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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.
$assert BATCH_TILE % 8 == 0
$assert BATCH_TILE >= 8
$SIMD_TILE = BATCH_TILE // 8
$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
$assert OP == "SQR"
#include <assert.h>
#include <immintrin.h>
#include <xnnpack/common.h>
#include <xnnpack/intrinsics-polyfill.h>
#include <xnnpack/vunary.h>
void xnn_f16_vsqr_ukernel__f16c_x${BATCH_TILE}(
size_t batch,
const void* input,
void* output,
const union xnn_f16_default_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
{
assert(batch != 0);
assert(batch % sizeof(uint16_t) == 0);
assert(input != NULL);
assert(output != NULL);
const uint16_t* i = (const uint16_t*) input;
uint16_t* o = (uint16_t*) output;
$if BATCH_TILE > 8:
for (; batch >= ${BATCH_TILE} * sizeof(uint16_t); batch -= ${BATCH_TILE} * sizeof(uint16_t)) {
__m256 vacc${ABC[0]} = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i));
$for N in range(1, SIMD_TILE):
__m256 vacc${ABC[N]} = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) (i + ${N*8})));
i += ${BATCH_TILE};
$for N in range(SIMD_TILE):
vacc${ABC[N]} = _mm256_mul_ps(vacc${ABC[N]}, vacc${ABC[N]});
_mm_storeu_si128((__m128i*) o, _mm256_cvtps_ph(vacc${ABC[0]}, _MM_FROUND_TO_NEAREST_INT));
$for N in range(1, SIMD_TILE):
_mm_storeu_si128((__m128i*) (o + ${N*8}), _mm256_cvtps_ph(vacc${ABC[N]}, _MM_FROUND_TO_NEAREST_INT));
o += ${BATCH_TILE};
}
for (; batch >= 8 * sizeof(uint16_t); batch -= 8 * sizeof(uint16_t)) {
__m256 vacc = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i));
i += 8;
vacc = _mm256_mul_ps(vacc, vacc);
_mm_storeu_si128((__m128i*) o, _mm256_cvtps_ph(vacc, _MM_FROUND_TO_NEAREST_INT));
o += 8;
}
if XNN_UNLIKELY(batch != 0) {
__m256 vacc = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i));
vacc = _mm256_mul_ps(vacc, vacc);
__m128i vh = _mm256_cvtps_ph(vacc, _MM_FROUND_TO_NEAREST_INT);
if (batch & (4 * sizeof(uint16_t))) {
_mm_storel_epi64((__m128i*) o, vh);
o += 4;
vh = _mm_unpackhi_epi64(vh, vh);
}
if (batch & (2 * sizeof(uint16_t))) {
_mm_storeu_si32(o, vh);
o += 2;
vh = _mm_srli_epi64(vh, 32);
}
if (batch & (1 * sizeof(uint16_t))) {
*o = (uint16_t) _mm_extract_epi16(vh, 0);
}
}
}
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