text: // Auto-generated file. Do not edit!
  //   Template: src/qs8-igemm/MRx8c8-avx2.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 <immintrin.h>
  
  #include <xnnpack/igemm.h>
  #include <xnnpack/intrinsics-polyfill.h>
  #include <xnnpack/math.h>
  #include <xnnpack/unaligned.h>
  
  
  void xnn_qu8_igemm_minmax_fp32_ukernel_2x8c8__avx2(
      size_t mr,
      size_t nc,
      size_t kc,
      size_t ks,
      const uint8_t** restrict a,
      const void* restrict w,
      uint8_t* restrict c,
      size_t cm_stride,
      size_t cn_stride,
      size_t a_offset,
      const uint8_t* zero,
      const union xnn_qu8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
  {
    assert(mr != 0);
    assert(mr <= 2);
    assert(nc != 0);
    assert(kc != 0);
    assert(ks != 0);
    assert(ks % (2 * sizeof(void*)) == 0);
    assert(a_offset % sizeof(uint8_t) == 0);
    assert(a != NULL);
    assert(w != NULL);
    assert(c != NULL);
  
    kc = round_up_po2(kc, 8);
    uint8_t* c0 = c;
    uint8_t* c1 = (uint8_t*) ((uintptr_t) c0 + cm_stride);
    if XNN_UNPREDICTABLE(mr != 2) {
      c1 = c0;
    }
  
    do {
      const __m128i vbias0x0 = _mm_cvtsi32_si128(((const int*) w)[0]);
      const __m128i vbias0x1 = _mm_cvtsi32_si128(((const int*) w)[1]);
      __m256i vacc0x01 = _mm256_inserti128_si256(_mm256_castsi128_si256(vbias0x0), vbias0x1, 1);
      const __m128i vbias0x2 = _mm_cvtsi32_si128(((const int*) w)[2]);
      const __m128i vbias0x3 = _mm_cvtsi32_si128(((const int*) w)[3]);
      __m256i vacc0x23 = _mm256_inserti128_si256(_mm256_castsi128_si256(vbias0x2), vbias0x3, 1);
      const __m128i vbias0x4 = _mm_cvtsi32_si128(((const int*) w)[4]);
      const __m128i vbias0x5 = _mm_cvtsi32_si128(((const int*) w)[5]);
      __m256i vacc0x45 = _mm256_inserti128_si256(_mm256_castsi128_si256(vbias0x4), vbias0x5, 1);
      const __m128i vbias0x6 = _mm_cvtsi32_si128(((const int*) w)[6]);
      const __m128i vbias0x7 = _mm_cvtsi32_si128(((const int*) w)[7]);
      __m256i vacc0x67 = _mm256_inserti128_si256(_mm256_castsi128_si256(vbias0x6), vbias0x7, 1);
      __m256i vacc1x01 = vacc0x01;
      __m256i vacc1x23 = vacc0x23;
      __m256i vacc1x45 = vacc0x45;
      __m256i vacc1x67 = vacc0x67;
      w = (const int32_t*) w + 8;
  
      size_t p = ks;
      const __m256i vb_zero_point = _mm256_load_si256((const __m256i*) params->fp32_avx2.kernel_zero_point);
      do {
        const uint8_t* restrict a0 = a[0];
        if XNN_UNPREDICTABLE(a0 != zero) {
          a0 = (const uint8_t*) ((uintptr_t) a0 + a_offset);
        }
        const uint8_t* restrict a1 = a[1];
        if XNN_UNPREDICTABLE(a1 != zero) {
          a1 = (const uint8_t*) ((uintptr_t) a1 + a_offset);
        }
        a += 2;
  
        size_t k = 0;
        while (k < kc) {
          const __m128i va0 = _mm_broadcastq_epi64(_mm_loadl_epi64((const __m128i*) a0));
          const __m256i vxa0 = _mm256_cvtepu8_epi16(va0);
          a0 += 8;
          const __m128i va1 = _mm_broadcastq_epi64(_mm_loadl_epi64((const __m128i*) a1));
          const __m256i vxa1 = _mm256_cvtepu8_epi16(va1);
          a1 += 8;
  
          const __m128i vb01 = _mm_load_si128((const __m128i*) w);
          const __m256i vxb01 = _mm256_sub_epi16(_mm256_cvtepu8_epi16(vb01), vb_zero_point);
  
          vacc0x01 = _mm256_add_epi32(vacc0x01, _mm256_madd_epi16(vxa0, vxb01));
          vacc1x01 = _mm256_add_epi32(vacc1x01, _mm256_madd_epi16(vxa1, vxb01));
          const __m128i vb23 = _mm_load_si128((const __m128i*) ((const uint8_t*) w + 16));
          const __m256i vxb23 = _mm256_sub_epi16(_mm256_cvtepu8_epi16(vb23), vb_zero_point);
  
          vacc0x23 = _mm256_add_epi32(vacc0x23, _mm256_madd_epi16(vxa0, vxb23));
          vacc1x23 = _mm256_add_epi32(vacc1x23, _mm256_madd_epi16(vxa1, vxb23));
          const __m128i vb45 = _mm_load_si128((const __m128i*) ((const uint8_t*) w + 32));
          const __m256i vxb45 = _mm256_sub_epi16(_mm256_cvtepu8_epi16(vb45), vb_zero_point);
  
