// Auto-generated file. Do not edit!
//   Template: src/qs8-vadd/sse-mul16-ld64.c.in
//   Generator: tools/xngen
//
// Copyright 2020 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 <emmintrin.h>

#include "xnnpack/unaligned.h"
#include "xnnpack/vbinary.h"


void xnn_qs8_vadd_minmax_ukernel__sse2_mul16_ld64_u8(
    size_t batch,
    const int8_t* input_a,
    const int8_t* input_b,
    int8_t* output,
    const struct xnn_qs8_add_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
{
  assert(batch != 0);
  assert(batch % sizeof(int8_t) == 0);
  assert(input_a != NULL);
  assert(input_b != NULL);
  assert(output != NULL);

  const __m128i vbias = _mm_set1_epi32(params->scalar.bias);
  const __m128i va_multiplier_lo = _mm_set1_epi16(params->scalar.a_multiplier);
  const __m128i va_multiplier_hi = _mm_set1_epi16((uint32_t)params->scalar.a_multiplier >> 16);
  const __m128i vb_multiplier_lo = _mm_set1_epi16(params->scalar.b_multiplier);
  const __m128i vb_multiplier_hi = _mm_set1_epi16((uint32_t)params->scalar.b_multiplier >> 16);
  const __m128i vshift = _mm_cvtsi32_si128((int) params->scalar.shift);
  const __m128i voutput_zero_point = _mm_set1_epi16(params->scalar.output_zero_point);
  const __m128i voutput_min = _mm_set1_epi16(params->scalar.output_min);
  const __m128i voutput_max = _mm_set1_epi16(params->scalar.output_max);

  XNN_FORCE_REALIZATION(vbias);
  XNN_FORCE_REALIZATION(va_multiplier_lo);
  XNN_FORCE_REALIZATION(va_multiplier_hi);
  XNN_FORCE_REALIZATION(vb_multiplier_lo);
  XNN_FORCE_REALIZATION(vb_multiplier_hi);
  XNN_FORCE_REALIZATION(vshift);
  XNN_FORCE_REALIZATION(voutput_zero_point);
  XNN_FORCE_REALIZATION(voutput_min);
  XNN_FORCE_REALIZATION(voutput_max);

  for (; batch >= 8 * sizeof(int8_t); batch -= 8 * sizeof(int8_t)) {
    __m128i va01234567 = _mm_loadl_epi64((const __m128i*) input_a);
    __m128i vb01234567 = _mm_loadl_epi64((const __m128i*) input_b);
    input_a += 8;
    input_b += 8;

    va01234567 = _mm_srai_epi16(_mm_unpacklo_epi8(va01234567, va01234567), 8);
    vb01234567 = _mm_srai_epi16(_mm_unpacklo_epi8(vb01234567, vb01234567), 8);

    __m128i vaprod01234567hi = _mm_mulhi_epu16(va01234567, va_multiplier_lo);
    __m128i vbprod01234567hi = _mm_mulhi_epu16(vb01234567, vb_multiplier_lo);
    const __m128i vaprod01234567lo = _mm_mullo_epi16(va01234567, va_multiplier_lo);
    const __m128i vbprod01234567lo = _mm_mullo_epi16(vb01234567, vb_multiplier_lo);

    vaprod01234567hi = _mm_add_epi16(vaprod01234567hi, _mm_mullo_epi16(va01234567, va_multiplier_hi));
    vbprod01234567hi = _mm_add_epi16(vbprod01234567hi, _mm_mullo_epi16(vb01234567, vb_multiplier_hi));

    vaprod01234567hi = _mm_sub_epi16(vaprod01234567hi, _mm_and_si128(_mm_srai_epi16(va01234567, 15), va_multiplier_lo));
    vbprod01234567hi = _mm_sub_epi16(vbprod01234567hi, _mm_and_si128(_mm_srai_epi16(vb01234567, 15), vb_multiplier_lo));

    __m128i vacc0123 = _mm_add_epi32(vbias, _mm_unpacklo_epi16(vaprod01234567lo, vaprod01234567hi));
    __m128i vacc4567 = _mm_add_epi32(vbias, _mm_unpackhi_epi16(vaprod01234567lo, vaprod01234567hi));

    vacc0123 = _mm_add_epi32(vacc0123, _mm_unpacklo_epi16(vbprod01234567lo, vbprod01234567hi));
    vacc4567 = _mm_add_epi32(vacc4567, _mm_unpackhi_epi16(vbprod01234567lo, vbprod01234567hi));

    vacc0123 = _mm_sra_epi32(vacc0123, vshift);
    vacc4567 = _mm_sra_epi32(vacc4567, vshift);

