Austin Schuh | dace2a6 | 2020-08-18 10:56:48 -0700 | [diff] [blame] | 1 | dnl IA-64 mpn_hamdist -- mpn hamming distance. |
| 2 | |
| 3 | dnl Contributed to the GNU project by Torbjorn Granlund. |
| 4 | |
| 5 | dnl Copyright 2003-2005 Free Software Foundation, Inc. |
| 6 | |
| 7 | dnl This file is part of the GNU MP Library. |
| 8 | dnl |
| 9 | dnl The GNU MP Library is free software; you can redistribute it and/or modify |
| 10 | dnl it under the terms of either: |
| 11 | dnl |
| 12 | dnl * the GNU Lesser General Public License as published by the Free |
| 13 | dnl Software Foundation; either version 3 of the License, or (at your |
| 14 | dnl option) any later version. |
| 15 | dnl |
| 16 | dnl or |
| 17 | dnl |
| 18 | dnl * the GNU General Public License as published by the Free Software |
| 19 | dnl Foundation; either version 2 of the License, or (at your option) any |
| 20 | dnl later version. |
| 21 | dnl |
| 22 | dnl or both in parallel, as here. |
| 23 | dnl |
| 24 | dnl The GNU MP Library is distributed in the hope that it will be useful, but |
| 25 | dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 26 | dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 27 | dnl for more details. |
| 28 | dnl |
| 29 | dnl You should have received copies of the GNU General Public License and the |
| 30 | dnl GNU Lesser General Public License along with the GNU MP Library. If not, |
| 31 | dnl see https://www.gnu.org/licenses/. |
| 32 | |
| 33 | include(`../config.m4') |
| 34 | |
| 35 | C cycles/limb |
| 36 | C Itanium: 2 |
| 37 | C Itanium 2: 1 |
| 38 | |
| 39 | C INPUT PARAMETERS |
| 40 | define(`up', `r32') |
| 41 | define(`vp', `r33') |
| 42 | define(`n', `r34') |
| 43 | |
| 44 | define(`u0',`r16') define(`u1',`r17') define(`u2',`r18') define(`u3',`r19') |
| 45 | define(`v0',`r20') define(`v1',`r21') define(`v2',`r22') define(`v3',`r23') |
| 46 | define(`x0',`r24') define(`x1',`r25') define(`x2',`r26') define(`x3',`r27') |
| 47 | define(`c0',`r28') define(`c1',`r29') define(`c2',`r30') define(`c3',`r31') |
| 48 | define(`s',`r8') |
| 49 | |
| 50 | |
| 51 | ASM_START() |
| 52 | PROLOGUE(mpn_hamdist) |
| 53 | .prologue |
| 54 | ifdef(`HAVE_ABI_32', |
| 55 | ` addp4 up = 0, up C M I |
| 56 | addp4 vp = 0, vp C M I |
| 57 | zxt4 n = n C I |
| 58 | ;; |
| 59 | ') |
| 60 | |
| 61 | {.mmi; ld8 r10 = [up], 8 C load first ulimb M01 |
| 62 | ld8 r11 = [vp], 8 C load first vlimb M01 |
| 63 | mov.i r2 = ar.lc C save ar.lc I0 |
| 64 | }{.mmi; and r14 = 3, n C M I |
| 65 | cmp.lt p15, p0 = 4, n C small count? M I |
| 66 | add n = -5, n C M I |
| 67 | ;; |
| 68 | }{.mmi; cmp.eq p6, p0 = 1, r14 C M I |
