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_reuse_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)18 void xnn_x32_transposec_ukernel__2x2_reuse_multi_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 output_reset = tile_width * output_stride - round_down_po2(block_height, 2) * sizeof(uint32_t);
35
36 const uint32_t* i0 = input;
37 uint32_t* o0 = (uint32_t*) output;
38 uint32_t* o1 = (uint32_t*) ((uintptr_t) o0 + output_stride);
39
40 do {
41 if XNN_UNPREDICTABLE(block_width < 2) {
42 o1 = o0;
43 }
44 size_t bh = block_height;
45 for (; bh >= 2; bh -= 2) {
46 const uint32x2_t v1_0 = vld1_u32(i0); i0 = (uint32_t*) ((uintptr_t) i0 + input_stride);
47 const uint32x2_t v1_1 = vld1_u32(i0); i0 = (uint32_t*) ((uintptr_t) i0 + input_stride);
48
49 const uint32x2x2_t v0_0 = vzip_u32(v1_0, v1_1);
50
51
52 vst1_u32(o1, v0_0.val[1]); o1 = (uint32_t*) ((uintptr_t) o1 + tile_hbytes);
53 vst1_u32(o0, v0_0.val[0]); o0 = (uint32_t*) ((uintptr_t) o0 + tile_hbytes);
54 }
55
56 if (bh != 0) {
57 const uint32x2_t v1_0 = vld1_u32(i0);
58 const uint32x2_t v1_1 = vmov_n_u32(0);
59
60 const uint32x2x2_t v0_0 = vzip_u32(v1_0, v1_1);
61
62
63 uint32x2_t v0_low = v0_0.val[0];
64 uint32x2_t v1_low = v0_0.val[1];
65
66 if (bh & 1) {
67 vst1_lane_u32(o1, v1_low, 0);
68 vst1_lane_u32(o0, v0_low, 0);
69 }
70 }
71
72 i0 = (const uint32_t*) ((uintptr_t) i0 + input_reset);
73 o0 = (uint32_t*) ((uintptr_t) o0 + output_reset);
74 o1 = (uint32_t*) ((uintptr_t) o1 + output_reset);
75 block_width = doz(block_width, tile_width);
76 } while (block_width != 0);
77 }
78