src/qs8-gavgpool/gen/7p7x-minmax-fp32-scalar-fmagic-c1.c

// Auto-generated file. Do not edit!
//   Template: src/qs8-gavgpool/multipass-scalar.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 <fp16.h>

#include <xnnpack/gavgpool.h>
#include <xnnpack/math.h>


void xnn_qs8_gavgpool_minmax_fp32_ukernel_7p7x__scalar_fmagic_c1(
    size_t rows,
    size_t channels,
    const int8_t* input,
    size_t input_stride,
    const int8_t* zero,
    int32_t* buffer,
    int8_t* output,
    const union xnn_qs8_avgpool_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
{
  assert(rows > 7);
  assert(channels != 0);

  const int8_t* i0 = input;
  const int8_t* i1 = (const int8_t*) ((uintptr_t) i0 + input_stride);
  const int8_t* i2 = (const int8_t*) ((uintptr_t) i1 + input_stride);
  const int8_t* i3 = (const int8_t*) ((uintptr_t) i2 + input_stride);
  const int8_t* i4 = (const int8_t*) ((uintptr_t) i3 + input_stride);
  const int8_t* i5 = (const int8_t*) ((uintptr_t) i4 + input_stride);
  const int8_t* i6 = (const int8_t*) ((uintptr_t) i5 + input_stride);
  const size_t input_increment = 7 * input_stride - round_up_po2(channels, 1);

  const int32_t vinit_bias = params->fp32_scalar_fmagic.init_bias;
  int32_t* b = buffer;
  size_t c = channels;
  do {
    int32_t vacc = vinit_bias;
    const int32_t vi0 = *i0++;
    const int32_t vi1 = *i1++;

    vacc += vi0;
    const int32_t vi2 = *i2++;
    vacc += vi1;
    const int32_t vi3 = *i3++;
    vacc += vi2;
    const int32_t vi4 = *i4++;
    vacc += vi3;
    const int32_t vi5 = *i5++;
    vacc += vi4;
    const int32_t vi6 = *i6++;

    vacc += vi5;
    vacc += vi6;

    *b++ = vacc;
  } while (--c != 0);

  for (rows -= 7; rows > 7; rows -= 7) {
    i0 = (const int8_t*) ((uintptr_t) i0 + input_increment);
    i1 = (const int8_t*) ((uintptr_t) i1 + input_increment);
    i2 = (const int8_t*) ((uintptr_t) i2 + input_increment);
    i3 = (const int8_t*) ((uintptr_t) i3 + input_increment);
    i4 = (const int8_t*) ((uintptr_t) i4 + input_increment);
    i5 = (const int8_t*) ((uintptr_t) i5 + input_increment);
    i6 = (const int8_t*) ((uintptr_t) i6 + input_increment);

    int32_t* b = buffer;
    size_t c = channels;
    do {
      int32_t vacc = *b;
      const int32_t vi0 = *i0++;
      const int32_t vi1 = *i1++;

      vacc += vi0;
      const int32_t vi2 = *i2++;
      vacc += vi1;
      const int32_t vi3 = *i3++;
      vacc += vi2;
      const int32_t vi4 = *i4++;
      vacc += vi3;
      const int32_t vi5 = *i5++;
      vacc += vi4;
      const int32_t vi6 = *i6++;

      vacc += vi5;
      vacc += vi6;

      *b++ = vacc;
    } while (--c != 0);
  }

  i0 = (const int8_t*) ((uintptr_t) i0 + input_increment);
  i1 = (const int8_t*) ((uintptr_t) i1 + input_increment);
  if XNN_UNPREDICTABLE(rows < 2) {
    i1 = zero;
  }
  i2 = (const int8_t*) ((uintptr_t) i2 + input_increment);
  if XNN_UNPREDICTABLE(rows <= 2) {
    i2 = zero;
  }
  i3 = (const int8_t*) ((uintptr_t) i3 + input_increment);
  if XNN_UNPREDICTABLE(rows < 4) {
    i3 = zero;
  }
  i4 = (const int8_t*) ((uintptr_t) i4 + input_increment);
  if XNN_UNPREDICTABLE(rows <= 4) {
    i4 = zero;
  }
  i5 = (const int8_t*) ((uintptr_t) i5 + input_increment);
  if XNN_UNPREDICTABLE(rows < 6) {
    i5 = zero;
  }
  i6 = (const int8_t*) ((uintptr_t) i6 + input_increment);
  if XNN_UNPREDICTABLE(rows <= 6) {
    i6 = zero;
  }

  const float vscale = params->fp32_scalar_fmagic.scale;
  const float voutput_min_less_zero_point = params->fp32_scalar_fmagic.output_min_less_zero_point;
  const float voutput_max_less_zero_point = params->fp32_scalar_fmagic.output_max_less_zero_point;
  const float vmagic_bias = params->fp32_scalar_fmagic.magic_bias;
  const int32_t vmagic_bias_less_output_zero_point = params->fp32_scalar_fmagic.magic_bias_less_output_zero_point;
  do {
    int32_t vacc = *buffer++;
    const int32_t vi0 = *i0++;
    const int32_t vi1 = *i1++;

    vacc += vi0;
    const int32_t vi2 = *i2++;
    vacc += vi1;
    const int32_t vi3 = *i3++;
    vacc += vi2;
    const int32_t vi4 = *i4++;
    vacc += vi3;
    const int32_t vi5 = *i5++;
    vacc += vi4;
    const int32_t vi6 = *i6++;

    vacc += vi5;
    vacc += vi6;

    float vfpacc = (float) vacc * vscale;
    vfpacc = math_max_f32(vfpacc, voutput_min_less_zero_point);
    vfpacc = math_min_f32(vfpacc, voutput_max_less_zero_point);
    vfpacc += vmagic_bias;
    int32_t vout = (int32_t) fp32_to_bits(vfpacc) - vmagic_bias_less_output_zero_point;

    *output++ = (int8_t) vout;
  } while (--channels != 0);
}