1 /*
2 * Copyright (c) 2017-2020 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 all
14 * 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 FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24 #ifdef __aarch64__
25
26 #include <arm_neon.h>
27
28 #include "../../asmlib.hpp"
29
30 namespace arm_gemm {
31
a64_gemm_u8_8x12_x1(const uint8_t * Apanel,const uint8_t * Bpanel,uint32_t * Cpanel,int ablocks,int bblocks,int K)32 void a64_gemm_u8_8x12_x1(const uint8_t *Apanel, const uint8_t *Bpanel, uint32_t *Cpanel, int ablocks, int bblocks, int K) {
33 const uint8_t *a_ptr = Apanel;
34 uint32_t *c_ptr = Cpanel;
35 // We divide K by 4 because the udot instruction processes 4 elements at a time.
36 const int W = K/4;
37 // Fix up for odd lengths - set a flag if K is odd, but make
38 // sure we round up the iteration count.
39 const int oddk = (W & 1);
40 const int init_value_k = ((W+1)/2) - 1;
41 for (int yb=0; yb<ablocks; yb++) {
42 const uint8_t *a_ptr0 = a_ptr;
43 const uint8_t *b_ptr = Bpanel;
44 for (int xb=0; xb<bblocks; xb++) {
45 a_ptr = a_ptr0;
46 int k = init_value_k;
47 register uint8x16_t a0 asm("v0");
48 register uint8x16_t a1 asm("v1");
49 register uint8x16_t b0 asm("v2");
50 register uint8x16_t b1 asm("v3");
51 register uint8x16_t b2 asm("v4");
52
53 __asm __volatile (
54 // Initialize result registers, load initial operands, prime prefetches.
55 "movi v8.4s, #0x0\n"
56 "ldr %q[a0], [%[a_ptr]]\n"
57 "movi v9.4s, #0x0\n"
58 "ldr %q[b0], [%[b_ptr]]\n"
59 "movi v10.4s, #0x0\n"
60 "ldr %q[a1], [%[a_ptr], #16]\n"
61 "movi v11.4s, #0x0\n"
62 "ldr %q[b1], [%[b_ptr], #16]\n"
63 "movi v12.4s, #0x0\n"
64 ASM_PREFETCH("[%[b_ptr], #64]")
65 "movi v13.4s, #0x0\n"
66 ASM_PREFETCH("[%[a_ptr], #64]")
67 "movi v14.4s, #0x0\n"
68 ASM_PREFETCH("[%[b_ptr], #128]")
69 "movi v15.4s, #0x0\n"
70 ASM_PREFETCH("[%[a_ptr], #128]")
71 "movi v16.4s, #0x0\n"
72 ASM_PREFETCH("[%[b_ptr], #192]")
73 "movi v17.4s, #0x0\n"
74 ASM_PREFETCH("[%[b_ptr], #256]")
75 "movi v18.4s, #0x0\n"
76 ASM_PREFETCH("[%[a_ptr], #192]")
77 "movi v19.4s, #0x0\n"
78 ASM_PREFETCH("[%[b_ptr], #320]")
79 "movi v20.4s, #0x0\n"
80 ASM_PREFETCH("[%[a_ptr], #256]")
81 "movi v21.4s, #0x0\n"
82 ASM_PREFETCH("[%[b_ptr], #384]")
83 "movi v22.4s, #0x0\n"
84 "movi v23.4s, #0x0\n"
85 "movi v24.4s, #0x0\n"
86 "movi v25.4s, #0x0\n"
87 "movi v26.4s, #0x0\n"
88 "movi v27.4s, #0x0\n"
89 "movi v28.4s, #0x0\n"
90 "movi v29.4s, #0x0\n"
91 "movi v30.4s, #0x0\n"
92 "movi v31.4s, #0x0\n"
93
94 // Skip loop if we are doing zero iterations of it.
