Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 1 | // Copyright 2020 Google LLC |
| 2 | // |
| 3 | // This source code is licensed under the BSD-style license found in the |
| 4 | // LICENSE file in the root directory of this source tree. |
| 5 | |
| 6 | #include <xnnpack/assembly.h> |
| 7 | |
| 8 | # void xnn_f16_gemm${"inc" if INC else ""}_minmax_ukernel_4x8__aarch64_neonfp16arith_ld64( |
| 9 | # size_t mr, x0 |
| 10 | # size_t nc, x1 |
| 11 | # size_t kc, x2 / x0 |
| 12 | # const uint8_t*restrict a, x3 |
| 13 | # size_t a_stride, x4 |
| 14 | # const void*restrict w, x5 |
| 15 | # uint8_t*restrict c, x6 |
| 16 | # size_t cm_stride, x7 |
| 17 | # size_t cn_stride, [sp] -> x14 |
| 18 | $if INC: |
| 19 | # const float*restrict acc, [sp + 8] -> x15 |
Frank Barchard | 5c9e889 | 2020-04-15 18:50:11 -0700 | [diff] [blame] | 20 | # const union xnn_f16_scaleminmax_params params[restrict XNN_MIN_ELEMENTS(1)]) [sp + 16] -> x8 |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 21 | $else: |
Frank Barchard | 5c9e889 | 2020-04-15 18:50:11 -0700 | [diff] [blame] | 22 | # const union xnn_f16_scaleminmax_params params[restrict XNN_MIN_ELEMENTS(1)]) [sp + 8] -> x8 |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 23 | |
Frank Barchard | 909564c | 2020-06-09 03:54:33 -0700 | [diff] [blame] | 24 | # d8-d15, x19-x30 need to be preserved if used. x18 is reserved by the OS. |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 25 | |
| 26 | # A pointers |
| 27 | # x3 a0 |
| 28 | # x11 a1 |
| 29 | # x12 a2 |
| 30 | # x4 a3 / a_stride |
| 31 | |
| 32 | # C pointers |
| 33 | # x6 c0 |
| 34 | # x9 c1 |
| 35 | # x10 c2 |
| 36 | # x7 c3 / cm_stride |
| 37 | |
| 38 | # Vector register usage |
| 39 | # A0 v0 |
| 40 | # A1 v1 |
| 41 | # A2 v2 |
| 42 | # A3 v3 |
| 43 | # B v20 v21 v22 v23 |
| 44 | # C v16 |
| 45 | # C v18 |
| 46 | # C v28 |
| 47 | # C v30 |
| 48 | # Clamp v4, v5, v6 |
| 49 | # unused A v7 v8 v9 v10 v11 |
| 50 | # unused B v19 |
| 51 | |
| 52 | BEGIN_FUNCTION xnn_f16_gemm${"inc" if INC else ""}_minmax_ukernel_4x8__aarch64_neonfp16arith_ld64 |
Frank Barchard | f5cc7e7 | 2020-04-20 11:35:48 -0700 | [diff] [blame] | 53 | |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 54 | $if INC: |
| 55 | # Load cn_stride, acc |
| 56 | LDP x14, x15, [sp] |
| 57 | # Load params pointer |
| 58 | LDR x8, [sp, 16] |
| 59 | $else: |
| 60 | # Load cn_stride, params pointer |
| 61 | LDP x14, x8, [sp] |
| 62 | |
| 63 | # Load params values |
| 64 | LD3R {v4.8h, v5.8h, v6.8h}, [x8] |
| 65 | |
| 66 | # Clamp A and C pointers |
| 67 | CMP x0, 2 // if mr < 2 |
| 68 | ADD x11, x3, x4 // a1 = a0 + a_stride |
