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_64(uint16_t * out,const uint16_t * in,size_t width,size_t in_stride,size_t height)31 void a64_transpose_interleave_64(uint16_t *out, const uint16_t *in, size_t width, size_t in_stride, size_t height)
32 {
33     size_t out_stride = 32 * height * sizeof(uint16_t);
34 
35     __asm__ __volatile__(
36       "cmp %x[height], #0x4\n"
37       "blt 10f\n"
38       "1:"  // Main row loop: Head
39       "mov x24, %x[in]\n"
40       "mov x23, %x[out]\n"
41       "add x22, x24, %x[in_stride]\n"
42       "add x21, x22, %x[in_stride]\n"
43       "add x20, x21, %x[in_stride]\n"
44       "add %x[in], x20, %x[in_stride]\n"
45       "sub %x[height], %x[height], #0x4\n"
46       "mov x19, %x[width]\n"
47       "cmp x19, #0x20\n"
48       "blt 3f\n"
49       "2:"  // Main row loop: Column loop
50       "ldr q31, [x24], #0x10\n"
51       "sub x19, x19, #0x20\n"
52       "ldr q30, [x22], #0x10\n"
53       "cmp x19, #0x20\n"
54       "ldr q29, [x21], #0x10\n"
55       "ldr q28, [x20], #0x10\n"
56       "ldr q27, [x24], #0x10\n"
57       "ldr q26, [x22], #0x10\n"
58       "ldr q25, [x21], #0x10\n"
59       "ldr q24, [x20], #0x10\n"
60       "ldr q23, [x24], #0x10\n"
61       "ldr q22, [x22], #0x10\n"
62       "ldr q21, [x21], #0x10\n"
63       "ldr q20, [x20], #0x10\n"
64       "ldr q19, [x24], #0x10\n"
65       "ldr q18, [x22], #0x10\n"
66       "ldr q17, [x21], #0x10\n"
67       "ldr q16, [x20], #0x10\n"
68       "str q31, [x23, #0x0]\n"
69       "str q27, [x23, #0x10]\n"
70       "str q23, [x23, #0x20]\n"
71       "str q19, [x23, #0x30]\n"
72       "str q30, [x23, #0x40]\n"
73       "str q26, [x23, #0x50]\n"
74       "str q22, [x23, #0x60]\n"
75       "str q18, [x23, #0x70]\n"
76       "str q29, [x23, #0x80]\n"
77       "str q25, [x23, #0x90]\n"
78       "str q21, [x23, #0xa0]\n"
79       "str q17, [x23, #0xb0]\n"
80       "str q28, [x23, #0xc0]\n"
81       "str q24, [x23, #0xd0]\n"
82       "str q20, [x23, #0xe0]\n"
83       "str q16, [x23, #0xf0]\n"
84       "add x23, x23, %x[out_stride]\n"
85       "bge 2b\n"
86       "3:"  // Main row loop: Column loop skip
87       "cmp x19, #0x10\n"
88       "blt 5f\n"
89       "4:"  // Main row loop: width 16 loop: loop
90       "ldr q23, [x24], #0x10\n"
91       "sub x19, x19, #0x10\n"
92       "ldr q22, [x22], #0x10\n"
93       "cmp x19, #0x10\n"
94       "ldr q21, [x21], #0x10\n"
95       "ldr q20, [x20], #0x10\n"
96       "ldr q19, [x24], #0x10\n"
97       "ldr q18, [x22], #0x10\n"
98       "ldr q17, [x21], #0x10\n"
99       "ldr q16, [x20], #0x10\n"
100       "str q23, [x23, #0x0]\n"
101       "str q19, [x23, #0x10]\n"
102       "str q22, [x23, #0x40]\n"
103       "str q18, [x23, #0x50]\n"
104       "str q21, [x23, #0x80]\n"
105       "str q17, [x23, #0x90]\n"
106       "str q20, [x23, #0xc0]\n"
107       "str q16, [x23, #0xd0]\n"
108       "add x23, x23, #0x20\n"
109       "bge 4b\n"
110       "5:"  // Main row loop: width 16 loop: skip
111       "cmp x19, #0x4\n"
112       "blt 7f\n"
113       "6:"  // Main row loop: width 4 loop: loop
114       "ldr d19, [x24], #0x8\n"
115       "sub x19, x19, #0x4\n"
116       "ldr d18, [x22], #0x8\n"
117       "cmp x19, #0x4\n"
118       "ldr d17, [x21], #0x8\n"
119       "ldr d16, [x20], #0x8\n"
120       "str d19, [x23, #0x0]\n"
121       "str d18, [x23, #0x40]\n"
122       "str d17, [x23, #0x80]\n"
123       "str d16, [x23, #0xc0]\n"
124       "add x23, x23, #0x8\n"
125       "bge 6b\n"
126       "7:"  // Main row loop: width 4 loop: skip
127       "cmp x19, #0x1\n"
128       "blt 9f\n"
129       "8:"  // Main row loop: width 1 loop: loop
130       "ldr h19, [x24], #0x2\n"
131       "sub x19, x19, #0x1\n"
132       "ldr h18, [x22], #0x2\n"
133       "cmp x19, #0x1\n"
134       "ldr h17, [x21], #0x2\n"
135       "ldr h16, [x20], #0x2\n"
136       "str h19, [x23, #0x0]\n"
137       "str h18, [x23, #0x40]\n"
138       "str h17, [x23, #0x80]\n"
139       "str h16, [x23, #0xc0]\n"
140       "add x23, x23, #0x2\n"
141       "bge 8b\n"
142       "9:"  // Main row loop: width 1 loop: skip
143       "add %x[out], %x[out], #0x100\n"