95 "cbz %w[k], 4f\n"
96
97 // Loop proper
98 "1:\n"
99 ".word 0x6f80e048 // udot v8.4s , %[b0].16b, %[a0].4b[0]\n"
100 ".word 0x6fa0e049 // udot v9.4s , %[b0].16b, %[a0].4b[1]\n"
101 "ldr %q[b2], [%[b_ptr], #32]\n"
102 ".word 0x6f80e84a // udot v10.4s, %[b0].16b, %[a0].4b[2]\n"
103 ".word 0x6fa0e84b // udot v11.4s, %[b0].16b, %[a0].4b[3]\n"
104 ".word 0x6f81e04c // udot v12.4s, %[b0].16b, %[a1].4b[0]\n"
105 ".word 0x6fa1e04d // udot v13.4s, %[b0].16b, %[a1].4b[1]\n"
106 ".word 0x6f81e84e // udot v14.4s, %[b0].16b, %[a1].4b[2]\n"
107 ".word 0x6fa1e84f // udot v15.4s, %[b0].16b, %[a1].4b[3]\n"
108 "ldr %q[b0], [%[b_ptr], #48]\n"
109
110 ".word 0x6f80e070 // udot v16.4s, %[b1].16b, %[a0].4b[0]\n"
111 ".word 0x6fa0e071 // udot v17.4s, %[b1].16b, %[a0].4b[1]\n"
112 ASM_PREFETCH("[%[a_ptr], #320]")
113 ".word 0x6f80e872 // udot v18.4s, %[b1].16b, %[a0].4b[2]\n"
114 ".word 0x6fa0e873 // udot v19.4s, %[b1].16b, %[a0].4b[3]\n"
115 ".word 0x6f81e074 // udot v20.4s, %[b1].16b, %[a1].4b[0]\n"
116 ".word 0x6fa1e075 // udot v21.4s, %[b1].16b, %[a1].4b[1]\n"
117 ".word 0x6f81e876 // udot v22.4s, %[b1].16b, %[a1].4b[2]\n"
118 ".word 0x6fa1e877 // udot v23.4s, %[b1].16b, %[a1].4b[3]\n"
119 "ldr %q[b1], [%[b_ptr], #64]\n"
120
121 ".word 0x6f80e098 // udot v24.4s, %[b2].16b, %[a0].4b[0]\n"
122 ".word 0x6fa0e099 // udot v25.4s, %[b2].16b, %[a0].4b[1]\n"
123 ASM_PREFETCH("[%[b_ptr], #448]")
124 ".word 0x6f80e89a // udot v26.4s, %[b2].16b, %[a0].4b[2]\n"
125 ".word 0x6fa0e89b // udot v27.4s, %[b2].16b, %[a0].4b[3]\n"
126 "ldr %q[a0], [%[a_ptr], #32]\n"
127 ".word 0x6f81e09c // udot v28.4s, %[b2].16b, %[a1].4b[0]\n"
128 ".word 0x6fa1e09d // udot v29.4s, %[b2].16b, %[a1].4b[1]\n"
129 ".word 0x6f81e89e // udot v30.4s, %[b2].16b, %[a1].4b[2]\n"
130 ".word 0x6fa1e89f // udot v31.4s, %[b2].16b, %[a1].4b[3]\n"
131 "ldr %q[a1], [%[a_ptr], #48]\n"
132
133 ".word 0x6f80e048 // udot v8.4s , %[b0].16b, %[a0].4b[0]\n"
134 ".word 0x6fa0e049 // udot v9.4s , %[b0].16b, %[a0].4b[1]\n"
135 "ldr %q[b2], [%[b_ptr], #80]\n"
136 ".word 0x6f80e84a // udot v10.4s, %[b0].16b, %[a0].4b[2]\n"
137 ".word 0x6fa0e84b // udot v11.4s, %[b0].16b, %[a0].4b[3]\n"
138 ".word 0x6f81e04c // udot v12.4s, %[b0].16b, %[a1].4b[0]\n"
