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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.
#include <assert.h>
#include <immintrin.h>
#include <xnnpack/common.h>
#include <xnnpack/intrinsics-polyfill.h>
#include <xnnpack/lut.h>
void xnn_x8_lut_ukernel__avx512vbmi_vpermx2b_x128(
size_t batch,
const uint8_t* input,
uint8_t* output,
const uint8_t table[restrict XNN_MIN_ELEMENTS(256)])
{
assert(batch != 0);
assert(batch % sizeof(uint8_t) == 0);
assert(input != NULL);
assert(output != NULL);
const __m512i vtable0 = _mm512_loadu_si512(table);
const __m512i vtable1 = _mm512_loadu_si512(table + 64);
const __m512i vtable2 = _mm512_loadu_si512(table + 128);
const __m512i vtable3 = _mm512_loadu_si512(table + 192);
for (; batch >= 128 * sizeof(uint8_t); batch -= 128 * sizeof(uint8_t)) {
const __m512i vx0 = _mm512_loadu_si512(input);
const __m512i vx1 = _mm512_loadu_si512(input + 64);
input += 128;
__m512i vy0 = _mm512_permutex2var_epi8(vtable0, vx0, vtable1);
const __mmask64 vm0 = _mm512_movepi8_mask(vx0);
__m512i vy1 = _mm512_permutex2var_epi8(vtable0, vx1, vtable1);
const __mmask64 vm1 = _mm512_movepi8_mask(vx1);
const __m512i vt0 = _mm512_permutex2var_epi8(vtable2, vx0, vtable3);
const __m512i vt1 = _mm512_permutex2var_epi8(vtable2, vx1, vtable3);
vy0 = _mm512_mask_mov_epi8(vy0, vm0, vt0);
vy1 = _mm512_mask_mov_epi8(vy1, vm1, vt1);
_mm512_storeu_si512(output, vy0);
_mm512_storeu_si512(output + 64, vy1);
output += 128;
}
for (; batch >= 64 * sizeof(uint8_t); batch -= 64 * sizeof(uint8_t)) {
__m512i vx = _mm512_loadu_si512(input);
input += 64;
__m512i vy = _mm512_permutex2var_epi8(vtable0, vx, vtable1);
const __mmask64 vm = _mm512_movepi8_mask(vx);
const __m512i vt = _mm512_permutex2var_epi8(vtable2, vx, vtable3);
vy = _mm512_mask_mov_epi8(vy, vm, vt);
_mm512_storeu_si512(output, vy);
output += 64;
}
if XNN_UNLIKELY(batch != 0) {
assert(batch < 64);
const __mmask64 vmask = _cvtu64_mask64((uint64_t) ((UINT64_C(1) << batch) - UINT64_C(1)));
__m512i vx = _mm512_maskz_loadu_epi8(vmask, input);
__m512i vy = _mm512_maskz_permutex2var_epi8(vmask, vtable0, vx, vtable1);
const __mmask64 vm = _mm512_movepi8_mask(vx);
const __m512i vt = _mm512_maskz_permutex2var_epi8(vmask, vtable2, vx, vtable3);
vy = _mm512_mask_mov_epi8(vy, vm, vt);
_mm512_mask_storeu_epi8(output, vmask, vy);
}
}
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