Marat Dukhan | 0d399ca | 2021-12-14 19:25:50 -0800 | [diff] [blame] | 1 | // Auto-generated file. Do not edit! |
| 2 | // Template: src/f32-qs8-vcvt/avx2.c.in |
| 3 | // Generator: tools/xngen |
| 4 | // |
| 5 | // Copyright 2021 Google LLC |
| 6 | // |
| 7 | // This source code is licensed under the BSD-style license found in the |
| 8 | // LICENSE file in the root directory of this source tree. |
| 9 | |
| 10 | #include <assert.h> |
| 11 | |
| 12 | #include <immintrin.h> |
| 13 | |
| 14 | #include <xnnpack/common.h> |
| 15 | #include <xnnpack/vcvt.h> |
| 16 | |
| 17 | |
| 18 | void xnn_f32_qs8_vcvt_ukernel__avx2_x16( |
| 19 | size_t n, |
| 20 | const float* x, |
| 21 | int8_t* y, |
Marat Dukhan | 2edf863 | 2021-12-14 23:17:14 -0800 | [diff] [blame^] | 22 | const union xnn_f32_qs8_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) |
Marat Dukhan | 0d399ca | 2021-12-14 19:25:50 -0800 | [diff] [blame] | 23 | { |
| 24 | assert(n != 0); |
| 25 | assert(n % sizeof(float) == 0); |
| 26 | assert(x != NULL); |
| 27 | assert(y != NULL); |
| 28 | |
| 29 | const __m256 vscale = _mm256_load_ps(params->avx2.scale); |
| 30 | const __m256 voutput_max_less_zero_point = _mm256_load_ps(params->avx2.output_max_less_zero_point); |
| 31 | const __m256i voutput_zero_point = _mm256_load_si256((const __m256i*) params->avx2.output_zero_point); |
| 32 | const __m128i voutput_min = _mm_load_si128((const __m128i*) params->avx2.output_min); |
| 33 | |
| 34 | for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) { |
| 35 | __m256 vx01 = _mm256_loadu_ps(x); |
| 36 | __m256 vx23 = _mm256_loadu_ps(x + 8); |
| 37 | x += 16; |
| 38 | |
| 39 | vx01 = _mm256_mul_ps(vx01, vscale); |
| 40 | vx23 = _mm256_mul_ps(vx23, vscale); |
| 41 | |
| 42 | vx01 = _mm256_min_ps(vx01, voutput_max_less_zero_point); |
| 43 | vx23 = _mm256_min_ps(vx23, voutput_max_less_zero_point); |
| 44 | |
| 45 | const __m256i vacc01 = _mm256_cvtps_epi32(vx01); |
| 46 | const __m256i vacc23 = _mm256_cvtps_epi32(vx23); |
| 47 | |
| 48 | __m256i vacc0213 = _mm256_packs_epi32(vacc01, vacc23); |
| 49 | |
| 50 | vacc0213 = _mm256_adds_epi16(vacc0213, voutput_zero_point); |
| 51 | |
| 52 | const __m128i vy0213 = _mm_packs_epi16(_mm256_castsi256_si128(vacc0213), _mm256_extracti128_si256(vacc0213, 1)); |
| 53 | |
| 54 | __m128i vy0123 = _mm_shuffle_epi32(vy0213, _MM_SHUFFLE(3, 1, 2, 0)); |
| 55 | |
| 56 | vy0123 = _mm_max_epi8(vy0123, voutput_min); |
| 57 | |
| 58 | _mm_storeu_si128((__m128i*) y, vy0123); |
| 59 | y += 16; |
| 60 | } |
| 61 | for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) { |
| 62 | __m256 vx = _mm256_loadu_ps(x); |
| 63 | vx = _mm256_mul_ps(vx, vscale); |
| 64 | vx = _mm256_min_ps(vx, voutput_max_less_zero_point); |
| 65 | x += 8; |
| 66 | |
| 67 | const __m256i vacc = _mm256_cvtps_epi32(vx); |
| 68 | |
| 69 | __m128i vy = _mm_packs_epi32(_mm256_castsi256_si128(vacc), _mm256_extracti128_si256(vacc, 1)); |
| 70 | vy = _mm_adds_epi16(vy, _mm256_castsi256_si128(voutput_zero_point)); |
| 71 | vy = _mm_packs_epi16(vy, vy); |
| 72 | vy = _mm_max_epi8(vy, voutput_min); |
| 73 | |
| 74 | _mm_storel_epi64((__m128i*) y, vy); |
| 75 | y += 8; |
| 76 | } |
| 77 | if XNN_UNLIKELY(n != 0) { |
| 78 | assert(n >= 1 * sizeof(float)); |
| 79 | assert(n <= 7 * sizeof(float)); |
| 80 | __m256i vmask = _mm256_loadu_si256((const __m256i*) ((uintptr_t) ¶ms->avx2.mask_table[7] - n)); |
| 81 | |
| 82 | __m256 vx = _mm256_maskload_ps(x, vmask); |
| 83 | vx = _mm256_mul_ps(vx, vscale); |
| 84 | vx = _mm256_min_ps(vx, voutput_max_less_zero_point); |
| 85 | |
| 86 | const __m256i vacc = _mm256_cvtps_epi32(vx); |
| 87 | |
| 88 | __m128i vy = _mm_packs_epi32(_mm256_castsi256_si128(vacc), _mm256_extracti128_si256(vacc, 1)); |
| 89 | vy = _mm_adds_epi16(vy, _mm256_castsi256_si128(voutput_zero_point)); |
| 90 | vy = _mm_packs_epi16(vy, vy); |
| 91 | vy = _mm_max_epi8(vy, voutput_min); |
| 92 | |
| 93 | if (n & (4 * sizeof(float))) { |
| 94 | *((uint32_t*) y) = (uint32_t) _mm_cvtsi128_si32(vy); |
| 95 | y += 4; |
| 96 | vy = _mm_srli_epi64(vy, 32); |
| 97 | } |
| 98 | if (n & (2 * sizeof(float))) { |
| 99 | *((uint16_t*) y) = (uint16_t) _mm_extract_epi16(vy, 0); |
| 100 | y += 2; |
| 101 | vy = _mm_srli_epi32(vy, 16); |
| 102 | } |
| 103 | if (n & (1 * sizeof(float))) { |
| 104 | *y = (int8_t) _mm_extract_epi8(vy, 0); |
| 105 | } |
| 106 | } |
| 107 | } |