// Auto-generated file. Do not edit!
//   Template: src/qs8-igemm/c8-neoni8mm.c.in
//   Generator: tools/xngen
//
// Copyright 2023 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_qd8_f32_qc8w_igemm_minmax_ukernel_4x8c8__neoni8mm(
    size_t mr,
    size_t nc,
    size_t kc,
    size_t ks,
    const int8_t** restrict a,
    const void* restrict w,
    float* restrict c,
    size_t cm_stride,
    size_t cn_stride,
    size_t a_offset,
    const int8_t* zero,
    const int8_t* zero_data,
    const union xnn_f32_minmax_params params[restrict XNN_MIN_ELEMENTS(1)],
    const struct xnn_qd8_quantization_params quantization_params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
{
  assert(mr != 0);
  assert(mr <= 4);
  assert(nc != 0);
  assert(kc != 0);
  assert(ks != 0);
  assert(ks % (4 * 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));
  float* c0 = c;
  float* c1 = (float*) ((uintptr_t) c0 + cm_stride);
  if XNN_UNPREDICTABLE(mr < 2) {
    c1 = c0;
  }
  float* c2 = (float*) ((uintptr_t) c1 + cm_stride);
  if XNN_UNPREDICTABLE(mr <= 2) {
    c2 = c1;
  }
  float* c3 = (float*) ((uintptr_t) c2 + cm_stride);
  if XNN_UNPREDICTABLE(mr != 4) {
    c3 = c2;
  }

  do {
    const int32x4_t vinput_zero_point = vld1q_dup_s32(&quantization_params->zero_point);
    const int32x4_t vksum0123 = vld1q_s32(w); w = (const int32_t*) w + 4;
    const int32x4_t vksumzp0x0123 = vmulq_s32(vksum0123, vinput_zero_point);
    const int32x4_t vksum4567 = vld1q_s32(w); w = (const int32_t*) w + 4;
    const int32x4_t vksumzp0x4567 = vmulq_s32(vksum4567, vinput_zero_point);
    const int32x4_t vksumzp1x0123 = vksumzp0x0123;
    const int32x4_t vksumzp1x4567 = vksumzp0x4567;
    const int32x4_t vksumzp2x0123 = vksumzp0x0123;
    const int32x4_t vksumzp2x4567 = vksumzp0x4567;
    const int32x4_t vksumzp3x0123 = vksumzp0x0123;
    const int32x4_t vksumzp3x4567 = vksumzp0x4567;

    int32x4_t vacc01x01 = vreinterpretq_s32_u64(vtrn1q_u64(vreinterpretq_u64_s32(vksumzp0x0123), vreinterpretq_u64_s32(vksumzp1x0123)));
    int32x4_t vacc01x23 = vreinterpretq_s32_u64(vtrn2q_u64(vreinterpretq_u64_s32(vksumzp0x0123), vreinterpretq_u64_s32(vksumzp1x0123)));
    int32x4_t vacc01x45 = vreinterpretq_s32_u64(vtrn1q_u64(vreinterpretq_u64_s32(vksumzp0x4567), vreinterpretq_u64_s32(vksumzp1x4567)));
    int32x4_t vacc01x67 = vreinterpretq_s32_u64(vtrn2q_u64(vreinterpretq_u64_s32(vksumzp0x4567), vreinterpretq_u64_s32(vksumzp1x4567)));
    int32x4_t vacc23x01 = vreinterpretq_s32_u64(vtrn1q_u64(vreinterpretq_u64_s32(vksumzp2x0123), vreinterpretq_u64_s32(vksumzp3x0123)));
    int32x4_t vacc23x23 = vreinterpretq_s32_u64(vtrn2q_u64(vreinterpretq_u64_s32(vksumzp2x0123), vreinterpretq_u64_s32(vksumzp3x0123)));
    int32x4_t vacc23x45 = vreinterpretq_s32_u64(vtrn1q_u64(vreinterpretq_u64_s32(vksumzp2x4567), vreinterpretq_u64_s32(vksumzp3x4567)));
    int32x4_t vacc23x67 = vreinterpretq_s32_u64(vtrn2q_u64(vreinterpretq_u64_s32(vksumzp2x4567), vreinterpretq_u64_s32(vksumzp3x4567)));

