1 // Auto-generated file. Do not edit!
2 // Template: src/x32-transposec/neon-zip.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2021 Google LLC
6 //
7 // This source code is licensed under the BSD-style license found in the
8 // LICENSE file in the root directory of this source tree.
9
10 #include <arm_neon.h>
11
12 #include <assert.h>
13
14 #include <xnnpack/common.h>
15 #include <xnnpack/math.h>
16 #include <xnnpack/transpose.h>
17
xnn_x32_transposec_ukernel__2x2_multi_dec_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)18 void xnn_x32_transposec_ukernel__2x2_multi_dec_zip_neon(
19 const uint32_t* input,
20 uint32_t* output,
21 size_t input_stride,
22 size_t output_stride,
23 size_t block_width,
24 size_t block_height) XNN_OOB_READS
25 {
26 assert(output_stride >= block_height * sizeof(uint32_t));
27 assert(input_stride >= block_width * sizeof(uint32_t));
28
29 const size_t tile_height = 2;
30 const size_t tile_width = 2;
31 const size_t tile_hbytes = tile_height * sizeof(uint32_t);
32 const size_t tile_wbytes = tile_width * sizeof(uint32_t);
33 const size_t input_reset = tile_wbytes - round_down_po2(block_height, tile_height) * input_stride;
34 const size_t input_offset = tile_height * input_stride;
35 const size_t output_reset = tile_width * output_stride - round_down_po2(block_height, 2) * sizeof(uint32_t) - tile_hbytes;
36
37 const uint32_t* i0 = input;
38 const uint32_t* i1 = (const uint32_t*) ((uintptr_t) i0 + input_stride);
39 uint32_t* o = (uint32_t*) ((uintptr_t) output - tile_hbytes);
40 const size_t minus_output_stride = -output_stride;
41
42 do {
43 const size_t rem = min(block_width - 1, 1);
44 const size_t oN_stride = rem * output_stride;
45 const size_t oN_offset = oN_stride + tile_hbytes;
46 size_t bh = block_height;
47 for (; bh >= 2; bh -= 2) {
48 const uint32x2_t v1_0 = vld1_u32(i0); i0 = (uint32_t*) ((uintptr_t) i0 + input_offset);
49 const uint32x2_t v1_1 = vld1_u32(i1); i1 = (uint32_t*) ((uintptr_t) i1 + input_offset);
50
51 const uint32x2x2_t v0_0 = vzip_u32(v1_0, v1_1);
52
53
54 o = (uint32_t*) ((uintptr_t) o + oN_offset);
55 vst1_u32(o, v0_0.val[1]);
56 if XNN_UNPREDICTABLE(block_width > 1) {
57 o = (uint32_t*) ((uintptr_t) o + minus_output_stride);
58 }
59 vst1_u32(o, v0_0.val[0]);
60 }
61 o = (uint32_t*) ((uintptr_t) o + tile_hbytes);
62
63 if (bh != 0) {
64 const uint32x2_t v1_0 = vld1_u32(i0);
65 const uint32x2_t v1_1 = vmov_n_u32(0);
66
67 const uint32x2x2_t v0_0 = vzip_u32(v1_0, v1_1);
68
69
70 uint32x2_t v0_low = v0_0.val[0];
71 uint32x2_t v1_low = v0_0.val[1];
72
73 if (bh & 1) {
74 o = (uint32_t*) ((uintptr_t) o + oN_stride);
75 vst1_lane_u32(o, v1_low, 0);
76 if XNN_UNPREDICTABLE(block_width > 1) {
77 o = (uint32_t*) ((uintptr_t) o + minus_output_stride);
78 }
79 vst1_lane_u32(o, v0_low, 0);
80 }
81 }
82
83 i0 = (const uint32_t*) ((uintptr_t) i0 + input_reset);
84 i1 = (const uint32_t*) ((uintptr_t) i0 + input_stride);
85 o = (uint32_t*) ((uintptr_t) o + output_reset);
86 block_width = doz(block_width, tile_width);
87 } while (block_width != 0);
88 }
89