isl_union_templ.c

   1 /*
   2  * Copyright 2010      INRIA Saclay
   3  *
   4  * Use of this software is governed by the GNU LGPLv2.1 license
   5  *
   6  * Written by Sven Verdoolaege, INRIA Saclay - Ile-de-France,
   7  * Parc Club Orsay Universite, ZAC des vignes, 4 rue Jacques Monod,
   8  * 91893 Orsay, France
   9  */
  10
  11 #define xFN(TYPE,NAME) TYPE ## _ ## NAME
  12 #define FN(TYPE,NAME) xFN(TYPE,NAME)
  13 #define xS(TYPE,NAME) struct TYPE ## _ ## NAME
  14 #define S(TYPE,NAME) xS(TYPE,NAME)
  15
  16 struct UNION {
  17         int ref;
  18 #ifdef HAS_TYPE
  19         enum isl_fold type;
  20 #endif
  21         isl_space *dim;
  22
  23         struct isl_hash_table   table;
  24 };
  25
  26 __isl_give UNION *FN(UNION,cow)(__isl_take UNION *u);
  27
  28 isl_ctx *FN(UNION,get_ctx)(__isl_keep UNION *u)
  29 {
  30         return u ? u->dim->ctx : NULL;
  31 }
  32
  33 __isl_give isl_space *FN(UNION,get_space)(__isl_keep UNION *u)
  34 {
  35         if (!u)
  36                 return NULL;
  37         return isl_space_copy(u->dim);
  38 }
  39
  40 #ifdef HAS_TYPE
  41 static __isl_give UNION *FN(UNION,alloc)(__isl_take isl_space *dim,
  42         enum isl_fold type, int size)
  43 #else
  44 static __isl_give UNION *FN(UNION,alloc)(__isl_take isl_space *dim, int size)
  45 #endif
  46 {
  47         UNION *u;
  48
  49         dim = isl_space_params(dim);
  50         if (!dim)
  51                 return NULL;
  52
  53         u = isl_calloc_type(dim->ctx, UNION);
  54         if (!u)
  55                 return NULL;
  56
  57         u->ref = 1;
  58 #ifdef HAS_TYPE
  59         u->type = type;
  60 #endif
  61         u->dim = dim;
  62         if (isl_hash_table_init(dim->ctx, &u->table, size) < 0)
  63                 goto error;
  64
  65         return u;
  66 error:
  67         isl_space_free(dim);
  68         FN(UNION,free)(u);
  69         return NULL;
  70 }
  71
  72 #ifdef HAS_TYPE
  73 __isl_give UNION *FN(UNION,zero)(__isl_take isl_space *dim, enum isl_fold type)
  74 {
  75         return FN(UNION,alloc)(dim, type, 16);
  76 }
  77 #else
  78 __isl_give UNION *FN(UNION,zero)(__isl_take isl_space *dim)
  79 {
  80         return FN(UNION,alloc)(dim, 16);
  81 }
  82 #endif
  83
  84 __isl_give UNION *FN(UNION,copy)(__isl_keep UNION *u)
  85 {
  86         if (!u)
  87                 return NULL;
  88
  89         u->ref++;
  90         return u;
  91 }
  92
  93 S(UNION,foreach_data)
  94 {
  95         int (*fn)(__isl_take PART *part, void *user);
  96         void *user;
  97 };
  98
  99 static int call_on_copy(void **entry, void *user)
 100 {
 101         PART *part = *entry;
 102         S(UNION,foreach_data) *data = (S(UNION,foreach_data) *)user;
 103
 104         return data->fn(FN(PART,copy)(part), data->user);
 105 }
 106
 107 int FN(FN(UNION,foreach),PARTS)(__isl_keep UNION *u,
 108         int (*fn)(__isl_take PART *part, void *user), void *user)
 109 {
 110         S(UNION,foreach_data) data = { fn, user };
 111
 112         if (!u)
 113                 return -1;
 114
 115         return isl_hash_table_foreach(u->dim->ctx, &u->table,
 116                                       &call_on_copy, &data);
 117 }
 118
 119 static int has_dim(const void *entry, const void *val)
 120 {
 121         PART *part = (PART *)entry;
 122         isl_space *dim = (isl_space *)val;
 123
 124         return isl_space_is_equal(part->dim, dim);
 125 }
 126
 127 __isl_give PART *FN(FN(UNION,extract),PARTS)(__isl_keep UNION *u,
 128         __isl_take isl_space *dim)
