551 | params.neon.mask_even[0] = UINT32_C(0xFFFFFFFF); |
| 552 | params.neon.mask_even[1] = -(uint32_t) (w8 >= 2); |
| 553 | params.neon.mask_even[2] = -(uint32_t) (w8 >= 4); |
| 554 | params.neon.mask_even[3] = -(uint32_t) (w8 >= 6); |
| 555 | params.neon.mask_odd[0] = -(uint32_t) (w8 >= 1); |
| 556 | params.neon.mask_odd[1] = -(uint32_t) (w8 >= 3); |
| 557 | params.neon.mask_odd[2] = -(uint32_t) (w8 >= 5); |
| 558 | params.neon.mask_odd[3] = -(uint32_t) (w8 >= 7); |
| 559 | #else |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 560 | params.scalar.min = output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 561 | params.scalar.max = output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 562 | #endif |
| 563 | return params; |
| 564 | } |
| 565 | |
Marat Dukhan | 1f29b80 | 2020-05-15 23:46:39 -0700 | [diff] [blame] | 566 | static inline void xnn_update_f32_chw_params( |
| 567 | union xnn_f32_chw_params* params, |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 568 | uint32_t width) |
| 569 | { |
| 570 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 571 | const uint32_t w4 = (width - 1) & 3; |
| 572 | params->sse.mask[0] = UINT32_C(0xFFFFFFFF); |
| 573 | params->sse.mask[1] = -(uint32_t) (w4 >= 1); |
| 574 | params->sse.mask[2] = -(uint32_t) (w4 >= 2); |
| 575 | params->sse.mask[3] = -(uint32_t) (w4 >= 3); |
| 576 | |
| 577 | const uint32_t w8 = (width - 1) & 7; |
| 578 | params->sse.mask_even[0] = UINT32_C(0xFFFFFFFF); |
| 579 | params->sse.mask_even[1] = -(uint32_t) (w8 >= 2); |
| 580 | params->sse.mask_even[2] = -(uint32_t) (w8 >= 4); |
| 581 | params->sse.mask_even[3] = -(uint32_t) (w8 >= 6); |
| 582 | params->sse.mask_odd[0] = -(uint32_t) (w8 >= 1); |
| 583 | params->sse.mask_odd[1] = -(uint32_t) (w8 >= 3); |
| 584 | params->sse.mask_odd[2] = -(uint32_t) (w8 >= 5); |
| 585 | params->sse.mask_odd[3] = -(uint32_t) (w8 >= 7); |
| 586 | #elif XNN_ARCH_ARM || XNN_ARCH_ARM64 |
| 587 | const uint32_t w4 = (width - 1) & 3; |
| 588 | params->neon.mask[0] = UINT32_C(0xFFFFFFFF); |
| 589 | params->neon.mask[1] = -(uint32_t) (w4 >= 1); |
| 590 | params->neon.mask[2] = -(uint32_t) (w4 >= 2); |
| 591 | params->neon.mask[3] = -(uint32_t) (w4 >= 3); |
| 592 | |
| 593 | const uint32_t w8 = (width - 1) & 7; |
| 594 | params->neon.mask_even[0] = UINT32_C(0xFFFFFFFF); |
| 595 | params->neon.mask_even[1] = -(uint32_t) (w8 >= 2); |
| 596 | params->neon.mask_even[2] = -(uint32_t) (w8 >= 4); |
| 597 | params->neon.mask_even[3] = -(uint32_t) (w8 >= 6); |
| 598 | params->neon.mask_odd[0] = -(uint32_t) (w8 >= 1); |
| 599 | params->neon.mask_odd[1] = -(uint32_t) (w8 >= 3); |
| 600 | params->neon.mask_odd[2] = -(uint32_t) (w8 >= 5); |
| 601 | params->neon.mask_odd[3] = -(uint32_t) (w8 >= 7); |
| 602 | #endif |
| 603 | } |
| 604 | |
Marat Dukhan | 1f29b80 | 2020-05-15 23:46:39 -0700 | [diff] [blame] | 605 | static inline union xnn_f32_chw_params xnn_init_scalar_f32_chw_params( |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 606 | uint32_t width, |
| 607 | float output_min, |
| 608 | float output_max) |
| 609 | { |
Marat Dukhan | 1f29b80 | 2020-05-15 23:46:39 -0700 | [diff] [blame] | 610 | union xnn_f32_chw_params params; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 611 | params.scalar.min = output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 612 | params.scalar.max = output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 613 | return params; |
| 614 | } |
| 615 | |
Marat Dukhan | eb09a6b | 2020-04-08 17:34:32 -0700 | [diff] [blame] | 616 | static inline union xnn_u8_minmax_params xnn_init_u8_minmax_params( |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 617 | uint8_t output_min, |
| 618 | uint8_t output_max) |
| 619 | { |
| 620 | assert(output_min < output_max); |