    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);
      } else {
        a0 = zero_data;
      }
      const int8_t* restrict a1 = a[1];
      if XNN_UNPREDICTABLE(a1 != zero) {
        a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
      } else {
        a1 = zero_data;
      }
      const int8_t* restrict a2 = a[2];
      if XNN_UNPREDICTABLE(a2 != zero) {
        a2 = (const int8_t*) ((uintptr_t) a2 + a_offset);
      } else {
        a2 = zero_data;
      }
      const int8_t* restrict a3 = a[3];
      if XNN_UNPREDICTABLE(a3 != zero) {
        a3 = (const int8_t*) ((uintptr_t) a3 + a_offset);
      } else {
        a3 = zero_data;
      }
      a += 4;

      uint64x2x2_t va01x0123456789ABCDEF;
      va01x0123456789ABCDEF.val[0] = vdupq_n_u64(0);
      va01x0123456789ABCDEF.val[1] = vdupq_n_u64(0);
      uint64x2x2_t va23x0123456789ABCDEF;
      va23x0123456789ABCDEF.val[0] = vdupq_n_u64(0);
      va23x0123456789ABCDEF.val[1] = vdupq_n_u64(0);

      // Inner accumulation loop along the 8 columns.
      size_t k = kc;
      // 2x partial unrolled loop to load 8 bytes at a time.
      while (k >= 16 * sizeof(int8_t)) {
        // Load a 4x16 block of activations.
        va01x0123456789ABCDEF = vld2q_lane_u64((const void*) a0, va01x0123456789ABCDEF, 0); a0 += 16;
        va23x0123456789ABCDEF = vld2q_lane_u64((const void*) a2, va23x0123456789ABCDEF, 0); a2 += 16;
        va01x0123456789ABCDEF = vld2q_lane_u64((const void*) a1, va01x0123456789ABCDEF, 1); a1 += 16;
        va23x0123456789ABCDEF = vld2q_lane_u64((const void*) a3, va23x0123456789ABCDEF, 1); a3 += 16;

        // Load a 16x8 block of weights.
        const int8x16_t vb01x01234567 = vld1q_s8(w); w = (const int8_t*) w + 16;
        const int8x16_t vb23x01234567 = vld1q_s8(w); w = (const int8_t*) w + 16;
        const int8x16_t vb45x01234567 = vld1q_s8(w); w = (const int8_t*) w + 16;
        const int8x16_t vb67x01234567 = vld1q_s8(w); w = (const int8_t*) w + 16;
        const int8x16_t vb01x89ABCDEF = vld1q_s8(w); w = (const int8_t*) w + 16;
        const int8x16_t vb23x89ABCDEF = vld1q_s8(w); w = (const int8_t*) w + 16;
        const int8x16_t vb45x89ABCDEF = vld1q_s8(w); w = (const int8_t*) w + 16;
        const int8x16_t vb67x89ABCDEF = vld1q_s8(w); w = (const int8_t*) w + 16;