 129 {
 130         uint32_t hash;
 131         struct isl_hash_table_entry *entry;
 132
 133         if (!u || !dim)
 134                 goto error;
 135
 136         hash = isl_space_get_hash(dim);
 137         entry = isl_hash_table_find(u->dim->ctx, &u->table, hash,
 138                                     &has_dim, dim, 0);
 139         if (!entry)
 140 #ifdef HAS_TYPE
 141                 return FN(PART,zero)(dim, u->type);
 142 #else
 143                 return FN(PART,zero)(dim);
 144 #endif
 145         isl_space_free(dim);
 146         return FN(PART,copy)(entry->data);
 147 error:
 148         isl_space_free(dim);
 149         return NULL;
 150 }
 151
 152 __isl_give UNION *FN(FN(UNION,add),PARTS)(__isl_take UNION *u,
 153         __isl_take PART *part)
 154 {
 155         uint32_t hash;
 156         struct isl_hash_table_entry *entry;
 157
 158         if (!part)
 159                 goto error;
 160
 161         if (FN(PART,is_zero)(part)) {
 162                 FN(PART,free)(part);
 163                 return u;
 164         }
 165
 166         u = FN(UNION,cow)(u);
 167
 168         if (!u)
 169                 goto error;
 170
 171         isl_assert(u->dim->ctx, isl_space_match(part->dim, isl_dim_param, u->dim,
 172                                               isl_dim_param), goto error);
 173
 174         hash = isl_space_get_hash(part->dim);
 175         entry = isl_hash_table_find(u->dim->ctx, &u->table, hash,
 176                                     &has_dim, part->dim, 1);
 177         if (!entry)
 178                 goto error;
 179
 180         if (!entry->data)
 181                 entry->data = part;
 182         else {
 183                 entry->data = FN(PART,add)(entry->data, FN(PART,copy)(part));
 184                 if (!entry->data)
 185                         goto error;
 186                 FN(PART,free)(part);
 187                 if (FN(PART,is_zero)(entry->data)) {
 188                         FN(PART,free)(entry->data);
 189                         isl_hash_table_remove(u->dim->ctx, &u->table, entry);
 190                 }
 191         }
 192
 193         return u;
 194 error:
 195         FN(PART,free)(part);
 196         FN(UNION,free)(u);
 197         return NULL;
 198 }
 199
 200 static int add_part(__isl_take PART *part, void *user)
 201 {
 202         UNION **u = (UNION **)user;
 203
 204         *u = FN(FN(UNION,add),PARTS)(*u, part);
 205
 206         return 0;
 207 }
 208
 209 __isl_give UNION *FN(UNION,dup)(__isl_keep UNION *u)
 210 {
 211         UNION *dup;
 212
 213         if (!u)
 214                 return NULL;
 215
 216 #ifdef HAS_TYPE
 217         dup = FN(UNION,zero)(isl_space_copy(u->dim), u->type);
 218 #else
 219         dup = FN(UNION,zero)(isl_space_copy(u->dim));
 220 #endif
 221         if (FN(FN(UNION,foreach),PARTS)(u, &add_part, &dup) < 0)
 222                 goto error;
 223         return dup;
 224 error:
 225         FN(UNION,free)(dup);
 226         return NULL;
 227 }
 228
 229 __isl_give UNION *FN(UNION,cow)(__isl_take UNION *u)
 230 {
 231         if (!u)
 232                 return NULL;
 233
 234         if (u->ref == 1)
 235                 return u;
 236         u->ref--;
 237         return FN(UNION,dup)(u);
 238 }
 239
 240 static int free_u_entry(void **entry, void *user)
 241 {
 242         PART *part = *entry;
 243         FN(PART,free)(part);
 244         return 0;
 245 }
 246
 247 void FN(UNION,free)(__isl_take UNION *u)
 248 {
 249         if (!u)
 250                 return;
 251
 252         if (--u->ref > 0)
