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$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" 9#include <assert.h> 10#include <math.h> 11 12#include <wasm_simd128.h> 13 14#include <xnnpack/common.h> 15#include <xnnpack/vunary.h> 16 17 18void xnn_f32_vsqrt_ukernel__wasmsimd_sqrt_x${BATCH_TILE}( 19 size_t n, 20 const float* x, 21 float* y, 22 const union xnn_f32_sqrt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS 23{ 24 assert(n != 0); 25 assert(n % sizeof(float) == 0); 26 27 $if BATCH_TILE > 4: 28 for (; n >= ${BATCH_TILE} * sizeof(float); n -= ${BATCH_TILE} * sizeof(float)) { 29 const v128_t vx${ABC[0:4]} = wasm_v128_load(x); 30 $for N in range(4, BATCH_TILE, 4): 31 const v128_t vx${ABC[N:N+4]} = wasm_v128_load(x + ${N}); 32 x += ${BATCH_TILE}; 33 34 $for N in range(0, BATCH_TILE, 4): 35 const v128_t vy${ABC[N:N+4]} = wasm_f32x4_sqrt(vx${ABC[N:N+4]}); 36 37 wasm_v128_store(y, vy${ABC[0:4]}); 38 $for N in range(4, BATCH_TILE, 4): 39 wasm_v128_store(y + ${N}, vy${ABC[N:N+4]}); 40 y += ${BATCH_TILE}; 41 } 42 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) { 43 const v128_t vx = wasm_v128_load(x); 44 x += 4; 45 const v128_t vy = wasm_f32x4_sqrt(vx); 46 wasm_v128_store(y, vy); 47 y += 4; 48 } 49 if XNN_UNLIKELY(n != 0) { 50 const v128_t vx = wasm_v128_load(x); 51 v128_t vy = wasm_f32x4_sqrt(vx); 52 if (n & (2 * sizeof(float))) { 53 *((double*) y) = wasm_f64x2_extract_lane(vy, 0); 54 vy = wasm_v64x2_shuffle(vy, vy, 1, 1); 55 y += 2; 56 } 57 if (n & (1 * sizeof(float))) { 58 *y = wasm_f32x4_extract_lane(vy, 0); 59 } 60 } 61} 62