text: // Auto-generated file. Do not edit!
  //   Template: src/f32-dwconv2d-chw/3x3s2p1-wasmsimd-splat.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 <wasm_simd128.h>
  
  #include <xnnpack/dwconv.h>
  #include <xnnpack/math.h>
  
  
  
  void xnn_f32_dwconv2d_chw_ukernel_3x3s2p1__wasmsimd_arm_splat_1x4_acc3(
      size_t input_height,
      size_t input_width,
      const float* input,
      const float* weights,
      const float* zero,
      float* output,
      uint32_t padding_top,
      const union xnn_f32_chw_params params[restrict XNN_MIN_ELEMENTS(1)])
  {
    assert(input_height != 0);
    assert(input_width != 0);
    assert(input_width % sizeof(float) == 0);
    assert(padding_top >= 0);
    assert(padding_top <= 1);
  
    const v128_t vmask_even = wasm_v128_load(params->scalar.mask_even);
    const v128_t vmask_odd  = wasm_v128_load(params->scalar.mask_odd);
    const v128_t vmax = wasm_v128_load32_splat(&params->scalar.max);
    const v128_t vmin = wasm_v128_load32_splat(&params->scalar.min);
  
    const v128_t vw0123 = wasm_v128_load(weights);
    const v128_t vw4567 = wasm_v128_load(weights + 4);
    const v128_t vw89 = wasm_v128_load64_splat(weights + 8);
  
    const size_t input_decrement = round_down_po2(input_width, 4 /* SIMD output width */ * 2 /* subsampling */ * sizeof(float));
  
    const float* i0 = (const float*) ((uintptr_t) input - ((-padding_top) & input_width));
    const float* i1 = (const float*) ((uintptr_t) i0 + input_width);
    if XNN_UNPREDICTABLE(padding_top != 0) {
      i0 = zero;
    }
    const float* i2 = (const float*) ((uintptr_t) i1 + input_width);
  
    float* o0 = output;
  
    size_t padded_input_height = input_height + padding_top + 1 /* padding bottom */;
    size_t output_height = (padded_input_height - 3 /* kernel size */ + 2 /* subsampling */) / 2;
    do {
      if XNN_UNPREDICTABLE(padded_input_height < 4) {
        i2 = zero;
      }
  
      v128_t vi0x1357 = wasm_f32x4_const_splat(0.0f);
      v128_t vi1x1357 = wasm_f32x4_const_splat(0.0f);
      v128_t vi2x1357 = wasm_f32x4_const_splat(0.0f);
  
      size_t w = input_width;
      for (; w >= 8 * sizeof(float); w -= 8 * sizeof(float)) {
        v128_t vo0p0 = wasm_v32x4_shuffle(vw0123, vw0123, 0, 0, 0, 0);
  
        const v128_t vi0x89AB = wasm_v128_load(i0);
        const v128_t vi0xCDEF = wasm_v128_load(i0 + 4);
        i0 += 8;
        const v128_t vi1x89AB = wasm_v128_load(i1);
        const v128_t vi1xCDEF = wasm_v128_load(i1 + 4);
        i1 += 8;
        const v128_t vi2x89AB = wasm_v128_load(i2);
        const v128_t vi2xCDEF = wasm_v128_load(i2 + 4);
        i2 += 8;
  
        const v128_t vi0x8ACE = wasm_v32x4_shuffle(vi0x89AB, vi0xCDEF, 0, 2, 4, 6);
        const v128_t vi0x9BDF = wasm_v32x4_shuffle(vi0x89AB, vi0xCDEF, 1, 3, 5, 7);
        const v128_t vi1x8ACE = wasm_v32x4_shuffle(vi1x89AB, vi1xCDEF, 0, 2, 4, 6);
        const v128_t vi1x9BDF = wasm_v32x4_shuffle(vi1x89AB, vi1xCDEF, 1, 3, 5, 7);
        const v128_t vi2x8ACE = wasm_v32x4_shuffle(vi2x89AB, vi2xCDEF, 0, 2, 4, 6);
        const v128_t vi2x9BDF = wasm_v32x4_shuffle(vi2x89AB, vi2xCDEF, 1, 3, 5, 7);
  
