1 /*
2  * Copyright (c) 2021 Arm Limited.
3  *
4  * SPDX-License-Identifier: MIT
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a copy
7  * of this software and associated documentation files (the "Software"), to
8  * deal in the Software without restriction, including without limitation the
9  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10  * sell copies of the Software, and to permit persons to whom the Software is
11  * furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22  * IN THE SOFTWARE.
23  */
24 
25 #pragma once
26 
27 #ifdef __aarch64__
28 
29 namespace {
30 
a64_transpose_interleave_16_2x4(uint16_t * out,const uint16_t * in,size_t width,size_t in_stride,size_t height)31 void a64_transpose_interleave_16_2x4(uint16_t *out, const uint16_t *in, size_t width, size_t in_stride, size_t height)
32 {
33     uint16_t *pad_row = reinterpret_cast<uint16_t *>(alloca(width * sizeof(uint16_t)));
34 
35     if (height % 4) {
36         memset(pad_row, 0, width * sizeof(uint16_t));
37     }
38 
39     size_t out_stride = 16 * roundup<size_t>(height, 4) * sizeof(uint16_t);
40 
41     __asm__ __volatile__(
42       "cmp %x[height], #0x8\n"
43       "blt 10f\n"
44       "1:"  // Main row loop: Head
45       "mov x28, %x[in]\n"
46       "mov x27, %x[out]\n"
47       "add x26, x28, %x[in_stride]\n"
48       "add x25, x26, %x[in_stride]\n"
49       "add x24, x25, %x[in_stride]\n"
50       "add x23, x24, %x[in_stride]\n"
51       "add x22, x23, %x[in_stride]\n"
52       "add x21, x22, %x[in_stride]\n"
53       "add x20, x21, %x[in_stride]\n"
54       "add %x[in], x20, %x[in_stride]\n"
55       "sub %x[height], %x[height], #0x8\n"
56       "mov x19, %x[width]\n"
57       "cmp x19, #0x20\n"
58       "blt 3f\n"
59       "2:"  // Main row loop: Unroll column loop
60       "ldr q24, [x28], #0x10\n"
61       "sub x19, x19, #0x20\n"
62       "ldr q4, [x26], #0x10\n"
63       "cmp x19, #0x20\n"
64       "ldr q26, [x25], #0x10\n"
65       "zip1 v2.8h, v24.8h, v26.8h\n"
66       "ldr q3, [x28], #0x10\n"
67       "zip2 v9.8h, v24.8h, v26.8h\n"
68       "ldr q0, [x26], #0x10\n"
69       "ldr q22, [x25], #0x10\n"
70       "zip1 v31.8h, v3.8h, v22.8h\n"
71       "ldr q23, [x28], #0x10\n"
72       "zip2 v25.8h, v3.8h, v22.8h\n"
73       "ldr q22, [x26], #0x10\n"
74       "ldr q5, [x25], #0x10\n"
75       "zip1 v17.8h, v23.8h, v5.8h\n"
76       "ldr q19, [x28], #0x10\n"
77       "zip2 v20.8h, v23.8h, v5.8h\n"
78       "ldr q1, [x26], #0x10\n"
79       "ldr q16, [x25], #0x10\n"
80       "zip1 v15.8h, v19.8h, v16.8h\n"
81       "ldr q8, [x24], #0x10\n"
82       "zip2 v11.8h, v19.8h, v16.8h\n"
83       "ldr q26, [x23], #0x10\n"
84       "ldr q19, [x22], #0x10\n"
