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__4x4_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__4x4_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 = 12 - round_down_po2(block_height, 4) * input_stride;
29 const size_t output_reset = 4 * output_stride - block_height * 3;
30 const size_t input_offset = 4 * 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 const uint8_t* i2 = (const uint8_t*) ((uintptr_t) i1 + input_stride);
35 const uint8_t* i3 = (const uint8_t*) ((uintptr_t) i2 + input_stride);
36
37 uint8_t* o0 = (uint8_t*) output;
38 uint8_t* o1 = (uint8_t*) ((uintptr_t) o0 + output_stride);
39 uint8_t* o2 = (uint8_t*) ((uintptr_t) o1 + output_stride);
40 uint8_t* o3 = (uint8_t*) ((uintptr_t) o2 + output_stride);
41
42 do {
43 if XNN_UNPREDICTABLE(block_width < 2) {
44 o1 = o0;
45 }
46 if XNN_UNPREDICTABLE(block_width <= 2) {
47 o2 = o0;
48 }
49 if XNN_UNPREDICTABLE(block_width < 4) {
50 o3 = o0;
51 }
52 size_t bh = block_height;
53 for (; bh >= 4; bh -= 4) {
54 o3[0] = i0[9];
55 o3[1] = i0[10];
56 o3[2] = i0[11];
57 o3[3] = i1[9];
58 o3[4] = i1[10];
59 o3[5] = i1[11];
60 o3[6] = i2[9];
61 o3[7] = i2[10];
62 o3[8] = i2[11];
63 o3[9] = i3[9];
64 o3[10] = i3[10];
65 o3[11] = i3[11];
66 o3 += 12;
67 o2[0] = i0[6];
68 o2[1] = i0[7];
69 o2[2] = i0[8];
70 o2[3] = i1[6];
71 o2[4] = i1[7];
72 o2[5] = i1[8];
73 o2[6] = i2[6];
74 o2[7] = i2[7];
75 o2[8] = i2[8];
76 o2[9] = i3[6];
77 o2[10] = i3[7];
78 o2[11] = i3[8];
79 o2 += 12;
80 o1[0] = i0[3];
81 o1[1] = i0[4];
82 o1[2] = i0[5];
83 o1[3] = i1[3];
84 o1[4] = i1[4];
85 o1[5] = i1[5];
86 o1[6] = i2[3];
87 o1[7] = i2[4];
88 o1[8] = i2[5];
89 o1[9] = i3[3];
90 o1[10] = i3[4];
91 o1[11] = i3[5];
92 o1 += 12;
93 o0[0] = i0[0];
94 o0[1] = i0[1];
95 o0[2] = i0[2];
96 o0[3] = i1[0];
97 o0[4] = i1[1];
98 o0[5] = i1[2];
99 o0[6] = i2[0];
100 o0[7] = i2[1];
101 o0[8] = i2[2];
102 o0[9] = i3[0];
103 o0[10] = i3[1];
104 o0[11] = i3[2];
105 o0 += 12;
106 i0 = (const uint8_t*) ((uintptr_t) i0 + input_offset);
107 i1 = (const uint8_t*) ((uintptr_t) i1 + input_offset);
108 i2 = (const uint8_t*) ((uintptr_t) i2 + input_offset);
109 i3 = (const uint8_t*) ((uintptr_t) i3 + input_offset);
110 }
111 const uint8_t* i = i0;
112 if (bh & 2) {
113 o3[0] = i0[9];
114 o3[1] = i0[10];
115 o3[2] = i0[11];
116 o3[3] = i1[9];
117 o3[4] = i1[10];
118 o3[5] = i1[11];
119 o3 += 6;
120 o2[0] = i0[6];
121 o2[1] = i0[7];
122 o2[2] = i0[8];
123 o2[3] = i1[6];
124 o2[4] = i1[7];
125 o2[5] = i1[8];
126 o2 += 6;
127 o1[0] = i0[3];
128 o1[1] = i0[4];
129 o1[2] = i0[5];
130 o1[3] = i1[3];
131 o1[4] = i1[4];
132 o1[5] = i1[5];
133 o1 += 6;
134 o0[0] = i0[0];
135 o0[1] = i0[1];
136 o0[2] = i0[2];
137 o0[3] = i1[0];
138 o0[4] = i1[1];
139 o0[5] = i1[2];
140 o0 += 6;
141 i = i2;
142 }
143 if (bh & 1) {
144 o3[0] = i[9];
145 o3[1] = i[10];
146 o3[2] = i[11];
147 o3 += 3;
148 o2[0] = i[6];
149 o2[1] = i[7];
150 o2[2] = i[8];
151 o2 += 3;
152 o1[0] = i[3];
153 o1[1] = i[4];
154 o1[2] = i[5];
155 o1 += 3;
156 o0[0] = i[0];
157 o0[1] = i[1];
158 o0[2] = i[2];
159 o0 += 3;
160 }
161
162 i0 = (const uint8_t*) ((uintptr_t) i0 + input_reset);
163 i1 = (const uint8_t*) ((uintptr_t) i0 + input_stride);
164 i2 = (const uint8_t*) ((uintptr_t) i1 + input_stride);
165 i3 = (const uint8_t*) ((uintptr_t) i2 + input_stride);
166 o0 = (uint8_t*) ((uintptr_t) o0 + output_reset);
167 o1 = (uint8_t*) ((uintptr_t) o1 + output_reset);
168 o2 = (uint8_t*) ((uintptr_t) o2 + output_reset);
169 o3 = (uint8_t*) ((uintptr_t) o3 + output_reset);
170 block_width = doz(block_width, 4);
171 } while (block_width != 0);
172 }
173