isl_union_map.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 #include <isl_ctx.h>
  12 #include <isl_hash.h>
  13 #include <isl_map.h>
  14 #include <isl_set.h>
  15 #include <isl_dim_private.h>
  16 #include <isl_map_private.h>
  17 #include <isl_union_map_private.h>
  18 #include <isl_union_set.h>
  19
  20 static __isl_give isl_union_map *isl_union_map_alloc(__isl_take isl_dim *dim,
  21         int size)
  22 {
  23         isl_union_map *umap;
  24
  25         if (!dim)
  26                 return NULL;
  27
  28         umap = isl_calloc_type(dim->ctx, isl_union_map);
  29         if (!umap)
  30                 return NULL;
  31
  32         umap->ref = 1;
  33         umap->dim = dim;
  34         if (isl_hash_table_init(dim->ctx, &umap->table, size) < 0)
  35                 goto error;
  36
  37         return umap;
  38 error:
  39         isl_dim_free(dim);
  40         isl_union_map_free(umap);
  41         return NULL;
  42 }
  43
  44 __isl_give isl_union_map *isl_union_map_empty(__isl_take isl_dim *dim)
  45 {
  46         return isl_union_map_alloc(dim, 16);
  47 }
  48
  49 __isl_give isl_union_set *isl_union_set_empty(__isl_take isl_dim *dim)
  50 {
  51         return isl_union_map_empty(dim);
  52 }
  53
  54 isl_ctx *isl_union_map_get_ctx(__isl_keep isl_union_map *umap)
  55 {
  56         return umap ? umap->dim->ctx : NULL;
  57 }
  58
  59 isl_ctx *isl_union_set_get_ctx(__isl_keep isl_union_set *uset)
  60 {
  61         return uset ? uset->dim->ctx : NULL;
  62 }
  63
  64 __isl_give isl_dim *isl_union_map_get_dim(__isl_keep isl_union_map *umap)
  65 {
  66         if (!umap)
  67                 return NULL;
  68         return isl_dim_copy(umap->dim);
  69 }
  70
  71 __isl_give isl_dim *isl_union_set_get_dim(__isl_keep isl_union_set *uset)
  72 {
  73         return isl_union_map_get_dim(uset);
  74 }
  75
  76 static int free_umap_entry(void **entry, void *user)
  77 {
  78         isl_map *map = *entry;
  79         isl_map_free(map);
  80         return 0;
  81 }
  82
  83 static int add_map(__isl_take isl_map *map, void *user)
  84 {
  85         isl_union_map **umap = (isl_union_map **)user;
  86
  87         *umap = isl_union_map_add_map(*umap, map);
  88
  89         return 0;
  90 }
  91
  92 __isl_give isl_union_map *isl_union_map_dup(__isl_keep isl_union_map *umap)
  93 {
  94         isl_union_map *dup;
  95
  96         if (!umap)
  97                 return NULL;
  98
  99         dup = isl_union_map_empty(isl_dim_copy(umap->dim));
 100         if (isl_union_map_foreach_map(umap, &add_map, &dup) < 0)
 101                 goto error;
 102         return dup;
 103 error:
 104         isl_union_map_free(dup);
 105         return NULL;
 106 }
 107
 108 __isl_give isl_union_map *isl_union_map_cow(__isl_take isl_union_map *umap)
 109 {
 110         if (!umap)
 111                 return NULL;
 112
 113         if (umap->ref == 1)
 114                 return umap;
 115         umap->ref--;
 116         return isl_union_map_dup(umap);
 117 }
 118
 119 struct isl_union_align {
 120         isl_reordering *exp;
 121         isl_union_map *res;
 122 };
 123
 124 static int align_entry(void **entry, void *user)
 125 {
 126         isl_map *map = *entry;
 127         isl_reordering *exp;
 128         struct isl_union_align *data = user;
 129
 130         exp = isl_reordering_extend_dim(isl_reordering_copy(data->exp),
 131                                     isl_map_get_dim(map));
 132
 133         data->res = isl_union_map_add_map(data->res,
 134                                         isl_map_realign(isl_map_copy(map), exp));
 135
 136         return 0;
 137 }
 138
 139 /* Align the parameters of umap along those of model.
 140  * The result has the parameters of model first, in the same order
 141  * as they appear in model, followed by any remaining parameters of
 142  * umap that do not appear in model.