85       "zip1 v5.8h, v4.8h, v8.8h\n"
86       "ldr q18, [x24], #0x10\n"
87       "zip2 v6.8h, v4.8h, v8.8h\n"
88       "ldr q7, [x23], #0x10\n"
89       "zip1 v27.8h, v2.8h, v5.8h\n"
90       "ldr q23, [x22], #0x10\n"
91       "zip2 v8.8h, v2.8h, v5.8h\n"
92       "ldr q24, [x21], #0x10\n"
93       "zip1 v12.8h, v9.8h, v6.8h\n"
94       "ldr q13, [x24], #0x10\n"
95       "zip2 v16.8h, v9.8h, v6.8h\n"
96       "ldr q9, [x23], #0x10\n"
97       "zip1 v29.8h, v0.8h, v18.8h\n"
98       "ldr q10, [x22], #0x10\n"
99       "zip1 v14.8h, v31.8h, v29.8h\n"
100       "ldr q4, [x21], #0x10\n"
101       "zip2 v21.8h, v31.8h, v29.8h\n"
102       "ldr q6, [x24], #0x10\n"
103       "zip2 v18.8h, v0.8h, v18.8h\n"
104       "ldr q3, [x23], #0x10\n"
105       "zip1 v0.8h, v25.8h, v18.8h\n"
106       "ldr q31, [x22], #0x10\n"
107       "zip2 v29.8h, v25.8h, v18.8h\n"
108       "ldr q5, [x21], #0x10\n"
109       "zip1 v28.8h, v26.8h, v24.8h\n"
110       "ldr q25, [x20], #0x10\n"
111       "zip2 v26.8h, v26.8h, v24.8h\n"
112       "ldr q30, [x21], #0x10\n"
113       "zip1 v24.8h, v7.8h, v4.8h\n"
114       "zip2 v4.8h, v7.8h, v4.8h\n"
115       "ldr q18, [x20], #0x10\n"
116       "zip1 v7.8h, v19.8h, v25.8h\n"
117       "ldr q2, [x20], #0x10\n"
118       "zip2 v25.8h, v19.8h, v25.8h\n"
119       "zip1 v19.8h, v28.8h, v7.8h\n"
120       "zip2 v7.8h, v28.8h, v7.8h\n"
121       "ldr q28, [x20], #0x10\n"
122       "str q27, [x27, #0x0]\n"
123       "zip1 v27.8h, v26.8h, v25.8h\n"
124       "zip2 v26.8h, v26.8h, v25.8h\n"
125       "str q8, [x27, #0x10]\n"
126       "zip1 v25.8h, v23.8h, v18.8h\n"
127       "str q12, [x27, #0x20]\n"
128       "zip1 v8.8h, v24.8h, v25.8h\n"
129       "str q16, [x27, #0x30]\n"
130       "zip2 v25.8h, v24.8h, v25.8h\n"
131       "str q14, [x27, #0x40]\n"
132       "zip2 v12.8h, v23.8h, v18.8h\n"
133       "str q21, [x27, #0x50]\n"
134       "zip1 v21.8h, v4.8h, v12.8h\n"
135       "str q0, [x27, #0x60]\n"
136       "zip2 v14.8h, v4.8h, v12.8h\n"
137       "str q29, [x27, #0x70]\n"
138       "zip1 v12.8h, v22.8h, v13.8h\n"
139       "str q19, [x27, #0x80]\n"
140       "zip1 v24.8h, v17.8h, v12.8h\n"
141       "str q7, [x27, #0x90]\n"
142       "zip2 v23.8h, v17.8h, v12.8h\n"
143       "str q27, [x27, #0xa0]\n"
144       "zip2 v16.8h, v22.8h, v13.8h\n"
145       "str q26, [x27, #0xb0]\n"
146       "zip1 v19.8h, v20.8h, v16.8h\n"
147       "str q8, [x27, #0xc0]\n"
148       "zip2 v18.8h, v20.8h, v16.8h\n"
149       "str q25, [x27, #0xd0]\n"
150       "zip1 v16.8h, v1.8h, v6.8h\n"
151       "str q21, [x27, #0xe0]\n"
152       "zip1 v21.8h, v15.8h, v16.8h\n"
153       "str q14, [x27, #0xf0]\n"
154       "add x27, x27, %x[out_stride]\n"
155       "zip2 v17.8h, v15.8h, v16.8h\n"
