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$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" 9#include <assert.h> 10 11#include <arm_neon.h> 12 13#include <xnnpack/common.h> 14#include <xnnpack/vunary.h> 15 16 17void xnn_f32_vlrelu_ukernel__neon_x${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 float32x4_t vslope = vld1q_dup_f32(¶ms->scalar.slope); 27 28 for (; n >= ${BATCH_TILE} * sizeof(float); n -= ${BATCH_TILE} * sizeof(float)) { 29 $for N in range(0, BATCH_TILE, 4): 30 const float32x4_t vx${ABC[N:N+4]} = vld1q_f32(x); x += 4; 31 32 $for N in range(0, BATCH_TILE, 4): 33 float32x4_t vacc${ABC[N:N+4]} = vmulq_f32(vx${ABC[N:N+4]}, vslope); 34 const uint32x4_t vmask${ABC[N:N+4]} = vcltq_s32(vreinterpretq_s32_f32(vx${ABC[N:N+4]}), vmovq_n_s32(0)); 35 36 $for N in range(0, BATCH_TILE, 4): 37 vacc${ABC[N:N+4]} = vbslq_f32(vmask${ABC[N:N+4]}, vacc${ABC[N:N+4]}, vx${ABC[N:N+4]}); 38 39 $for N in range(0, BATCH_TILE, 4): 40 vst1q_f32(y, vacc${ABC[N:N+4]}); y += 4; 41 } 42 $if BATCH_TILE > 4: 43 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) { 44 const float32x4_t vx = vld1q_f32(x); x += 4; 45 float32x4_t vacc = vmulq_f32(vx, vslope); 46 const uint32x4_t vmask = vcltq_s32(vreinterpretq_s32_f32(vx), vmovq_n_s32(0)); 47 vacc = vbslq_f32(vmask, vacc, vx); 48 vst1q_f32(y, vacc); y += 4; 49 } 50 if XNN_UNLIKELY(n != 0) { 51 const float32x4_t vx = vld1q_f32(x); 52 float32x4_t vacc = vmulq_f32(vx, vslope); 53 const uint32x4_t vmask = vcltq_s32(vreinterpretq_s32_f32(vx), vmovq_n_s32(0)); 54 vacc = vbslq_f32(vmask, vacc, vx); 55 56 float32x2_t vacc_lo = vget_low_f32(vacc); 57 if (n & (2 * sizeof(float))) { 58 vst1_f32(y, vacc_lo); y += 2; 59 vacc_lo = vget_high_f32(vacc); 60 } 61 if (n & (1 * sizeof(float))) { 62 vst1_lane_f32(y, vacc_lo, 0); 63 } 64 } 65} 66