    __m128i vout01234567 = _mm_adds_epi16(_mm_packs_epi32(vacc0123, vacc4567), voutput_zero_point);

    vout01234567 = _mm_max_epi16(vout01234567, voutput_min);

    vout01234567 = _mm_min_epi16(vout01234567, voutput_max);

    __m128i vout0123456701234567 = _mm_packs_epi16(vout01234567, vout01234567);


    _mm_storel_epi64((__m128i*) output, vout0123456701234567);
    output += 8;
  }
  if XNN_UNLIKELY(batch != 0) {
    {
      __m128i va01234567 = _mm_loadl_epi64((const __m128i*) input_a);
      __m128i vb01234567 = _mm_loadl_epi64((const __m128i*) input_b);

      va01234567 = _mm_srai_epi16(_mm_unpacklo_epi8(va01234567, va01234567), 8);
      vb01234567 = _mm_srai_epi16(_mm_unpacklo_epi8(vb01234567, vb01234567), 8);

      __m128i vaprod01234567hi = _mm_mulhi_epu16(va01234567, va_multiplier_lo);
      __m128i vbprod01234567hi = _mm_mulhi_epu16(vb01234567, vb_multiplier_lo);
      const __m128i vaprod01234567lo = _mm_mullo_epi16(va01234567, va_multiplier_lo);
      const __m128i vbprod01234567lo = _mm_mullo_epi16(vb01234567, vb_multiplier_lo);

      vaprod01234567hi = _mm_add_epi16(vaprod01234567hi, _mm_mullo_epi16(va01234567, va_multiplier_hi));
      vbprod01234567hi = _mm_add_epi16(vbprod01234567hi, _mm_mullo_epi16(vb01234567, vb_multiplier_hi));

      vaprod01234567hi = _mm_sub_epi16(vaprod01234567hi, _mm_and_si128(_mm_srai_epi16(va01234567, 15), va_multiplier_lo));
      vbprod01234567hi = _mm_sub_epi16(vbprod01234567hi, _mm_and_si128(_mm_srai_epi16(vb01234567, 15), vb_multiplier_lo));

      __m128i vacc0123 = _mm_add_epi32(vbias, _mm_unpacklo_epi16(vaprod01234567lo, vaprod01234567hi));
      __m128i vacc4567 = _mm_add_epi32(vbias, _mm_unpackhi_epi16(vaprod01234567lo, vaprod01234567hi));

      vacc0123 = _mm_add_epi32(vacc0123, _mm_unpacklo_epi16(vbprod01234567lo, vbprod01234567hi));
      vacc4567 = _mm_add_epi32(vacc4567, _mm_unpackhi_epi16(vbprod01234567lo, vbprod01234567hi));

      vacc0123 = _mm_sra_epi32(vacc0123, vshift);
      vacc4567 = _mm_sra_epi32(vacc4567, vshift);

      __m128i vout01234567 = _mm_adds_epi16(_mm_packs_epi32(vacc0123, vacc4567), voutput_zero_point);
      vout01234567 = _mm_max_epi16(vout01234567, voutput_min);
      vout01234567 = _mm_min_epi16(vout01234567, voutput_max);

      __m128i vout0123456701234567 = _mm_packs_epi16(vout01234567, vout01234567);

      if (batch & (4 * sizeof(int8_t))) {
        unaligned_store_u32(output, (uint32_t) _mm_cvtsi128_si32(vout0123456701234567));
        vout0123456701234567 = _mm_srli_epi64(vout0123456701234567, 32);
        output += 4;
      }
      if (batch & (2 * sizeof(int8_t))) {
        unaligned_store_u16(output, (uint16_t) _mm_cvtsi128_si32(vout0123456701234567));
        vout0123456701234567 = _mm_srli_epi32(vout0123456701234567, 16);
        output += 2;
      }
      if (batch & (1 * sizeof(int8_t))) {
        *output = (int8_t) _mm_cvtsi128_si32(vout0123456701234567);
      }
    }
  }
}
