// Auto-generated file. Do not edit!
//   Template: src/qs8-gemm/c4-neondot.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 <arm_neon.h>

#include "xnnpack/gemm.h"
#include "xnnpack/math.h"


void xnn_qd8_f32_qc8w_gemm_minmax_ukernel_5x8c4__neondot(
    size_t mr,
    size_t nc,
    size_t kc,
    const int8_t* restrict a,
    size_t a_stride,
    const void* restrict w,
    float* restrict c,
    size_t cm_stride,
    size_t cn_stride,
    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 <= 5);
  assert(nc != 0);
  assert(kc != 0);
  assert(kc % sizeof(int8_t) == 0);
  assert(a != NULL);
  assert(w != NULL);
  assert(c != NULL);

  kc = round_up_po2(kc, 4 * sizeof(int8_t));
  const int8_t* a0 = a;
  float* c0 = c;
  const int8_t* a1 = (const int8_t*) ((uintptr_t) a0 + a_stride);
  float* c1 = (float*) ((uintptr_t) c0 + cm_stride);
  if XNN_UNPREDICTABLE(mr < 2) {
    a1 = a0;
    c1 = c0;
  }
  const int8_t* a2 = (const int8_t*) ((uintptr_t) a1 + a_stride);
  float* c2 = (float*) ((uintptr_t) c1 + cm_stride);
  if XNN_UNPREDICTABLE(mr <= 2) {
    a2 = a1;
    c2 = c1;
  }
  const int8_t* a3 = (const int8_t*) ((uintptr_t) a2 + a_stride);
  float* c3 = (float*) ((uintptr_t) c2 + cm_stride);
  if XNN_UNPREDICTABLE(mr < 4) {
    a3 = a2;
    c3 = c2;
  }
  const int8_t* a4 = (const int8_t*) ((uintptr_t) a3 + a_stride);
  float* c4 = (float*) ((uintptr_t) c3 + cm_stride);
  if XNN_UNPREDICTABLE(mr <= 4) {
    a4 = a3;
    c4 = c3;
  }

  // Loop over groups of 8 columns.
  do {
    // Initialize accumulators with bias. 8 bias values are loaded from the
    // weight matrix, at the start of the group of 8 columns.
    const int32x4_t vinput_zero_point01 = vld1q_s32(&quantization_params[0].zero_point);
    const int32x4_t vksum0123 = vld1q_s32(w); w = (const int32_t*) w + 4;
    int32x4_t vacc0x0123 = vmulq_lane_s32(vksum0123, vget_low_s32(vinput_zero_point01), 0);
    int32x4_t vacc1x0123 = vmulq_lane_s32(vksum0123, vget_high_s32(vinput_zero_point01), 0);
    const int32x4_t vksum4567 = vld1q_s32(w); w = (const int32_t*) w + 4;
    int32x4_t vacc0x4567 = vmulq_lane_s32(vksum4567, vget_low_s32(vinput_zero_point01), 0);
    int32x4_t vacc1x4567 = vmulq_lane_s32(vksum4567, vget_high_s32(vinput_zero_point01), 0);
    const int32x4_t vinput_zero_point23 = vld1q_s32(&quantization_params[2].zero_point);
    int32x4_t vacc2x0123 = vmulq_lane_s32(vksum0123, vget_low_s32(vinput_zero_point23), 0);
    int32x4_t vacc3x0123 = vmulq_lane_s32(vksum0123, vget_high_s32(vinput_zero_point23), 0);
    int32x4_t vacc2x4567 = vmulq_lane_s32(vksum4567, vget_low_s32(vinput_zero_point23), 0);
    int32x4_t vacc3x4567 = vmulq_lane_s32(vksum4567, vget_high_s32(vinput_zero_point23), 0);
    const int32x4_t vinput_zero_point4 = vld1q_dup_s32(&quantization_params[4].zero_point);
    int32x4_t vacc4x0123 = vmulq_s32(vksum0123, vinput_zero_point4);
    int32x4_t vacc4x4567 = vmulq_s32(vksum4567, vinput_zero_point4);