139 ".word 0x6fa1e04d // udot v13.4s, %[b0].16b, %[a1].4b[1]\n"
140 ".word 0x6f81e84e // udot v14.4s, %[b0].16b, %[a1].4b[2]\n"
141 ".word 0x6fa1e84f // udot v15.4s, %[b0].16b, %[a1].4b[3]\n"
142 "ldr %q[b0], [%[b_ptr], #96]\n"
143
144 ".word 0x6f80e070 // udot v16.4s, %[b1].16b, %[a0].4b[0]\n"
145 ".word 0x6fa0e071 // udot v17.4s, %[b1].16b, %[a0].4b[1]\n"
146 ASM_PREFETCH("[%[b_ptr], #512]")
147 ".word 0x6f80e872 // udot v18.4s, %[b1].16b, %[a0].4b[2]\n"
148 ".word 0x6fa0e873 // udot v19.4s, %[b1].16b, %[a0].4b[3]\n"
149 "subs %w[k], %w[k], #1\n"
150 ".word 0x6f81e074 // udot v20.4s, %[b1].16b, %[a1].4b[0]\n"
151 ".word 0x6fa1e075 // udot v21.4s, %[b1].16b, %[a1].4b[1]\n"
152 ".word 0x6f81e876 // udot v22.4s, %[b1].16b, %[a1].4b[2]\n"
153 ".word 0x6fa1e877 // udot v23.4s, %[b1].16b, %[a1].4b[3]\n"
154 "ldr %q[b1], [%[b_ptr], #112]\n"
155
156 ".word 0x6f80e098 // udot v24.4s, %[b2].16b, %[a0].4b[0]\n"
157 ".word 0x6fa0e099 // udot v25.4s, %[b2].16b, %[a0].4b[1]\n"
158 "add %[a_ptr], %[a_ptr], #64\n"
159 ".word 0x6f80e89a // udot v26.4s, %[b2].16b, %[a0].4b[2]\n"
160 ".word 0x6fa0e89b // udot v27.4s, %[b2].16b, %[a0].4b[3]\n"
161 "ldr %q[a0], [%[a_ptr]]\n"
162 ".word 0x6f81e09c // udot v28.4s, %[b2].16b, %[a1].4b[0]\n"
163 "add %[b_ptr], %[b_ptr], #96\n"
164 ".word 0x6fa1e09d // udot v29.4s, %[b2].16b, %[a1].4b[1]\n"
165 ".word 0x6f81e89e // udot v30.4s, %[b2].16b, %[a1].4b[2]\n"
166 ".word 0x6fa1e89f // udot v31.4s, %[b2].16b, %[a1].4b[3]\n"
167 "ldr %q[a1], [%[a_ptr], #16]\n"
168 "bne 1b\n"
169
170 // Target to use when K is 1 or 2 (i.e. zero iterations of main loop)
171 "4:\n"
172
173 // Branch to alternative tail for odd K
174 "cbnz %w[oddk], 2f\n"
175
176 // Detached final iteration (even K)
177 ".word 0x6f80e048 // udot v8.4s , %[b0].16b, %[a0].4b[0]\n"
178 ".word 0x6fa0e049 // udot v9.4s , %[b0].16b, %[a0].4b[1]\n"
179 "ldr %q[b2], [%[b_ptr], #32]\n"
180 ".word 0x6f80e84a // udot v10.4s, %[b0].16b, %[a0].4b[2]\n"
181 ".word 0x6fa0e84b // udot v11.4s, %[b0].16b, %[a0].4b[3]\n"
182 ".word 0x6f81e04c // udot v12.4s, %[b0].16b, %[a1].4b[0]\n"
183 ".word 0x6fa1e04d // udot v13.4s, %[b0].16b, %[a1].4b[1]\n"
184 ".word 0x6f81e84e // udot v14.4s, %[b0].16b, %[a1].4b[2]\n"
185 ".word 0x6fa1e84f // udot v15.4s, %[b0].16b, %[a1].4b[3]\n"