        v128_t vo0p1 = wasm_f32x4_mul(vi0x8ACE, wasm_v32x4_shuffle(vw0123, vw0123, 2, 2, 2, 2));
  
        v128_t vo0p2 = wasm_f32x4_mul(vi1x8ACE, wasm_v32x4_shuffle(vw4567, vw4567, 1, 1, 1, 1));
  
        vo0p1 = wasm_f32x4_add(vo0p1, wasm_f32x4_mul(vi2x8ACE, wasm_v32x4_shuffle(vw89, vw89, 0, 0, 0, 0)));
  
        const v128_t vi0x7BDF = wasm_v32x4_shuffle(vi0x1357, vi0x9BDF, 3, 4, 5, 6);
        vi0x1357 = vi0x9BDF;
        const v128_t vi1x7BDF = wasm_v32x4_shuffle(vi1x1357, vi1x9BDF, 3, 4, 5, 6);
        vi1x1357 = vi1x9BDF;
        const v128_t vi2x7BDF = wasm_v32x4_shuffle(vi2x1357, vi2x9BDF, 3, 4, 5, 6);
        vi2x1357 = vi2x9BDF;
  
        vo0p2 = wasm_f32x4_add(vo0p2, wasm_f32x4_mul(vi0x7BDF, wasm_v32x4_shuffle(vw0123, vw0123, 1, 1, 1, 1)));
  
        vo0p0 = wasm_f32x4_add(vo0p0, wasm_f32x4_mul(vi1x7BDF, wasm_v32x4_shuffle(vw4567, vw4567, 0, 0, 0, 0)));
  
        vo0p1 = wasm_f32x4_add(vo0p1, wasm_f32x4_mul(vi2x7BDF, wasm_v32x4_shuffle(vw4567, vw4567, 3, 3, 3, 3)));
  
        vo0p2 = wasm_f32x4_add(vo0p2, wasm_f32x4_mul(vi0x9BDF, wasm_v32x4_shuffle(vw0123, vw0123, 3, 3, 3, 3)));
  
        vo0p0 = wasm_f32x4_add(vo0p0, wasm_f32x4_mul(vi1x9BDF, wasm_v32x4_shuffle(vw4567, vw4567, 2, 2, 2, 2)));
  
        vo0p1 = wasm_f32x4_add(vo0p1, wasm_f32x4_mul(vi2x9BDF, wasm_v32x4_shuffle(vw89, vw89, 1, 1, 1, 1)));
  
        vo0p0 = wasm_f32x4_add(vo0p0, vo0p1);
        vo0p0 = wasm_f32x4_add(vo0p0, vo0p2);
  
        v128_t vo0 = wasm_f32x4_max(vo0p0, vmin);
        vo0 = wasm_f32x4_min(vo0, vmax);
  
        wasm_v128_store(o0, vo0); o0 += 4;
      }
      // Last block has 0-7 pixels to process.
      assert(w < 8 * sizeof(float));
      if XNN_LIKELY(w != 0) {
        v128_t vo0p0 = wasm_v32x4_shuffle(vw0123, vw0123, 0, 0, 0, 0);
  
        const v128_t vi0x89AB = wasm_v128_load(i0);
        const v128_t vi0xCDEF = wasm_v128_load(i0 + 4);
        const v128_t vi1x89AB = wasm_v128_load(i1);
        const v128_t vi1xCDEF = wasm_v128_load(i1 + 4);
        const v128_t vi2x89AB = wasm_v128_load(i2);
        const v128_t vi2xCDEF = wasm_v128_load(i2 + 4);
  