        // Multiply-accumulate: 4x16 * 16x8 --> 4x8.
        vacc01x01 = vmmlaq_s32(vacc01x01, vreinterpretq_s8_u64(va01x0123456789ABCDEF.val[0]), vb01x01234567);
        vacc01x23 = vmmlaq_s32(vacc01x23, vreinterpretq_s8_u64(va01x0123456789ABCDEF.val[0]), vb23x01234567);
        vacc01x45 = vmmlaq_s32(vacc01x45, vreinterpretq_s8_u64(va01x0123456789ABCDEF.val[0]), vb45x01234567);
        vacc01x67 = vmmlaq_s32(vacc01x67, vreinterpretq_s8_u64(va01x0123456789ABCDEF.val[0]), vb67x01234567);
        vacc23x01 = vmmlaq_s32(vacc23x01, vreinterpretq_s8_u64(va23x0123456789ABCDEF.val[0]), vb01x01234567);
        vacc23x23 = vmmlaq_s32(vacc23x23, vreinterpretq_s8_u64(va23x0123456789ABCDEF.val[0]), vb23x01234567);
        vacc23x45 = vmmlaq_s32(vacc23x45, vreinterpretq_s8_u64(va23x0123456789ABCDEF.val[0]), vb45x01234567);
        vacc23x67 = vmmlaq_s32(vacc23x67, vreinterpretq_s8_u64(va23x0123456789ABCDEF.val[0]), vb67x01234567);
        vacc01x01 = vmmlaq_s32(vacc01x01, vreinterpretq_s8_u64(va01x0123456789ABCDEF.val[1]), vb01x89ABCDEF);
        vacc01x23 = vmmlaq_s32(vacc01x23, vreinterpretq_s8_u64(va01x0123456789ABCDEF.val[1]), vb23x89ABCDEF);
        vacc01x45 = vmmlaq_s32(vacc01x45, vreinterpretq_s8_u64(va01x0123456789ABCDEF.val[1]), vb45x89ABCDEF);
        vacc01x67 = vmmlaq_s32(vacc01x67, vreinterpretq_s8_u64(va01x0123456789ABCDEF.val[1]), vb67x89ABCDEF);
        vacc23x01 = vmmlaq_s32(vacc23x01, vreinterpretq_s8_u64(va23x0123456789ABCDEF.val[1]), vb01x89ABCDEF);
        vacc23x23 = vmmlaq_s32(vacc23x23, vreinterpretq_s8_u64(va23x0123456789ABCDEF.val[1]), vb23x89ABCDEF);
        vacc23x45 = vmmlaq_s32(vacc23x45, vreinterpretq_s8_u64(va23x0123456789ABCDEF.val[1]), vb45x89ABCDEF);
        vacc23x67 = vmmlaq_s32(vacc23x67, vreinterpretq_s8_u64(va23x0123456789ABCDEF.val[1]), vb67x89ABCDEF);

        k -= 16 * sizeof(int8_t);
      }
      // Handle up to 8 final positions of `k`
      if XNN_UNLIKELY(k != 0) {
        // Load a 4x8 block of activations.
        uint64x2_t va01x01234567 = vld1q_dup_u64((const void*) a0); a0 += 8;
        uint64x2_t va23x01234567 = vld1q_dup_u64((const void*) a2); a2 += 8;
        va01x01234567 = vld1q_lane_u64((const void*) a1, va01x01234567, 1); a1 += 8;
        va23x01234567 = vld1q_lane_u64((const void*) a3, va23x01234567, 1); a3 += 8;

        // Load a 16x8 block of weights.
        const int8x16_t vb01x01234567 = vld1q_s8(w); w = (const int8_t*) w + 16;
        const int8x16_t vb23x01234567 = vld1q_s8(w); w = (const int8_t*) w + 16;
        const int8x16_t vb45x01234567 = vld1q_s8(w); w = (const int8_t*) w + 16;
        const int8x16_t vb67x01234567 = vld1q_s8(w); w = (const int8_t*) w + 16;

        // Multiply-accumulate: 4x4 * 4x8 --> 4x8.
        vacc01x01 = vmmlaq_s32(vacc01x01, vreinterpretq_s8_u64(va01x01234567), vb01x01234567);
        vacc01x23 = vmmlaq_s32(vacc01x23, vreinterpretq_s8_u64(va01x01234567), vb23x01234567);
        vacc01x45 = vmmlaq_s32(vacc01x45, vreinterpretq_s8_u64(va01x01234567), vb45x01234567);
        vacc01x67 = vmmlaq_s32(vacc01x67, vreinterpretq_s8_u64(va01x01234567), vb67x01234567);
        vacc23x01 = vmmlaq_s32(vacc23x01, vreinterpretq_s8_u64(va23x01234567), vb01x01234567);
        vacc23x23 = vmmlaq_s32(vacc23x23, vreinterpretq_s8_u64(va23x01234567), vb23x01234567);
        vacc23x45 = vmmlaq_s32(vacc23x45, vreinterpretq_s8_u64(va23x01234567), vb45x01234567);
        vacc23x67 = vmmlaq_s32(vacc23x67, vreinterpretq_s8_u64(va23x01234567), vb67x01234567);
      }