144       "cmp %x[height], #0x4\n"
145       "bge 1b\n"
146       "cbz %x[height], 20f\n"
147       "10:"  // Main loop skip
148 
149       "11:"  // Tail row loop: Head
150       "mov x24, %x[in]\n"
151       "mov x23, %x[out]\n"
152       "add %x[in], x24, %x[in_stride]\n"
153       "sub %x[height], %x[height], #0x1\n"
154       "mov x19, %x[width]\n"
155       "cmp x19, #0x20\n"
156       "blt 13f\n"
157       "12:"  // Tail row loop: Column loop
158       "ldr q19, [x24], #0x10\n"
159       "sub x19, x19, #0x20\n"
160       "cmp x19, #0x20\n"
161       "ldr q18, [x24], #0x10\n"
162       "ldr q17, [x24], #0x10\n"
163       "ldr q16, [x24], #0x10\n"
164       "str q19, [x23, #0x0]\n"
165       "str q18, [x23, #0x10]\n"
166       "str q17, [x23, #0x20]\n"
167       "str q16, [x23, #0x30]\n"
168       "add x23, x23, %x[out_stride]\n"
169       "bge 12b\n"
170       "13:"  // Tail row loop: Column loop skip
171       "cmp x19, #0x10\n"
172       "blt 15f\n"
173       "14:"  // Tail row loop: width 16 loop: loop
174       "ldr q17, [x24], #0x10\n"
175       "sub x19, x19, #0x10\n"
176       "cmp x19, #0x10\n"
177       "ldr q16, [x24], #0x10\n"
178       "str q17, [x23, #0x0]\n"
179       "str q16, [x23, #0x10]\n"
180       "add x23, x23, #0x20\n"
181       "bge 14b\n"
182       "15:"  // Tail row loop: width 16 loop: skip
183       "cmp x19, #0x4\n"
184       "blt 17f\n"
185       "16:"  // Tail row loop: width 4 loop: loop
186       "ldr d16, [x24], #0x8\n"
187       "sub x19, x19, #0x4\n"
188       "cmp x19, #0x4\n"
189       "str d16, [x23, #0x0]\n"
190       "add x23, x23, #0x8\n"
191       "bge 16b\n"
192       "17:"  // Tail row loop: width 4 loop: skip
193       "cmp x19, #0x1\n"
194       "blt 19f\n"
195       "18:"  // Tail row loop: width 1 loop: loop
196       "ldr h16, [x24], #0x2\n"
197       "sub x19, x19, #0x1\n"
198       "cmp x19, #0x1\n"
199       "str h16, [x23, #0x0]\n"
200       "add x23, x23, #0x2\n"
201       "bge 18b\n"
202       "19:"  // Tail row loop: width 1 loop: skip
203       "add %x[out], %x[out], #0x40\n"
204       "cmp %x[height], #0x1\n"
205       "bge 11b\n"
206       "20:"  // Done
207 
208       : [height] "+&r" (height), [in] "+&r" (in), [out] "+&r" (out)
209       : [in_stride] "r" (in_stride), [out_stride] "r" (out_stride), [width] "r" (width)
210       : "cc", "memory", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", "x19", "x20", "x21", "x22", "x23", "x24"
211     );
212 }
213 
214 } // anonymous namespace
215 
216 template<>
Transform(float * out,const float * in,int stride,int x0,int xmax,int k0,int kmax)217 void Transform<16, 1, true, VLType::None>(
218     float *out, const float *in, int stride, int x0, int xmax, int k0, int kmax)
219 {
220     a64_transpose_interleave_64(
221         reinterpret_cast<uint16_t *>(out),
222         reinterpret_cast<const uint16_t *>(in + k0 * stride + x0),
223         (xmax-x0) * sizeof(float) / 2,
224         stride * sizeof(float),
225         (kmax-k0)
226     );
227 }
228 
229 template<>
Transform(__fp16 * out,const __fp16 * in,int stride,int x0,int xmax,int k0,int kmax)230 void Transform<32, 1, true, VLType::None>(
231     __fp16 *out, const __fp16 *in, int stride, int x0, int xmax, int k0, int kmax)
232 {
233     a64_transpose_interleave_64(
234         reinterpret_cast<uint16_t *>(out),
235         reinterpret_cast<const uint16_t *>(in + k0 * stride + x0),
236         (xmax-x0) * sizeof(__fp16) / 2,
237         stride * sizeof(__fp16),
238         (kmax-k0)
239     );
240 }
241 
242 template<>
Transform(uint16_t * out,const uint16_t * in,int stride,int x0,int xmax,int k0,int kmax)243 void Transform<32, 1, true, VLType::None>(
244     uint16_t *out, const uint16_t *in, int stride, int x0, int xmax, int k0, int kmax)
245 {
246     a64_transpose_interleave_64(
247         reinterpret_cast<uint16_t *>(out),
248         reinterpret_cast<const uint16_t *>(in + k0 * stride + x0),
249         (xmax-x0) * sizeof(uint16_t) / 2,
250         stride * sizeof(uint16_t),
251         (kmax-k0)
252     );
253 }
254 
255 #endif
256