 253                 return;
 254
 255         isl_hash_table_foreach(u->dim->ctx, &u->table, &free_u_entry, NULL);
 256         isl_hash_table_clear(&u->table);
 257         isl_space_free(u->dim);
 258         free(u);
 259 }
 260
 261 S(UNION,align) {
 262         isl_reordering *exp;
 263         UNION *res;
 264 };
 265
 266 static int align_entry(__isl_take PART *part, void *user)
 267 {
 268         isl_reordering *exp;
 269         S(UNION,align) *data = user;
 270
 271         exp = isl_reordering_extend_space(isl_reordering_copy(data->exp),
 272                                     FN(PART,get_space)(part));
 273
 274         data->res = FN(FN(UNION,add),PARTS)(data->res,
 275                                             FN(PART,realign)(part, exp));
 276
 277         return 0;
 278 }
 279
 280 __isl_give UNION *FN(UNION,align_params)(__isl_take UNION *u,
 281         __isl_take isl_space *model)
 282 {
 283         S(UNION,align) data = { NULL, NULL };
 284
 285         if (!u || !model)
 286                 goto error;
 287
 288         if (isl_space_match(u->dim, isl_dim_param, model, isl_dim_param)) {
 289                 isl_space_free(model);
 290                 return u;
 291         }
 292
 293         data.exp = isl_parameter_alignment_reordering(u->dim, model);
 294         if (!data.exp)
 295                 goto error;
 296
 297 #ifdef HAS_TYPE
 298         data.res = FN(UNION,alloc)(isl_space_copy(data.exp->dim),
 299                                                 u->type, u->table.n);
 300 #else
 301         data.res = FN(UNION,alloc)(isl_space_copy(data.exp->dim), u->table.n);
 302 #endif
 303         if (FN(FN(UNION,foreach),PARTS)(u, &align_entry, &data) < 0)
 304                 goto error;
 305
 306         isl_reordering_free(data.exp);
 307         FN(UNION,free)(u);
 308         isl_space_free(model);
 309         return data.res;
 310 error:
 311         isl_reordering_free(data.exp);
 312         FN(UNION,free)(u);
 313         FN(UNION,free)(data.res);
 314         isl_space_free(model);
 315         return NULL;
 316 }
 317
 318 __isl_give UNION *FN(UNION,add)(__isl_take UNION *u1, __isl_take UNION *u2)
 319 {
 320         u1 = FN(UNION,align_params)(u1, FN(UNION,get_space)(u2));
 321         u2 = FN(UNION,align_params)(u2, FN(UNION,get_space)(u1));
 322
 323         u1 = FN(UNION,cow)(u1);
 324
 325         if (!u1 || !u2)
 326                 goto error;
 327
 328         if (FN(FN(UNION,foreach),PARTS)(u2, &add_part, &u1) < 0)
 329                 goto error;
 330
 331         FN(UNION,free)(u2);
 332
 333         return u1;
 334 error:
 335         FN(UNION,free)(u1);
 336         FN(UNION,free)(u2);
 337         return NULL;
 338 }
 339
 340 __isl_give UNION *FN(FN(UNION,from),PARTS)(__isl_take PART *part)
 341 {
 342         isl_space *dim;
 343         UNION *u;
 344
 345         if (!part)
 346                 return NULL;
 347
 348         dim = FN(PART,get_space)(part);
 349         dim = isl_space_drop_dims(dim, isl_dim_in, 0, isl_space_dim(dim, isl_dim_in));
 350         dim = isl_space_drop_dims(dim, isl_dim_out, 0, isl_space_dim(dim, isl_dim_out));
 351 #ifdef HAS_TYPE
 352         u = FN(UNION,zero)(dim, part->type);
 353 #else
 354         u = FN(UNION,zero)(dim);
 355 #endif
 356         u = FN(FN(UNION,add),PARTS)(u, part);
 357
 358         return u;
 359 }
 360
 361 S(UNION,match_bin_data) {
 362         UNION *u2;
 363         UNION *res;
 364 };
 365
 366 /* This function is currently only used from isl_polynomial.c
 367  * and not from isl_fold.c.