186 "ldr %q[b0], [%[b_ptr], #48]\n"
187
188 ".word 0x6f80e070 // udot v16.4s, %[b1].16b, %[a0].4b[0]\n"
189 ".word 0x6fa0e071 // udot v17.4s, %[b1].16b, %[a0].4b[1]\n"
190 ".word 0x6f80e872 // udot v18.4s, %[b1].16b, %[a0].4b[2]\n"
191 ".word 0x6fa0e873 // udot v19.4s, %[b1].16b, %[a0].4b[3]\n"
192 ".word 0x6f81e074 // udot v20.4s, %[b1].16b, %[a1].4b[0]\n"
193 ".word 0x6fa1e075 // udot v21.4s, %[b1].16b, %[a1].4b[1]\n"
194 ".word 0x6f81e876 // udot v22.4s, %[b1].16b, %[a1].4b[2]\n"
195 ".word 0x6fa1e877 // udot v23.4s, %[b1].16b, %[a1].4b[3]\n"
196 "ldr %q[b1], [%[b_ptr], #64]\n"
197
198 ".word 0x6f80e098 // udot v24.4s, %[b2].16b, %[a0].4b[0]\n"
199 ".word 0x6fa0e099 // udot v25.4s, %[b2].16b, %[a0].4b[1]\n"
200 "add %[a_ptr], %[a_ptr], #64\n"
201 ".word 0x6f80e89a // udot v26.4s, %[b2].16b, %[a0].4b[2]\n"
202 ".word 0x6fa0e89b // udot v27.4s, %[b2].16b, %[a0].4b[3]\n"
203 "ldr %q[a0], [%[a_ptr], #-32]\n"
204 ".word 0x6f81e09c // udot v28.4s, %[b2].16b, %[a1].4b[0]\n"
205 ".word 0x6fa1e09d // udot v29.4s, %[b2].16b, %[a1].4b[1]\n"
206 ".word 0x6f81e89e // udot v30.4s, %[b2].16b, %[a1].4b[2]\n"
207 ".word 0x6fa1e89f // udot v31.4s, %[b2].16b, %[a1].4b[3]\n"
208 "ldr %q[a1], [%[a_ptr], #-16]\n"
209
210 ".word 0x6f80e048 // udot v8.4s , %[b0].16b, %[a0].4b[0]\n"
211 "ldr %q[b2], [%[b_ptr], #80]\n"
212
213 ".word 0x6f80e070 // udot v16.4s, %[b1].16b, %[a0].4b[0]\n"
214 "add %[b_ptr], %[b_ptr], #96\n"
215 ".word 0x6fa0e049 // udot v9.4s , %[b0].16b, %[a0].4b[1]\n"
216 "str q8, [%[c_ptr], #0]\n"
217 ".word 0x6fa0e071 // udot v17.4s, %[b1].16b, %[a0].4b[1]\n"
218 "str q16, [%[c_ptr], #16]\n"
219 ".word 0x6f80e098 // udot v24.4s, %[b2].16b, %[a0].4b[0]\n"
220 "str q24, [%[c_ptr], #32]\n"
221
222 ".word 0x6fa0e099 // udot v25.4s, %[b2].16b, %[a0].4b[1]\n"
223 "str q9, [%[c_ptr], #48]\n"
224 ".word 0x6f80e84a // udot v10.4s, %[b0].16b, %[a0].4b[2]\n"
225 "str q17, [%[c_ptr], #64]\n"
226 ".word 0x6f80e872 // udot v18.4s, %[b1].16b, %[a0].4b[2]\n"
227 "str q25, [%[c_ptr], #80]\n"
228 ".word 0x6f80e89a // udot v26.4s, %[b2].16b, %[a0].4b[2]\n"
229 "str q10, [%[c_ptr], #96]\n"
230
231 ".word 0x6fa0e84b // udot v11.4s, %[b0].16b, %[a0].4b[3]\n"
232 "str q18, [%[c_ptr], #112]\n"
