1// Copyright 2022 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$SIMD_TILE = BATCH_TILE // 8 9$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" 10#include <assert.h> 11 12#include <immintrin.h> 13 14#include <xnnpack/common.h> 15#include <xnnpack/intrinsics-polyfill.h> 16#include <xnnpack/vunary.h> 17 18 19void xnn_f16_vsqrt_ukernel__f16c_sqrt_x${BATCH_TILE}( 20 size_t n, 21 const void* input, 22 void* output, 23 const union xnn_f16_sqrt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS 24{ 25 assert(n != 0); 26 assert(n % sizeof(uint16_t) == 0); 27 assert(input != NULL); 28 assert(output != NULL); 29 30 const uint16_t* i = (const uint16_t*) input; 31 uint16_t* o = (uint16_t*) output; 32 $if BATCH_TILE > 8: 33 for (; n >= ${BATCH_TILE} * sizeof(uint16_t); n -= ${BATCH_TILE} * sizeof(uint16_t)) { 34 __m256 vacc${ABC[0]} = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i)); 35 $for N in range(1, SIMD_TILE): 36 __m256 vacc${ABC[N]} = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) (i + ${N*8}))); 37 i += ${BATCH_TILE}; 38 39 $for N in range(SIMD_TILE): 40 vacc${ABC[N]} = _mm256_sqrt_ps(vacc${ABC[N]}); 41 42 _mm_storeu_si128((__m128i*) o, _mm256_cvtps_ph(vacc${ABC[0]}, _MM_FROUND_NO_EXC)); 43 $for N in range(1, SIMD_TILE): 44 _mm_storeu_si128((__m128i*) (o + ${N*8}), _mm256_cvtps_ph(vacc${ABC[N]}, _MM_FROUND_NO_EXC)); 45 o += ${BATCH_TILE}; 46 } 47 for (; n >= 8 * sizeof(uint16_t); n -= 8 * sizeof(uint16_t)) { 48 __m256 vacc = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i)); 49 i += 8; 50 vacc = _mm256_sqrt_ps(vacc); 51 _mm_storeu_si128((__m128i*) o, _mm256_cvtps_ph(vacc, _MM_FROUND_NO_EXC)); 52 o += 8; 53 } 54 if XNN_UNLIKELY(n != 0) { 55 __m256 vacc = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i)); 56 vacc = _mm256_sqrt_ps(vacc); 57 __m128i vh = _mm256_cvtps_ph(vacc, _MM_FROUND_NO_EXC); 58 if (n & (4 * sizeof(uint16_t))) { 59 _mm_storel_epi64((__m128i*) o, vh); 60 o += 4; 61 vh = _mm_unpackhi_epi64(vh, vh); 62 } 63 if (n & (2 * sizeof(uint16_t))) { 64 _mm_storeu_si32(o, vh); 65 o += 2; 66 vh = _mm_srli_epi64(vh, 32); 67 } 68 if (n & (1 * sizeof(uint16_t))) { 69 *o = (uint16_t) _mm_extract_epi16(vh, 0); 70 } 71 } 72} 73