| 69 | ADD x9, x6, x7 // c1 = c0 + cm_stride |
| 70 | CSEL x11, x3, x11, LO // a1 = a0 |
| 71 | CSEL x9, x6, x9, LO // c1 = c0 |
| 72 | |
| 73 | ADD x12, x11, x4 // a2 = a1 + a_stride |
| 74 | ADD x10, x9, x7 // c2 = c1 + cm_stride |
| 75 | // if mr <= 2 |
| 76 | CSEL x12, x11, x12, LS // a2 = a1 |
| 77 | CSEL x10, x9, x10, LS // c2 = c1 |
| 78 | |
| 79 | CMP x0, 4 // if mr < 4 |
| 80 | ADD x4, x12, x4 // a3 = a2 + a_stride |
| 81 | ADD x7, x10, x7 // c3 = c2 + cm_stride |
| 82 | CSEL x4, x12, x4, LO // a3 = a2 |
| 83 | CSEL x7, x10, x7, LO // c3 = c2 |
| 84 | |
| 85 | 0: |
| 86 | $if INC: |
| 87 | # Load initial accumulators |
| 88 | LDP q16, q18, [x15], 32 |
| 89 | LDP q28, q30, [x15], 32 |
| 90 | $else: |
| 91 | # Load initial bias from w into accumulators |
| 92 | LDR q16, [x5], 16 |
| 93 | MOV v18.16b, v16.16b |
| 94 | MOV v28.16b, v16.16b |
| 95 | MOV v30.16b, v16.16b |
| 96 | |
| 97 | # Is there at least 4 halffloats (8 bytes)? |
| 98 | SUBS x0, x2, 8 // k = kc - 8 |
Frank Barchard | 3b26206 | 2020-09-30 15:53:17 -0700 | [diff] [blame] | 99 | B.LO 3f |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 100 | |
| 101 | # Main loop - 4 halffloats of A (8 bytes) |
| 102 | 1: |
Frank Barchard | fc563f5 | 2020-04-24 16:21:11 -0700 | [diff] [blame] | 103 | LDR d0, [x3], 8 |
| 104 | LDR q20, [x5], 16 |
| 105 | LDR q21, [x5], 16 |
| 106 | LDR d1, [x11], 8 |
| 107 | LDR d2, [x12], 8 |
| 108 | LDR d3, [x4], 8 |
| 109 | SUBS x0, x0, 8 |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 110 | FMLA v16.8h, v20.8h, v0.h[0] |
| 111 | FMLA v18.8h, v20.8h, v1.h[0] |
| 112 | FMLA v28.8h, v20.8h, v2.h[0] |
| 113 | FMLA v30.8h, v20.8h, v3.h[0] |
Frank Barchard | fc563f5 | 2020-04-24 16:21:11 -0700 | [diff] [blame] | 114 | LDR q22, [x5], 16 |
| 115 | LDR q23, [x5], 16 |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 116 | |
| 117 | FMLA v16.8h, v21.8h, v0.h[1] |
| 118 | FMLA v18.8h, v21.8h, v1.h[1] |
| 119 | FMLA v28.8h, v21.8h, v2.h[1] |
| 120 | FMLA v30.8h, v21.8h, v3.h[1] |
| 121 | |
| 122 | FMLA v16.8h, v22.8h, v0.h[2] |
| 123 | FMLA v18.8h, v22.8h, v1.h[2] |
| 124 | FMLA v28.8h, v22.8h, v2.h[2] |
| 125 | FMLA v30.8h, v22.8h, v3.h[2] |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 126 | |
| 127 | FMLA v16.8h, v23.8h, v0.h[3] |
| 128 | FMLA v18.8h, v23.8h, v1.h[3] |
| 129 | FMLA v28.8h, v23.8h, v2.h[3] |
| 130 | FMLA v30.8h, v23.8h, v3.h[3] |
| 131 | B.HS 1b |
| 132 | |
| 133 | # Is there a remainder?- 2 halffloats of A (4 bytes) |
Frank Barchard | 3b26206 | 2020-09-30 15:53:17 -0700 | [diff] [blame] | 134 | TBNZ x0, 2, 4f |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 135 | # Is there a remainder?- 1 halffloats of A (2 bytes) |