| 69 | cmp.eq p7, p0 = 2, r14 C M I |
| 70 | cmp.eq p8, p0 = 3, r14 C M I |
| 71 | }{.bbb |
| 72 | (p6) br.dptk .Lb01 C B |
| 73 | (p7) br.dptk .Lb10 C B |
| 74 | (p8) br.dptk .Lb11 C B |
| 75 | } |
| 76 | |
| 77 | |
| 78 | .Lb00: ld8 u1 = [up], 8 C M01 |
| 79 | ld8 v1 = [vp], 8 C M01 |
| 80 | shr.u n = n, 2 C I0 |
| 81 | xor x0 = r10, r11 C M I |
| 82 | ;; |
| 83 | ld8 u2 = [up], 8 C M01 |
| 84 | ld8 v2 = [vp], 8 C M01 |
| 85 | mov.i ar.lc = n C I0 |
| 86 | xor x1 = u1, v1 C M I |
| 87 | ;; |
| 88 | ld8 u3 = [up], 8 C M01 |
| 89 | ld8 v3 = [vp], 8 C M01 |
| 90 | xor x2 = u2, v2 C M I |
| 91 | mov s = 0 C M I |
| 92 | (p15) br.cond.dptk .grt4 C B |
| 93 | ;; |
| 94 | popcnt c0 = x0 C I0 |
| 95 | xor x3 = u3, v3 C M I |
| 96 | ;; |
| 97 | popcnt c1 = x1 C I0 |
| 98 | ;; |
| 99 | popcnt c2 = x2 C I0 |
| 100 | br .Lcj4 C B |
| 101 | |
| 102 | .grt4: ld8 u0 = [up], 8 C M01 |
| 103 | ld8 v0 = [vp], 8 C M01 |
| 104 | xor x1 = u1, v1 C M I |
| 105 | ;; |
| 106 | ld8 u1 = [up], 8 C M01 |
| 107 | ld8 v1 = [vp], 8 C M01 |
| 108 | xor x2 = u2, v2 C M I |
| 109 | ;; |
| 110 | ld8 u2 = [up], 8 C M01 |
| 111 | ld8 v2 = [vp], 8 C M01 |
| 112 | popcnt c0 = x0 C I0 |
| 113 | xor x3 = u3, v3 C M I |
| 114 | ;; |
| 115 | ld8 u3 = [up], 8 C M01 |
| 116 | ld8 v3 = [vp], 8 C M01 |
| 117 | popcnt c1 = x1 C I0 |
| 118 | xor x0 = u0, v0 C M I |
| 119 | br.cloop.dpnt .grt8 C B |
| 120 | |
| 121 | popcnt c2 = x2 C I0 |
| 122 | xor x1 = u1, v1 C M I |
| 123 | br .Lcj8 C B |
| 124 | |
| 125 | .grt8: ld8 u0 = [up], 8 C M01 |
| 126 | ld8 v0 = [vp], 8 C M01 |
| 127 | popcnt c2 = x2 C I0 |
| 128 | xor x1 = u1, v1 C M I |
| 129 | br .LL00 C B |
| 130 | |
| 131 | |
| 132 | .Lb01: xor x3 = r10, r11 C M I |
| 133 | shr.u n = n, 2 C I0 |
| 134 | (p15) br.cond.dptk .grt1 C B |
| 135 | ;; |
| 136 | popcnt r8 = x3 C I0 |
| 137 | br.ret.sptk.many b0 C B |
| 138 | |
| 139 | .grt1: ld8 u0 = [up], 8 C M01 |
| 140 | ld8 v0 = [vp], 8 C M01 |
| 141 | mov.i ar.lc = n C I0 |
| 142 | ;; |
| 143 | ld8 u1 = [up], 8 C M01 |
| 144 | ld8 v1 = [vp], 8 C M01 |
| 145 | mov s = 0 C M I |
| 146 | ;; |
| 147 | ld8 u2 = [up], 8 C M01 |
| 148 | ld8 v2 = [vp], 8 C M01 |
| 149 | ;; |
| 150 | ld8 u3 = [up], 8 C M01 |
| 151 | ld8 v3 = [vp], 8 C M01 |
| 152 | xor x0 = u0, v0 C M I |
| 153 | br.cloop.dpnt .grt5 C B |
| 154 | |
| 155 | xor x1 = u1, v1 C M I |
| 156 | ;; |
| 157 | popcnt c3 = x3 C I0 |
| 158 | xor x2 = u2, v2 C M I |
| 159 | ;; |
| 160 | popcnt c0 = x0 C I0 |
| 161 | xor x3 = u3, v3 C M I |
| 162 | ;; |
| 163 | popcnt c1 = x1 C I0 |
| 164 | br .Lcj5 C B |
| 165 | |
| 166 | .grt5: ld8 u0 = [up], 8 C M01 |
| 167 | ld8 v0 = [vp], 8 C M01 |
| 168 | xor x1 = u1, v1 C M I |