| 621 | |
Marat Dukhan | eb09a6b | 2020-04-08 17:34:32 -0700 | [diff] [blame] | 622 | union xnn_u8_minmax_params params; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 623 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 624 | for (uint32_t i = 0; i < 16; i++) { |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 625 | params.sse2.min[i] = output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 626 | params.sse2.max[i] = output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 627 | } |
| 628 | #elif XNN_ARCH_ARM || XNN_ARCH_ARM64 |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 629 | params.neon.min = output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 630 | params.neon.max = output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 631 | #else |
| 632 | params.scalar.min = (int32_t) (uint32_t) output_min; |
| 633 | params.scalar.max = (int32_t) (uint32_t) output_max; |
| 634 | #endif |
| 635 | return params; |
| 636 | } |
| 637 | |
Marat Dukhan | eb09a6b | 2020-04-08 17:34:32 -0700 | [diff] [blame] | 638 | static inline union xnn_u8_minmax_params xnn_init_scalar_u8_minmax_params( |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 639 | uint8_t output_min, |
| 640 | uint8_t output_max) |
| 641 | { |
| 642 | assert(output_min < output_max); |
| 643 | |
Marat Dukhan | eb09a6b | 2020-04-08 17:34:32 -0700 | [diff] [blame] | 644 | union xnn_u8_minmax_params params; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 645 | params.scalar.min = (int32_t) (uint32_t) output_min; |
| 646 | params.scalar.max = (int32_t) (uint32_t) output_max; |
| 647 | return params; |
| 648 | } |
| 649 | |
| 650 | static inline union xnn_q8_add_params xnn_init_q8_add_params( |
| 651 | uint8_t a_zero_point, |
| 652 | uint8_t b_zero_point, |
| 653 | uint8_t output_zero_point, |
| 654 | float a_output_scale, |
| 655 | float b_output_scale, |
| 656 | uint8_t output_min, |
| 657 | uint8_t output_max) |
| 658 | { |
| 659 | assert(a_output_scale >= 0x1.0p-14f); |
| 660 | assert(b_output_scale >= 0x1.0p-14f); |
| 661 | assert(a_output_scale < 0x1.0p+8f); |
| 662 | assert(b_output_scale < 0x1.0p+8f); |
| 663 | |
| 664 | // Compute requantization parameters. |
| 665 | const float max_output_scale = a_output_scale > b_output_scale ? a_output_scale : b_output_scale; |
| 666 | assert(max_output_scale >= 0x1.0p-14f); |
| 667 | assert(max_output_scale < 0x1.0p+8f); |
| 668 | const uint32_t max_scale_bits = fp32_to_bits(max_output_scale); |
| 669 | const int32_t max_scale_exponent = (int32_t) (max_scale_bits >> 23) - 127; |
| 670 | // Shift is in [13, 31] range. |
| 671 | const uint32_t shift = (uint32_t) (21 - max_scale_exponent); |
| 672 | assert(shift < 32); |
| 673 | assert(shift >= 13); |
| 674 | |
| 675 | const float scale_multiplier = fp32_from_bits((uint32_t) (21 - max_scale_exponent + 127) << 23); |
| 676 | |
| 677 | // Multipliers are in [0, 2**22) range, largest multiplier is in [2**21, 2**22) range. |
Marat Dukhan | ef3e7dc | 2020-04-13 01:19:56 -0700 | [diff] [blame] | 678 | const uint32_t a_multiplier = (uint32_t) (int32_t) lrintf(a_output_scale * scale_multiplier); |
| 679 | const uint32_t b_multiplier = (uint32_t) (int32_t) lrintf(b_output_scale * scale_multiplier); |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 680 | assert((a_multiplier > b_multiplier ? a_multiplier : b_multiplier) >= UINT32_C(0x00200000)); |
| 681 | assert(a_multiplier < UINT32_C(0x00400000)); |
| 682 | assert(b_multiplier < UINT32_C(0x00400000)); |
| 683 | |
| 684 | union xnn_q8_add_params params; |
| 685 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 686 | const uint32_t remainder_mask = (UINT32_C(1) << shift) - UINT32_C(1); |
