text: // Auto-generated file. Do not edit!
  //   Template: src/qs8-igemm/c8-neon-mull.c.in
  //   Generator: tools/xngen
  //
  // 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 <arm_neon.h>
  
  #include <xnnpack/igemm.h>
  #include <xnnpack/math.h>
  
  
  void xnn_qs8_igemm_minmax_rndnu_ukernel_2x8c8__neon_mlal(
      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_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
  {
    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(int8_t) == 0);
    assert(a != NULL);
    assert(w != NULL);
    assert(c != NULL);
  
    kc = round_up_po2(kc, 8 * sizeof(int8_t));
    int8_t* c0 = c;
    int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
    if XNN_UNPREDICTABLE(mr != 2) {
      c1 = c0;
    }
  
    do {
      int32x4_t vacc0x0 = vld1q_lane_s32(w, vmovq_n_s32(0), 0); w = (const void*) ((uintptr_t) w + sizeof(int32_t));
      int32x4_t vacc0x1 = vld1q_lane_s32(w, vmovq_n_s32(0), 0); w = (const void*) ((uintptr_t) w + sizeof(int32_t));
      int32x4_t vacc0x2 = vld1q_lane_s32(w, vmovq_n_s32(0), 0); w = (const void*) ((uintptr_t) w + sizeof(int32_t));
      int32x4_t vacc0x3 = vld1q_lane_s32(w, vmovq_n_s32(0), 0); w = (const void*) ((uintptr_t) w + sizeof(int32_t));
      int32x4_t vacc0x4 = vld1q_lane_s32(w, vmovq_n_s32(0), 0); w = (const void*) ((uintptr_t) w + sizeof(int32_t));
      int32x4_t vacc0x5 = vld1q_lane_s32(w, vmovq_n_s32(0), 0); w = (const void*) ((uintptr_t) w + sizeof(int32_t));
      int32x4_t vacc0x6 = vld1q_lane_s32(w, vmovq_n_s32(0), 0); w = (const void*) ((uintptr_t) w + sizeof(int32_t));
      int32x4_t vacc0x7 = vld1q_lane_s32(w, vmovq_n_s32(0), 0); w = (const void*) ((uintptr_t) w + sizeof(int32_t));
      int32x4_t vacc1x0 = vacc0x0;
      int32x4_t vacc1x1 = vacc0x1;
      int32x4_t vacc1x2 = vacc0x2;
      int32x4_t vacc1x3 = vacc0x3;
      int32x4_t vacc1x4 = vacc0x4;
      int32x4_t vacc1x5 = vacc0x5;
      int32x4_t vacc1x6 = vacc0x6;
      int32x4_t vacc1x7 = vacc0x7;
  
      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);
        }
        const int8_t* restrict a1 = a[1];
        if XNN_UNPREDICTABLE(a1 != zero) {
          a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
        }
        a += 2;
  
        size_t k = kc;
        // 2x partial unrolled loop to load 16 bytes at a time using MLA.
        while (k >= 16 * sizeof(int8_t)) {
          const int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
          const int8x8_t va0x1 = vld1_s8(a0); a0 += 8;
          const int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
          const int8x8_t va1x1 = vld1_s8(a1); a1 += 8;
  
          const int8x8_t vb0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          const int8x8_t vb1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          const int8x8_t vb2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          const int8x8_t vb3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          const int8x8_t vb4x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          const int8x8_t vb5x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          const int8x8_t vb6x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          const int8x8_t vb7x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
  
