1 // Auto-generated file. Do not edit!
2 // Template: src/x24-transposec/scalar.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2022 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
11 #include <assert.h>
12
13 #include <xnnpack/common.h>
14 #include <xnnpack/math.h>
15 #include <xnnpack/transpose.h>
16
xnn_x24_transposec_ukernel__2x2_scalar(const void * input,void * output,size_t input_stride,size_t output_stride,size_t block_width,size_t block_height)17 void xnn_x24_transposec_ukernel__2x2_scalar(
18 const void *input,
19 void * output,
20 size_t input_stride,
21 size_t output_stride,
22 size_t block_width,
23 size_t block_height)
24 {
25 assert(output_stride >= block_height * 3);
26 assert(input_stride >= block_width * 3);
27
28 const size_t input_reset = 6 - round_down_po2(block_height, 2) * input_stride;
29 const size_t output_reset = 2 * output_stride - block_height * 3;
30 const size_t input_offset = 2 * input_stride;
31
32 const uint8_t* i0 = (const uint8_t*) input;
33 const uint8_t* i1 = (const uint8_t*) ((uintptr_t) i0 + input_stride);
34
35 uint8_t* o0 = (uint8_t*) output;
36 uint8_t* o1 = (uint8_t*) ((uintptr_t) o0 + output_stride);
37
38 do {
39 if XNN_UNPREDICTABLE(block_width < 2) {
40 o1 = o0;
41 }
42 size_t bh = block_height;
43 for (; bh >= 2; bh -= 2) {
44 o1[0] = i0[3];
45 o1[1] = i0[4];
46 o1[2] = i0[5];
47 o1[3] = i1[3];
48 o1[4] = i1[4];
49 o1[5] = i1[5];
50 o1 += 6;
51 o0[0] = i0[0];
52 o0[1] = i0[1];
53 o0[2] = i0[2];
54 o0[3] = i1[0];
55 o0[4] = i1[1];
56 o0[5] = i1[2];
57 o0 += 6;
58 i0 = (const uint8_t*) ((uintptr_t) i0 + input_offset);
59 i1 = (const uint8_t*) ((uintptr_t) i1 + input_offset);
60 }
61 const uint8_t* i = i0;
62 if (bh & 1) {
63 o1[0] = i[3];
64 o1[1] = i[4];
65 o1[2] = i[5];
66 o1 += 3;
67 o0[0] = i[0];
68 o0[1] = i[1];
69 o0[2] = i[2];
70 o0 += 3;
71 }
72
73 i0 = (const uint8_t*) ((uintptr_t) i0 + input_reset);
74 i1 = (const uint8_t*) ((uintptr_t) i0 + input_stride);
75 o0 = (uint8_t*) ((uintptr_t) o0 + output_reset);
76 o1 = (uint8_t*) ((uintptr_t) o1 + output_reset);
77 block_width = doz(block_width, 2);
78 } while (block_width != 0);
79 }
80