          vacc0x45 = _mm256_add_epi32(vacc0x45, _mm256_madd_epi16(vxa0, vxb45));
          vacc1x45 = _mm256_add_epi32(vacc1x45, _mm256_madd_epi16(vxa1, vxb45));
          const __m128i vb67 = _mm_load_si128((const __m128i*) ((const uint8_t*) w + 48));
          const __m256i vxb67 = _mm256_sub_epi16(_mm256_cvtepu8_epi16(vb67), vb_zero_point);
  
          vacc0x67 = _mm256_add_epi32(vacc0x67, _mm256_madd_epi16(vxa0, vxb67));
          vacc1x67 = _mm256_add_epi32(vacc1x67, _mm256_madd_epi16(vxa1, vxb67));
  
          w = (const void*) ((const uint8_t*) w + 64);
          k += 8 * sizeof(uint8_t);
        }
        p -= 2 * sizeof(void*);
      } while (p != 0);
  
      const __m256i vacc0x0213 = _mm256_hadd_epi32(vacc0x01, vacc0x23);
      const __m256i vacc0x4657 = _mm256_hadd_epi32(vacc0x45, vacc0x67);
      const __m256i vacc1x0213 = _mm256_hadd_epi32(vacc1x01, vacc1x23);
      const __m256i vacc1x4657 = _mm256_hadd_epi32(vacc1x45, vacc1x67);
  
      const __m256i vacc0x02461357 = _mm256_hadd_epi32(vacc0x0213, vacc0x4657);
      const __m256i vacc1x02461357 = _mm256_hadd_epi32(vacc1x0213, vacc1x4657);
  
      const __m256i vpermute_mask = _mm256_set_epi32(7, 3, 6, 2, 5, 1, 4, 0);
      __m256i vacc0x01234567 = _mm256_permutevar8x32_epi32(vacc0x02461357, vpermute_mask);
      __m256i vacc1x01234567 = _mm256_permutevar8x32_epi32(vacc1x02461357, vpermute_mask);
  
      __m256 vscaled0x01234567 = _mm256_cvtepi32_ps(vacc0x01234567);
      __m256 vscaled1x01234567 = _mm256_cvtepi32_ps(vacc1x01234567);
  
      const __m256 vscale = _mm256_load_ps(params->fp32_avx2.scale);
      vscaled0x01234567 = _mm256_mul_ps(vscaled0x01234567, vscale);
      vscaled1x01234567 = _mm256_mul_ps(vscaled1x01234567, vscale);
  
      const __m256 voutput_max_less_zero_point = _mm256_load_ps(params->fp32_avx2.output_max_less_zero_point);
      vscaled0x01234567 = _mm256_min_ps(vscaled0x01234567, voutput_max_less_zero_point);
      vscaled1x01234567 = _mm256_min_ps(vscaled1x01234567, voutput_max_less_zero_point);
  
      vacc0x01234567 = _mm256_cvtps_epi32(vscaled0x01234567);
      vacc1x01234567 = _mm256_cvtps_epi32(vscaled1x01234567);
  
      const __m256i voutput_zero_point = _mm256_load_si256((const __m256i*) params->fp32_avx2.output_zero_point);
      __m256i vacc01x01234567 = _mm256_adds_epi16(_mm256_packs_epi32(vacc0x01234567, vacc1x01234567), voutput_zero_point);
  
      vacc01x01234567 = _mm256_permute4x64_epi64(vacc01x01234567, _MM_SHUFFLE(3, 1, 2, 0));
  
      __m256i vout = _mm256_packus_epi16(vacc01x01234567, vacc01x01234567);
  
      vout = _mm256_max_epu8(vout, _mm256_load_si256((const __m256i*) params->fp32_avx2.output_min));
  
      __m128i vout_lo = _mm256_castsi256_si128(vout);
      __m128i vout_hi = _mm256_extracti128_si256(vout, 1);
  
      if (nc >= 8) {
        _mm_storel_epi64((__m128i*) c1, vout_hi);
        _mm_storel_epi64((__m128i*) c0, vout_lo);
  
        c1 = (uint8_t*) ((uintptr_t) c1 + cn_stride);
        c0 = (uint8_t*) ((uintptr_t) c0 + cn_stride);
  
        a = (const uint8_t**restrict) ((uintptr_t) a - ks);
  
        nc -= 8;
      } else {
        if (nc & 4) {
          _mm_storeu_si32(c1, vout_hi);
          _mm_storeu_si32(c0, vout_lo);
  
          c1 += 4;
          c0 += 4;
  
          vout_lo = _mm_srli_epi64(vout_lo, 32);
          vout_hi = _mm_srli_epi64(vout_hi, 32);
        }
        if (nc & 2) {
          unaligned_store_u16(c1, (uint16_t) _mm_extract_epi16(vout_hi, 0));
          unaligned_store_u16(c0, (uint16_t) _mm_extract_epi16(vout_lo, 0));
  
          c1 += 2;
          c0 += 2;
  
          vout_lo = _mm_srli_epi32(vout_lo, 16);
          vout_hi = _mm_srli_epi32(vout_hi, 16);
        }
        if (nc & 1) {
          *c1 = (uint8_t) _mm_extract_epi8(vout_hi, 0);
          *c0 = (uint8_t) _mm_extract_epi8(vout_lo, 0);
        }
  
        nc = 0;
      }
    } while (nc != 0);
  }
  