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// Copyright 2021 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
$SIMD_TILE = BATCH_TILE // 8
#include <assert.h>
#include <immintrin.h>
#include <xnnpack/common.h>
#include <xnnpack/vcvt.h>
void xnn_f16_f32_vcvt_ukernel__f16c_x${BATCH_TILE}(
size_t batch,
const void* input,
float* output,
const union xnn_f16_f32_cvt_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;
$if BATCH_TILE > 8:
for (; batch >= ${BATCH_TILE} * sizeof(uint16_t); batch -= ${BATCH_TILE} * sizeof(uint16_t)) {
const __m256 vacc0 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i));
$for N in range(1, SIMD_TILE):
const __m256 vacc${N} = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) (i + ${N * 8})));
i += ${BATCH_TILE};
_mm256_storeu_ps(output, vacc0);
$for N in range(1, SIMD_TILE):
_mm256_storeu_ps(output + ${N * 8}, vacc${N});
output += ${BATCH_TILE};
}
for (; batch >= 8 * sizeof(uint16_t); batch -= 8 * sizeof(uint16_t)) {
const __m256 vacc = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i));
i += 8;
_mm256_storeu_ps(output, vacc);
output += 8;
}
if XNN_UNLIKELY(batch != 0) {
assert(batch >= 1 * sizeof(uint16_t));
assert(batch <= 7 * sizeof(uint16_t));
const __m256 vacc = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i));
__m128 vacc_lo = _mm256_castps256_ps128(vacc);
if (batch & (4 * sizeof(uint16_t))) {
_mm_storeu_ps(output, vacc_lo);
vacc_lo = _mm256_extractf128_ps(vacc, 1);
output += 4;
}
if (batch & (2 * sizeof(uint16_t))) {
_mm_storel_pi((__m64*) output, vacc_lo);
vacc_lo = _mm_movehl_ps(vacc_lo, vacc_lo);
output += 2;
}
if (batch & (1 * sizeof(uint16_t))) {
_mm_store_ss(output, vacc_lo);
}
}
}
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