          const int8x8_t vb0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          int16x8_t vprod0x0 = vmull_s8(vb0x0, va0x0);
          int16x8_t vprod1x0 = vmull_s8(vb0x0, va1x0);
          vprod0x0 = vmlal_s8(vprod0x0, vb0x1, va0x1);
          vprod1x0 = vmlal_s8(vprod1x0, vb0x1, va1x1);
          vacc0x0 = vpadalq_s16(vacc0x0, vprod0x0);
          vacc1x0 = vpadalq_s16(vacc1x0, vprod1x0);
          const int8x8_t vb1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          int16x8_t vprod0x1 = vmull_s8(vb1x0, va0x0);
          int16x8_t vprod1x1 = vmull_s8(vb1x0, va1x0);
          vprod0x1 = vmlal_s8(vprod0x1, vb1x1, va0x1);
          vprod1x1 = vmlal_s8(vprod1x1, vb1x1, va1x1);
          vacc0x1 = vpadalq_s16(vacc0x1, vprod0x1);
          vacc1x1 = vpadalq_s16(vacc1x1, vprod1x1);
          const int8x8_t vb2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          int16x8_t vprod0x2 = vmull_s8(vb2x0, va0x0);
          int16x8_t vprod1x2 = vmull_s8(vb2x0, va1x0);
          vprod0x2 = vmlal_s8(vprod0x2, vb2x1, va0x1);
          vprod1x2 = vmlal_s8(vprod1x2, vb2x1, va1x1);
          vacc0x2 = vpadalq_s16(vacc0x2, vprod0x2);
          vacc1x2 = vpadalq_s16(vacc1x2, vprod1x2);
          const int8x8_t vb3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          int16x8_t vprod0x3 = vmull_s8(vb3x0, va0x0);
          int16x8_t vprod1x3 = vmull_s8(vb3x0, va1x0);
          vprod0x3 = vmlal_s8(vprod0x3, vb3x1, va0x1);
          vprod1x3 = vmlal_s8(vprod1x3, vb3x1, va1x1);
          vacc0x3 = vpadalq_s16(vacc0x3, vprod0x3);
          vacc1x3 = vpadalq_s16(vacc1x3, vprod1x3);
          const int8x8_t vb4x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          int16x8_t vprod0x4 = vmull_s8(vb4x0, va0x0);
          int16x8_t vprod1x4 = vmull_s8(vb4x0, va1x0);
          vprod0x4 = vmlal_s8(vprod0x4, vb4x1, va0x1);
          vprod1x4 = vmlal_s8(vprod1x4, vb4x1, va1x1);
          vacc0x4 = vpadalq_s16(vacc0x4, vprod0x4);
          vacc1x4 = vpadalq_s16(vacc1x4, vprod1x4);
          const int8x8_t vb5x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          int16x8_t vprod0x5 = vmull_s8(vb5x0, va0x0);
          int16x8_t vprod1x5 = vmull_s8(vb5x0, va1x0);
          vprod0x5 = vmlal_s8(vprod0x5, vb5x1, va0x1);
          vprod1x5 = vmlal_s8(vprod1x5, vb5x1, va1x1);
          vacc0x5 = vpadalq_s16(vacc0x5, vprod0x5);
          vacc1x5 = vpadalq_s16(vacc1x5, vprod1x5);
          const int8x8_t vb6x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          int16x8_t vprod0x6 = vmull_s8(vb6x0, va0x0);
          int16x8_t vprod1x6 = vmull_s8(vb6x0, va1x0);
          vprod0x6 = vmlal_s8(vprod0x6, vb6x1, va0x1);
          vprod1x6 = vmlal_s8(vprod1x6, vb6x1, va1x1);
          vacc0x6 = vpadalq_s16(vacc0x6, vprod0x6);
          vacc1x6 = vpadalq_s16(vacc1x6, vprod1x6);
          const int8x8_t vb7x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(  int8_t));
          int16x8_t vprod0x7 = vmull_s8(vb7x0, va0x0);
          int16x8_t vprod1x7 = vmull_s8(vb7x0, va1x0);
          vprod0x7 = vmlal_s8(vprod0x7, vb7x1, va0x1);
          vprod1x7 = vmlal_s8(vprod1x7, vb7x1, va1x1);
          vacc0x7 = vpadalq_s16(vacc0x7, vprod0x7);
          vacc1x7 = vpadalq_s16(vacc1x7, vprod1x7);
  
          k -= 16 * sizeof(int8_t);
        }
  
        // Handle 8 bytes at a time using MUL.
        if (k != 0) {
          const int8x8_t va0 = vld1_s8(a0); a0 += 8;
          const int8x8_t va1 = vld1_s8(a1); a1 += 8;
  
