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// Copyright 2022 Google LLC
//
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree.
#include <assert.h>
#include <immintrin.h>
#include <xnnpack/intrinsics-polyfill.h>
#include <xnnpack/pavgpool.h>
void xnn_f16_pavgpool_minmax_ukernel_9x__avx2_c8(
size_t output_pixels,
size_t kernel_elements,
size_t channels,
const void** input,
size_t input_offset,
const void* zero,
const void* multiplier,
void* output,
size_t input_increment,
size_t output_increment,
const union xnn_f16_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
{
assert(output_pixels != 0);
assert(kernel_elements != 0);
assert(kernel_elements <= 9);
assert(channels != 0);
const __m256 voutput_min = _mm256_load_ps(params->avx.min);
const __m256 voutput_max = _mm256_load_ps(params->avx.max);
uint16_t* o = (uint16_t*) output;
do {
const uint16_t* i0 = (const uint16_t*) input[0];
assert(i0 != NULL);
const uint16_t* i1 = (const uint16_t*) input[1];
const uint16_t* i2 = (const uint16_t*) input[2];
const uint16_t* i3 = (const uint16_t*) input[3];
const uint16_t* i4 = (const uint16_t*) input[4];
const uint16_t* i5 = (const uint16_t*) input[5];
const uint16_t* i6 = (const uint16_t*) input[6];
const uint16_t* i7 = (const uint16_t*) input[7];
const uint16_t* i8 = (const uint16_t*) input[8];
input = (const void**) ((uintptr_t) input + input_increment);
if (kernel_elements < 2) {
i1 = (const uint16_t*) zero;
}
assert(i1 != NULL);
if (kernel_elements <= 2) {
i2 = (const uint16_t*) zero;
}
assert(i2 != NULL);
if (kernel_elements < 4) {
i3 = (const uint16_t*) zero;
}
assert(i3 != NULL);
if (kernel_elements <= 4) {
i4 = (const uint16_t*) zero;
}
assert(i4 != NULL);
if (kernel_elements < 6) {
i5 = (const uint16_t*) zero;
}
assert(i5 != NULL);
if (kernel_elements <= 6) {
i6 = (const uint16_t*) zero;
}
assert(i6 != NULL);
if (kernel_elements < 8) {
i7 = (const uint16_t*) zero;
}
assert(i7 != NULL);
if (kernel_elements <= 8) {
i8 = (const uint16_t*) zero;
}
assert(i8 != NULL);
if XNN_UNPREDICTABLE(i0 != zero) {
i0 = (const uint16_t*) ((uintptr_t) i0 + input_offset);
}
if XNN_UNPREDICTABLE(i1 != zero) {
i1 = (const uint16_t*) ((uintptr_t) i1 + input_offset);
}
if XNN_UNPREDICTABLE(i2 != zero) {
i2 = (const uint16_t*) ((uintptr_t) i2 + input_offset);
}
if XNN_UNPREDICTABLE(i3 != zero) {
i3 = (const uint16_t*) ((uintptr_t) i3 + input_offset);
}
if XNN_UNPREDICTABLE(i4 != zero) {
i4 = (const uint16_t*) ((uintptr_t) i4 + input_offset);
}
if XNN_UNPREDICTABLE(i5 != zero) {
i5 = (const uint16_t*) ((uintptr_t) i5 + input_offset);
}
if XNN_UNPREDICTABLE(i6 != zero) {
i6 = (const uint16_t*) ((uintptr_t) i6 + input_offset);
}
if XNN_UNPREDICTABLE(i7 != zero) {
i7 = (const uint16_t*) ((uintptr_t) i7 + input_offset);
}
if XNN_UNPREDICTABLE(i8 != zero) {
i8 = (const uint16_t*) ((uintptr_t) i8 + input_offset);
}
const __m256 vmultiplier = _mm256_cvtph_ps(_mm_set1_epi16((short) *((const uint16_t*) multiplier)));
multiplier = (const uint16_t*) multiplier + 1;
size_t c = channels;
while (c >= 8) {
const __m256 vi0 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i0));
i0 += 8;
const __m256 vi1 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i1));
i1 += 8;
const __m256 vi2 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i2));
i2 += 8;
const __m256 vi3 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i3));
i3 += 8;
const __m256 vi4 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i4));
i4 += 8;
const __m256 vi5 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i5));
i5 += 8;
const __m256 vi6 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i6));
i6 += 8;
const __m256 vi7 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i7));
i7 += 8;
const __m256 vi8 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i8));
i8 += 8;
const __m256 vsum01 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vi0, vi1), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum23 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vi2, vi3), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum45 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vi4, vi5), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum67 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vi6, vi7), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum018 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vsum01, vi8), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum2345 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vsum23, vsum45), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum01678 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vsum018, vsum67), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vsum2345, vsum01678), _MM_FROUND_TO_NEAREST_INT));
__m256 vout = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_mul_ps(vsum, vmultiplier), _MM_FROUND_TO_NEAREST_INT));
vout = _mm256_max_ps(vout, voutput_min);
vout = _mm256_min_ps(vout, voutput_max);
_mm_storeu_si128((__m128i*) o, _mm256_cvtps_ph(vout, _MM_FROUND_TO_NEAREST_INT));
o += 8;
c -= 8;
}
if (c != 0) {
const __m256 vi0 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i0));
const __m256 vi1 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i1));
const __m256 vi2 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i2));
const __m256 vi3 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i3));
const __m256 vi4 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i4));
const __m256 vi5 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i5));
const __m256 vi6 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i6));
const __m256 vi7 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i7));
const __m256 vi8 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i8));
const __m256 vsum01 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vi0, vi1), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum23 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vi2, vi3), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum45 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vi4, vi5), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum67 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vi6, vi7), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum018 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vsum01, vi8), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum2345 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vsum23, vsum45), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum01678 = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vsum018, vsum67), _MM_FROUND_TO_NEAREST_INT));
const __m256 vsum = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_add_ps(vsum2345, vsum01678), _MM_FROUND_TO_NEAREST_INT));
__m256 vout = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_mul_ps(vsum, vmultiplier), _MM_FROUND_TO_NEAREST_INT));
vout = _mm256_max_ps(vout, voutput_min);
vout = _mm256_min_ps(vout, voutput_max);
__m128i vh = _mm256_cvtps_ph(vout, _MM_FROUND_TO_NEAREST_INT);
if (c & 4) {
_mm_storel_epi64((__m128i*) o, vh);
vh = _mm_unpackhi_epi64(vh, vh);
o += 4;
}
if (c & 2) {
_mm_storeu_si32(o, vh);
vh = _mm_srli_epi64(vh, 32);
o += 2;
}
if (c & 1) {
*o = (uint16_t) _mm_extract_epi16(vh, 0);
o += 1;
}
}
o = (uint16_t*) ((uintptr_t) o + output_increment);
} while (--output_pixels != 0);
}
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