text: // Auto-generated file. Do not edit!
  //   Template: src/qs8-igemm/MRx4c8-sse.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 <smmintrin.h>
  
  #include <xnnpack/igemm.h>
  #include <xnnpack/math.h>
  
  
  void xnn_qs8_igemm_minmax_ukernel_1x4c8__avx_ld64(
      size_t mr,
      size_t nc,
      size_t kc,
      size_t ks,
      const int8_t** restrict a,
      const void* restrict w,
      int8_t* restrict c,
      size_t cm_stride,
      size_t cn_stride,
      size_t a_offset,
      const int8_t* zero,
      const union xnn_qs8_gemm_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN
  {
    assert(mr != 0);
    assert(mr <= 1);
    assert(nc != 0);
    assert(kc != 0);
    assert(ks != 0);
    assert(ks % (1 * sizeof(void*)) == 0);
    assert(a_offset % sizeof(int8_t) == 0);
    assert(a != NULL);
    assert(w != NULL);
    assert(c != NULL);
  
    kc = round_up_po2(kc, 8);
    int8_t* c0 = c;
  
    do {
      __m128i vacc0x0 = _mm_cvtsi32_si128((int) ((const int32_t*) w)[0]);
      __m128i vacc0x1 = _mm_cvtsi32_si128((int) ((const int32_t*) w)[1]);
      __m128i vacc0x2 = _mm_cvtsi32_si128((int) ((const int32_t*) w)[2]);
      __m128i vacc0x3 = _mm_cvtsi32_si128((int) ((const int32_t*) w)[3]);
      w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
  
      size_t p = ks;
      do {
        const int8_t* restrict a0 = a[0];
        if XNN_UNPREDICTABLE(a0 != zero) {
          a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
        }
        a += 1;
  
        size_t k = 0;
        while (k < kc) {
          const __m128i va0 = _mm_loadl_epi64((const __m128i*) a0);
          const __m128i vxa0 = _mm_cvtepi8_epi16(va0);
          a0 += 8;
  
          const __m128i vb0 = _mm_loadl_epi64((const __m128i*) w);
          const __m128i vxb0 = _mm_cvtepi8_epi16(vb0);
  
          vacc0x0 = _mm_add_epi32(vacc0x0, _mm_madd_epi16(vxa0, vxb0));
          const __m128i vb1 = _mm_loadl_epi64((const __m128i*) ((uintptr_t) w + 8));
          const __m128i vxb1 = _mm_cvtepi8_epi16(vb1);
  
          vacc0x1 = _mm_add_epi32(vacc0x1, _mm_madd_epi16(vxa0, vxb1));
          const __m128i vb2 = _mm_loadl_epi64((const __m128i*) ((uintptr_t) w + 16));
          const __m128i vxb2 = _mm_cvtepi8_epi16(vb2);
  
          vacc0x2 = _mm_add_epi32(vacc0x2, _mm_madd_epi16(vxa0, vxb2));
          const __m128i vb3 = _mm_loadl_epi64((const __m128i*) ((uintptr_t) w + 24));
          const __m128i vxb3 = _mm_cvtepi8_epi16(vb3);
  
          vacc0x3 = _mm_add_epi32(vacc0x3, _mm_madd_epi16(vxa0, vxb3));
  
          w = (const void*) ((uintptr_t) w + 32);
          k += 8 * sizeof(int8_t);
        }
        p -= 1 * sizeof(void*);
      } while (p != 0);
  
      const __m128i vacc0x01 = _mm_hadd_epi32(vacc0x0, vacc0x1);
      const __m128i vacc0x23 = _mm_hadd_epi32(vacc0x2, vacc0x3);
  
      __m128i vacc0x0123 = _mm_hadd_epi32(vacc0x01, vacc0x23);
  
      const __m128i vmultiplier = _mm_load_si128((const __m128i*) params->sse2.multiplier);
      const __m128i vrounding = _mm_load_si128((const __m128i*) params->sse2.rounding);
  
      const __m128i vacc0x1133 = _mm_shuffle_epi32(vacc0x0123, _MM_SHUFFLE(3, 3, 1, 1));
  
      const __m128i vprod0x02 = _mm_add_epi64(_mm_mul_epi32(vacc0x0123, vmultiplier), vrounding);
  
      const __m128i vprod0x13 = _mm_add_epi64(_mm_mul_epi32(vacc0x1133, vmultiplier), vrounding);
  
      const __m128i vq31prod0x02 = _mm_srli_epi64(vprod0x02, 31);
      const __m128i vq31prod0x13 = _mm_add_epi64(vprod0x13, vprod0x13);
  
      const __m128i vq31prod0x0123 = _mm_blend_epi16(vq31prod0x02, vq31prod0x13, 0xCC);
  
      const __m128i vremainder_mask = _mm_load_si128((const __m128i*) params->sse2.remainder_mask);
      const __m128i vrem0x0123 =
        _mm_add_epi32(_mm_and_si128(vq31prod0x0123, vremainder_mask), _mm_cmpgt_epi32(_mm_setzero_si128(), vq31prod0x0123));
  
      const __m128i vremainder_threshold = _mm_load_si128((const __m128i*) params->sse2.remainder_threshold);
      const __m128i vshift = _mm_load_si128((const __m128i*) params->sse2.shift);
      vacc0x0123 =
        _mm_sub_epi32(_mm_sra_epi32(vq31prod0x0123, vshift), _mm_cmpgt_epi32(vrem0x0123, vremainder_threshold));
  
      const __m128i voutput_zero_point = _mm_load_si128((const __m128i*) params->sse2.output_zero_point);
      __m128i vacc00x0123 = _mm_adds_epi16(_mm_packs_epi32(vacc0x0123, vacc0x0123), voutput_zero_point);
  
      const __m128i voutput_min = _mm_load_si128((const __m128i*) params->sse2.output_min);
      const __m128i voutput_max = _mm_load_si128((const __m128i*) params->sse2.output_max);
      vacc00x0123 = _mm_min_epi16(_mm_max_epi16(vacc00x0123, voutput_min), voutput_max);
  
      __m128i vout = _mm_packs_epi16(vacc00x0123, vacc00x0123);
  
      if (nc >= 4) {
        *((uint32_t*) c0) = (uint32_t) _mm_cvtsi128_si32(vout);
        c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
  
        a = (const int8_t**restrict) ((uintptr_t) a - ks);
  
        nc -= 4;
      } else {
        if (nc & 2) {
          *((uint16_t*) c0) = (uint16_t) _mm_extract_epi16(vout, 0);
          c0 += 2;
          vout = _mm_srli_epi32(vout, 16);
        }
        if (nc & 1) {
          *((int8_t*) c0) = (int8_t) _mm_extract_epi8(vout, 0);
        }
  
        nc = 0;
      }
    } while (nc != 0);
  }
  