156       "str q24, [x27, #0x0]\n"
157       "zip2 v16.8h, v1.8h, v6.8h\n"
158       "str q23, [x27, #0x10]\n"
159       "zip1 v20.8h, v11.8h, v16.8h\n"
160       "str q19, [x27, #0x20]\n"
161       "zip2 v19.8h, v11.8h, v16.8h\n"
162       "str q18, [x27, #0x30]\n"
163       "zip1 v18.8h, v9.8h, v5.8h\n"
164       "str q21, [x27, #0x40]\n"
165       "zip1 v16.8h, v10.8h, v2.8h\n"
166       "str q17, [x27, #0x50]\n"
167       "zip1 v17.8h, v18.8h, v16.8h\n"
168       "str q20, [x27, #0x60]\n"
169       "zip2 v16.8h, v18.8h, v16.8h\n"
170       "str q19, [x27, #0x70]\n"
171       "zip2 v18.8h, v9.8h, v5.8h\n"
172       "str q17, [x27, #0x80]\n"
173       "zip2 v17.8h, v10.8h, v2.8h\n"
174       "str q16, [x27, #0x90]\n"
175       "zip1 v16.8h, v18.8h, v17.8h\n"
176       "str q16, [x27, #0xa0]\n"
177       "zip2 v16.8h, v18.8h, v17.8h\n"
178       "str q16, [x27, #0xb0]\n"
179       "zip1 v18.8h, v3.8h, v30.8h\n"
180       "zip1 v17.8h, v31.8h, v28.8h\n"
181       "zip1 v16.8h, v18.8h, v17.8h\n"
182       "str q16, [x27, #0xc0]\n"
183       "zip2 v16.8h, v18.8h, v17.8h\n"
184       "str q16, [x27, #0xd0]\n"
185       "zip2 v18.8h, v3.8h, v30.8h\n"
186       "zip2 v17.8h, v31.8h, v28.8h\n"
187       "zip1 v16.8h, v18.8h, v17.8h\n"
188       "str q16, [x27, #0xe0]\n"
189       "zip2 v16.8h, v18.8h, v17.8h\n"
190       "str q16, [x27, #0xf0]\n"
191       "add x27, x27, %x[out_stride]\n"
192       "bge 2b\n"
193       "3:"  // Main row loop: Unroll column loop skip
194       "cmp x19, #0x10\n"
195       "blt 5f\n"
196       "4:"  // Main row loop: Column loop
197       "ldr q17, [x28], #0x10\n"
198       "sub x19, x19, #0x10\n"
199       "ldr q20, [x26], #0x10\n"
200       "cmp x19, #0x10\n"
201       "ldr q16, [x25], #0x10\n"
202       "zip1 v19.8h, v17.8h, v16.8h\n"
203       "ldr q18, [x28], #0x10\n"
204       "zip2 v22.8h, v17.8h, v16.8h\n"
205       "ldr q21, [x26], #0x10\n"
206       "ldr q17, [x25], #0x10\n"
207       "zip1 v0.8h, v18.8h, v17.8h\n"
208       "ldr q16, [x24], #0x10\n"
209       "zip2 v31.8h, v18.8h, v17.8h\n"
210       "ldr q30, [x23], #0x10\n"
211       "ldr q29, [x22], #0x10\n"
212       "zip1 v17.8h, v20.8h, v16.8h\n"
213       "ldr q18, [x24], #0x10\n"
214       "zip2 v16.8h, v20.8h, v16.8h\n"
215       "ldr q28, [x23], #0x10\n"
216       "zip1 v27.8h, v19.8h, v17.8h\n"
217       "ldr q26, [x22], #0x10\n"
218       "zip2 v20.8h, v19.8h, v17.8h\n"
219       "ldr q25, [x21], #0x10\n"
220       "zip1 v19.8h, v22.8h, v16.8h\n"
221       "ldr q24, [x20], #0x10\n"
222       "zip2 v23.8h, v22.8h, v16.8h\n"
223       "ldr q22, [x21], #0x10\n"
224       "zip1 v17.8h, v21.8h, v18.8h\n"
225       "zip2 v18.8h, v21.8h, v18.8h\n"
