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$assert BATCH_TILE % 8 == 0 7$assert BATCH_TILE >= 8 8$SIMD_TILE = BATCH_TILE // 8 9#include <assert.h> 10 11#include <immintrin.h> 12 13#include <xnnpack/common.h> 14#include <xnnpack/vcvt.h> 15 16 17void xnn_f16_f32_vcvt_ukernel__f16c_x${BATCH_TILE}( 18 size_t n, 19 const void* input, 20 float* output, 21 const union xnn_f16_f32_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS 22{ 23 assert(n != 0); 24 assert(n % sizeof(uint16_t) == 0); 25 assert(input != NULL); 26 assert(output != NULL); 27 28 const uint16_t* i = (const uint16_t*) input; 29 $if BATCH_TILE > 8: 30 for (; n >= ${BATCH_TILE} * sizeof(uint16_t); n -= ${BATCH_TILE} * sizeof(uint16_t)) { 31 const __m256 vacc0 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i)); 32 $for N in range(1, SIMD_TILE): 33 const __m256 vacc${N} = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) (i + ${N * 8}))); 34 i += ${BATCH_TILE}; 35 36 _mm256_storeu_ps(output, vacc0); 37 $for N in range(1, SIMD_TILE): 38 _mm256_storeu_ps(output + ${N * 8}, vacc${N}); 39 output += ${BATCH_TILE}; 40 } 41 for (; n >= 8 * sizeof(uint16_t); n -= 8 * sizeof(uint16_t)) { 42 const __m256 vacc = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i)); 43 i += 8; 44 45 _mm256_storeu_ps(output, vacc); 46 output += 8; 47 } 48 if XNN_UNLIKELY(n != 0) { 49 assert(n >= 1 * sizeof(uint16_t)); 50 assert(n <= 7 * sizeof(uint16_t)); 51 const __m256 vacc = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i)); 52 53 __m128 vacc_lo = _mm256_castps256_ps128(vacc); 54 if (n & (4 * sizeof(uint16_t))) { 55 _mm_storeu_ps(output, vacc_lo); 56 vacc_lo = _mm256_extractf128_ps(vacc, 1); 57 output += 4; 58 } 59 if (n & (2 * sizeof(uint16_t))) { 60 _mm_storel_pi((__m64*) output, vacc_lo); 61 vacc_lo = _mm_movehl_ps(vacc_lo, vacc_lo); 62 output += 2; 63 } 64 if (n & (1 * sizeof(uint16_t))) { 65 _mm_store_ss(output, vacc_lo); 66 } 67 } 68} 69