          const int8x8_t vb0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
          const int16x8_t vprod0x0 = vmull_s8(vb0, va0);
          const int16x8_t vprod1x0 = vmull_s8(vb0, va1);
          vacc0x0 = vpadalq_s16(vacc0x0, vprod0x0);
          vacc1x0 = vpadalq_s16(vacc1x0, vprod1x0);
          const int8x8_t vb1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
          const int16x8_t vprod0x1 = vmull_s8(vb1, va0);
          const int16x8_t vprod1x1 = vmull_s8(vb1, va1);
          vacc0x1 = vpadalq_s16(vacc0x1, vprod0x1);
          vacc1x1 = vpadalq_s16(vacc1x1, vprod1x1);
          const int8x8_t vb2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
          const int16x8_t vprod0x2 = vmull_s8(vb2, va0);
          const int16x8_t vprod1x2 = vmull_s8(vb2, va1);
          vacc0x2 = vpadalq_s16(vacc0x2, vprod0x2);
          vacc1x2 = vpadalq_s16(vacc1x2, vprod1x2);
          const int8x8_t vb3 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
          const int16x8_t vprod0x3 = vmull_s8(vb3, va0);
          const int16x8_t vprod1x3 = vmull_s8(vb3, va1);
          vacc0x3 = vpadalq_s16(vacc0x3, vprod0x3);
          vacc1x3 = vpadalq_s16(vacc1x3, vprod1x3);
          const int8x8_t vb4 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
          const int16x8_t vprod0x4 = vmull_s8(vb4, va0);
          const int16x8_t vprod1x4 = vmull_s8(vb4, va1);
          vacc0x4 = vpadalq_s16(vacc0x4, vprod0x4);
          vacc1x4 = vpadalq_s16(vacc1x4, vprod1x4);
          const int8x8_t vb5 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
          const int16x8_t vprod0x5 = vmull_s8(vb5, va0);
          const int16x8_t vprod1x5 = vmull_s8(vb5, va1);
          vacc0x5 = vpadalq_s16(vacc0x5, vprod0x5);
          vacc1x5 = vpadalq_s16(vacc1x5, vprod1x5);
          const int8x8_t vb6 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
          const int16x8_t vprod0x6 = vmull_s8(vb6, va0);
          const int16x8_t vprod1x6 = vmull_s8(vb6, va1);
          vacc0x6 = vpadalq_s16(vacc0x6, vprod0x6);
          vacc1x6 = vpadalq_s16(vacc1x6, vprod1x6);
          const int8x8_t vb7 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
          const int16x8_t vprod0x7 = vmull_s8(vb7, va0);
          const int16x8_t vprod1x7 = vmull_s8(vb7, va1);
          vacc0x7 = vpadalq_s16(vacc0x7, vprod0x7);
          vacc1x7 = vpadalq_s16(vacc1x7, vprod1x7);
  
          k -= 8 * sizeof(int8_t);
        }
  
        p -= 2 * sizeof(void*);
      } while (p != 0);
  
  #if XNN_ARCH_ARM64
      const int32x4_t vsum0x01 = vpaddq_s32(vacc0x0, vacc0x1);
      const int32x4_t vsum0x23 = vpaddq_s32(vacc0x2, vacc0x3);
      const int32x4_t vsum0x45 = vpaddq_s32(vacc0x4, vacc0x5);
      const int32x4_t vsum0x67 = vpaddq_s32(vacc0x6, vacc0x7);
      const int32x4_t vsum1x01 = vpaddq_s32(vacc1x0, vacc1x1);
      const int32x4_t vsum1x23 = vpaddq_s32(vacc1x2, vacc1x3);
      const int32x4_t vsum1x45 = vpaddq_s32(vacc1x4, vacc1x5);
      const int32x4_t vsum1x67 = vpaddq_s32(vacc1x6, vacc1x7);
  
