| // Auto-generated file. Do not edit! |
| // Template: src/f32-qs8-vcvt/avx2.c.in |
| // Generator: tools/xngen |
| // |
| // Copyright 2021 Google LLC |
| // |
| // This source code is licensed under the BSD-style license found in the |
| // LICENSE file in the root directory of this source tree. |
| |
| #include <assert.h> |
| |
| #include <immintrin.h> |
| |
| #include <xnnpack/common.h> |
| #include <xnnpack/vcvt.h> |
| |
| |
| void xnn_f32_qu8_vcvt_ukernel__avx2_x32( |
| size_t n, |
| const float* x, |
| uint8_t* y, |
| const union xnn_f32_qu8_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) |
| { |
| assert(n != 0); |
| assert(n % sizeof(float) == 0); |
| assert(x != NULL); |
| assert(y != NULL); |
| |
| const __m256 vscale = _mm256_load_ps(params->avx2.scale); |
| const __m256 voutput_max_less_zero_point = _mm256_load_ps(params->avx2.output_max_less_zero_point); |
| const __m256i voutput_zero_point = _mm256_load_si256((const __m256i*) params->avx2.output_zero_point); |
| const __m256i vshuffle_mask = _mm256_load_si256((const __m256i*) params->avx2.shuffle_mask); |
| const __m256i voutput_min = _mm256_load_si256((const __m256i*) params->avx2.output_min); |
| |
| for (; n >= 32 * sizeof(float); n -= 32 * sizeof(float)) { |
| __m256 vx01 = _mm256_loadu_ps(x); |
| __m256 vx23 = _mm256_loadu_ps(x + 8); |
| __m256 vx45 = _mm256_loadu_ps(x + 16); |
| __m256 vx67 = _mm256_loadu_ps(x + 24); |
| x += 32; |
| |
| vx01 = _mm256_mul_ps(vx01, vscale); |
| vx23 = _mm256_mul_ps(vx23, vscale); |
| vx45 = _mm256_mul_ps(vx45, vscale); |
| vx67 = _mm256_mul_ps(vx67, vscale); |
| |
| vx01 = _mm256_min_ps(vx01, voutput_max_less_zero_point); |
| vx23 = _mm256_min_ps(vx23, voutput_max_less_zero_point); |
| vx45 = _mm256_min_ps(vx45, voutput_max_less_zero_point); |
| vx67 = _mm256_min_ps(vx67, voutput_max_less_zero_point); |
| |
| const __m256i vacc01 = _mm256_cvtps_epi32(vx01); |
| const __m256i vacc23 = _mm256_cvtps_epi32(vx23); |
| const __m256i vacc45 = _mm256_cvtps_epi32(vx45); |
| const __m256i vacc67 = _mm256_cvtps_epi32(vx67); |
| |
| __m256i vacc0213 = _mm256_packs_epi32(vacc01, vacc23); |
| __m256i vacc4657 = _mm256_packs_epi32(vacc45, vacc67); |
| |
| vacc0213 = _mm256_adds_epi16(vacc0213, voutput_zero_point); |
| vacc4657 = _mm256_adds_epi16(vacc4657, voutput_zero_point); |
| |
| const __m256i vy02461357 = _mm256_packus_epi16(vacc0213, vacc4657); |
| |
| __m256i vy01234567 = _mm256_permutevar8x32_epi32(vy02461357, vshuffle_mask); |
| |
| vy01234567 = _mm256_max_epu8(vy01234567, voutput_min); |
| |
| _mm256_storeu_si256((__m256i*) y, vy01234567); |
| y += 32; |
| } |
| for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) { |
| __m256 vx = _mm256_loadu_ps(x); |
| vx = _mm256_mul_ps(vx, vscale); |
| vx = _mm256_min_ps(vx, voutput_max_less_zero_point); |
| x += 8; |
| |
| const __m256i vacc = _mm256_cvtps_epi32(vx); |
| |
| __m128i vy = _mm_packs_epi32(_mm256_castsi256_si128(vacc), _mm256_extracti128_si256(vacc, 1)); |
| vy = _mm_adds_epi16(vy, _mm256_castsi256_si128(voutput_zero_point)); |
| vy = _mm_packus_epi16(vy, vy); |
| vy = _mm_max_epu8(vy, _mm256_castsi256_si128(voutput_min)); |
| |
| _mm_storel_epi64((__m128i*) y, vy); |
| y += 8; |
| } |
| if XNN_UNLIKELY(n != 0) { |
| assert(n >= 1 * sizeof(float)); |
| assert(n <= 7 * sizeof(float)); |
| const __m256i vmask = _mm256_loadu_si256((const __m256i*) ((uintptr_t) ¶ms->avx2.mask_table[7] - n)); |
| |
| __m256 vx = _mm256_maskload_ps(x, vmask); |
| vx = _mm256_mul_ps(vx, vscale); |
| vx = _mm256_min_ps(vx, voutput_max_less_zero_point); |
| |
| const __m256i vacc = _mm256_cvtps_epi32(vx); |
| |
| __m128i vy = _mm_packs_epi32(_mm256_castsi256_si128(vacc), _mm256_extracti128_si256(vacc, 1)); |
| vy = _mm_adds_epi16(vy, _mm256_castsi256_si128(voutput_zero_point)); |
| vy = _mm_packus_epi16(vy, vy); |
| vy = _mm_max_epu8(vy, _mm256_castsi256_si128(voutput_min)); |
| |
| if (n & (4 * sizeof(float))) { |
| *((uint32_t*) y) = (uint32_t) _mm_cvtsi128_si32(vy); |
| y += 4; |
| vy = _mm_srli_epi64(vy, 32); |
| } |
| if (n & (2 * sizeof(float))) { |
| *((uint16_t*) y) = (uint16_t) _mm_extract_epi16(vy, 0); |
| y += 2; |
| vy = _mm_srli_epi32(vy, 16); |
| } |
| if (n & (1 * sizeof(float))) { |
| *y = (uint8_t) _mm_extract_epi8(vy, 0); |
| } |
| } |
| } |