|
|
|
|
|
|
|
|
|
|
|
#include <assert.h> |
|
|
|
#include <arm_neon.h> |
|
|
|
#include <xnnpack/argmaxpool.h> |
|
|
|
|
|
void xnn_f32_argmaxpool_ukernel_4x__neon_c4( |
|
size_t output_pixels, |
|
size_t pooling_elements, |
|
size_t channels, |
|
const float** input, |
|
size_t input_offset, |
|
float* output, |
|
uint32_t* index, |
|
size_t input_increment, |
|
size_t output_increment) XNN_OOB_READS |
|
{ |
|
assert(output_pixels != 0); |
|
assert(pooling_elements != 0); |
|
assert(pooling_elements <= 4); |
|
assert(channels != 0); |
|
|
|
do { |
|
const float* i0 = input[0]; |
|
const float* i1 = input[1]; |
|
const float* i2 = input[2]; |
|
const float* i3 = input[3]; |
|
i0 = (const float*) ((uintptr_t) i0 + input_offset); |
|
i1 = (const float*) ((uintptr_t) i1 + input_offset); |
|
i2 = (const float*) ((uintptr_t) i2 + input_offset); |
|
i3 = (const float*) ((uintptr_t) i3 + input_offset); |
|
if (pooling_elements < 2) { |
|
i1 = i0; |
|
} |
|
if (pooling_elements <= 2) { |
|
i2 = i0; |
|
} |
|
if (pooling_elements != 4) { |
|
i3 = i0; |
|
} |
|
|
|
size_t c = channels; |
|
for (; c >= 4; c -= 4) { |
|
const float32x4_t vi0 = vld1q_f32(i0); i0 += 4; |
|
const float32x4_t vi1 = vld1q_f32(i1); i1 += 4; |
|
const float32x4_t vi2 = vld1q_f32(i2); i2 += 4; |
|
const float32x4_t vi3 = vld1q_f32(i3); i3 += 4; |
|
|
|
float32x4_t vmax = vi0; |
|
uint32x4_t vidx = vmovq_n_u32(0); |
|
|
|
const uint32x4_t vm1 = vcgtq_f32(vi1, vmax); |
|
vmax = vbslq_f32(vm1, vi1, vmax); |
|
vidx = vbslq_u32(vm1, vmovq_n_u32(1), vidx); |
|
|
|
const uint32x4_t vm2 = vcgtq_f32(vi2, vmax); |
|
vmax = vbslq_f32(vm2, vi2, vmax); |
|
vidx = vbslq_u32(vm2, vmovq_n_u32(2), vidx); |
|
|
|
const uint32x4_t vm3 = vcgtq_f32(vi3, vmax); |
|
vmax = vbslq_f32(vm3, vi3, vmax); |
|
vidx = vbslq_u32(vm3, vmovq_n_u32(3), vidx); |
|
|
|
vst1q_f32(output, vmax); output += 4; |
|
vst1q_u32(index, vidx); index += 4; |
|
} |
|
if (c != 0) { |
|
const float32x4_t vi0 = vld1q_f32(i0); |
|
const float32x4_t vi1 = vld1q_f32(i1); |
|
const float32x4_t vi2 = vld1q_f32(i2); |
|
const float32x4_t vi3 = vld1q_f32(i3); |
|
|
|
float32x4_t vmax = vi0; |
|
uint32x4_t vidx = vmovq_n_u32(0); |
|
|
|
const uint32x4_t vm1 = vcgtq_f32(vi1, vmax); |
|
vmax = vbslq_f32(vm1, vi1, vmax); |
|
vidx = vbslq_u32(vm1, vmovq_n_u32(1), vidx); |
|
|
|
const uint32x4_t vm2 = vcgtq_f32(vi2, vmax); |
|
vmax = vbslq_f32(vm2, vi2, vmax); |
|
vidx = vbslq_u32(vm2, vmovq_n_u32(2), vidx); |
|
|
|
const uint32x4_t vm3 = vcgtq_f32(vi3, vmax); |
|
vmax = vbslq_f32(vm3, vi3, vmax); |
|
vidx = vbslq_u32(vm3, vmovq_n_u32(3), vidx); |
|
|
|
float32x2_t vmax_lo = vget_low_f32(vmax); |
|
uint32x2_t vidx_lo = vget_low_u32(vidx); |
|
if (c & 2) { |
|
vst1_f32(output, vmax_lo); output += 2; |
|
vst1_u32(index, vidx_lo); index += 2; |
|
vmax_lo = vget_high_f32(vmax); |
|
vidx_lo = vget_high_u32(vidx); |
|
} |
|
if (c & 1) { |
|
vst1_lane_f32(output, vmax_lo, 0); output += 1; |
|
vst1_lane_u32(index, vidx_lo, 0); index += 1; |
|
} |
|
} |
|
input = (const float**) ((uintptr_t) input + input_increment); |
|
output = (float*) ((uintptr_t) output + output_increment); |
|
} while (--output_pixels != 0); |
|
} |
|
|
