1// Copyright 2020 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$assert BATCH_TILE % 4 == 0 7$assert BATCH_TILE >= 4 8$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" 9#include <assert.h> 10 11#include <xmmintrin.h> 12 13#include <xnnpack/common.h> 14#include <xnnpack/vunary.h> 15 16 17void xnn_f32_vsqrt_ukernel__sse_sqrt_x${BATCH_TILE}( 18 size_t n, 19 const float* x, 20 float* y, 21 const union xnn_f32_sqrt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS 22{ 23 assert(n != 0); 24 assert(n % sizeof(float) == 0); 25 26 $if BATCH_TILE > 4: 27 for (; n >= ${BATCH_TILE} * sizeof(float); n -= ${BATCH_TILE} * sizeof(float)) { 28 const __m128 vx${ABC[0:4]} = _mm_loadu_ps(x); 29 $for N in range(4, BATCH_TILE, 4): 30 const __m128 vx${ABC[N:N+4]} = _mm_loadu_ps(x + ${N}); 31 x += ${BATCH_TILE}; 32 33 $for N in range(0, BATCH_TILE, 4): 34 const __m128 vy${ABC[N:N+4]} = _mm_sqrt_ps(vx${ABC[N:N+4]}); 35 36 _mm_storeu_ps(y, vy${ABC[0:4]}); 37 $for N in range(4, BATCH_TILE, 4): 38 _mm_storeu_ps(y + ${N}, vy${ABC[N:N+4]}); 39 y += ${BATCH_TILE}; 40 } 41 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) { 42 const __m128 vx = _mm_loadu_ps(x); 43 x += 4; 44 const __m128 vy = _mm_sqrt_ps(vx); 45 _mm_storeu_ps(y, vy); 46 y += 4; 47 } 48 if XNN_UNLIKELY(n != 0) { 49 const __m128 vx = _mm_loadu_ps(x); 50 __m128 vy = _mm_sqrt_ps(vx); 51 if (n & (2 * sizeof(float))) { 52 _mm_storel_pi((__m64*) y, vy); 53 vy = _mm_movehl_ps(vy, vy); 54 y += 2; 55 } 56 if (n & (1 * sizeof(float))) { 57 _mm_store_ss(y, vy); 58 } 59 } 60} 61