    // Inner accumulation loop along the 8 columns.
    size_t k = kc;
    // 2x partial unrolled loop to load 8 bytes at a time.
    while (k >= 8 * sizeof(int8_t)) {
      // Load a 5x8 block of activations.
      const int8x8_t va0x01234567 = vld1_s8(a0); a0 += 8;
      const int8x8_t va1x01234567 = vld1_s8(a1); a1 += 8;
      const int8x8_t va2x01234567 = vld1_s8(a2); a2 += 8;
      const int8x8_t va3x01234567 = vld1_s8(a3); a3 += 8;
      const int8x8_t va4x01234567 = vld1_s8(a4); a4 += 8;

      // Load a 8x8 block of weights.
      const int8x16_t vb0123x0123 = vld1q_s8(w); w = (const int8_t*) w + 16;
      const int8x16_t vb0123x4567 = vld1q_s8(w); w = (const int8_t*) w + 16;
      const int8x16_t vb4567x0123 = vld1q_s8(w); w = (const int8_t*) w + 16;
      const int8x16_t vb4567x4567 = vld1q_s8(w); w = (const int8_t*) w + 16;

      // Multiply-accumulate: 5x8 * 8x8 --> 5x8.
      vacc0x0123 = vdotq_lane_s32(vacc0x0123, vb0123x0123, va0x01234567, 0);
      vacc0x4567 = vdotq_lane_s32(vacc0x4567, vb0123x4567, va0x01234567, 0);
      vacc1x0123 = vdotq_lane_s32(vacc1x0123, vb0123x0123, va1x01234567, 0);
      vacc1x4567 = vdotq_lane_s32(vacc1x4567, vb0123x4567, va1x01234567, 0);
      vacc2x0123 = vdotq_lane_s32(vacc2x0123, vb0123x0123, va2x01234567, 0);
      vacc2x4567 = vdotq_lane_s32(vacc2x4567, vb0123x4567, va2x01234567, 0);
      vacc3x0123 = vdotq_lane_s32(vacc3x0123, vb0123x0123, va3x01234567, 0);
      vacc3x4567 = vdotq_lane_s32(vacc3x4567, vb0123x4567, va3x01234567, 0);
      vacc4x0123 = vdotq_lane_s32(vacc4x0123, vb0123x0123, va4x01234567, 0);
      vacc4x4567 = vdotq_lane_s32(vacc4x4567, vb0123x4567, va4x01234567, 0);
      vacc0x0123 = vdotq_lane_s32(vacc0x0123, vb4567x0123, va0x01234567, 1);
      vacc0x4567 = vdotq_lane_s32(vacc0x4567, vb4567x4567, va0x01234567, 1);
      vacc1x0123 = vdotq_lane_s32(vacc1x0123, vb4567x0123, va1x01234567, 1);
      vacc1x4567 = vdotq_lane_s32(vacc1x4567, vb4567x4567, va1x01234567, 1);
      vacc2x0123 = vdotq_lane_s32(vacc2x0123, vb4567x0123, va2x01234567, 1);
      vacc2x4567 = vdotq_lane_s32(vacc2x4567, vb4567x4567, va2x01234567, 1);
      vacc3x0123 = vdotq_lane_s32(vacc3x0123, vb4567x0123, va3x01234567, 1);
      vacc3x4567 = vdotq_lane_s32(vacc3x4567, vb4567x4567, va3x01234567, 1);
      vacc4x0123 = vdotq_lane_s32(vacc4x0123, vb4567x0123, va4x01234567, 1);
      vacc4x4567 = vdotq_lane_s32(vacc4x4567, vb4567x4567, va4x01234567, 1);

      k -= 8 * sizeof(int8_t);
    }
    // Handle up to 4 final positions of `k`
    if XNN_UNLIKELY(k != 0) {
      // Load a 5x4 block of activations.
      const int8x8_t va0x01234567 = vld1_s8(a0); a0 += 4;
      const int8x8_t va1x01234567 = vld1_s8(a1); a1 += 4;
      const int8x8_t va2x01234567 = vld1_s8(a2); a2 += 4;
      const int8x8_t va3x01234567 = vld1_s8(a3); a3 += 4;
      const int8x8_t va4x01234567 = vld1_s8(a4); a4 += 4;