| 687 | const uint32_t remainder_threshold = remainder_mask >> 1; |
| 688 | const int32_t zero_point_product = |
| 689 | (int32_t) -(a_multiplier * (uint32_t) a_zero_point + b_multiplier * (uint32_t) b_zero_point); |
| 690 | for (uint32_t i = 0; i < 4; i++) { |
| 691 | params.sse2.zero_point_product[i] = zero_point_product; |
| 692 | } |
| 693 | for (uint32_t i = 0; i < 8; i++) { |
| 694 | params.sse2.y_zero_point[i] = (int16_t) (uint16_t) output_zero_point; |
| 695 | } |
| 696 | for (uint32_t i = 0; i < 8; i++) { |
| 697 | params.sse2.a_multiplier_lo[i] = (uint16_t) (uint32_t) a_multiplier; |
| 698 | params.sse2.a_multiplier_hi[i] = (uint16_t) ((uint32_t) a_multiplier >> 16); |
| 699 | params.sse2.b_multiplier_lo[i] = (uint16_t) (uint32_t) b_multiplier; |
| 700 | params.sse2.b_multiplier_hi[i] = (uint16_t) ((uint32_t) b_multiplier >> 16); |
| 701 | } |
| 702 | params.sse2.a_multiplier = a_multiplier; |
| 703 | params.sse2.b_multiplier = b_multiplier; |
| 704 | for (uint32_t i = 0; i < 4; i++) { |
| 705 | params.sse2.remainder_mask[i] = remainder_mask; |
| 706 | params.sse2.remainder_threshold[i] = remainder_threshold; |
| 707 | } |
| 708 | params.sse2.shift = shift; |
| 709 | for (uint32_t i = 0; i < 16; i++) { |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 710 | params.sse2.y_min[i] = output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 711 | params.sse2.y_max[i] = output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 712 | } |
| 713 | #elif XNN_ARCH_ARM || XNN_ARCH_ARM64 |
| 714 | params.neon.a_zero_point = a_zero_point; |
| 715 | params.neon.b_zero_point = b_zero_point; |
| 716 | params.neon.y_zero_point = (int16_t) (uint16_t) output_zero_point; |
| 717 | params.neon.a_multiplier = (int32_t) a_multiplier; |
| 718 | params.neon.b_multiplier = (int32_t) b_multiplier; |
| 719 | params.neon.right_shift = (int32_t) -shift; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 720 | params.neon.y_min = output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 721 | params.neon.y_max = output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 722 | #else |
| 723 | const uint32_t remainder_mask = (UINT32_C(1) << shift) - UINT32_C(1); |
| 724 | const uint32_t remainder_threshold = remainder_mask >> 1; |
| 725 | params.scalar.zero_point_product = |
| 726 | (int32_t) -(a_multiplier * (uint32_t) a_zero_point + b_multiplier * (uint32_t) b_zero_point); |
| 727 | params.scalar.a_multiplier = a_multiplier; |
| 728 | params.scalar.b_multiplier = b_multiplier; |
| 729 | params.scalar.remainder_mask = (int32_t) remainder_mask; |
| 730 | params.scalar.remainder_threshold = (int32_t) remainder_threshold; |
| 731 | params.scalar.shift = shift; |
| 732 | params.scalar.y_zero_point = (int32_t) (uint32_t) output_zero_point; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 733 | params.scalar.y_min = (int32_t) (uint32_t) output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 734 | params.scalar.y_max = (int32_t) (uint32_t) output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 735 | #endif |
| 736 | return params; |
| 737 | } |
| 738 | |
| 739 | static inline union xnn_q8_add_params xnn_init_scalar_q8_add_params( |
| 740 | uint8_t a_zero_point, |
| 741 | uint8_t b_zero_point, |
| 742 | uint8_t output_zero_point, |
| 743 | float a_output_scale, |
| 744 | float b_output_scale, |
| 745 | uint8_t output_min, |
| 746 | uint8_t output_max) |
| 747 | { |
| 748 | assert(a_output_scale >= 0x1.0p-10f); |
| 749 | assert(b_output_scale >= 0x1.0p-10f); |
| 750 | assert(a_output_scale < 0x1.0p+8f); |
| 751 | assert(b_output_scale < 0x1.0p+8f); |
| 752 | |
| 753 | // Compute requantization parameters. |
| 754 | const float max_output_scale = a_output_scale > b_output_scale ? a_output_scale : b_output_scale; |
