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_fp32bf16(bfloat16 * out,const float * in,size_t width,size_t in_stride,size_t height)31 void a64_transpose_interleave_16_2x4_fp32bf16(bfloat16 *out, const float *in, size_t width, size_t in_stride, size_t height)
32 {
33     float *pad_row = reinterpret_cast<float *>(alloca(width * sizeof(float)));
34 
35     if (height % 4) {
36         memset(pad_row, 0, width * sizeof(float));
37     }
38 
39     size_t out_stride = 16 * roundup<size_t>(height, 4) * sizeof(bfloat16);
40 
41     __asm__ __volatile__(
42       "cmp %x[height], #0x8\n"
43       "blt 8f\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, #0x10\n"
58       "blt 3f\n"
59       "2:"  // Main row loop: Column loop
60       "ldr q17, [x28], #0x10\n"
61       "sub x19, x19, #0x10\n"
62       "ldr q19, [x26], #0x10\n"
63       "cmp x19, #0x10\n"
64       "ldr q16, [x25], #0x10\n"
65       "zip1 v24.4s, v17.4s, v16.4s\n"
66       "ldr q18, [x28], #0x10\n"
67       "zip2 v23.4s, v17.4s, v16.4s\n"
68       "ldr q22, [x26], #0x10\n"
69       "ldr q16, [x25], #0x10\n"
70       "zip1 v21.4s, v18.4s, v16.4s\n"
71       "ldr q17, [x28], #0x10\n"
72       "zip2 v14.4s, v18.4s, v16.4s\n"
73       "ldr q13, [x26], #0x10\n"
74       "ldr q16, [x25], #0x10\n"
75       "zip1 v12.4s, v17.4s, v16.4s\n"
76       "ldr q18, [x28], #0x10\n"
77       "zip2 v11.4s, v17.4s, v16.4s\n"
78       "ldr q10, [x26], #0x10\n"
79       "ldr q17, [x25], #0x10\n"
80       "zip1 v9.4s, v18.4s, v17.4s\n"
81       "ldr q16, [x24], #0x10\n"
82       "zip2 v8.4s, v18.4s, v17.4s\n"
83       "ldr q7, [x23], #0x10\n"
84       "ldr q6, [x22], #0x10\n"
85       "zip1 v17.4s, v19.4s, v16.4s\n"
86       "ldr q20, [x24], #0x10\n"
87       "zip2 v19.4s, v19.4s, v16.4s\n"
88       "ldr q5, [x23], #0x10\n"
89       "zip1 v16.4s, v24.4s, v17.4s\n"
90       "ldr q4, [x22], #0x10\n"
91       ".inst 0x0ea16a03  // bfcvtn v3.4h, v16.4s\n"
92       "ldr q2, [x21], #0x10\n"
93       "zip2 v17.4s, v24.4s, v17.4s\n"
94       "ldr q1, [x24], #0x10\n"
95       "zip1 v16.4s, v23.4s, v19.4s\n"
96       "ldr q0, [x23], #0x10\n"
97       ".inst 0x4ea16a23  // bfcvtn2 v3.8h, v17.4s\n"
98       "ldr q31, [x22], #0x10\n"
99       ".inst 0x0ea16a12  // bfcvtn v18.4h, v16.4s\n"
100       "ldr q30, [x21], #0x10\n"
101       "zip2 v16.4s, v23.4s, v19.4s\n"
102       "ldr q29, [x24], #0x10\n"
103       "zip1 v17.4s, v22.4s, v20.4s\n"
104       "ldr q28, [x23], #0x10\n"
105       ".inst 0x4ea16a12  // bfcvtn2 v18.8h, v16.4s\n"
106       "ldr q27, [x22], #0x10\n"
107       "zip1 v16.4s, v21.4s, v17.4s\n"
108       "ldr q26, [x21], #0x10\n"
109       ".inst 0x0ea16a19  // bfcvtn v25.4h, v16.4s\n"
110       "ldr q24, [x20], #0x10\n"
111       "zip2 v16.4s, v21.4s, v17.4s\n"
112       "ldr q23, [x21], #0x10\n"