      // Load a 4x8 block of weights.
      const int8x16_t vb0123x0123 = vld1q_s8(w); w = (const int8_t*) w + 16;
      const int8x16_t vb0123x4567 = vld1q_s8(w); w = (const int8_t*) w + 16;

      // Multiply-accumulate: 5x4 * 4x8 --> 5x8.
      vacc0x0123 = vdotq_lane_s32(vacc0x0123, vb0123x0123, va0x01234567, 0);
      vacc0x4567 = vdotq_lane_s32(vacc0x4567, vb0123x4567, va0x01234567, 0);
      vacc1x0123 = vdotq_lane_s32(vacc1x0123, vb0123x0123, va1x01234567, 0);
      vacc1x4567 = vdotq_lane_s32(vacc1x4567, vb0123x4567, va1x01234567, 0);
      vacc2x0123 = vdotq_lane_s32(vacc2x0123, vb0123x0123, va2x01234567, 0);
      vacc2x4567 = vdotq_lane_s32(vacc2x4567, vb0123x4567, va2x01234567, 0);
      vacc3x0123 = vdotq_lane_s32(vacc3x0123, vb0123x0123, va3x01234567, 0);
      vacc3x4567 = vdotq_lane_s32(vacc3x4567, vb0123x4567, va3x01234567, 0);
      vacc4x0123 = vdotq_lane_s32(vacc4x0123, vb0123x0123, va4x01234567, 0);
      vacc4x4567 = vdotq_lane_s32(vacc4x4567, vb0123x4567, va4x01234567, 0);
    }

    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);
    float32x4_t vout4x0123 = vcvtq_f32_s32(vacc4x0123);
    float32x4_t vout4x4567 = vcvtq_f32_s32(vacc4x4567);
    const float32x4_t vinput_scale01 = vreinterpretq_f32_s32(vld1q_s32(&quantization_params[0].zero_point));
    vout0x0123 = vmulq_lane_f32(vout0x0123, vget_low_f32(vinput_scale01), 1);
    vout1x0123 = vmulq_lane_f32(vout1x0123, vget_high_f32(vinput_scale01), 1);
    vout0x4567 = vmulq_lane_f32(vout0x4567, vget_low_f32(vinput_scale01), 1);
    vout1x4567 = vmulq_lane_f32(vout1x4567, vget_high_f32(vinput_scale01), 1);
    const float32x4_t vinput_scale23 = vreinterpretq_f32_s32(vld1q_s32(&quantization_params[2].zero_point));
    vout2x0123 = vmulq_lane_f32(vout2x0123, vget_low_f32(vinput_scale23), 1);
    vout3x0123 = vmulq_lane_f32(vout3x0123, vget_high_f32(vinput_scale23), 1);
    vout2x4567 = vmulq_lane_f32(vout2x4567, vget_low_f32(vinput_scale23), 1);
    vout3x4567 = vmulq_lane_f32(vout3x4567, vget_high_f32(vinput_scale23), 1);
    const float32x4_t vinput_scale4 = vld1q_dup_f32(&quantization_params[4].inv_scale);
    vout4x0123 = vmulq_f32(vout4x0123, vinput_scale4);
    vout4x4567 = vmulq_f32(vout4x4567, vinput_scale4);

    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;
    #if XNN_ARCH_ARM64
      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);
      vout4x0123 = vfmaq_f32(vbias0123, vout4x0123, vfilter_output_scale0123);
    #else
      vout0x0123 = vmlaq_f32(vbias0123, vout0x0123, vfilter_output_scale0123);
      vout1x0123 = vmlaq_f32(vbias0123, vout1x0123, vfilter_output_scale0123);
      vout2x0123 = vmlaq_f32(vbias0123, vout2x0123, vfilter_output_scale0123);
      vout3x0123 = vmlaq_f32(vbias0123, vout3x0123, vfilter_output_scale0123);
      vout4x0123 = vmlaq_f32(vbias0123, vout4x0123, vfilter_output_scale0123);
    #endif
    const float32x4_t vbias4567 = vld1q_f32(w); w = (const float*) w + 4;
    #if XNN_ARCH_ARM64
      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);
      vout4x4567 = vfmaq_f32(vbias4567, vout4x4567, vfilter_output_scale4567);
    #else
      vout0x4567 = vmlaq_f32(vbias4567, vout0x4567, vfilter_output_scale4567);
      vout1x4567 = vmlaq_f32(vbias4567, vout1x4567, vfilter_output_scale4567);
      vout2x4567 = vmlaq_f32(vbias4567, vout2x4567, vfilter_output_scale4567);
      vout3x4567 = vmlaq_f32(vbias4567, vout3x4567, vfilter_output_scale4567);
      vout4x4567 = vmlaq_f32(vbias4567, vout4x4567, vfilter_output_scale4567);
    #endif