| 755 | assert(max_output_scale >= 0x1.0p-10f); |
| 756 | assert(max_output_scale < 0x1.0p+8f); |
| 757 | const uint32_t max_scale_bits = fp32_to_bits(max_output_scale); |
| 758 | const int32_t max_scale_exponent = (int32_t) (max_scale_bits >> 23) - 127; |
| 759 | // Shift is in [13, 31] range. |
| 760 | const uint32_t shift = (uint32_t) (21 - max_scale_exponent); |
| 761 | assert(shift < 32); |
| 762 | assert(shift >= 13); |
| 763 | |
| 764 | // Multipliers are in [0, 2**22) range, largest multiplier is in [2**21, 2**22) range. |
Marat Dukhan | ef3e7dc | 2020-04-13 01:19:56 -0700 | [diff] [blame] | 765 | const uint32_t a_multiplier = (uint32_t) (int32_t) lrintf(fp32_from_bits(fp32_to_bits(a_output_scale) + (shift << 23))); |
| 766 | const uint32_t b_multiplier = (uint32_t) (int32_t) lrintf(fp32_from_bits(fp32_to_bits(b_output_scale) + (shift << 23))); |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 767 | assert((a_multiplier > b_multiplier ? a_multiplier : b_multiplier) >= UINT32_C(0x00200000)); |
| 768 | assert(a_multiplier < UINT32_C(0x00400000)); |
| 769 | assert(b_multiplier < UINT32_C(0x00400000)); |
| 770 | |
| 771 | union xnn_q8_add_params params; |
| 772 | const uint32_t remainder_mask = (UINT32_C(1) << shift) - UINT32_C(1); |
| 773 | const uint32_t remainder_threshold = remainder_mask >> 1; |
| 774 | params.scalar.zero_point_product = |
| 775 | (int32_t) -(a_multiplier * (uint32_t) a_zero_point + b_multiplier * (uint32_t) b_zero_point); |
| 776 | params.scalar.a_multiplier = a_multiplier; |
| 777 | params.scalar.b_multiplier = b_multiplier; |
| 778 | params.scalar.remainder_mask = (int32_t) remainder_mask; |
| 779 | params.scalar.remainder_threshold = (int32_t) remainder_threshold; |
| 780 | params.scalar.shift = shift; |
| 781 | params.scalar.y_zero_point = (int32_t) (uint32_t) output_zero_point; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 782 | params.scalar.y_min = (int32_t) (uint32_t) output_min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 783 | params.scalar.y_max = (int32_t) (uint32_t) output_max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 784 | return params; |
| 785 | } |
| 786 | |
| 787 | static inline union xnn_q31_requantization_params xnn_init_scalar_requantization_params( |
| 788 | float scale, |
| 789 | uint8_t zero_point, |
| 790 | uint8_t min, |
| 791 | uint8_t max) |
| 792 | { |
| 793 | // Compute requantization parameters. |
| 794 | assert(scale < 1.0f); |
| 795 | assert(scale >= 0x1.0p-32f); |
| 796 | const uint32_t scale_bits = fp32_to_bits(scale); |
| 797 | |
| 798 | // Multiplier is in [0x40000000, 0x7FFFFF80] range. |
| 799 | const int32_t multiplier = (int32_t)(((scale_bits & UINT32_C(0x007FFFFF)) | UINT32_C(0x00800000)) << 7); |
| 800 | assert(multiplier >= INT32_C(0x40000000)); |
| 801 | assert(multiplier <= INT32_C(0x7FFFFF80)); |
| 802 | |
| 803 | // Shift is in [0, 31] range. |
| 804 | const int32_t shift = 127 + 31 - 32 - (fp32_to_bits(scale) >> 23); |
| 805 | assert(shift >= 0); |
| 806 | assert(shift < 32); |
| 807 | |
| 808 | union xnn_q31_requantization_params params; |
| 809 | const uint32_t remainder_mask = (UINT32_C(1) << shift) - UINT32_C(1); |
| 810 | const uint32_t remainder_threshold = remainder_mask >> 1; |
| 811 | params.scalar.multiplier = multiplier; |
| 812 | params.scalar.remainder_mask = (int32_t) remainder_mask; |
| 813 | params.scalar.remainder_threshold = (int32_t) remainder_threshold; |
| 814 | params.scalar.shift = (uint32_t) shift; |
| 815 | params.scalar.min_less_zero_point = (int32_t) (uint32_t) min - (int32_t) (uint32_t) zero_point; |
| 816 | params.scalar.max_less_zero_point = (int32_t) (uint32_t) max - (int32_t) (uint32_t) zero_point; |
| 817 | params.scalar.zero_point = (int32_t) (uint32_t) zero_point; |