113       ".inst 0x4ea16a19  // bfcvtn2 v25.8h, v16.4s\n"
114       "zip2 v17.4s, v22.4s, v20.4s\n"
115       "ldr q22, [x20], #0x10\n"
116       "zip1 v16.4s, v14.4s, v17.4s\n"
117       "ldr q21, [x20], #0x10\n"
118       ".inst 0x0ea16a13  // bfcvtn v19.4h, v16.4s\n"
119       "zip2 v16.4s, v14.4s, v17.4s\n"
120       "ldr q20, [x20], #0x10\n"
121       ".inst 0x4ea16a13  // bfcvtn2 v19.8h, v16.4s\n"
122       "zip1 v17.4s, v13.4s, v1.4s\n"
123       "str q3, [x27, #0x0]\n"
124       "zip1 v16.4s, v12.4s, v17.4s\n"
125       "str q18, [x27, #0x10]\n"
126       ".inst 0x0ea16a12  // bfcvtn v18.4h, v16.4s\n"
127       "str q25, [x27, #0x20]\n"
128       "zip2 v16.4s, v12.4s, v17.4s\n"
129       "str q19, [x27, #0x30]\n"
130       "zip2 v17.4s, v13.4s, v1.4s\n"
131       ".inst 0x4ea16a12  // bfcvtn2 v18.8h, v16.4s\n"
132       "str q18, [x27, #0x40]\n"
133       "zip1 v16.4s, v11.4s, v17.4s\n"
134       "zip2 v19.4s, v11.4s, v17.4s\n"
135       ".inst 0x0ea16a12  // bfcvtn v18.4h, v16.4s\n"
136       "zip1 v17.4s, v10.4s, v29.4s\n"
137       "zip1 v16.4s, v9.4s, v17.4s\n"
138       ".inst 0x4ea16a72  // bfcvtn2 v18.8h, v19.4s\n"
139       "str q18, [x27, #0x50]\n"
140       ".inst 0x0ea16a13  // bfcvtn v19.4h, v16.4s\n"
141       "zip2 v18.4s, v9.4s, v17.4s\n"
142       "zip2 v17.4s, v10.4s, v29.4s\n"
143       "zip1 v16.4s, v8.4s, v17.4s\n"
144       ".inst 0x4ea16a53  // bfcvtn2 v19.8h, v18.4s\n"
145       "str q19, [x27, #0x60]\n"
146       ".inst 0x0ea16a13  // bfcvtn v19.4h, v16.4s\n"
147       "zip2 v16.4s, v8.4s, v17.4s\n"
148       "zip1 v18.4s, v7.4s, v2.4s\n"
149       "zip1 v17.4s, v6.4s, v24.4s\n"
150       ".inst 0x4ea16a13  // bfcvtn2 v19.8h, v16.4s\n"
151       "str q19, [x27, #0x70]\n"
152       "zip1 v16.4s, v18.4s, v17.4s\n"
153       "zip2 v19.4s, v18.4s, v17.4s\n"
154       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
155       "zip2 v18.4s, v7.4s, v2.4s\n"
156       "zip2 v17.4s, v6.4s, v24.4s\n"
157       ".inst 0x4ea16a70  // bfcvtn2 v16.8h, v19.4s\n"
158       "str q16, [x27, #0x80]\n"
159       "zip1 v16.4s, v18.4s, v17.4s\n"
160       "zip2 v19.4s, v18.4s, v17.4s\n"
161       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
162       "zip1 v18.4s, v5.4s, v30.4s\n"
163       "zip1 v17.4s, v4.4s, v22.4s\n"
164       ".inst 0x4ea16a70  // bfcvtn2 v16.8h, v19.4s\n"
165       "str q16, [x27, #0x90]\n"
166       "zip1 v16.4s, v18.4s, v17.4s\n"
167       "zip2 v19.4s, v18.4s, v17.4s\n"
168       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
169       "zip2 v18.4s, v5.4s, v30.4s\n"
170       "zip2 v17.4s, v4.4s, v22.4s\n"
171       ".inst 0x4ea16a70  // bfcvtn2 v16.8h, v19.4s\n"
172       "str q16, [x27, #0xa0]\n"
173       "zip1 v16.4s, v18.4s, v17.4s\n"
174       "zip2 v19.4s, v18.4s, v17.4s\n"
