text: // Auto-generated file. Do not edit!
  //   Template: src/qs8-gemm/c8-neon-mull-padal.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/common.h>
  #include <xnnpack/gemm.h>
  
  
  void xnn_qs8_gemm_minmax_ukernel_1x8c8__neon_mull_padal(
      size_t mr,
      size_t nc,
      size_t kc,
      const int8_t* restrict a,
      size_t a_stride,
      const void* restrict w,
      int8_t* restrict c,
      size_t cm_stride,
      size_t cn_stride,
      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(kc % sizeof(int8_t) == 0);
    assert(a != NULL);
    assert(w != NULL);
    assert(c != NULL);
  
    const int8_t* a0 = a;
    int8_t* c0 = c;
  
    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));
  
      ptrdiff_t k = (ptrdiff_t) kc;
      // 2x partial unrolled loop to load 16 bytes at a time.
      while (k > 8) {
        const int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
        const int8x8_t va0x1 = vld1_s8(a0); a0 += 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);
        vprod0x0 = vmlal_s8(vprod0x0, vb0x1, va0x1);
        vacc0x0 = vpadalq_s16(vacc0x0, vprod0x0);
        const int8x8_t vb1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
        int16x8_t vprod0x1 = vmull_s8(vb1x0, va0x0);
        vprod0x1 = vmlal_s8(vprod0x1, vb1x1, va0x1);
        vacc0x1 = vpadalq_s16(vacc0x1, vprod0x1);
        const int8x8_t vb2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
        int16x8_t vprod0x2 = vmull_s8(vb2x0, va0x0);
        vprod0x2 = vmlal_s8(vprod0x2, vb2x1, va0x1);
        vacc0x2 = vpadalq_s16(vacc0x2, vprod0x2);
        const int8x8_t vb3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
        int16x8_t vprod0x3 = vmull_s8(vb3x0, va0x0);
        vprod0x3 = vmlal_s8(vprod0x3, vb3x1, va0x1);
        vacc0x3 = vpadalq_s16(vacc0x3, vprod0x3);
        const int8x8_t vb4x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
        int16x8_t vprod0x4 = vmull_s8(vb4x0, va0x0);
        vprod0x4 = vmlal_s8(vprod0x4, vb4x1, va0x1);
        vacc0x4 = vpadalq_s16(vacc0x4, vprod0x4);
        const int8x8_t vb5x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
        int16x8_t vprod0x5 = vmull_s8(vb5x0, va0x0);
        vprod0x5 = vmlal_s8(vprod0x5, vb5x1, va0x1);
        vacc0x5 = vpadalq_s16(vacc0x5, vprod0x5);
        const int8x8_t vb6x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
        int16x8_t vprod0x6 = vmull_s8(vb6x0, va0x0);
        vprod0x6 = vmlal_s8(vprod0x6, vb6x1, va0x1);
        vacc0x6 = vpadalq_s16(vacc0x6, vprod0x6);
        const int8x8_t vb7x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
        int16x8_t vprod0x7 = vmull_s8(vb7x0, va0x0);
        vprod0x7 = vmlal_s8(vprod0x7, vb7x1, va0x1);
        vacc0x7 = vpadalq_s16(vacc0x7, vprod0x7);
  
        k -= 16 * sizeof(int8_t);
      }
      // Handle up to 8 final positions of `k`
      // If kc was 0 or 16, there is no remainder.  k is 0.
      // If kc was 1 to 8,  there is a remainder of k.
      // If kc was 9 to 15, the main loop handled the remainder; k underflowed.
      if XNN_UNLIKELY(k > 0) {
        const int8x8_t va0 = vld1_s8(a0); a0 += 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);
        vacc0x0 = vpadalq_s16(vacc0x0, vprod0x0);
        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);
        vacc0x1 = vpadalq_s16(vacc0x1, vprod0x1);
        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);
        vacc0x2 = vpadalq_s16(vacc0x2, vprod0x2);
        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);
        vacc0x3 = vpadalq_s16(vacc0x3, vprod0x3);
        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);
        vacc0x4 = vpadalq_s16(vacc0x4, vprod0x4);
        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);
        vacc0x5 = vpadalq_s16(vacc0x5, vprod0x5);
        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);
        vacc0x6 = vpadalq_s16(vacc0x6, vprod0x6);
        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);
        vacc0x7 = vpadalq_s16(vacc0x7, vprod0x7);
  
        k -= 8 * sizeof(int8_t);
      }
  
  #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);
      int32x4_t vacc0x0123 = vpaddq_s32(vsum0x01, vsum0x23);
      int32x4_t vacc0x4567 = vpaddq_s32(vsum0x45, vsum0x67);
  #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 );
  #endif
  
      const int32x4_t vmultiplier = vld1q_dup_s32(&params->neon.multiplier);
      vacc0x0123 = vqrdmulhq_s32(vacc0x0123, vmultiplier);
      vacc0x4567 = vqrdmulhq_s32(vacc0x4567, vmultiplier);
  
      const int32x4_t vright_shift = vld1q_dup_s32(&params->neon.right_shift);
      const int32x4_t vzero_shift_mask = vreinterpretq_s32_u32(vceqq_s32(vright_shift, vmovq_n_s32(0)));
      vacc0x0123 = vsraq_n_s32(vacc0x0123, vbicq_s32(vacc0x0123, vzero_shift_mask), 31);
      vacc0x4567 = vsraq_n_s32(vacc0x4567, vbicq_s32(vacc0x4567, vzero_shift_mask), 31);
  
      vacc0x0123 = vrshlq_s32(vacc0x0123, vright_shift);
      vacc0x4567 = vrshlq_s32(vacc0x4567, vright_shift);
  
      const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->neon.output_zero_point);
  #if XNN_ARCH_ARM64
      const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
      int8x8_t vout0x01234567 = vqmovn_s16(vacc0x01234567);
  #else
      const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
  
      int8x8_t vout0x01234567 = vqmovn_s16(vacc0x01234567);
  #endif
      const int8x8_t voutput_min = vld1_dup_s8(&params->neon.output_min);
      const int8x8_t voutput_max = vld1_dup_s8(&params->neon.output_max);
  
      vout0x01234567 = vmax_s8(vout0x01234567, voutput_min);
  
      vout0x01234567 = vmin_s8(vout0x01234567, voutput_max);
  
      if (nc >= 8) {
        vst1_s8(c0 + 0, vout0x01234567);
  
        c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
  
        a0 = (const int8_t*) ((uintptr_t) a0 - (kc - k));
  
        nc -= 8;
      } else {
        if (nc & 4) {
          vst1_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpret_u32_s8(vout0x01234567), 0); c0 += 4;
          vout0x01234567 = vext_s8(vout0x01234567, vout0x01234567, 4);
        }
        if (nc & 2) {
          vst1_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpret_u16_s8(vout0x01234567), 0); c0 += 2;
          vout0x01234567 = vext_s8(vout0x01234567, vout0x01234567, 2);
        }
        if (nc & 1) {
          vst1_lane_s8(c0, vout0x01234567, 0);
        }
  
        nc = 0;
      }
    } while (nc != 0);
  }
  