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_x16_transposec_ukernel__4x4_reuse_dec_zip_neon(const uint16_t * input,uint16_t * output,size_t input_stride,size_t output_stride,size_t block_width,size_t block_height)18 void xnn_x16_transposec_ukernel__4x4_reuse_dec_zip_neon(
19 const uint16_t* input,
20 uint16_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(uint16_t));
27 assert(input_stride >= block_width * sizeof(uint16_t));
28
29 const size_t tile_height = 4;
30 const size_t tile_width = 4;
31 const size_t tile_hbytes = tile_height * sizeof(uint16_t);
32 const size_t tile_wbytes = tile_width * sizeof(uint16_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(uint16_t) - tile_hbytes;
35
36 const uint16_t* i0 = input;
37 uint16_t* o = (uint16_t*) ((uintptr_t) output - tile_hbytes);
38 const size_t minus_output_stride = -output_stride;
39
40 do {
41 const size_t rem = min(block_width - 1, 3);
42 const size_t oN_stride = rem * output_stride;
43 const size_t oN_offset = oN_stride + tile_hbytes;
44 size_t bh = block_height;
45 for (; bh >= 4; bh -= 4) {
46 const uint16x4_t v2_0 = vld1_u16(i0); i0 = (uint16_t*) ((uintptr_t) i0 + input_stride);
47 const uint16x4_t v2_1 = vld1_u16(i0); i0 = (uint16_t*) ((uintptr_t) i0 + input_stride);
48 const uint16x4_t v2_2 = vld1_u16(i0); i0 = (uint16_t*) ((uintptr_t) i0 + input_stride);
49 const uint16x4_t v2_3 = vld1_u16(i0); i0 = (uint16_t*) ((uintptr_t) i0 + input_stride);
50
51 const uint16x4x2_t v1_0 = vzip_u16(v2_0, v2_2);
52 const uint16x4x2_t v1_1 = vzip_u16(v2_1, v2_3);
53
54 const uint16x4x2_t v0_0 = vzip_u16(v1_0.val[0], v1_1.val[0]);
55 const uint16x4x2_t v0_1 = vzip_u16(v1_0.val[1], v1_1.val[1]);
56
57 o = (uint16_t*) ((uintptr_t) o + oN_offset);
58 vst1_u16(o, v0_1.val[1]);
59 if XNN_UNPREDICTABLE(block_width > 3) {
60 o = (uint16_t*) ((uintptr_t) o + minus_output_stride);
61 }
62 vst1_u16(o, v0_1.val[0]);
63 if XNN_UNPREDICTABLE(block_width >= 3) {
64 o = (uint16_t*) ((uintptr_t) o + minus_output_stride);
65 }
66 vst1_u16(o, v0_0.val[1]);
67 if XNN_UNPREDICTABLE(block_width > 1) {
68 o = (uint16_t*) ((uintptr_t) o + minus_output_stride);
69 }
70 vst1_u16(o, v0_0.val[0]);
71 }
72 o = (uint16_t*) ((uintptr_t) o + tile_hbytes);
73
74 if (bh != 0) {
75 const uint16x4_t v2_0 = vld1_u16(i0);
76 const uint16_t *i1 = (const uint16_t*) ((uintptr_t) i0 + input_stride);
77 if XNN_UNPREDICTABLE(bh < 2) {
78 i1 = i0;
79 }
80 const uint16x4_t v2_1 = vld1_u16(i1);
81 const uint16_t *i2 = (const uint16_t*) ((uintptr_t) i1 + input_stride);
82 if XNN_UNPREDICTABLE(bh <= 2) {
83 i2 = i1;
84 }
85 const uint16x4_t v2_2 = vld1_u16(i2);
86 const uint16x4_t v2_3 = vmov_n_u16(0);
87
88 const uint16x4x2_t v1_0 = vzip_u16(v2_0, v2_2);
89 const uint16x4x2_t v1_1 = vzip_u16(v2_1, v2_3);
90
91 const uint16x4x2_t v0_0 = vzip_u16(v1_0.val[0], v1_1.val[0]);
92 const uint16x4x2_t v0_1 = vzip_u16(v1_0.val[1], v1_1.val[1]);
93
94 uint16x4_t v0_low = v0_0.val[0];
95 uint16x4_t v1_low = v0_0.val[1];
96 uint16x4_t v2_low = v0_1.val[0];
97 uint16x4_t v3_low = v0_1.val[1];
98
99 if (bh & 2) {
100 o = (uint16_t*) ((uintptr_t) o + oN_stride);
101 vst1_lane_u32((void*) o, vreinterpret_u32_u16(v3_low), 0);
102 if XNN_UNPREDICTABLE(block_width > 3) {
103 o = (uint16_t*) ((uintptr_t) o + minus_output_stride);
104 }
105 vst1_lane_u32((void*) o, vreinterpret_u32_u16(v2_low), 0);
106 if XNN_UNPREDICTABLE(block_width >= 3) {
107 o = (uint16_t*) ((uintptr_t) o + minus_output_stride);
108 }
109 vst1_lane_u32((void*) o, vreinterpret_u32_u16(v1_low), 0);
110 if XNN_UNPREDICTABLE(block_width > 1) {
111 o = (uint16_t*) ((uintptr_t) o + minus_output_stride);
112 }
113 vst1_lane_u32((void*) o, vreinterpret_u32_u16(v0_low), 0); o += 2;
114 v0_low = vext_u16(v0_low, v0_low, 2);
115 v1_low = vext_u16(v1_low, v1_low, 2);
116 v2_low = vext_u16(v2_low, v2_low, 2);
117 v3_low = vext_u16(v3_low, v3_low, 2);
118 }
119 if (bh & 1) {
120 o = (uint16_t*) ((uintptr_t) o + oN_stride);
121 vst1_lane_u16(o, v3_low, 0);
122 if XNN_UNPREDICTABLE(block_width > 3) {
123 o = (uint16_t*) ((uintptr_t) o + minus_output_stride);
124 }
125 vst1_lane_u16(o, v2_low, 0);
126 if XNN_UNPREDICTABLE(block_width >= 3) {
127 o = (uint16_t*) ((uintptr_t) o + minus_output_stride);
128 }
129 vst1_lane_u16(o, v1_low, 0);
130 if XNN_UNPREDICTABLE(block_width > 1) {
131 o = (uint16_t*) ((uintptr_t) o + minus_output_stride);
132 }
133 vst1_lane_u16(o, v0_low, 0);
134 }
135 }
136
137 i0 = (const uint16_t*) ((uintptr_t) i0 + input_reset);
138 o = (uint16_t*) ((uintptr_t) o + output_reset);
139 block_width = doz(block_width, tile_width);
140 } while (block_width != 0);
141 }
142