175       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
176       "zip1 v18.4s, v0.4s, v26.4s\n"
177       "zip1 v17.4s, v31.4s, v21.4s\n"
178       ".inst 0x4ea16a70  // bfcvtn2 v16.8h, v19.4s\n"
179       "str q16, [x27, #0xb0]\n"
180       "zip1 v16.4s, v18.4s, v17.4s\n"
181       "zip2 v19.4s, v18.4s, v17.4s\n"
182       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
183       "zip2 v18.4s, v0.4s, v26.4s\n"
184       "zip2 v17.4s, v31.4s, v21.4s\n"
185       ".inst 0x4ea16a70  // bfcvtn2 v16.8h, v19.4s\n"
186       "str q16, [x27, #0xc0]\n"
187       "zip1 v16.4s, v18.4s, v17.4s\n"
188       "zip2 v19.4s, v18.4s, v17.4s\n"
189       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
190       "zip1 v18.4s, v28.4s, v23.4s\n"
191       "zip1 v17.4s, v27.4s, v20.4s\n"
192       ".inst 0x4ea16a70  // bfcvtn2 v16.8h, v19.4s\n"
193       "str q16, [x27, #0xd0]\n"
194       "zip1 v16.4s, v18.4s, v17.4s\n"
195       "zip2 v19.4s, v18.4s, v17.4s\n"
196       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
197       "zip2 v18.4s, v28.4s, v23.4s\n"
198       "zip2 v17.4s, v27.4s, v20.4s\n"
199       ".inst 0x4ea16a70  // bfcvtn2 v16.8h, v19.4s\n"
200       "str q16, [x27, #0xe0]\n"
201       "zip1 v16.4s, v18.4s, v17.4s\n"
202       "zip2 v17.4s, v18.4s, v17.4s\n"
203       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
204       ".inst 0x4ea16a30  // bfcvtn2 v16.8h, v17.4s\n"
205       "str q16, [x27, #0xf0]\n"
206       "add x27, x27, %x[out_stride]\n"
207       "bge 2b\n"
208       "3:"  // Main row loop: Column loop skip
209       "cmp x19, #0x4\n"
210       "blt 5f\n"
211       "4:"  // Main row loop: width 4 loop: loop
212       "ldr q20, [x28], #0x10\n"
213       "sub x19, x19, #0x4\n"
214       "ldr q18, [x26], #0x10\n"
215       "cmp x19, #0x4\n"
216       "ldr q17, [x25], #0x10\n"
217       "zip1 v19.4s, v20.4s, v17.4s\n"
218       "ldr q16, [x24], #0x10\n"
219       "zip2 v25.4s, v20.4s, v17.4s\n"
220       "ldr q24, [x23], #0x10\n"
221       "ldr q23, [x22], #0x10\n"
222       "zip1 v17.4s, v18.4s, v16.4s\n"
223       "ldr q22, [x21], #0x10\n"
224       "zip2 v21.4s, v18.4s, v16.4s\n"
225       "ldr q20, [x20], #0x10\n"
226       "zip1 v16.4s, v19.4s, v17.4s\n"
227       ".inst 0x0ea16a12  // bfcvtn v18.4h, v16.4s\n"
228       "zip2 v17.4s, v19.4s, v17.4s\n"
229       "zip1 v16.4s, v25.4s, v21.4s\n"
230       ".inst 0x4ea16a32  // bfcvtn2 v18.8h, v17.4s\n"
231       "str q18, [x27, #0x0]\n"
232       ".inst 0x0ea16a13  // bfcvtn v19.4h, v16.4s\n"
233       "zip2 v16.4s, v25.4s, v21.4s\n"
234       "zip1 v18.4s, v24.4s, v22.4s\n"
235       "zip1 v17.4s, v23.4s, v20.4s\n"
236       ".inst 0x4ea16a13  // bfcvtn2 v19.8h, v16.4s\n"
237       "str q19, [x27, #0x10]\n"
238       "zip1 v16.4s, v18.4s, v17.4s\n"
239       "zip2 v19.4s, v18.4s, v17.4s\n"