226       "ldr q21, [x20], #0x10\n"
227       "zip1 v16.8h, v0.8h, v17.8h\n"
228       "str q27, [x27, #0x0]\n"
229       "zip2 v17.8h, v0.8h, v17.8h\n"
230       "str q20, [x27, #0x10]\n"
231       "zip1 v20.8h, v31.8h, v18.8h\n"
232       "str q19, [x27, #0x20]\n"
233       "zip2 v19.8h, v31.8h, v18.8h\n"
234       "str q23, [x27, #0x30]\n"
235       "zip1 v18.8h, v30.8h, v25.8h\n"
236       "str q16, [x27, #0x40]\n"
237       "zip1 v16.8h, v29.8h, v24.8h\n"
238       "str q17, [x27, #0x50]\n"
239       "zip1 v17.8h, v18.8h, v16.8h\n"
240       "str q20, [x27, #0x60]\n"
241       "zip2 v16.8h, v18.8h, v16.8h\n"
242       "str q19, [x27, #0x70]\n"
243       "zip2 v18.8h, v30.8h, v25.8h\n"
244       "str q17, [x27, #0x80]\n"
245       "zip2 v17.8h, v29.8h, v24.8h\n"
246       "str q16, [x27, #0x90]\n"
247       "zip1 v16.8h, v18.8h, v17.8h\n"
248       "str q16, [x27, #0xa0]\n"
249       "zip2 v16.8h, v18.8h, v17.8h\n"
250       "str q16, [x27, #0xb0]\n"
251       "zip1 v18.8h, v28.8h, v22.8h\n"
252       "zip1 v17.8h, v26.8h, v21.8h\n"
253       "zip1 v16.8h, v18.8h, v17.8h\n"
254       "str q16, [x27, #0xc0]\n"
255       "zip2 v16.8h, v18.8h, v17.8h\n"
256       "str q16, [x27, #0xd0]\n"
257       "zip2 v18.8h, v28.8h, v22.8h\n"
258       "zip2 v17.8h, v26.8h, v21.8h\n"
259       "zip1 v16.8h, v18.8h, v17.8h\n"
260       "str q16, [x27, #0xe0]\n"
261       "zip2 v16.8h, v18.8h, v17.8h\n"
262       "str q16, [x27, #0xf0]\n"
263       "add x27, x27, %x[out_stride]\n"
264       "bge 4b\n"
265       "5:"  // Main row loop: Column loop skip
266       "cmp x19, #0x4\n"
267       "blt 7f\n"
268       "6:"  // Main row loop: width 4 loop: loop
269       "ldr d17, [x28], #0x8\n"
270       "sub x19, x19, #0x4\n"
271       "ldr d18, [x26], #0x8\n"
272       "cmp x19, #0x4\n"
273       "ldr d16, [x25], #0x8\n"
274       "zip1 v17.8h, v17.8h, v16.8h\n"
275       "ldr d16, [x24], #0x8\n"
276       "ldr d21, [x23], #0x8\n"
277       "zip1 v16.8h, v18.8h, v16.8h\n"
278       "ldr d20, [x22], #0x8\n"
279       "ldr d19, [x21], #0x8\n"
280       "zip1 v18.8h, v17.8h, v16.8h\n"
281       "zip2 v17.8h, v17.8h, v16.8h\n"
282       "ldr d16, [x20], #0x8\n"
283       "str q18, [x27, #0x0]\n"
284       "zip1 v18.8h, v21.8h, v19.8h\n"
285       "str q17, [x27, #0x10]\n"
286       "zip1 v17.8h, v20.8h, v16.8h\n"
287       "zip1 v16.8h, v18.8h, v17.8h\n"
288       "str q16, [x27, #0x80]\n"
289       "zip2 v16.8h, v18.8h, v17.8h\n"
290       "str q16, [x27, #0x90]\n"
291       "add x27, x27, #0x20\n"
292       "bge 6b\n"
293       "7:"  // Main row loop: width 4 loop: skip
294       "cmp x19, #0x1\n"
295       "blt 9f\n"
296       "8:"  // Main row loop: width 1 loop: loop
297       "ldr h18, [x28], #0x2\n"