      p -= 4 * sizeof(void*);
    } while (p != 0);

    int32x4_t vacc0x0123 = vcombine_s32(vget_low_s32(vacc01x01), vget_low_s32(vacc01x23));
    int32x4_t vacc1x0123 = vcombine_s32(vget_high_s32(vacc01x01), vget_high_s32(vacc01x23));
    int32x4_t vacc0x4567 = vcombine_s32(vget_low_s32(vacc01x45), vget_low_s32(vacc01x67));
    int32x4_t vacc1x4567 = vcombine_s32(vget_high_s32(vacc01x45), vget_high_s32(vacc01x67));
    int32x4_t vacc2x0123 = vcombine_s32(vget_low_s32(vacc23x01), vget_low_s32(vacc23x23));
    int32x4_t vacc3x0123 = vcombine_s32(vget_high_s32(vacc23x01), vget_high_s32(vacc23x23));
    int32x4_t vacc2x4567 = vcombine_s32(vget_low_s32(vacc23x45), vget_low_s32(vacc23x67));
    int32x4_t vacc3x4567 = vcombine_s32(vget_high_s32(vacc23x45), vget_high_s32(vacc23x67));

    const float32x4_t vinput_scale = vld1q_dup_f32(&quantization_params->inv_scale);
    float32x4_t vout0x0123 = vcvtq_f32_s32(vacc0x0123);
    float32x4_t vout0x4567 = vcvtq_f32_s32(vacc0x4567);
    float32x4_t vout1x0123 = vcvtq_f32_s32(vacc1x0123);
    float32x4_t vout1x4567 = vcvtq_f32_s32(vacc1x4567);
    float32x4_t vout2x0123 = vcvtq_f32_s32(vacc2x0123);
    float32x4_t vout2x4567 = vcvtq_f32_s32(vacc2x4567);
    float32x4_t vout3x0123 = vcvtq_f32_s32(vacc3x0123);
    float32x4_t vout3x4567 = vcvtq_f32_s32(vacc3x4567);
    vout0x0123 = vmulq_f32(vout0x0123, vinput_scale);
    vout1x0123 = vmulq_f32(vout1x0123, vinput_scale);
    vout0x4567 = vmulq_f32(vout0x4567, vinput_scale);
    vout1x4567 = vmulq_f32(vout1x4567, vinput_scale);
    vout2x0123 = vmulq_f32(vout2x0123, vinput_scale);
    vout3x0123 = vmulq_f32(vout3x0123, vinput_scale);
    vout2x4567 = vmulq_f32(vout2x4567, vinput_scale);
    vout3x4567 = vmulq_f32(vout3x4567, vinput_scale);

    const float32x4_t vfilter_output_scale0123 = vld1q_f32(w); w = (const float*) w + 4;
    const float32x4_t vfilter_output_scale4567 = vld1q_f32(w); w = (const float*) w + 4;

    const float32x4_t vbias0123 = vld1q_f32(w); w = (const float*) w + 4;
    vout0x0123 = vfmaq_f32(vbias0123, vout0x0123, vfilter_output_scale0123);
    vout1x0123 = vfmaq_f32(vbias0123, vout1x0123, vfilter_output_scale0123);
    vout2x0123 = vfmaq_f32(vbias0123, vout2x0123, vfilter_output_scale0123);
    vout3x0123 = vfmaq_f32(vbias0123, vout3x0123, vfilter_output_scale0123);
    const float32x4_t vbias4567 = vld1q_f32(w); w = (const float*) w + 4;
    vout0x4567 = vfmaq_f32(vbias4567, vout0x4567, vfilter_output_scale4567);
    vout1x4567 = vfmaq_f32(vbias4567, vout1x4567, vfilter_output_scale4567);
    vout2x4567 = vfmaq_f32(vbias4567, vout2x4567, vfilter_output_scale4567);
    vout3x4567 = vfmaq_f32(vbias4567, vout3x4567, vfilter_output_scale4567);