      int32x4_t vacc0x0123 = vpaddq_s32(vsum0x01, vsum0x23);
      int32x4_t vacc0x4567 = vpaddq_s32(vsum0x45, vsum0x67);
      int32x4_t vacc1x0123 = vpaddq_s32(vsum1x01, vsum1x23);
      int32x4_t vacc1x4567 = vpaddq_s32(vsum1x45, vsum1x67);
  #else
      const int32x2_t vpsum0x0 = vadd_s32(vget_low_s32(vacc0x0), vget_high_s32(vacc0x0));
      const int32x2_t vpsum0x1 = vadd_s32(vget_low_s32(vacc0x1), vget_high_s32(vacc0x1));
      const int32x2_t vpsum0x2 = vadd_s32(vget_low_s32(vacc0x2), vget_high_s32(vacc0x2));
      const int32x2_t vpsum0x3 = vadd_s32(vget_low_s32(vacc0x3), vget_high_s32(vacc0x3));
      const int32x2_t vsum0x01 = vpadd_s32(vpsum0x0, vpsum0x1);
      const int32x2_t vsum0x23 = vpadd_s32(vpsum0x2, vpsum0x3);
      int32x4_t vacc0x0123 = vcombine_s32(vsum0x01, vsum0x23 );
      const int32x2_t vpsum0x4 = vadd_s32(vget_low_s32(vacc0x4), vget_high_s32(vacc0x4));
      const int32x2_t vpsum0x5 = vadd_s32(vget_low_s32(vacc0x5), vget_high_s32(vacc0x5));
      const int32x2_t vpsum0x6 = vadd_s32(vget_low_s32(vacc0x6), vget_high_s32(vacc0x6));
      const int32x2_t vpsum0x7 = vadd_s32(vget_low_s32(vacc0x7), vget_high_s32(vacc0x7));
      const int32x2_t vsum0x45 = vpadd_s32(vpsum0x4, vpsum0x5);
      const int32x2_t vsum0x67 = vpadd_s32(vpsum0x6, vpsum0x7);
      int32x4_t vacc0x4567 = vcombine_s32(vsum0x45, vsum0x67 );
      const int32x2_t vpsum1x0 = vadd_s32(vget_low_s32(vacc1x0), vget_high_s32(vacc1x0));
      const int32x2_t vpsum1x1 = vadd_s32(vget_low_s32(vacc1x1), vget_high_s32(vacc1x1));
      const int32x2_t vpsum1x2 = vadd_s32(vget_low_s32(vacc1x2), vget_high_s32(vacc1x2));
      const int32x2_t vpsum1x3 = vadd_s32(vget_low_s32(vacc1x3), vget_high_s32(vacc1x3));
      const int32x2_t vsum1x01 = vpadd_s32(vpsum1x0, vpsum1x1);
      const int32x2_t vsum1x23 = vpadd_s32(vpsum1x2, vpsum1x3);
      int32x4_t vacc1x0123 = vcombine_s32(vsum1x01, vsum1x23 );
      const int32x2_t vpsum1x4 = vadd_s32(vget_low_s32(vacc1x4), vget_high_s32(vacc1x4));
      const int32x2_t vpsum1x5 = vadd_s32(vget_low_s32(vacc1x5), vget_high_s32(vacc1x5));
      const int32x2_t vpsum1x6 = vadd_s32(vget_low_s32(vacc1x6), vget_high_s32(vacc1x6));
      const int32x2_t vpsum1x7 = vadd_s32(vget_low_s32(vacc1x7), vget_high_s32(vacc1x7));
      const int32x2_t vsum1x45 = vpadd_s32(vpsum1x4, vpsum1x5);
      const int32x2_t vsum1x67 = vpadd_s32(vpsum1x6, vpsum1x7);
      int32x4_t vacc1x4567 = vcombine_s32(vsum1x45, vsum1x67 );
  #endif
  
      const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
      const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
      const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
  
      vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
      vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
      vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
      vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
  
      vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
      vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
      vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
      vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
  
      vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
      vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
      vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
      vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
  
      const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
  #if XNN_ARCH_ARM64
      const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
      const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
  
      int8x16_t vout0x01234567_1x01234567 = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc1x01234567);
  #else
      const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
      const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
  
      int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc1x01234567));
  #endif
      const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
      const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
  
      vout0x01234567_1x01234567 = vmaxq_s8(vout0x01234567_1x01234567, voutput_min);
  
      vout0x01234567_1x01234567 = vminq_s8(vout0x01234567_1x01234567, voutput_max);
  
      if (nc >= 8) {
        vst1_s8(c1 + 0, vget_high_s8(vout0x01234567_1x01234567));
        vst1_s8(c0 + 0, vget_low_s8(vout0x01234567_1x01234567));
  
        c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
        c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
  
        a = (const int8_t**restrict) ((uintptr_t) a - ks);
  
        nc -= 8;
      } else {
        if (nc & 4) {
          vst1q_lane_u32((void*) c1, vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
          vst1q_lane_u32((void*) c0, vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
          vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
        }
        if (nc & 2) {
          vst1q_lane_u16((void*) c1, vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
          vst1q_lane_u16((void*) c0, vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
          vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
        }
        if (nc & 1) {
          vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
          vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
        }
  
        nc = 0;
      }
    } while (nc != 0);
  }
  