298       "sub x19, x19, #0x1\n"
299       "ldr h17, [x26], #0x2\n"
300       "cmp x19, #0x1\n"
301       "ldr h16, [x25], #0x2\n"
302       "zip1 v18.8h, v18.8h, v16.8h\n"
303       "ldr h16, [x24], #0x2\n"
304       "ldr h20, [x23], #0x2\n"
305       "zip1 v16.8h, v17.8h, v16.8h\n"
306       "ldr h19, [x22], #0x2\n"
307       "ldr h17, [x21], #0x2\n"
308       "zip1 v18.8h, v18.8h, v16.8h\n"
309       "ldr h16, [x20], #0x2\n"
310       "zip1 v17.8h, v20.8h, v17.8h\n"
311       "str d18, [x27, #0x0]\n"
312       "zip1 v16.8h, v19.8h, v16.8h\n"
313       "zip1 v16.8h, v17.8h, v16.8h\n"
314       "str d16, [x27, #0x80]\n"
315       "add x27, x27, #0x8\n"
316       "bge 8b\n"
317       "9:"  // Main row loop: width 1 loop: skip
318       "add %x[out], %x[out], #0x100\n"
319       "cmp %x[height], #0x8\n"
320       "bge 1b\n"
321       "cbz %x[height], 20f\n"
322       "10:"  // Main loop skip
323 
324       "11:"  // Tail row loop: Head
325       "mov x28, %x[in]\n"
326       "mov x27, %x[out]\n"
327       "add x26, x28, %x[in_stride]\n"
328       "add x25, x26, %x[in_stride]\n"
329       "add x24, x25, %x[in_stride]\n"
330       "add %x[in], x24, %x[in_stride]\n"
331       "cmp %x[height], #0x3\n"
332       "csel x24, x24, %x[pad_row], GT\n"
333       "csel x25, x25, %x[pad_row], GE\n"
334       "cmp %x[height], #0x1\n"
335       "csel x26, x26, %x[pad_row], GT\n"
336       "sub %x[height], %x[height], #0x4\n"
337       "mov x19, %x[width]\n"
338       "cmp x19, #0x20\n"
339       "blt 13f\n"
340       "12:"  // Tail row loop: Unroll column loop
341       "ldr q17, [x28], #0x10\n"
342       "sub x19, x19, #0x20\n"
343       "ldr q19, [x26], #0x10\n"
344       "cmp x19, #0x20\n"
345       "ldr q16, [x25], #0x10\n"
346       "zip1 v20.8h, v17.8h, v16.8h\n"
347       "ldr q18, [x28], #0x10\n"
348       "zip2 v0.8h, v17.8h, v16.8h\n"
349       "ldr q31, [x26], #0x10\n"
350       "ldr q16, [x25], #0x10\n"
351       "zip1 v30.8h, v18.8h, v16.8h\n"
352       "ldr q17, [x28], #0x10\n"
353       "zip2 v29.8h, v18.8h, v16.8h\n"
354       "ldr q28, [x26], #0x10\n"
355       "ldr q16, [x25], #0x10\n"
356       "zip1 v27.8h, v17.8h, v16.8h\n"
357       "ldr q18, [x28], #0x10\n"
358       "zip2 v26.8h, v17.8h, v16.8h\n"
359       "ldr q25, [x26], #0x10\n"
360       "ldr q17, [x25], #0x10\n"
361       "zip1 v24.8h, v18.8h, v17.8h\n"
362       "ldr q16, [x24], #0x10\n"
363       "zip2 v23.8h, v18.8h, v17.8h\n"
364       "ldr q22, [x24], #0x10\n"
365       "zip1 v17.8h, v19.8h, v16.8h\n"
366       "zip2 v19.8h, v19.8h, v16.8h\n"
367       "ldr q21, [x24], #0x10\n"
368       "zip1 v16.8h, v20.8h, v17.8h\n"
369       "zip2 v17.8h, v20.8h, v17.8h\n"
