| // Auto-generated file. Do not edit! |
| // Template: src/qs8-f32-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/intrinsics-polyfill.h> |
| #include <xnnpack/vcvt.h> |
| |
| |
| void xnn_qu8_f32_vcvt_ukernel__avx2_x16( |
| size_t n, |
| const uint8_t* x, |
| float* y, |
| const union xnn_qu8_f32_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS |
| { |
| assert(n != 0); |
| assert(n % sizeof(uint8_t) == 0); |
| assert(x != NULL); |
| assert(y != NULL); |
| |
| const __m256i vminus_zero_point = _mm256_load_si256((const __m256i*) params->avx.minus_zero_point); |
| const __m256 vscale = _mm256_load_ps(params->avx.scale); |
| for (; n >= 16 * sizeof(uint8_t); n -= 16 * sizeof(uint8_t)) { |
| __m256i vx01234567 = _mm256_cvtepu8_epi32(_mm_loadl_epi64((const __m128i*) x)); |
| __m256i vx89ABCDEF = _mm256_cvtepu8_epi32(_mm_loadl_epi64((const __m128i*) (x + 8))); |
| x += 16; |
| |
| vx01234567 = _mm256_add_epi32(vx01234567, vminus_zero_point); |
| vx89ABCDEF = _mm256_add_epi32(vx89ABCDEF, vminus_zero_point); |
| |
| __m256 vy01234567 = _mm256_cvtepi32_ps(vx01234567); |
| __m256 vy89ABCDEF = _mm256_cvtepi32_ps(vx89ABCDEF); |
| |
| vy01234567 = _mm256_mul_ps(vy01234567, vscale); |
| vy89ABCDEF = _mm256_mul_ps(vy89ABCDEF, vscale); |
| |
| _mm256_storeu_ps(y, vy01234567); |
| _mm256_storeu_ps(y + 8, vy89ABCDEF); |
| y += 16; |
| } |
| for (; n >= 8 * sizeof(uint8_t); n -= 8 * sizeof(uint8_t)) { |
| __m256i vx = _mm256_cvtepu8_epi32(_mm_loadl_epi64((const __m128i*) x)); |
| vx = _mm256_add_epi32(vx, vminus_zero_point); |
| x += 8; |
| |
| __m256 vy = _mm256_cvtepi32_ps(vx); |
| vy = _mm256_mul_ps(vy, vscale); |
| |
| _mm256_storeu_ps(y, vy); |
| y += 8; |
| } |
| if XNN_UNLIKELY(n != 0) { |
| assert(n >= 1 * sizeof(uint8_t)); |
| assert(n <= 7 * sizeof(uint8_t)); |
| |
| __m256i vx = _mm256_cvtepu8_epi32(_mm_loadl_epi64((const __m128i*) x)); |
| vx = _mm256_add_epi32(vx, vminus_zero_point); |
| |
| __m256 vy = _mm256_cvtepi32_ps(vx); |
| vy = _mm256_mul_ps(vy, vscale); |
| |
| __m128 vy_lo = _mm256_castps256_ps128(vy); |
| if (n & (4 * sizeof(uint8_t))) { |
| _mm_storeu_ps(y, vy_lo); |
| vy_lo = _mm256_extractf128_ps(vy, 1); |
| y += 4; |
| } |
| if (n & (2 * sizeof(uint8_t))) { |
| _mm_storel_pi((__m64*) y, vy_lo); |
| vy_lo = _mm_movehl_ps(vy_lo, vy_lo); |
| y += 2; |
| } |
| if (n & (1 * sizeof(uint8_t))) { |
| _mm_store_ss(y, vy_lo); |
| } |
| } |
| } |