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$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" 9#include <assert.h> 10 11#include <wasm_simd128.h> 12 13#include <xnnpack/common.h> 14#include <xnnpack/vunary.h> 15 16 17void xnn_f32_vlrelu_ukernel__wasmsimd_bitselect_x${BATCH_TILE}( 18 size_t n, 19 const float* x, 20 float* y, 21 const union xnn_f32_lrelu_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN 22{ 23 assert(n != 0); 24 assert(n % sizeof(float) == 0); 25 26 const v128_t vslope = wasm_v32x4_load_splat(¶ms->scalar.slope); 27 const v128_t vzero = wasm_f32x4_splat(0.0f); 28 $if BATCH_TILE > 4: 29 for (; n >= ${BATCH_TILE} * sizeof(float); n -= ${BATCH_TILE} * sizeof(float)) { 30 const v128_t vx${ABC[0:4]} = wasm_v128_load(x); 31 $for N in range(4, BATCH_TILE, 4): 32 const v128_t vx${ABC[N:N+4]} = wasm_v128_load(x + ${N}); 33 x += ${BATCH_TILE}; 34 35 $for N in range(0, BATCH_TILE, 4): 36 v128_t vacc${ABC[N:N+4]} = wasm_f32x4_mul(vx${ABC[N:N+4]}, vslope); 37 const v128_t vmask${ABC[N:N+4]} = wasm_i32x4_lt(vx${ABC[N:N+4]}, vzero); 38 39 $for N in range(0, BATCH_TILE, 4): 40 vacc${ABC[N:N+4]} = wasm_v128_bitselect(vacc${ABC[N:N+4]}, vx${ABC[N:N+4]}, vmask${ABC[N:N+4]}); 41 42 wasm_v128_store(y, vacc${ABC[0:4]}); 43 $for N in range(4, BATCH_TILE, 4): 44 wasm_v128_store(y + ${N}, vacc${ABC[N:N+4]}); 45 y += ${BATCH_TILE}; 46 } 47 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) { 48 const v128_t vx = wasm_v128_load(x); 49 x += 4; 50 v128_t vacc = wasm_f32x4_mul(vx, vslope); 51 const v128_t vmask = wasm_i32x4_lt(vx, vzero); 52 vacc = wasm_v128_bitselect(vacc, vx, vmask); 53 wasm_v128_store(y, vacc); 54 y += 4; 55 } 56 if XNN_UNLIKELY(n != 0) { 57 const v128_t vx = wasm_v128_load(x); 58 v128_t vacc = wasm_f32x4_mul(vx, vslope); 59 const v128_t vmask = wasm_i32x4_lt(vx, vzero); 60 vacc = wasm_v128_bitselect(vacc, vx, vmask); 61 62 if (n & (2 * sizeof(float))) { 63 *((double*) y) = wasm_f64x2_extract_lane(vacc, 0); 64 vacc = wasm_v32x4_shuffle(vacc, vacc, 2, 3, 2, 3); 65 y += 2; 66 } 67 if (n & (1 * sizeof(float))) { 68 *y = wasm_f32x4_extract_lane(vacc, 0); 69 } 70 } 71} 72