240       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
241       "zip2 v18.4s, v24.4s, v22.4s\n"
242       "zip2 v17.4s, v23.4s, v20.4s\n"
243       ".inst 0x4ea16a70  // bfcvtn2 v16.8h, v19.4s\n"
244       "str q16, [x27, #0x80]\n"
245       "zip1 v16.4s, v18.4s, v17.4s\n"
246       "zip2 v17.4s, v18.4s, v17.4s\n"
247       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
248       ".inst 0x4ea16a30  // bfcvtn2 v16.8h, v17.4s\n"
249       "str q16, [x27, #0x90]\n"
250       "add x27, x27, #0x20\n"
251       "bge 4b\n"
252       "5:"  // Main row loop: width 4 loop: skip
253       "cmp x19, #0x1\n"
254       "blt 7f\n"
255       "6:"  // Main row loop: width 1 loop: loop
256       "ldr s18, [x28], #0x4\n"
257       "sub x19, x19, #0x1\n"
258       "ldr s17, [x26], #0x4\n"
259       "cmp x19, #0x1\n"
260       "ldr s16, [x25], #0x4\n"
261       "zip1 v18.4s, v18.4s, v16.4s\n"
262       "ldr s16, [x24], #0x4\n"
263       "ldr s20, [x23], #0x4\n"
264       "zip1 v16.4s, v17.4s, v16.4s\n"
265       "ldr s19, [x22], #0x4\n"
266       "ldr s17, [x21], #0x4\n"
267       "zip1 v16.4s, v18.4s, v16.4s\n"
268       "ldr s18, [x20], #0x4\n"
269       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
270       "zip1 v17.4s, v20.4s, v17.4s\n"
271       "str d16, [x27, #0x0]\n"
272       "zip1 v16.4s, v19.4s, v18.4s\n"
273       "zip1 v16.4s, v17.4s, v16.4s\n"
274       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
275       "str d16, [x27, #0x80]\n"
276       "add x27, x27, #0x8\n"
277       "bge 6b\n"
278       "7:"  // Main row loop: width 1 loop: skip
279       "add %x[out], %x[out], #0x100\n"
280       "cmp %x[height], #0x8\n"
281       "bge 1b\n"
282       "cbz %x[height], 16f\n"
283       "8:"  // Main loop skip
284 
285       "9:"  // Tail row loop: Head
286       "mov x28, %x[in]\n"
287       "mov x27, %x[out]\n"
288       "add x26, x28, %x[in_stride]\n"
289       "add x25, x26, %x[in_stride]\n"
290       "add x24, x25, %x[in_stride]\n"
291       "add %x[in], x24, %x[in_stride]\n"
292       "cmp %x[height], #0x3\n"
293       "csel x24, x24, %x[pad_row], GT\n"
294       "csel x25, x25, %x[pad_row], GE\n"
295       "cmp %x[height], #0x1\n"
296       "csel x26, x26, %x[pad_row], GT\n"
297       "sub %x[height], %x[height], #0x4\n"
298       "mov x19, %x[width]\n"
299       "cmp x19, #0x10\n"
300       "blt 11f\n"
301       "10:"  // Tail row loop: Column loop
302       "ldr q17, [x28], #0x10\n"
303       "sub x19, x19, #0x10\n"
304       "ldr q20, [x26], #0x10\n"
305       "cmp x19, #0x10\n"
306       "ldr q16, [x25], #0x10\n"
307       "zip1 v19.4s, v17.4s, v16.4s\n"
308       "ldr q18, [x28], #0x10\n"
309       "zip2 v1.4s, v17.4s, v16.4s\n"
310       "ldr q0, [x26], #0x10\n"
311       "ldr q16, [x25], #0x10\n"
