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// Auto-generated file. Do not edit!
// Template: src/f16-prelu/f16c.c.in
// Generator: tools/xngen
//
// 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/math.h>
#include <xnnpack/prelu.h>
void xnn_f16_prelu_ukernel__f16c_2x8(
size_t rows,
size_t channels,
const void* restrict input,
size_t input_stride,
const void* restrict weights,
void* restrict output,
size_t output_stride) XNN_OOB_READS
{
assert(rows != 0);
assert(channels != 0);
assert(channels % sizeof(uint16_t) == 0);
const uint16_t* i0 = (const uint16_t*) input;
uint16_t* o0 = (uint16_t*) output;
const uint16_t* i1 = (const uint16_t*) ((uintptr_t) i0 + input_stride);
uint16_t* o1 = (uint16_t*) ((uintptr_t) o0 + output_stride);
const size_t input_increment = input_stride * 2 - channels;
const size_t output_increment = output_stride * 2 - channels;
do {
if XNN_UNPREDICTABLE(rows < 2) {
i1 = i0;
o1 = o0;
}
const uint16_t* w = (const uint16_t*) weights;
size_t c = channels;
for (; c >= 8 * sizeof(uint16_t); c -= 8 * sizeof(uint16_t)) {
const __m256 vw01234567 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) w));
w += 8;
const __m256 vi0x01234567 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i0));
i0 += 8;
const __m256 vi1x01234567 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i1));
i1 += 8;
__m256 vacc0x01234567 = _mm256_mul_ps(vi0x01234567, vw01234567);
__m256 vacc1x01234567 = _mm256_mul_ps(vi1x01234567, vw01234567);
vacc0x01234567 = _mm256_blendv_ps(vi0x01234567, vacc0x01234567, vi0x01234567);
vacc1x01234567 = _mm256_blendv_ps(vi1x01234567, vacc1x01234567, vi1x01234567);
_mm_storeu_si128((__m128i*) o0, _mm256_cvtps_ph(vacc0x01234567, _MM_FROUND_TO_NEAREST_INT));
o0 += 8;
_mm_storeu_si128((__m128i*) o1, _mm256_cvtps_ph(vacc1x01234567, _MM_FROUND_TO_NEAREST_INT));
o1 += 8;
}
if XNN_UNLIKELY(c != 0) {
const __m256 vw01234567 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) w));
const __m256 vi0x01234567 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i0));
i0 = (const uint16_t*) ((uintptr_t) i0 + c);
const __m256 vi1x01234567 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i1));
i1 = (const uint16_t*) ((uintptr_t) i1 + c);
__m256 vacc0x01234567 = _mm256_mul_ps(vi0x01234567, vw01234567);
__m256 vacc1x01234567 = _mm256_mul_ps(vi1x01234567, vw01234567);
vacc0x01234567 = _mm256_blendv_ps(vi0x01234567, vacc0x01234567, vi0x01234567);
vacc1x01234567 = _mm256_blendv_ps(vi1x01234567, vacc1x01234567, vi1x01234567);
__m128i vh0x01234567 = _mm256_cvtps_ph(vacc0x01234567, _MM_FROUND_TO_NEAREST_INT);
__m128i vh1x01234567 = _mm256_cvtps_ph(vacc1x01234567, _MM_FROUND_TO_NEAREST_INT);
if (c & (4 * sizeof(uint16_t))) {
_mm_storel_epi64((__m128i*) o0, vh0x01234567);
_mm_storel_epi64((__m128i*) o1, vh1x01234567);
vh0x01234567 = _mm_unpackhi_epi64(vh0x01234567, vh0x01234567);
vh1x01234567 = _mm_unpackhi_epi64(vh1x01234567, vh1x01234567);
o0 += 4;
o1 += 4;
}
if (c & (2 * sizeof(uint16_t))) {
_mm_storeu_si32(o0, vh0x01234567);
_mm_storeu_si32(o1, vh1x01234567);
vh0x01234567 = _mm_srli_epi64(vh0x01234567, 32);
vh1x01234567 = _mm_srli_epi64(vh1x01234567, 32);
o0 += 2;
o1 += 2;
}
if (c & (1 * sizeof(uint16_t))) {
*o0 = (uint16_t) _mm_extract_epi16(vh0x01234567, 0);
*o1 = (uint16_t) _mm_extract_epi16(vh1x01234567, 0);
o0 += 1;
o1 += 1;
}
}
i0 = (const uint16_t*) ((uintptr_t) i0 + input_increment);
o0 = (uint16_t*) ((uintptr_t) o0 + output_increment);
i1 = (const uint16_t*) ((uintptr_t) i1 + input_increment);
o1 = (uint16_t*) ((uintptr_t) o1 + output_increment);
rows = doz(rows, 2);
} while (rows != 0);
}
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