233 ".word 0x6fa0e873 // udot v19.4s, %[b1].16b, %[a0].4b[3]\n"
234 "str q26, [%[c_ptr], #128]\n"
235 ".word 0x6fa0e89b // udot v27.4s, %[b2].16b, %[a0].4b[3]\n"
236 "str q11, [%[c_ptr], #144]\n"
237
238 ".word 0x6f81e04c // udot v12.4s, %[b0].16b, %[a1].4b[0]\n"
239 "str q19, [%[c_ptr], #160]\n"
240 ".word 0x6f81e074 // udot v20.4s, %[b1].16b, %[a1].4b[0]\n"
241 "str q27, [%[c_ptr], #176]\n"
242 ".word 0x6f81e09c // udot v28.4s, %[b2].16b, %[a1].4b[0]\n"
243 "str q12, [%[c_ptr], #192]\n"
244
245 ".word 0x6fa1e04d // udot v13.4s, %[b0].16b, %[a1].4b[1]\n"
246 "str q20, [%[c_ptr], #208]\n"
247 ".word 0x6fa1e075 // udot v21.4s, %[b1].16b, %[a1].4b[1]\n"
248 "str q28, [%[c_ptr], #224]\n"
249 ".word 0x6fa1e09d // udot v29.4s, %[b2].16b, %[a1].4b[1]\n"
250 "str q13, [%[c_ptr], #240]\n"
251
252 ".word 0x6f81e84e // udot v14.4s, %[b0].16b, %[a1].4b[2]\n"
253 "str q21, [%[c_ptr], #256]\n"
254 ".word 0x6f81e876 // udot v22.4s, %[b1].16b, %[a1].4b[2]\n"
255 "str q29, [%[c_ptr], #272]\n"
256 ".word 0x6f81e89e // udot v30.4s, %[b2].16b, %[a1].4b[2]\n"
257 "str q14, [%[c_ptr], #288]\n"
258
259 ".word 0x6fa1e84f // udot v15.4s, %[b0].16b, %[a1].4b[3]\n"
260 "str q22, [%[c_ptr], #304]\n"
261 ".word 0x6fa1e877 // udot v23.4s, %[b1].16b, %[a1].4b[3]\n"
262 "str q30, [%[c_ptr], #320]\n"
263 ".word 0x6fa1e89f // udot v31.4s, %[b2].16b, %[a1].4b[3]\n"
264 "str q15, [%[c_ptr], #336]\n"
265
266 "b 3f\n"
267
268 // Detached final iteration (odd K)
269 "2:\n"
270 ".word 0x6f80e048 // udot v8.4s , %[b0].16b, %[a0].4b[0]\n"
271 "ldr %q[b2], [%[b_ptr], #32]\n"
272 ".word 0x6f80e070 // udot v16.4s, %[b1].16b, %[a0].4b[0]\n"
273 ".word 0x6fa0e049 // udot v9.4s , %[b0].16b, %[a0].4b[1]\n"
274 "str q8, [%[c_ptr], #0]\n"
275 ".word 0x6fa0e071 // udot v17.4s, %[b1].16b, %[a0].4b[1]\n"
276 "str q16, [%[c_ptr], #16]\n"
277 ".word 0x6f80e098 // udot v24.4s, %[b2].16b, %[a0].4b[0]\n"
278 "add %[b_ptr], %[b_ptr], #48\n"
279 "add %[a_ptr], %[a_ptr], #32\n"
280 "str q24, [%[c_ptr], #32]\n"
281 ".word 0x6fa0e099 // udot v25.4s, %[b2].16b, %[a0].4b[1]\n"
282 "str q9, [%[c_ptr], #48]\n"
283
284 ".word 0x6f80e84a // udot v10.4s, %[b0].16b, %[a0].4b[2]\n"
285 "str q17, [%[c_ptr], #64]\n"
286 ".word 0x6f80e872 // udot v18.4s, %[b1].16b, %[a0].4b[2]\n"