370       "ldr q20, [x24], #0x10\n"
371       "zip1 v18.8h, v0.8h, v19.8h\n"
372       "zip2 v19.8h, v0.8h, v19.8h\n"
373       "str q16, [x27, #0x0]\n"
374       "zip1 v16.8h, v31.8h, v22.8h\n"
375       "str q17, [x27, #0x10]\n"
376       "zip1 v17.8h, v30.8h, v16.8h\n"
377       "str q18, [x27, #0x20]\n"
378       "zip2 v18.8h, v30.8h, v16.8h\n"
379       "str q19, [x27, #0x30]\n"
380       "zip2 v16.8h, v31.8h, v22.8h\n"
381       "str q17, [x27, #0x40]\n"
382       "zip1 v17.8h, v29.8h, v16.8h\n"
383       "str q18, [x27, #0x50]\n"
384       "zip2 v16.8h, v29.8h, v16.8h\n"
385       "str q17, [x27, #0x60]\n"
386       "zip1 v17.8h, v28.8h, v21.8h\n"
387       "str q16, [x27, #0x70]\n"
388       "add x27, x27, %x[out_stride]\n"
389       "zip1 v16.8h, v27.8h, v17.8h\n"
390       "str q16, [x27, #0x0]\n"
391       "zip2 v16.8h, v27.8h, v17.8h\n"
392       "zip2 v17.8h, v28.8h, v21.8h\n"
393       "str q16, [x27, #0x10]\n"
394       "zip1 v16.8h, v26.8h, v17.8h\n"
395       "str q16, [x27, #0x20]\n"
396       "zip2 v16.8h, v26.8h, v17.8h\n"
397       "str q16, [x27, #0x30]\n"
398       "zip1 v17.8h, v25.8h, v20.8h\n"
399       "zip1 v16.8h, v24.8h, v17.8h\n"
400       "str q16, [x27, #0x40]\n"
401       "zip2 v16.8h, v24.8h, v17.8h\n"
402       "str q16, [x27, #0x50]\n"
403       "zip2 v17.8h, v25.8h, v20.8h\n"
404       "zip1 v16.8h, v23.8h, v17.8h\n"
405       "str q16, [x27, #0x60]\n"
406       "zip2 v16.8h, v23.8h, v17.8h\n"
407       "str q16, [x27, #0x70]\n"
408       "add x27, x27, %x[out_stride]\n"
409       "bge 12b\n"
410       "13:"  // Tail row loop: Unroll column loop skip
411       "cmp x19, #0x10\n"
412       "blt 15f\n"
413       "14:"  // Tail row loop: Column loop
414       "ldr q17, [x28], #0x10\n"
415       "sub x19, x19, #0x10\n"
416       "ldr q25, [x26], #0x10\n"
417       "cmp x19, #0x10\n"
418       "ldr q16, [x25], #0x10\n"
419       "zip1 v24.8h, v17.8h, v16.8h\n"
420       "ldr q18, [x28], #0x10\n"
421       "zip2 v23.8h, v17.8h, v16.8h\n"
422       "ldr q22, [x26], #0x10\n"
423       "ldr q17, [x25], #0x10\n"
424       "zip1 v21.8h, v18.8h, v17.8h\n"
425       "ldr q16, [x24], #0x10\n"
426       "zip2 v20.8h, v18.8h, v17.8h\n"
427       "ldr q19, [x24], #0x10\n"
428       "zip1 v18.8h, v25.8h, v16.8h\n"
429       "zip2 v17.8h, v25.8h, v16.8h\n"
430       "zip1 v16.8h, v24.8h, v18.8h\n"
431       "str q16, [x27, #0x0]\n"
432       "zip2 v16.8h, v24.8h, v18.8h\n"
433       "str q16, [x27, #0x10]\n"
434       "zip1 v16.8h, v23.8h, v17.8h\n"
435       "str q16, [x27, #0x20]\n"
436       "zip2 v16.8h, v23.8h, v17.8h\n"
437       "str q16, [x27, #0x30]\n"
438       "zip1 v17.8h, v22.8h, v19.8h\n"
439       "zip1 v16.8h, v21.8h, v17.8h\n"