| 818 | return params; |
| 819 | } |
| 820 | |
| 821 | static inline union xnn_q31_requantization_params xnn_init_requantization_params( |
| 822 | float scale, |
| 823 | uint8_t zero_point, |
| 824 | uint8_t min, |
| 825 | uint8_t max) |
| 826 | { |
| 827 | // Compute requantization parameters. |
| 828 | const uint32_t scale_bits = fp32_to_bits(scale); |
| 829 | |
| 830 | // Multiplier is in [0x40000000, 0x7FFFFF80] range. |
| 831 | const int32_t multiplier = (int32_t)(((scale_bits & UINT32_C(0x007FFFFF)) | UINT32_C(0x00800000)) << 7); |
| 832 | assert(multiplier >= INT32_C(0x40000000)); |
| 833 | assert(multiplier <= INT32_C(0x7FFFFF80)); |
| 834 | |
| 835 | // Shift is in [0, 31] range. |
| 836 | const int32_t shift = 127 + 31 - 32 - (fp32_to_bits(scale) >> 23); |
| 837 | assert(shift >= 0); |
| 838 | assert(shift < 32); |
| 839 | |
| 840 | union xnn_q31_requantization_params params; |
| 841 | #if XNN_ARCH_X86 || XNN_ARCH_X86_64 |
| 842 | const uint32_t remainder_mask = (UINT32_C(1) << shift) - UINT32_C(1); |
| 843 | const uint32_t remainder_threshold = remainder_mask >> 1; |
| 844 | params.sse2.multiplier[0] = multiplier; |
| 845 | params.sse2.multiplier[1] = multiplier; |
| 846 | params.sse2.multiplier[2] = multiplier; |
| 847 | params.sse2.multiplier[3] = multiplier; |
| 848 | params.sse2.rounding[0] = UINT64_C(0x40000000); |
| 849 | params.sse2.rounding[1] = UINT64_C(0x40000000); |
| 850 | params.sse2.remainder_mask[0] = (int32_t) remainder_mask; |
| 851 | params.sse2.remainder_mask[1] = (int32_t) remainder_mask; |
| 852 | params.sse2.remainder_mask[2] = (int32_t) remainder_mask; |
| 853 | params.sse2.remainder_mask[3] = (int32_t) remainder_mask; |
| 854 | params.sse2.remainder_threshold[0] = (int32_t) remainder_threshold; |
| 855 | params.sse2.remainder_threshold[1] = (int32_t) remainder_threshold; |
| 856 | params.sse2.remainder_threshold[2] = (int32_t) remainder_threshold; |
| 857 | params.sse2.remainder_threshold[3] = (int32_t) remainder_threshold; |
| 858 | params.sse2.shift[0] = (uint64_t) (uint32_t) shift; |
| 859 | params.sse2.shift[1] = (uint64_t) (uint32_t) shift; |
| 860 | for (uint32_t i = 0; i < 8; i++) { |
| 861 | params.sse2.zero_point[i] = (int16_t) (uint16_t) zero_point; |
| 862 | } |
| 863 | for (uint32_t i = 0; i < 16; i++) { |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 864 | params.sse2.min[i] = min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 865 | params.sse2.max[i] = max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 866 | } |
| 867 | #elif XNN_ARCH_ARM || XNN_ARCH_ARM64 |
| 868 | params.neon.multiplier = multiplier; |
| 869 | params.neon.right_shift = -shift; |
| 870 | params.neon.zero_point = (int16_t) (uint16_t) zero_point; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 871 | params.neon.min = min; |
Marat Dukhan | a51cf48 | 2020-04-08 16:16:19 -0700 | [diff] [blame] | 872 | params.neon.max = max; |
Marat Dukhan | eeaa7bd | 2019-10-25 17:31:25 -0700 | [diff] [blame] | 873 | #else |
| 874 | const uint32_t remainder_mask = (UINT32_C(1) << shift) - UINT32_C(1); |
| 875 | const uint32_t remainder_threshold = remainder_mask >> 1; |
| 876 | params.scalar.multiplier = multiplier; |
| 877 | params.scalar.remainder_mask = (int32_t) remainder_mask; |
| 878 | params.scalar.remainder_threshold = (int32_t) remainder_threshold; |
| 879 | params.scalar.shift = (uint32_t) shift; |
| 880 | params.scalar.min_less_zero_point = (int32_t) (uint32_t) min - (int32_t) (uint32_t) zero_point; |
| 881 | params.scalar.max_less_zero_point = (int32_t) (uint32_t) max - (int32_t) (uint32_t) zero_point; |
| 882 | params.scalar.zero_point = (int32_t) (uint32_t) zero_point; |
| 883 | #endif |
| 884 | return params; |
| 885 | } |