    const float32x4_t voutput_min = vld1q_dup_f32(&params->scalar.min);
    vout0x0123 = vmaxq_f32(vout0x0123, voutput_min);
    vout0x4567 = vmaxq_f32(vout0x4567, voutput_min);
    vout1x0123 = vmaxq_f32(vout1x0123, voutput_min);
    vout1x4567 = vmaxq_f32(vout1x4567, voutput_min);
    vout2x0123 = vmaxq_f32(vout2x0123, voutput_min);
    vout2x4567 = vmaxq_f32(vout2x4567, voutput_min);
    vout3x0123 = vmaxq_f32(vout3x0123, voutput_min);
    vout3x4567 = vmaxq_f32(vout3x4567, voutput_min);

    const float32x4_t voutput_max = vld1q_dup_f32(&params->scalar.max);
    vout0x0123 = vminq_f32(vout0x0123, voutput_max);
    vout0x4567 = vminq_f32(vout0x4567, voutput_max);
    vout1x0123 = vminq_f32(vout1x0123, voutput_max);
    vout1x4567 = vminq_f32(vout1x4567, voutput_max);
    vout2x0123 = vminq_f32(vout2x0123, voutput_max);
    vout2x4567 = vminq_f32(vout2x4567, voutput_max);
    vout3x0123 = vminq_f32(vout3x0123, voutput_max);
    vout3x4567 = vminq_f32(vout3x4567, voutput_max);

    if XNN_LIKELY(nc >= 8) {
      vst1q_f32(c3, vout3x0123);
      vst1q_f32(c3 + 4, vout3x4567);
      vst1q_f32(c2, vout2x0123);
      vst1q_f32(c2 + 4, vout2x4567);
      vst1q_f32(c1, vout1x0123);
      vst1q_f32(c1 + 4, vout1x4567);
      vst1q_f32(c0, vout0x0123);
      vst1q_f32(c0 + 4, vout0x4567);

      c3 = (float*) ((uintptr_t) c3 + cn_stride);
      c2 = (float*) ((uintptr_t) c2 + cn_stride);
      c1 = (float*) ((uintptr_t) c1 + cn_stride);
      c0 = (float*) ((uintptr_t) c0 + cn_stride);

      a = (const int8_t**restrict) ((uintptr_t) a - ks);

      nc -= 8;
    } else {
      if (nc & 4) {
        vst1q_f32(c3, vout3x0123); c3 += 4;
        vout3x0123 = vout3x4567;
        vst1q_f32(c2, vout2x0123); c2 += 4;
        vout2x0123 = vout2x4567;
        vst1q_f32(c1, vout1x0123); c1 += 4;
        vout1x0123 = vout1x4567;
        vst1q_f32(c0, vout0x0123); c0 += 4;
        vout0x0123 = vout0x4567;
      }
      float32x2_t vout3x01 = vget_low_f32(vout3x0123);
      float32x2_t vout2x01 = vget_low_f32(vout2x0123);
      float32x2_t vout1x01 = vget_low_f32(vout1x0123);
      float32x2_t vout0x01 = vget_low_f32(vout0x0123);
      if (nc & 2) {
        vst1_f32(c3, vout3x01); c3 += 2;
        vst1_f32(c2, vout2x01); c2 += 2;
        vst1_f32(c1, vout1x01); c1 += 2;
        vst1_f32(c0, vout0x01); c0 += 2;
        vout3x01 = vget_high_f32(vout3x0123);
        vout2x01 = vget_high_f32(vout2x0123);
        vout1x01 = vget_high_f32(vout1x0123);
        vout0x01 = vget_high_f32(vout0x0123);
      }
      if (nc & 1) {
        vst1_lane_f32(c3, vout3x01, 0);
        vst1_lane_f32(c2, vout2x01, 0);
        vst1_lane_f32(c1, vout1x01, 0);
        vst1_lane_f32(c0, vout0x01, 0);
      }
      nc = 0;
    }
  } while (nc != 0);
}