440       "str q16, [x27, #0x40]\n"
441       "zip2 v16.8h, v21.8h, v17.8h\n"
442       "str q16, [x27, #0x50]\n"
443       "zip2 v17.8h, v22.8h, v19.8h\n"
444       "zip1 v16.8h, v20.8h, v17.8h\n"
445       "str q16, [x27, #0x60]\n"
446       "zip2 v16.8h, v20.8h, v17.8h\n"
447       "str q16, [x27, #0x70]\n"
448       "add x27, x27, %x[out_stride]\n"
449       "bge 14b\n"
450       "15:"  // Tail row loop: Column loop skip
451       "cmp x19, #0x4\n"
452       "blt 17f\n"
453       "16:"  // Tail row loop: width 4 loop: loop
454       "ldr d18, [x28], #0x8\n"
455       "sub x19, x19, #0x4\n"
456       "ldr d17, [x26], #0x8\n"
457       "cmp x19, #0x4\n"
458       "ldr d16, [x25], #0x8\n"
459       "zip1 v18.8h, v18.8h, v16.8h\n"
460       "ldr d16, [x24], #0x8\n"
461       "zip1 v17.8h, v17.8h, v16.8h\n"
462       "zip1 v16.8h, v18.8h, v17.8h\n"
463       "str q16, [x27, #0x0]\n"
464       "zip2 v16.8h, v18.8h, v17.8h\n"
465       "str q16, [x27, #0x10]\n"
466       "add x27, x27, #0x20\n"
467       "bge 16b\n"
468       "17:"  // Tail row loop: width 4 loop: skip
469       "cmp x19, #0x1\n"
470       "blt 19f\n"
471       "18:"  // Tail row loop: width 1 loop: loop
472       "ldr h17, [x28], #0x2\n"
473       "sub x19, x19, #0x1\n"
474       "ldr h18, [x26], #0x2\n"
475       "cmp x19, #0x1\n"
476       "ldr h16, [x25], #0x2\n"
477       "zip1 v17.8h, v17.8h, v16.8h\n"
478       "ldr h16, [x24], #0x2\n"
479       "zip1 v16.8h, v18.8h, v16.8h\n"
480       "zip1 v16.8h, v17.8h, v16.8h\n"
481       "str d16, [x27, #0x0]\n"
482       "add x27, x27, #0x8\n"
483       "bge 18b\n"
484       "19:"  // Tail row loop: width 1 loop: skip
485       "add %x[out], %x[out], #0x80\n"
486       "cmp %x[height], #0x1\n"
487       "bge 11b\n"
488       "20:"  // Done
489 
490       : [height] "+&r" (height), [in] "+&r" (in), [out] "+&r" (out)
491       : [in_stride] "r" (in_stride), [out_stride] "r" (out_stride), [pad_row] "r" (pad_row), [width] "r" (width)
492       : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", "x19", "x20", "x21", "x22", "x23", "x24", "x25", "x26", "x27", "x28"
493     );
494 }
495 
496 } // anonymous namespace
497 
498 template<>
Transform(bfloat16 * out,const bfloat16 * in,int stride,int x0,int xmax,int k0,int kmax)499 void Transform<16, 4, true, VLType::None>(
500     bfloat16 *out, const bfloat16 *in, int stride, int x0, int xmax, int k0, int kmax)
501 {
502     a64_transpose_interleave_16_2x4(
503         reinterpret_cast<uint16_t *>(out),
504         reinterpret_cast<const uint16_t *>(in + k0 * stride + x0),
505         (xmax-x0) * sizeof(bfloat16) / 2,
506         stride * sizeof(bfloat16),
507         (kmax-k0)
508     );
509 }
510 
511 #endif
512