1 // Auto-generated file. Do not edit!
2 // Template: src/x32-transposec/scalar.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
11 #include <assert.h>
12
13 #include <xnnpack/common.h>
14 #include <xnnpack/math.h>
15 #include <xnnpack/transpose.h>
16
xnn_x16_transposec_ukernel__2x2_scalar_int(const uint16_t * input,uint16_t * output,size_t input_stride,size_t output_stride,size_t block_width,size_t block_height)17 void xnn_x16_transposec_ukernel__2x2_scalar_int(
18 const uint16_t *input,
19 uint16_t * output,
20 size_t input_stride,
21 size_t output_stride,
22 size_t block_width,
23 size_t block_height) XNN_OOB_READS
24 {
25 assert(output_stride >= block_height * sizeof(int16_t));
26 assert(input_stride >= block_width * sizeof(int16_t));
27
28 const size_t tile_height = 2;
29 const size_t tile_width = 2;
30 const size_t tile_wbytes = tile_width * sizeof(int16_t);
31 const size_t input_reset = tile_wbytes - round_down_po2(block_height, tile_height) * input_stride;
32 const size_t output_reset = tile_width * output_stride - round_down_po2(block_height, 2) * sizeof(int16_t);
33 const size_t input_offset = tile_height * input_stride;
34
35 const int16_t* i0 = (const int16_t*) input;
36 const int16_t* i1 = (const int16_t*) ((uintptr_t) i0 + input_stride);
37
38 int16_t* o0 = (int16_t*) output;
39 int16_t* o1 = (int16_t*) ((uintptr_t) o0 + output_stride);
40
41 do {
42 if XNN_UNPREDICTABLE(block_width < 2) {
43 o1 = o0;
44 }
45 size_t bh = block_height;
46 for (; bh >= 2; bh -= 2) {
47 *o1++ = i0[1];
48 *o1++ = i1[1];
49 *o0++ = i0[0];
50 *o0++ = i1[0];
51 i0 = (const int16_t*) ((uintptr_t) i0 + input_offset);
52 i1 = (const int16_t*) ((uintptr_t) i1 + input_offset);
53 }
54 if (bh & 1) {
55 o1[0] = i0[1];
56 o0[0] = i0[0];
57 }
58
59 i0 = (const int16_t*) ((uintptr_t) i0 + input_reset);
60 i1 = (const int16_t*) ((uintptr_t) i0 + input_stride);
61 o0 = (int16_t*) ((uintptr_t) o0 + output_reset);
62 o1 = (int16_t*) ((uintptr_t) o1 + output_reset);
63 block_width = doz(block_width, tile_width);
64 } while (block_width != 0);
65 }
66