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// Auto-generated file. Do not edit!
// Template: src/f16-vsigmoid/avx2.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/common.h>
#include <xnnpack/intrinsics-polyfill.h>
#include <xnnpack/vunary.h>
void xnn_f16_vsigmoid_ukernel__avx2_rr1_p2_div_x8(
size_t batch,
const void* input,
void* output,
const union xnn_f16_sigmoid_params params[restrict XNN_MIN_ELEMENTS(1)])
{
assert(batch != 0);
assert(batch % sizeof(uint16_t) == 0);
assert(input != NULL);
assert(output != NULL);
const __m256 vsign_mask = _mm256_load_ps(params->avx2_rr1_p2.sign_mask);
const __m256 vmagic_bias = _mm256_load_ps(params->avx2_rr1_p2.magic_bias);
const __m256 vlog2e = _mm256_load_ps(params->avx2_rr1_p2.log2e);
const __m256 vminus_ln2 = _mm256_load_ps(params->avx2_rr1_p2.minus_ln2);
const __m256 vc2 = _mm256_load_ps(params->avx2_rr1_p2.c2);
const __m256 vc1 = _mm256_load_ps(params->avx2_rr1_p2.c1);
const __m256 vone = _mm256_load_ps(params->avx2_rr1_p2.one);
const __m256 vdenorm_cutoff = _mm256_load_ps(params->avx2_rr1_p2.denorm_cutoff);
const uint16_t* i = (const uint16_t*) input;
uint16_t* o = (uint16_t*) output;
for (; batch >= 8 * sizeof(uint16_t); batch -= 8 * sizeof(uint16_t)) {
const __m256 vx = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i));
i += 8;
const __m256 vz = _mm256_or_ps(vx, vsign_mask);
__m256 vn = _mm256_fmadd_ps(vz, vlog2e, vmagic_bias);
const __m256 vs = _mm256_castsi256_ps(_mm256_slli_epi32(_mm256_castps_si256(vn), 23));
vn = _mm256_sub_ps(vn, vmagic_bias);
__m256 vt = _mm256_fmadd_ps(vn, vminus_ln2, vz);
const __m256 vp = _mm256_fmadd_ps(vc2, vt, vc1);
vt = _mm256_mul_ps(vt, vs);
const __m256 ve = _mm256_fmadd_ps(vt, vp, vs);
const __m256 vd = _mm256_add_ps(ve, vone);
__m256 vf = _mm256_div_ps(ve, vd);
vf = _mm256_andnot_ps(_mm256_cmp_ps(vz, vdenorm_cutoff, _CMP_LT_OS), vf);
vf = _mm256_blendv_ps(_mm256_sub_ps(vone, vf), vf, vx);
_mm_storeu_si128((__m128i*) o, _mm256_cvtps_ph(vf, _MM_FROUND_TO_NEAREST_INT));
o += 8;
}
if XNN_UNLIKELY(batch != 0) {
assert(batch >= 1 * sizeof(uint16_t));
assert(batch <= 7 * sizeof(uint16_t));
const __m256 vx = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i));
const __m256 vz = _mm256_or_ps(vx, vsign_mask);
__m256 vn = _mm256_fmadd_ps(vz, vlog2e, vmagic_bias);
const __m256 vs = _mm256_castsi256_ps(_mm256_slli_epi32(_mm256_castps_si256(vn), 23));
vn = _mm256_sub_ps(vn, vmagic_bias);
__m256 vt = _mm256_fmadd_ps(vn, vminus_ln2, vz);
const __m256 vp = _mm256_fmadd_ps(vc2, vt, vc1);
vt = _mm256_mul_ps(vt, vs);
const __m256 ve = _mm256_fmadd_ps(vt, vp, vs);
const __m256 vd = _mm256_add_ps(ve, vone);
__m256 vf = _mm256_div_ps(ve, vd);
vf = _mm256_andnot_ps(_mm256_cmp_ps(vz, vdenorm_cutoff, _CMP_LT_OS), vf);
vf = _mm256_blendv_ps(_mm256_sub_ps(vone, vf), vf, vx);
__m128i vh = _mm256_cvtps_ph(vf, _MM_FROUND_TO_NEAREST_INT);
if (batch & (4 * sizeof(uint16_t))) {
_mm_storel_epi64((__m128i*) o, vh);
vh = _mm_unpackhi_epi64(vh, vh);
o += 4;
}
if (batch & (2 * sizeof(uint16_t))) {
_mm_storeu_si32(o, vh);
vh = _mm_srli_epi64(vh, 32);
o += 2;
}
if (batch & (1 * sizeof(uint16_t))) {
*o = (uint16_t) _mm_extract_epi16(vh, 0);
}
}
}
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