src/f32-dwconv/gen/up8x4-minmax-neon-acc2.c

// Auto-generated file. Do not edit!
//   Template: src/f32-dwconv/up-neon.c.in
//   Generator: tools/xngen
//
// Copyright 2019 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/dwconv.h>


void xnn_f32_dwconv_minmax_ukernel_up8x4__neon_acc2(
    size_t channels,
    size_t output_width,
    const float** input,
    const float* weights,
    float* output,
    size_t input_stride,
    size_t output_increment,
    const union xnn_f32_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
{
  assert(channels != 0);
  assert(output_width != 0);

  const float32x4_t vmax = vld1q_dup_f32(&params->scalar.max);
  const float32x4_t vmin = vld1q_dup_f32(&params->scalar.min);
  do {
    const float* i0 = input[0];
    assert(i0 != NULL);
    const float* i1 = input[1];
    assert(i1 != NULL);
    const float* i2 = input[2];
    assert(i2 != NULL);
    const float* i3 = input[3];
    assert(i3 != NULL);
    input = (const float**) ((uintptr_t) input + input_stride);

    size_t c = channels;
    const float* w = weights;
    for (; c >= 8; c -= 8) {
      float32x4_t vacc0123p0 = vld1q_f32(w); w += 4;
      float32x4_t vacc4567p0 = vld1q_f32(w); w += 4;


      const float32x4_t vi0x0123 = vld1q_f32(i0); i0 += 4;
      const float32x4_t vi0x4567 = vld1q_f32(i0); i0 += 4;
      const float32x4_t vk0x0123 = vld1q_f32(w); w += 4;
      const float32x4_t vk0x4567 = vld1q_f32(w); w += 4;
      vacc0123p0 = vmlaq_f32(vacc0123p0, vi0x0123, vk0x0123);
      vacc4567p0 = vmlaq_f32(vacc4567p0, vi0x4567, vk0x4567);

      const float32x4_t vi1x0123 = vld1q_f32(i1); i1 += 4;
      const float32x4_t vi1x4567 = vld1q_f32(i1); i1 += 4;
      const float32x4_t vk1x0123 = vld1q_f32(w); w += 4;
      const float32x4_t vk1x4567 = vld1q_f32(w); w += 4;
      float32x4_t vacc0123p1 = vmulq_f32(vi1x0123, vk1x0123);
      float32x4_t vacc4567p1 = vmulq_f32(vi1x4567, vk1x4567);

      const float32x4_t vi2x0123 = vld1q_f32(i2); i2 += 4;
      const float32x4_t vi2x4567 = vld1q_f32(i2); i2 += 4;
      const float32x4_t vk2x0123 = vld1q_f32(w); w += 4;
      const float32x4_t vk2x4567 = vld1q_f32(w); w += 4;
      vacc0123p0 = vmlaq_f32(vacc0123p0, vi2x0123, vk2x0123);
      vacc4567p0 = vmlaq_f32(vacc4567p0, vi2x4567, vk2x4567);

      const float32x4_t vi3x0123 = vld1q_f32(i3); i3 += 4;
      const float32x4_t vi3x4567 = vld1q_f32(i3); i3 += 4;
      const float32x4_t vk3x0123 = vld1q_f32(w); w += 4;
      const float32x4_t vk3x4567 = vld1q_f32(w); w += 4;
      vacc0123p1 = vmlaq_f32(vacc0123p1, vi3x0123, vk3x0123);
      vacc4567p1 = vmlaq_f32(vacc4567p1, vi3x4567, vk3x4567);

      // Add up all accumulators to vacc01234567p0
      vacc0123p0 = vaddq_f32(vacc0123p0, vacc0123p1);
      vacc4567p0 = vaddq_f32(vacc4567p0, vacc4567p1);

      float32x4_t vacc0123 = vmaxq_f32(vacc0123p0, vmin);
      float32x4_t vacc4567 = vmaxq_f32(vacc4567p0, vmin);
      vacc0123 = vminq_f32(vacc0123, vmax);
      vacc4567 = vminq_f32(vacc4567, vmax);

      vst1q_f32(output, vacc0123); output += 4;
      vst1q_f32(output, vacc4567); output += 4;
    }
    for (; c >= 4; c -= 4) {
      float32x4_t vacc0123p0 = vld1q_f32(w); w += 4;


      const float32x4_t vi0x0123 = vld1q_f32(i0); i0 += 4;
      const float32x4_t vk0x0123 = vld1q_f32(w + 4);
      vacc0123p0 = vmlaq_f32(vacc0123p0, vi0x0123, vk0x0123);

      const float32x4_t vi1x0123 = vld1q_f32(i1); i1 += 4;
      const float32x4_t vk1x0123 = vld1q_f32(w + 12);
      float32x4_t vacc0123p1 = vmulq_f32(vi1x0123, vk1x0123);

      const float32x4_t vi2x0123 = vld1q_f32(i2); i2 += 4;
      const float32x4_t vk2x0123 = vld1q_f32(w + 20);
      vacc0123p0 = vmlaq_f32(vacc0123p0, vi2x0123, vk2x0123);

      const float32x4_t vi3x0123 = vld1q_f32(i3); i3 += 4;
      const float32x4_t vk3x0123 = vld1q_f32(w + 28);
      vacc0123p1 = vmlaq_f32(vacc0123p1, vi3x0123, vk3x0123);

      // Add up all accumulators to vacc0123p0
      vacc0123p0 = vaddq_f32(vacc0123p0, vacc0123p1);

      float32x4_t vacc0123 = vmaxq_f32(vacc0123p0, vmin);
      vacc0123 = vminq_f32(vacc0123, vmax);

      vst1q_f32(output, vacc0123); output += 4;
    }
    if XNN_UNLIKELY(c != 0) {
      float32x4_t vacc0123p0 = vld1q_f32(w);


      const float32x4_t vi0x0123 = vld1q_f32(i0);
      const float32x4_t vk0x0123 = vld1q_f32(w + 8);
      vacc0123p0 = vmlaq_f32(vacc0123p0, vi0x0123, vk0x0123);

      const float32x4_t vi1x0123 = vld1q_f32(i1);
      const float32x4_t vk1x0123 = vld1q_f32(w + 16);
      float32x4_t vacc0123p1 = vmulq_f32(vi1x0123, vk1x0123);

      const float32x4_t vi2x0123 = vld1q_f32(i2);
      const float32x4_t vk2x0123 = vld1q_f32(w + 24);
      vacc0123p0 = vmlaq_f32(vacc0123p0, vi2x0123, vk2x0123);

      const float32x4_t vi3x0123 = vld1q_f32(i3);
      const float32x4_t vk3x0123 = vld1q_f32(w + 32);
      vacc0123p1 = vmlaq_f32(vacc0123p1, vi3x0123, vk3x0123);

      // Add up all accumulators to vacc0123p0
      vacc0123p0 = vaddq_f32(vacc0123p0, vacc0123p1);

      float32x4_t vacc0123 = vmaxq_f32(vacc0123p0, vmin);
      vacc0123 = vminq_f32(vacc0123, vmax);

      float32x2_t vacc01 = vget_low_f32(vacc0123);
      if (c & 2) {
        vst1_f32(output, vacc01); output += 2;
        vacc01 = vget_high_f32(vacc0123);
      }
      if (c & 1) {
        vst1_lane_f32(output, vacc01, 0); output += 1;
      }
    }

    output = (float*) ((uintptr_t) output + output_increment);
  } while (--output_width != 0);
}