Frank Barchard | 3b26206 | 2020-09-30 15:53:17 -0700 | [diff] [blame] | 136 | TBNZ x0, 1, 5f |
| 137 | 2: |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 138 | # Scale and Clamp |
| 139 | FMUL v16.8h, v16.8h, v4.8h |
| 140 | SUBS x1, x1, 8 |
| 141 | FMUL v18.8h, v18.8h, v4.8h |
| 142 | FMUL v28.8h, v28.8h, v4.8h |
| 143 | FMUL v30.8h, v30.8h, v4.8h |
| 144 | FMAX v16.8h, v16.8h, v5.8h |
| 145 | FMAX v18.8h, v18.8h, v5.8h |
| 146 | FMAX v28.8h, v28.8h, v5.8h |
| 147 | FMAX v30.8h, v30.8h, v5.8h |
| 148 | FMIN v16.8h, v16.8h, v6.8h |
| 149 | FMIN v18.8h, v18.8h, v6.8h |
| 150 | FMIN v28.8h, v28.8h, v6.8h |
| 151 | FMIN v30.8h, v30.8h, v6.8h |
| 152 | |
| 153 | # Store full 4 x 8 |
Frank Barchard | 3b26206 | 2020-09-30 15:53:17 -0700 | [diff] [blame] | 154 | B.LO 6f |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 155 | |
| 156 | $if INC: |
| 157 | ST1 {v30.16b}, [x7], x14 |
| 158 | SUB x3, x3, x2 // a0 -= kc |
| 159 | ST1 {v28.16b}, [x10], x14 |
| 160 | SUB x11, x11, x2 // a1 -= kc |
| 161 | ST1 {v18.16b}, [x9], x14 |
| 162 | SUB x12, x12, x2 // a2 -= kc |
| 163 | ST1 {v16.16b}, [x6], x14 |
| 164 | SUB x4, x4, x2 // a3 -= kc |
| 165 | $else: |
| 166 | ST1 {v16.16b}, [x6], x14 |
| 167 | SUB x3, x3, x2 // a0 -= kc |
| 168 | ST1 {v18.16b}, [x9], x14 |
| 169 | SUB x11, x11, x2 // a1 -= kc |
| 170 | ST1 {v28.16b}, [x10], x14 |
| 171 | SUB x12, x12, x2 // a2 -= kc |
| 172 | ST1 {v30.16b}, [x7], x14 |
| 173 | SUB x4, x4, x2 // a3 -= kc |
| 174 | |
| 175 | B.HI 0b |
| 176 | RET |
| 177 | |
Frank Barchard | 3b26206 | 2020-09-30 15:53:17 -0700 | [diff] [blame] | 178 | 3: |
| 179 | TBZ x0, 2, 5f |
| 180 | 4: |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 181 | # Remainder- 2 halffloats of A (4 bytes) |
| 182 | LDR s0, [x3], 4 |
Frank Barchard | fc563f5 | 2020-04-24 16:21:11 -0700 | [diff] [blame] | 183 | LDR q20, [x5], 16 |
| 184 | LDR q21, [x5], 16 |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 185 | LDR s1, [x11], 4 |
| 186 | LDR s2, [x12], 4 |
| 187 | LDR s3, [x4], 4 |
| 188 | |
| 189 | FMLA v16.8h, v20.8h, v0.h[0] |
| 190 | FMLA v18.8h, v20.8h, v1.h[0] |
| 191 | FMLA v28.8h, v20.8h, v2.h[0] |
| 192 | FMLA v30.8h, v20.8h, v3.h[0] |
| 193 | |
| 194 | FMLA v16.8h, v21.8h, v0.h[1] |
| 195 | FMLA v18.8h, v21.8h, v1.h[1] |
| 196 | FMLA v28.8h, v21.8h, v2.h[1] |
| 197 | FMLA v30.8h, v21.8h, v3.h[1] |
| 198 | |
Frank Barchard | 3b26206 | 2020-09-30 15:53:17 -0700 | [diff] [blame] | 199 | TBZ x0, 1, 2b |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 200 | |
Frank Barchard | 3b26206 | 2020-09-30 15:53:17 -0700 | [diff] [blame] | 201 | 5: |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 202 | # Remainder- 1 halffloat of A (2 bytes) |