 368  */
 369 static __isl_give UNION *match_bin_op(__isl_take UNION *u1,
 370         __isl_take UNION *u2,
 371         int (*fn)(void **, void *)) __attribute__ ((unused));
 372 static __isl_give UNION *match_bin_op(__isl_take UNION *u1,
 373         __isl_take UNION *u2, int (*fn)(void **, void *))
 374 {
 375         S(UNION,match_bin_data) data = { NULL, NULL };
 376
 377         u1 = FN(UNION,align_params)(u1, FN(UNION,get_space)(u2));
 378         u2 = FN(UNION,align_params)(u2, FN(UNION,get_space)(u1));
 379
 380         if (!u1 || !u2)
 381                 goto error;
 382
 383         data.u2 = u2;
 384 #ifdef HAS_TYPE
 385         data.res = FN(UNION,alloc)(isl_space_copy(u1->dim), u1->type, u1->table.n);
 386 #else
 387         data.res = FN(UNION,alloc)(isl_space_copy(u1->dim), u1->table.n);
 388 #endif
 389         if (isl_hash_table_foreach(u1->dim->ctx, &u1->table, fn, &data) < 0)
 390                 goto error;
 391
 392         FN(UNION,free)(u1);
 393         FN(UNION,free)(u2);
 394         return data.res;
 395 error:
 396         FN(UNION,free)(u1);
 397         FN(UNION,free)(u2);
 398         FN(UNION,free)(data.res);
 399         return NULL;
 400 }
 401
 402 S(UNION,match_set_data) {
 403         isl_union_set *uset;
 404         UNION *res;
 405         __isl_give PW *(*fn)(__isl_take PW*, __isl_take isl_set*);
 406 };
 407
 408 static int set_has_dim(const void *entry, const void *val)
 409 {
 410         isl_set *set = (isl_set *)entry;
 411         isl_space *dim = (isl_space *)val;
 412
 413         return isl_space_is_equal(set->dim, dim);
 414 }
 415
 416 static int match_set_entry(void **entry, void *user)
 417 {
 418         S(UNION,match_set_data) *data = user;
 419         uint32_t hash;
 420         struct isl_hash_table_entry *entry2;
 421         PW *pw = *entry;
 422         int empty;
 423
 424         hash = isl_space_get_hash(pw->dim);
 425         entry2 = isl_hash_table_find(data->uset->dim->ctx, &data->uset->table,
 426                                      hash, &set_has_dim, pw->dim, 0);
 427         if (!entry2)
 428                 return 0;
 429
 430         pw = FN(PW,copy)(pw);
 431         pw = data->fn(pw, isl_set_copy(entry2->data));
 432
 433         empty = FN(PW,is_zero)(pw);
 434         if (empty < 0) {
 435                 FN(PW,free)(pw);
 436                 return -1;
 437         }
 438         if (empty) {
 439                 FN(PW,free)(pw);
 440                 return 0;
 441         }
 442
 443         data->res = FN(FN(UNION,add),PARTS)(data->res, pw);
 444
 445         return 0;
 446 }
 447
 448 static __isl_give UNION *match_set_op(__isl_take UNION *u,
 449         __isl_take isl_union_set *uset,
 450         __isl_give PW *(*fn)(__isl_take PW*, __isl_take isl_set*))
 451 {
 452         S(UNION,match_set_data) data = { NULL, NULL, fn };
 453
 454         u = FN(UNION,align_params)(u, isl_union_set_get_space(uset));
 455         uset = isl_union_set_align_params(uset, FN(UNION,get_space)(u));
 456
 457         if (!u || !uset)
 458                 goto error;
 459
 460         data.uset = uset;
 461 #ifdef HAS_TYPE
 462         data.res = FN(UNION,alloc)(isl_space_copy(u->dim), u->type, u->table.n);
 463 #else
 464         data.res = FN(UNION,alloc)(isl_space_copy(u->dim), u->table.n);
 465 #endif
 466         if (isl_hash_table_foreach(u->dim->ctx, &u->table,
 467                                    &match_set_entry, &data) < 0)
 468                 goto error;
 469
 470         FN(UNION,free)(u);
 471         isl_union_set_free(uset);
 472         return data.res;
 473 error:
 474         FN(UNION,free)(u);
 475         isl_union_set_free(uset);
 476         FN(UNION,free)(data.res);
 477         return NULL;
 478 }
 479
 480 __isl_give UNION *FN(UNION,intersect_domain)(__isl_take UNION *u,
