text: // Auto-generated file. Do not edit!
  //   Template: src/x32-transposec/neon-zip.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 <arm_neon.h>
  
  #include <assert.h>
  
  #include <xnnpack/common.h>
  #include <xnnpack/math.h>
  #include <xnnpack/transpose.h>
  
  void xnn_x32_transposec_ukernel__4x4_multi_multi_zip_neon(
      const uint32_t* input,
      uint32_t* output,
      size_t input_stride,
      size_t output_stride,
      size_t block_width,
      size_t block_height)
  {
    assert(output_stride >= block_height * sizeof(uint32_t));
    assert(input_stride >= block_width * sizeof(uint32_t));
  
    const size_t tile_height = 4;
    const size_t tile_width = 4;
    const size_t tile_hbytes = tile_height * sizeof(uint32_t);
    const size_t tile_wbytes = tile_width * sizeof(uint32_t);
    const size_t input_reset = tile_wbytes - round_down_po2(block_height, tile_height) * input_stride;
    const size_t input_offset = tile_height * input_stride;
    const size_t output_reset = tile_width * output_stride - round_down_po2(block_height, 2) * sizeof(uint32_t);
  
    const uint32_t* i0 = input;
    const uint32_t* i1 = (const uint32_t*) ((uintptr_t) i0 + input_stride);
    const uint32_t* i2 = (const uint32_t*) ((uintptr_t) i1 + input_stride);
    const uint32_t* i3 = (const uint32_t*) ((uintptr_t) i2 + input_stride);
    uint32_t* o0 = (uint32_t*) output;
    uint32_t* o1 = (uint32_t*) ((uintptr_t) o0 + output_stride);
    uint32_t* o2 = (uint32_t*) ((uintptr_t) o1 + output_stride);
    uint32_t* o3 = (uint32_t*) ((uintptr_t) o2 + output_stride);
  
    do {
      if XNN_UNPREDICTABLE(block_width < 2) {
        o1 = o0;
      }
      if XNN_UNPREDICTABLE(block_width <= 2) {
        o2 = o0;
      }
      if XNN_UNPREDICTABLE(block_width < 4) {
        o3 = o0;
      }
      size_t bh = block_height;
      for (; bh >= 4; bh -= 4) {
        const uint32x4_t v2_0 = vld1q_u32(i0); i0 = (uint32_t*) ((uintptr_t) i0 + input_offset);
        const uint32x4_t v2_1 = vld1q_u32(i1); i1 = (uint32_t*) ((uintptr_t) i1 + input_offset);
        const uint32x4_t v2_2 = vld1q_u32(i2); i2 = (uint32_t*) ((uintptr_t) i2 + input_offset);
        const uint32x4_t v2_3 = vld1q_u32(i3); i3 = (uint32_t*) ((uintptr_t) i3 + input_offset);
  
        const uint32x4x2_t v1_0 = vzipq_u32(v2_0, v2_2);
        const uint32x4x2_t v1_1 = vzipq_u32(v2_1, v2_3);
  
        const uint32x4x2_t v0_0 = vzipq_u32(v1_0.val[0], v1_1.val[0]);
        const uint32x4x2_t v0_1 = vzipq_u32(v1_0.val[1], v1_1.val[1]);
  
        vst1q_u32(o3, v0_1.val[1]); o3 = (uint32_t*) ((uintptr_t) o3 + tile_hbytes);
        vst1q_u32(o2, v0_1.val[0]); o2 = (uint32_t*) ((uintptr_t) o2 + tile_hbytes);
        vst1q_u32(o1, v0_0.val[1]); o1 = (uint32_t*) ((uintptr_t) o1 + tile_hbytes);
        vst1q_u32(o0, v0_0.val[0]); o0 = (uint32_t*) ((uintptr_t) o0 + tile_hbytes);
      }
  
      if (bh != 0) {
        const uint32x4_t v2_0 = vld1q_u32(i0);
        if XNN_UNPREDICTABLE(bh < 2) {
          i1 = i0;
        }
        const uint32x4_t v2_1 = vld1q_u32(i1);
        if XNN_UNPREDICTABLE(bh <= 2) {
          i2 = i0;
        }
        const uint32x4_t v2_2 = vld1q_u32(i2);
        const uint32x4_t v2_3 = vmovq_n_u32(0);
  
        const uint32x4x2_t v1_0 = vzipq_u32(v2_0, v2_2);
        const uint32x4x2_t v1_1 = vzipq_u32(v2_1, v2_3);
  
        const uint32x4x2_t v0_0 = vzipq_u32(v1_0.val[0], v1_1.val[0]);
        const uint32x4x2_t v0_1 = vzipq_u32(v1_0.val[1], v1_1.val[1]);
  
        uint32x2_t v0_low = vget_low_u32(v0_0.val[0]);
        uint32x2_t v1_low = vget_low_u32(v0_0.val[1]);
        uint32x2_t v2_low = vget_low_u32(v0_1.val[0]);
        uint32x2_t v3_low = vget_low_u32(v0_1.val[1]);
  
        if (bh & 2) {
          vst1_u32(o3, v3_low); o3 += 2;
          vst1_u32(o2, v2_low); o2 += 2;
          vst1_u32(o1, v1_low); o1 += 2;
          vst1_u32(o0, v0_low); o0 += 2;
          v0_low = vget_high_u32(v0_0.val[0]);
          v1_low = vget_high_u32(v0_0.val[1]);
          v2_low = vget_high_u32(v0_1.val[0]);
          v3_low = vget_high_u32(v0_1.val[1]);
        }
  
        if (bh & 1) {
          vst1_lane_u32(o3, v3_low, 0);
          vst1_lane_u32(o2, v2_low, 0);
          vst1_lane_u32(o1, v1_low, 0);
          vst1_lane_u32(o0, v0_low, 0);
        }
      }
  
      i0 = (const uint32_t*) ((uintptr_t) i0 + input_reset);
      i1 = (const uint32_t*) ((uintptr_t) i0 + input_stride);
      i2 = (const uint32_t*) ((uintptr_t) i1 + input_stride);
      i3 = (const uint32_t*) ((uintptr_t) i2 + input_stride);
      o0 = (uint32_t*) ((uintptr_t) o0 + output_reset);
      o1 = (uint32_t*) ((uintptr_t) o1 + output_reset);
      o2 = (uint32_t*) ((uintptr_t) o2 + output_reset);
      o3 = (uint32_t*) ((uintptr_t) o3 + output_reset);
      block_width = doz(block_width, tile_width);
    } while (block_width != 0);
  }
  