312       "zip1 v31.4s, v18.4s, v16.4s\n"
313       "ldr q17, [x28], #0x10\n"
314       "zip2 v30.4s, v18.4s, v16.4s\n"
315       "ldr q29, [x26], #0x10\n"
316       "ldr q16, [x25], #0x10\n"
317       "zip1 v28.4s, v17.4s, v16.4s\n"
318       "ldr q18, [x28], #0x10\n"
319       "zip2 v27.4s, v17.4s, v16.4s\n"
320       "ldr q26, [x26], #0x10\n"
321       "ldr q17, [x25], #0x10\n"
322       "zip1 v25.4s, v18.4s, v17.4s\n"
323       "ldr q16, [x24], #0x10\n"
324       "zip2 v24.4s, v18.4s, v17.4s\n"
325       "ldr q23, [x24], #0x10\n"
326       "zip1 v17.4s, v20.4s, v16.4s\n"
327       "zip2 v22.4s, v20.4s, v16.4s\n"
328       "ldr q21, [x24], #0x10\n"
329       "zip1 v16.4s, v19.4s, v17.4s\n"
330       "zip2 v19.4s, v19.4s, v17.4s\n"
331       "ldr q20, [x24], #0x10\n"
332       ".inst 0x0ea16a11  // bfcvtn v17.4h, v16.4s\n"
333       "zip1 v16.4s, v1.4s, v22.4s\n"
334       ".inst 0x0ea16a12  // bfcvtn v18.4h, v16.4s\n"
335       "zip2 v16.4s, v1.4s, v22.4s\n"
336       ".inst 0x4ea16a71  // bfcvtn2 v17.8h, v19.4s\n"
337       "str q17, [x27, #0x0]\n"
338       ".inst 0x4ea16a12  // bfcvtn2 v18.8h, v16.4s\n"
339       "zip1 v17.4s, v0.4s, v23.4s\n"
340       "str q18, [x27, #0x10]\n"
341       "zip1 v16.4s, v31.4s, v17.4s\n"
342       "zip2 v19.4s, v31.4s, v17.4s\n"
343       ".inst 0x0ea16a12  // bfcvtn v18.4h, v16.4s\n"
344       "zip2 v17.4s, v0.4s, v23.4s\n"
345       "zip1 v16.4s, v30.4s, v17.4s\n"
346       ".inst 0x4ea16a72  // bfcvtn2 v18.8h, v19.4s\n"
347       "str q18, [x27, #0x20]\n"
348       ".inst 0x0ea16a13  // bfcvtn v19.4h, v16.4s\n"
349       "zip2 v18.4s, v30.4s, v17.4s\n"
350       "zip1 v17.4s, v29.4s, v21.4s\n"
351       "zip1 v16.4s, v28.4s, v17.4s\n"
352       ".inst 0x4ea16a53  // bfcvtn2 v19.8h, v18.4s\n"
353       "str q19, [x27, #0x30]\n"
354       ".inst 0x0ea16a13  // bfcvtn v19.4h, v16.4s\n"
355       "zip2 v18.4s, v28.4s, v17.4s\n"
356       "zip2 v17.4s, v29.4s, v21.4s\n"
357       "zip1 v16.4s, v27.4s, v17.4s\n"
358       ".inst 0x4ea16a53  // bfcvtn2 v19.8h, v18.4s\n"
359       "str q19, [x27, #0x40]\n"
360       ".inst 0x0ea16a13  // bfcvtn v19.4h, v16.4s\n"
361       "zip2 v18.4s, v27.4s, v17.4s\n"
362       "zip1 v17.4s, v26.4s, v20.4s\n"
363       "zip1 v16.4s, v25.4s, v17.4s\n"
364       ".inst 0x4ea16a53  // bfcvtn2 v19.8h, v18.4s\n"
365       "str q19, [x27, #0x50]\n"
366       ".inst 0x0ea16a13  // bfcvtn v19.4h, v16.4s\n"
367       "zip2 v17.4s, v25.4s, v17.4s\n"
368       "zip2 v18.4s, v26.4s, v20.4s\n"
369       "zip1 v16.4s, v24.4s, v18.4s\n"
370       ".inst 0x4ea16a33  // bfcvtn2 v19.8h, v17.4s\n"
371       "str q19, [x27, #0x60]\n"
372       ".inst 0x0ea16a11  // bfcvtn v17.4h, v16.4s\n"
373       "zip2 v16.4s, v24.4s, v18.4s\n"
374       ".inst 0x4ea16a11  // bfcvtn2 v17.8h, v16.4s\n"
375       "str q17, [x27, #0x70]\n"