        const v128_t vi0x8ACE = wasm_v128_and(vmask_even, wasm_v32x4_shuffle(vi0x89AB, vi0xCDEF, 0, 2, 4, 6));
        const v128_t vi0x9BDF = wasm_v128_and(vmask_odd,  wasm_v32x4_shuffle(vi0x89AB, vi0xCDEF, 1, 3, 5, 7));
        const v128_t vi1x8ACE = wasm_v128_and(vmask_even, wasm_v32x4_shuffle(vi1x89AB, vi1xCDEF, 0, 2, 4, 6));
        const v128_t vi1x9BDF = wasm_v128_and(vmask_odd,  wasm_v32x4_shuffle(vi1x89AB, vi1xCDEF, 1, 3, 5, 7));
        const v128_t vi2x8ACE = wasm_v128_and(vmask_even, wasm_v32x4_shuffle(vi2x89AB, vi2xCDEF, 0, 2, 4, 6));
        const v128_t vi2x9BDF = wasm_v128_and(vmask_odd,  wasm_v32x4_shuffle(vi2x89AB, vi2xCDEF, 1, 3, 5, 7));
  
        v128_t vo0p1 = wasm_f32x4_mul(vi0x8ACE, wasm_v32x4_shuffle(vw0123, vw0123, 2, 2, 2, 2));
  
        v128_t vo0p2 = wasm_f32x4_mul(vi1x8ACE, wasm_v32x4_shuffle(vw4567, vw4567, 1, 1, 1, 1));
  
        vo0p1 = wasm_f32x4_add(vo0p1, wasm_f32x4_mul(vi2x8ACE, wasm_v32x4_shuffle(vw89, vw89, 0, 0, 0, 0)));
  
        const v128_t vi0x7BDF = wasm_v32x4_shuffle(vi0x1357, vi0x9BDF, 3, 4, 5, 6);
        const v128_t vi1x7BDF = wasm_v32x4_shuffle(vi1x1357, vi1x9BDF, 3, 4, 5, 6);
        const v128_t vi2x7BDF = wasm_v32x4_shuffle(vi2x1357, vi2x9BDF, 3, 4, 5, 6);
  
        vo0p2 = wasm_f32x4_add(vo0p2, wasm_f32x4_mul(vi0x7BDF, wasm_v32x4_shuffle(vw0123, vw0123, 1, 1, 1, 1)));
  
        vo0p0 = wasm_f32x4_add(vo0p0, wasm_f32x4_mul(vi1x7BDF, wasm_v32x4_shuffle(vw4567, vw4567, 0, 0, 0, 0)));
  
        vo0p1 = wasm_f32x4_add(vo0p1, wasm_f32x4_mul(vi2x7BDF, wasm_v32x4_shuffle(vw4567, vw4567, 3, 3, 3, 3)));
  
        vo0p2 = wasm_f32x4_add(vo0p2, wasm_f32x4_mul(vi0x9BDF, wasm_v32x4_shuffle(vw0123, vw0123, 3, 3, 3, 3)));
  
        vo0p0 = wasm_f32x4_add(vo0p0, wasm_f32x4_mul(vi1x9BDF, wasm_v32x4_shuffle(vw4567, vw4567, 2, 2, 2, 2)));
  
        vo0p1 = wasm_f32x4_add(vo0p1, wasm_f32x4_mul(vi2x9BDF, wasm_v32x4_shuffle(vw89, vw89, 1, 1, 1, 1)));
  
        vo0p0 = wasm_f32x4_add(vo0p0, vo0p1);
        vo0p0 = wasm_f32x4_add(vo0p0, vo0p2);
  
        v128_t vo0 = wasm_f32x4_max(vo0p0, vmin);
        vo0 = wasm_f32x4_min(vo0, vmax);
  
        w += 1 * sizeof(float);
        if (w & (8 * sizeof(float))) {
          wasm_v128_store(o0, vo0); o0 += 4;
        } else {
          if (w & (4 * sizeof(float))) {
            *((double*) o0) = wasm_f64x2_extract_lane(vo0, 0); o0 += 2;
  
            vo0 = wasm_v32x4_shuffle(vo0, vo0, 2, 3, 0, 1);
          }
          if (w & (2 * sizeof(float))) {
            *o0 = wasm_f32x4_extract_lane(vo0, 0); o0 += 1;
          }
        }
      }
  
      i0 = (const float*) ((uintptr_t) i2 - input_decrement);
      i1 = (const float*) ((uintptr_t) i0 + input_width);
      i2 = (const float*) ((uintptr_t) i1 + input_width);
  
  
      output_height -= 1;
      padded_input_height -= 2;
    } while (output_height != 0);
  }
  