    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);
    vout4x0123 = vmaxq_f32(vout4x0123, voutput_min);
    vout4x4567 = vmaxq_f32(vout4x4567, 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);
    vout4x0123 = vminq_f32(vout4x0123, voutput_max);
    vout4x4567 = vminq_f32(vout4x4567, voutput_max);

    if XNN_LIKELY(nc >= 8) {
      vst1q_f32(c0, vout0x0123);
      vst1q_f32(c0 + 4, vout0x4567);
      vst1q_f32(c1, vout1x0123);
      vst1q_f32(c1 + 4, vout1x4567);
      vst1q_f32(c2, vout2x0123);
      vst1q_f32(c2 + 4, vout2x4567);
      vst1q_f32(c3, vout3x0123);
      vst1q_f32(c3 + 4, vout3x4567);
      vst1q_f32(c4, vout4x0123);
      vst1q_f32(c4 + 4, vout4x4567);

      a0 = (const int8_t*) ((uintptr_t) a0 - kc);
      a1 = (const int8_t*) ((uintptr_t) a1 - kc);
      a2 = (const int8_t*) ((uintptr_t) a2 - kc);
      a3 = (const int8_t*) ((uintptr_t) a3 - kc);
      a4 = (const int8_t*) ((uintptr_t) a4 - kc);

      c0 = (float*) ((uintptr_t) c0 + cn_stride);
      c1 = (float*) ((uintptr_t) c1 + cn_stride);
      c2 = (float*) ((uintptr_t) c2 + cn_stride);
      c3 = (float*) ((uintptr_t) c3 + cn_stride);
      c4 = (float*) ((uintptr_t) c4 + cn_stride);

      nc -= 8;
    } else {
     if (nc & 4) {
       vst1q_f32(c0, vout0x0123); c0 += 4;
       vout0x0123 = vout0x4567;
       vst1q_f32(c1, vout1x0123); c1 += 4;
       vout1x0123 = vout1x4567;
       vst1q_f32(c2, vout2x0123); c2 += 4;
       vout2x0123 = vout2x4567;
       vst1q_f32(c3, vout3x0123); c3 += 4;
       vout3x0123 = vout3x4567;
       vst1q_f32(c4, vout4x0123); c4 += 4;
       vout4x0123 = vout4x4567;
     }
     float32x2_t vout0x01 = vget_low_f32(vout0x0123);
     float32x2_t vout1x01 = vget_low_f32(vout1x0123);
     float32x2_t vout2x01 = vget_low_f32(vout2x0123);
     float32x2_t vout3x01 = vget_low_f32(vout3x0123);
     float32x2_t vout4x01 = vget_low_f32(vout4x0123);
     if (nc & 2) {
       vst1_f32(c0, vout0x01); c0 += 2;
       vst1_f32(c1, vout1x01); c1 += 2;
       vst1_f32(c2, vout2x01); c2 += 2;
       vst1_f32(c3, vout3x01); c3 += 2;
       vst1_f32(c4, vout4x01); c4 += 2;
       vout0x01 = vget_high_f32(vout0x0123);
       vout1x01 = vget_high_f32(vout1x0123);
       vout2x01 = vget_high_f32(vout2x0123);
       vout3x01 = vget_high_f32(vout3x0123);
       vout4x01 = vget_high_f32(vout4x0123);
     }
     if (nc & 1) {
       vst1_lane_f32(c0, vout0x01, 0);
       vst1_lane_f32(c1, vout1x01, 0);
       vst1_lane_f32(c2, vout2x01, 0);
       vst1_lane_f32(c3, vout3x01, 0);
       vst1_lane_f32(c4, vout4x01, 0);
     }
      nc = 0;
    }
  } while (nc != 0);
}