287 "str q25, [%[c_ptr], #80]\n"
288 ".word 0x6f80e89a // udot v26.4s, %[b2].16b, %[a0].4b[2]\n"
289 "str q10, [%[c_ptr], #96]\n"
290
291 ".word 0x6fa0e84b // udot v11.4s, %[b0].16b, %[a0].4b[3]\n"
292 "str q18, [%[c_ptr], #112]\n"
293 ".word 0x6fa0e873 // udot v19.4s, %[b1].16b, %[a0].4b[3]\n"
294 "str q26, [%[c_ptr], #128]\n"
295 ".word 0x6fa0e89b // udot v27.4s, %[b2].16b, %[a0].4b[3]\n"
296 "str q11, [%[c_ptr], #144]\n"
297
298 ".word 0x6f81e04c // udot v12.4s, %[b0].16b, %[a1].4b[0]\n"
299 "str q19, [%[c_ptr], #160]\n"
300 ".word 0x6f81e074 // udot v20.4s, %[b1].16b, %[a1].4b[0]\n"
301 "str q27, [%[c_ptr], #176]\n"
302 ".word 0x6f81e09c // udot v28.4s, %[b2].16b, %[a1].4b[0]\n"
303 "str q12, [%[c_ptr], #192]\n"
304
305 ".word 0x6fa1e04d // udot v13.4s, %[b0].16b, %[a1].4b[1]\n"
306 "str q20, [%[c_ptr], #208]\n"
307 ".word 0x6fa1e075 // udot v21.4s, %[b1].16b, %[a1].4b[1]\n"
308 "str q28, [%[c_ptr], #224]\n"
309 ".word 0x6fa1e09d // udot v29.4s, %[b2].16b, %[a1].4b[1]\n"
310 "str q13, [%[c_ptr], #240]\n"
311
312 ".word 0x6f81e84e // udot v14.4s, %[b0].16b, %[a1].4b[2]\n"
313 "str q21, [%[c_ptr], #256]\n"
314 ".word 0x6f81e876 // udot v22.4s, %[b1].16b, %[a1].4b[2]\n"
315 "str q29, [%[c_ptr], #272]\n"
316 ".word 0x6f81e89e // udot v30.4s, %[b2].16b, %[a1].4b[2]\n"
317 "str q14, [%[c_ptr], #288]\n"
318
319 ".word 0x6fa1e84f // udot v15.4s, %[b0].16b, %[a1].4b[3]\n"
320 "str q22, [%[c_ptr], #304]\n"
321 ".word 0x6fa1e877 // udot v23.4s, %[b1].16b, %[a1].4b[3]\n"
322 "str q30, [%[c_ptr], #320]\n"
323 ".word 0x6fa1e89f // udot v31.4s, %[b2].16b, %[a1].4b[3]\n"
324 "str q15, [%[c_ptr], #336]\n"
325
326
327 // Common tail
328 "3:\n"
329 "str q23, [%[c_ptr], #352]\n"
330 "str q31, [%[c_ptr], #368]\n"
331 "add %[c_ptr], %[c_ptr], #384\n"
332
333 :
334 [a_ptr] "+r" (a_ptr), [b_ptr] "+r" (b_ptr), [c_ptr] "+r" (c_ptr),
335 [a0] "+w" (a0), [a1] "+w" (a1),
336 [b0] "+w" (b0), [b1] "+w" (b1), [b2] "+w" (b2), [k] "+r" (k)
337 : [oddk] "r" (oddk)
338 : "x20", "x21", "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", "v16", "v17", "v18",
339 "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", "cc"
340 );
341
342 }
343 }
344 }
345
346 } // namespace arm_gemm
347
348 #endif
349