| 169 | ;; |
| 170 | ld8 u1 = [up], 8 C M01 |
| 171 | ld8 v1 = [vp], 8 C M01 |
| 172 | popcnt c3 = x3 C I0 |
| 173 | xor x2 = u2, v2 C M I |
| 174 | ;; |
| 175 | ld8 u2 = [up], 8 C M01 |
| 176 | ld8 v2 = [vp], 8 C M01 |
| 177 | popcnt c0 = x0 C I0 |
| 178 | xor x3 = u3, v3 C M I |
| 179 | ;; |
| 180 | ld8 u3 = [up], 8 C M01 |
| 181 | ld8 v3 = [vp], 8 C M01 |
| 182 | popcnt c1 = x1 C I0 |
| 183 | xor x0 = u0, v0 C M I |
| 184 | br.cloop.dpnt .Loop C B |
| 185 | br .Lend C B |
| 186 | |
| 187 | |
| 188 | .Lb10: ld8 u3 = [up], 8 C M01 |
| 189 | ld8 v3 = [vp], 8 C M01 |
| 190 | xor x2 = r10, r11 C M I |
| 191 | (p15) br.cond.dptk .grt2 C B |
| 192 | ;; |
| 193 | xor x3 = u3, v3 C M I |
| 194 | ;; |
| 195 | popcnt c2 = x2 C I0 |
| 196 | ;; |
| 197 | popcnt c3 = x3 C I0 |
| 198 | ;; |
| 199 | add s = c2, c3 C M I |
| 200 | br.ret.sptk.many b0 C B |
| 201 | |
| 202 | .grt2: ld8 u0 = [up], 8 C M01 |
| 203 | ld8 v0 = [vp], 8 C M01 |
| 204 | shr.u n = n, 2 C I0 |
| 205 | ;; |
| 206 | ld8 u1 = [up], 8 C M01 |
| 207 | ld8 v1 = [vp], 8 C M01 |
| 208 | mov.i ar.lc = n C I0 |
| 209 | mov s = 0 C M I |
| 210 | ;; |
| 211 | ld8 u2 = [up], 8 C M01 |
| 212 | ld8 v2 = [vp], 8 C M01 |
| 213 | xor x3 = u3, v3 C M I |
| 214 | ;; |
| 215 | ld8 u3 = [up], 8 C M01 |
| 216 | ld8 v3 = [vp], 8 C M01 |
| 217 | xor x0 = u0, v0 C M I |
| 218 | br.cloop.dptk .grt6 C B |
| 219 | |
| 220 | popcnt c2 = x2 C I0 |
| 221 | xor x1 = u1, v1 C M I |
| 222 | ;; |
| 223 | popcnt c3 = x3 C I0 |
| 224 | xor x2 = u2, v2 C M I |
| 225 | ;; |
| 226 | popcnt c0 = x0 C I0 |
| 227 | xor x3 = u3, v3 C M I |
| 228 | br .Lcj6 C B |
| 229 | |
| 230 | .grt6: ld8 u0 = [up], 8 C M01 |
| 231 | ld8 v0 = [vp], 8 C M01 |
| 232 | popcnt c2 = x2 C I0 |
| 233 | xor x1 = u1, v1 C M I |
| 234 | ;; |
| 235 | ld8 u1 = [up], 8 C M01 |
| 236 | ld8 v1 = [vp], 8 C M01 |
| 237 | popcnt c3 = x3 C I0 |
| 238 | xor x2 = u2, v2 C M I |
| 239 | ;; |
| 240 | ld8 u2 = [up], 8 C M01 |
| 241 | ld8 v2 = [vp], 8 C M01 |
| 242 | popcnt c0 = x0 C I0 |
| 243 | xor x3 = u3, v3 C M I |
| 244 | br .LL10 C B |
| 245 | |
| 246 | |
| 247 | .Lb11: ld8 u2 = [up], 8 C M01 |
| 248 | ld8 v2 = [vp], 8 C M01 |
| 249 | shr.u n = n, 2 C I0 |
| 250 | xor x1 = r10, r11 C M I |
| 251 | ;; |
| 252 | ld8 u3 = [up], 8 C M01 |
| 253 | ld8 v3 = [vp], 8 C M01 |
| 254 | xor x2 = u2, v2 C M I |
| 255 | (p15) br.cond.dptk .grt3 C B |
| 256 | ;; |
| 257 | xor x3 = u3, v3 C M I |
| 258 | ;; |
| 259 | popcnt c1 = x1 C I0 |
| 260 | ;; |
| 261 | popcnt c2 = x2 C I0 |
| 262 | ;; |
| 263 | popcnt c3 = x3 C I0 |
| 264 | ;; |
| 265 | add s = c1, c2 C M I |
| 266 | ;; |
| 267 | add s = s, c3 C M I |
| 268 | br.ret.sptk.many b0 C B |