| 203 | LDR h0, [x3], 2 |
| 204 | LDR q20, [x5], 16 |
| 205 | LDR h1, [x11], 2 |
| 206 | LDR h2, [x12], 2 |
| 207 | LDR h3 , [x4], 2 |
| 208 | FMLA v16.8h, v20.8h, v0.h[0] |
| 209 | FMLA v18.8h, v20.8h, v1.h[0] |
| 210 | FMLA v28.8h, v20.8h, v2.h[0] |
| 211 | FMLA v30.8h, v20.8h, v3.h[0] |
Frank Barchard | 3b26206 | 2020-09-30 15:53:17 -0700 | [diff] [blame] | 212 | B 2b |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 213 | |
| 214 | # Store odd width |
Frank Barchard | 3b26206 | 2020-09-30 15:53:17 -0700 | [diff] [blame] | 215 | 6: |
| 216 | TBZ x1, 2, 7f |
| 217 | $if INC: |
| 218 | STR d30, [x7], 8 |
| 219 | DUP d30, v30.d[1] |
| 220 | STR d28, [x10], 8 |
| 221 | DUP d28, v28.d[1] |
| 222 | STR d18, [x9], 8 |
| 223 | DUP d18, v18.d[1] |
| 224 | STR d16, [x6], 8 |
| 225 | DUP d16, v16.d[1] |
| 226 | $else: |
| 227 | STR d16, [x6], 8 |
| 228 | DUP d16, v16.d[1] |
| 229 | STR d18, [x9], 8 |
| 230 | DUP d18, v18.d[1] |
| 231 | STR d28, [x10], 8 |
| 232 | DUP d28, v28.d[1] |
| 233 | STR d30, [x7], 8 |
| 234 | DUP d30, v30.d[1] |
| 235 | |
| 236 | 7: |
| 237 | TBZ x1, 1, 8f |
| 238 | $if INC: |
| 239 | STR s30, [x7], 4 |
| 240 | DUP s30, v30.s[1] |
| 241 | STR s28, [x10], 4 |
| 242 | DUP s28, v28.s[1] |
| 243 | STR s18, [x9], 4 |
| 244 | DUP s18, v18.s[1] |
| 245 | STR s16, [x6], 4 |
| 246 | DUP s16, v16.s[1] |
| 247 | $else: |
| 248 | STR s16, [x6], 4 |
| 249 | DUP s16, v16.s[1] |
| 250 | STR s18, [x9], 4 |
| 251 | DUP s18, v18.s[1] |
| 252 | STR s28, [x10], 4 |
| 253 | DUP s28, v28.s[1] |
| 254 | STR s30, [x7], 4 |
| 255 | DUP s30, v30.s[1] |
| 256 | |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 257 | 8: |
Frank Barchard | 3b26206 | 2020-09-30 15:53:17 -0700 | [diff] [blame] | 258 | TBZ x1, 0, 9f |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 259 | $if INC: |
Frank Barchard | 3b26206 | 2020-09-30 15:53:17 -0700 | [diff] [blame] | 260 | STR h30, [x7] |
| 261 | STR h28, [x10] |
| 262 | STR h18, [x9] |
| 263 | STR h16, [x6] |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 264 | $else: |
Frank Barchard | 3b26206 | 2020-09-30 15:53:17 -0700 | [diff] [blame] | 265 | STR h16, [x6] |
| 266 | STR h18, [x9] |
| 267 | STR h28, [x10] |
| 268 | STR h30, [x7] |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 269 | 9: |
Frank Barchard | bddfbcd | 2020-04-15 12:32:41 -0700 | [diff] [blame] | 270 | RET |
| 271 | |
| 272 | END_FUNCTION xnn_f16_gemm${"inc" if INC else ""}_minmax_ukernel_4x8__aarch64_neonfp16arith_ld64 |
| 273 | |
| 274 | #ifdef __ELF__ |
| 275 | .section ".note.GNU-stack","",%progbits |
| 276 | #endif |