376       "add x27, x27, %x[out_stride]\n"
377       "bge 10b\n"
378       "11:"  // Tail row loop: Column loop skip
379       "cmp x19, #0x4\n"
380       "blt 13f\n"
381       "12:"  // Tail row loop: width 4 loop: loop
382       "ldr q19, [x28], #0x10\n"
383       "sub x19, x19, #0x4\n"
384       "ldr q18, [x26], #0x10\n"
385       "cmp x19, #0x4\n"
386       "ldr q17, [x25], #0x10\n"
387       "zip1 v21.4s, v19.4s, v17.4s\n"
388       "ldr q16, [x24], #0x10\n"
389       "zip2 v20.4s, v19.4s, v17.4s\n"
390       "zip1 v17.4s, v18.4s, v16.4s\n"
391       "zip2 v19.4s, v18.4s, v16.4s\n"
392       "zip1 v16.4s, v21.4s, v17.4s\n"
393       ".inst 0x0ea16a12  // bfcvtn v18.4h, v16.4s\n"
394       "zip2 v17.4s, v21.4s, v17.4s\n"
395       "zip1 v16.4s, v20.4s, v19.4s\n"
396       ".inst 0x4ea16a32  // bfcvtn2 v18.8h, v17.4s\n"
397       "str q18, [x27, #0x0]\n"
398       ".inst 0x0ea16a11  // bfcvtn v17.4h, v16.4s\n"
399       "zip2 v16.4s, v20.4s, v19.4s\n"
400       ".inst 0x4ea16a11  // bfcvtn2 v17.8h, v16.4s\n"
401       "str q17, [x27, #0x10]\n"
402       "add x27, x27, #0x20\n"
403       "bge 12b\n"
404       "13:"  // Tail row loop: width 4 loop: skip
405       "cmp x19, #0x1\n"
406       "blt 15f\n"
407       "14:"  // Tail row loop: width 1 loop: loop
408       "ldr s17, [x28], #0x4\n"
409       "sub x19, x19, #0x1\n"
410       "ldr s18, [x26], #0x4\n"
411       "cmp x19, #0x1\n"
412       "ldr s16, [x25], #0x4\n"
413       "zip1 v17.4s, v17.4s, v16.4s\n"
414       "ldr s16, [x24], #0x4\n"
415       "zip1 v16.4s, v18.4s, v16.4s\n"
416       "zip1 v16.4s, v17.4s, v16.4s\n"
417       ".inst 0x0ea16a10  // bfcvtn v16.4h, v16.4s\n"
418       "str d16, [x27, #0x0]\n"
419       "add x27, x27, #0x8\n"
420       "bge 14b\n"
421       "15:"  // Tail row loop: width 1 loop: skip
422       "add %x[out], %x[out], #0x80\n"
423       "cmp %x[height], #0x1\n"
424       "bge 9b\n"
425       "16:"  // Done
426 
427       : [height] "+&r" (height), [in] "+&r" (in), [out] "+&r" (out)
428       : [in_stride] "r" (in_stride), [out_stride] "r" (out_stride), [pad_row] "r" (pad_row), [width] "r" (width)
429       : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "v9", "v10", "v11", "v12", "v13", "v14", "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"
430     );
431 }
432 
433 } // anonymous namespace
434 template<>
Transform(bfloat16 * out,const float * in,int stride,int x0,int xmax,int k0,int kmax)435 void Transform<16, 4, true, VLType::None>(
436     bfloat16 *out, const float *in, int stride, int x0, int xmax, int k0, int kmax)
437 {
438     a64_transpose_interleave_16_2x4_fp32bf16(
439         out,
440         in + k0 * stride + x0,
441         (xmax-x0),
442         stride * sizeof(float),
443         (kmax-k0)
444     );
445 }
446 
447 #endif
448