| 269 | |
| 270 | .grt3: ld8 u0 = [up], 8 C M01 |
| 271 | ld8 v0 = [vp], 8 C M01 |
| 272 | mov.i ar.lc = n C I0 |
| 273 | ;; |
| 274 | ld8 u1 = [up], 8 C M01 |
| 275 | ld8 v1 = [vp], 8 C M01 |
| 276 | mov s = 0 C M I |
| 277 | ;; |
| 278 | ld8 u2 = [up], 8 C M01 |
| 279 | ld8 v2 = [vp], 8 C M01 |
| 280 | xor x3 = u3, v3 C M I |
| 281 | ;; |
| 282 | ld8 u3 = [up], 8 C M01 |
| 283 | ld8 v3 = [vp], 8 C M01 |
| 284 | popcnt c1 = x1 C I0 |
| 285 | xor x0 = u0, v0 C M I |
| 286 | br.cloop.dptk .grt7 C B |
| 287 | popcnt c2 = x2 C I0 |
| 288 | xor x1 = u1, v1 C M I |
| 289 | ;; |
| 290 | popcnt c3 = x3 C I0 |
| 291 | xor x2 = u2, v2 C M I |
| 292 | br .Lcj7 C B |
| 293 | |
| 294 | .grt7: ld8 u0 = [up], 8 C M01 |
| 295 | ld8 v0 = [vp], 8 C M01 |
| 296 | popcnt c2 = x2 C I0 |
| 297 | xor x1 = u1, v1 C M I |
| 298 | ;; |
| 299 | ld8 u1 = [up], 8 C M01 |
| 300 | ld8 v1 = [vp], 8 C M01 |
| 301 | popcnt c3 = x3 C I0 |
| 302 | xor x2 = u2, v2 C M I |
| 303 | br .LL11 C B |
| 304 | |
| 305 | |
| 306 | ALIGN(32) |
| 307 | .Loop: ld8 u0 = [up], 8 C M01 |
| 308 | ld8 v0 = [vp], 8 C M01 |
| 309 | popcnt c2 = x2 C I0 |
| 310 | add s = s, c3 C M I |
| 311 | xor x1 = u1, v1 C M I |
| 312 | nop.b 1 C - |
| 313 | ;; |
| 314 | .LL00: ld8 u1 = [up], 8 C M01 |
| 315 | ld8 v1 = [vp], 8 C M01 |
| 316 | popcnt c3 = x3 C I0 |
| 317 | add s = s, c0 C M I |
| 318 | xor x2 = u2, v2 C M I |
| 319 | nop.b 1 C - |
| 320 | ;; |
| 321 | .LL11: ld8 u2 = [up], 8 C M01 |
| 322 | ld8 v2 = [vp], 8 C M01 |
| 323 | popcnt c0 = x0 C I0 |
| 324 | add s = s, c1 C M I |
| 325 | xor x3 = u3, v3 C M I |
| 326 | nop.b 1 C - |
| 327 | ;; |
| 328 | .LL10: ld8 u3 = [up], 8 C M01 |
| 329 | ld8 v3 = [vp], 8 C M01 |
| 330 | popcnt c1 = x1 C I0 |
| 331 | add s = s, c2 C M I |
| 332 | xor x0 = u0, v0 C M I |
| 333 | br.cloop.dptk .Loop C B |
| 334 | ;; |
| 335 | |
| 336 | .Lend: popcnt c2 = x2 C I0 |
| 337 | add s = s, c3 C M I |
| 338 | xor x1 = u1, v1 C M I |
| 339 | ;; |
| 340 | .Lcj8: popcnt c3 = x3 C I0 |
| 341 | add s = s, c0 C M I |
| 342 | xor x2 = u2, v2 C M I |
| 343 | ;; |
| 344 | .Lcj7: popcnt c0 = x0 C I0 |
| 345 | add s = s, c1 C M I |
| 346 | xor x3 = u3, v3 C M I |
| 347 | ;; |
| 348 | .Lcj6: popcnt c1 = x1 C I0 |
| 349 | add s = s, c2 C M I |
| 350 | ;; |
| 351 | .Lcj5: popcnt c2 = x2 C I0 |
| 352 | add s = s, c3 C M I |
| 353 | ;; |
| 354 | .Lcj4: popcnt c3 = x3 C I0 |
| 355 | add s = s, c0 C M I |
| 356 | ;; |
| 357 | add s = s, c1 C M I |
| 358 | ;; |
| 359 | add s = s, c2 C M I |
| 360 | ;; |
| 361 | add s = s, c3 C M I |
| 362 | mov.i ar.lc = r2 C I0 |
| 363 | br.ret.sptk.many b0 C B |
| 364 | EPILOGUE() |
| 365 | ASM_END() |