 481         __isl_take isl_union_set *uset)
 482 {
 483         return match_set_op(u, uset, &FN(PW,intersect_domain));
 484 }
 485
 486 __isl_give UNION *FN(UNION,gist)(__isl_take UNION *u,
 487         __isl_take isl_union_set *uset)
 488 {
 489         return match_set_op(u, uset, &FN(PW,gist));
 490 }
 491
 492 __isl_give isl_qpolynomial *FN(UNION,eval)(__isl_take UNION *u,
 493         __isl_take isl_point *pnt)
 494 {
 495         uint32_t hash;
 496         struct isl_hash_table_entry *entry;
 497         isl_qpolynomial *qp;
 498
 499         if (!u || !pnt)
 500                 goto error;
 501
 502         hash = isl_space_get_hash(pnt->dim);
 503         entry = isl_hash_table_find(u->dim->ctx, &u->table,
 504                                     hash, &has_dim, pnt->dim, 0);
 505         if (!entry) {
 506                 qp = isl_qpolynomial_zero(isl_space_copy(pnt->dim));
 507                 isl_point_free(pnt);
 508         } else {
 509                 qp = FN(PART,eval)(FN(PART,copy)(entry->data), pnt);
 510         }
 511         FN(UNION,free)(u);
 512         return qp;
 513 error:
 514         FN(UNION,free)(u);
 515         isl_point_free(pnt);
 516         return NULL;
 517 }
 518
 519 static int coalesce_entry(void **entry, void *user)
 520 {
 521         PW **pw = (PW **)entry;
 522
 523         *pw = FN(PW,coalesce)(*pw);
 524         if (!*pw)
 525                 return -1;
 526
 527         return 0;
 528 }
 529
 530 __isl_give UNION *FN(UNION,coalesce)(__isl_take UNION *u)
 531 {
 532         if (!u)
 533                 return NULL;
 534
 535         if (isl_hash_table_foreach(u->dim->ctx, &u->table,
 536                                    &coalesce_entry, NULL) < 0)
 537                 goto error;
 538
 539         return u;
 540 error:
 541         FN(UNION,free)(u);
 542         return NULL;
 543 }
 544
 545 static int domain(__isl_take PART *part, void *user)
 546 {
 547         isl_union_set **uset = (isl_union_set **)user;
 548
 549         *uset = isl_union_set_add_set(*uset, FN(PART,domain)(part));
 550
 551         return 0;
 552 }
 553
 554 __isl_give isl_union_set *FN(UNION,domain)(__isl_take UNION *u)
 555 {
 556         isl_union_set *uset;
 557
 558         uset = isl_union_set_empty(FN(UNION,get_space)(u));
 559         if (FN(FN(UNION,foreach),PARTS)(u, &domain, &uset) < 0)
 560                 goto error;
 561
 562         FN(UNION,free)(u);
 563
 564         return uset;
 565 error:
 566         isl_union_set_free(uset);
 567         FN(UNION,free)(u);
 568         return NULL;
 569 }
 570
 571 static int mul_isl_int(void **entry, void *user)
 572 {
 573         PW **pw = (PW **)entry;
 574         isl_int *v = user;
 575
 576         *pw = FN(PW,mul_isl_int)(*pw, *v);
 577         if (!*pw)
 578                 return -1;
 579
 580         return 0;
 581 }
 582
 583 __isl_give UNION *FN(UNION,mul_isl_int)(__isl_take UNION *u, isl_int v)
 584 {
 585         if (isl_int_is_one(v))
 586                 return u;
 587
 588         if (u && isl_int_is_zero(v)) {
 589                 UNION *zero;
 590                 isl_space *dim = FN(UNION,get_space)(u);
 591 #ifdef HAS_TYPE
 592                 zero = FN(UNION,zero)(dim, u->type);
 593 #else
 594                 zero = FN(UNION,zero)(dim);
 595 #endif
 596                 FN(UNION,free)(u);
 597                 return zero;
 598         }
 599
 600         u = FN(UNION,cow)(u);
 601         if (!u)
 602                 return NULL;
 603
 604 #ifdef HAS_TYPE
 605         if (isl_int_is_neg(v))
 606                 u->type = isl_fold_type_negate(u->type);
 607 #endif
 608         if (isl_hash_table_foreach(u->dim->ctx, &u->table, &mul_isl_int, v) < 0)
 609                 goto error;
 610
 611         return u;
 612 error:
 613         FN(UNION,free)(u);
 614         return NULL;
 615 }