 143  */
 144 __isl_give isl_union_map *isl_union_map_align_params(
 145         __isl_take isl_union_map *umap, __isl_take isl_dim *model)
 146 {
 147         struct isl_union_align data = { NULL, NULL };
 148
 149         if (!umap || !model)
 150                 goto error;
 151
 152         if (isl_dim_match(umap->dim, isl_dim_param, model, isl_dim_param)) {
 153                 isl_dim_free(model);
 154                 return umap;
 155         }
 156
 157         data.exp = isl_parameter_alignment_reordering(umap->dim, model);
 158         if (!data.exp)
 159                 goto error;
 160
 161         data.res = isl_union_map_alloc(isl_dim_copy(data.exp->dim),
 162                                         umap->table.n);
 163         if (isl_hash_table_foreach(umap->dim->ctx, &umap->table,
 164                                         &align_entry, &data) < 0)
 165                 goto error;
 166
 167         isl_reordering_free(data.exp);
 168         isl_union_map_free(umap);
 169         isl_dim_free(model);
 170         return data.res;
 171 error:
 172         isl_reordering_free(data.exp);
 173         isl_union_map_free(umap);
 174         isl_union_map_free(data.res);
 175         isl_dim_free(model);
 176         return NULL;
 177 }
 178
 179 __isl_give isl_union_set *isl_union_set_align_params(
 180         __isl_take isl_union_set *uset, __isl_take isl_dim *model)
 181 {
 182         return isl_union_map_align_params(uset, model);
 183 }
 184
 185 __isl_give isl_union_map *isl_union_map_union(__isl_take isl_union_map *umap1,
 186         __isl_take isl_union_map *umap2)
 187 {
 188         umap1 = isl_union_map_align_params(umap1, isl_union_map_get_dim(umap2));
 189         umap2 = isl_union_map_align_params(umap2, isl_union_map_get_dim(umap1));
 190
 191         umap1 = isl_union_map_cow(umap1);
 192
 193         if (!umap1 || !umap2)
 194                 goto error;
 195
 196         if (isl_union_map_foreach_map(umap2, &add_map, &umap1) < 0)
 197                 goto error;
 198
 199         isl_union_map_free(umap2);
 200
 201         return umap1;
 202 error:
 203         isl_union_map_free(umap1);
 204         isl_union_map_free(umap2);
 205         return NULL;
 206 }
 207
 208 __isl_give isl_union_set *isl_union_set_union(__isl_take isl_union_set *uset1,
 209         __isl_take isl_union_set *uset2)
 210 {
 211         return isl_union_map_union(uset1, uset2);
 212 }
 213
 214 __isl_give isl_union_map *isl_union_map_copy(__isl_keep isl_union_map *umap)
 215 {
 216         if (!umap)
 217                 return NULL;
 218
 219         umap->ref++;
 220         return umap;
 221 }
 222
 223 __isl_give isl_union_set *isl_union_set_copy(__isl_keep isl_union_set *uset)
 224 {
 225         return isl_union_map_copy(uset);
 226 }
 227
 228 void isl_union_map_free(__isl_take isl_union_map *umap)
 229 {
 230         if (!umap)
 231                 return;
 232
 233         if (--umap->ref > 0)
 234                 return;
 235
 236         isl_hash_table_foreach(umap->dim->ctx, &umap->table,
 237                                &free_umap_entry, NULL);
 238         isl_hash_table_clear(&umap->table);
 239         isl_dim_free(umap->dim);
 240         free(umap);
 241 }
 242
 243 void isl_union_set_free(__isl_take isl_union_set *uset)
 244 {
 245         isl_union_map_free(uset);
 246 }
 247
 248 static int has_dim(const void *entry, const void *val)
 249 {
 250         isl_map *map = (isl_map *)entry;
 251         isl_dim *dim = (isl_dim *)val;
 252
 253         return isl_dim_equal(map->dim, dim);
 254 }
 255
 256 __isl_give isl_union_map *isl_union_map_add_map(__isl_take isl_union_map *umap,
 257         __isl_take isl_map *map)
 258 {
 259         uint32_t hash;
 260         struct isl_hash_table_entry *entry;
 261
 262         if (isl_map_fast_is_empty(map)) {
 263                 isl_map_free(map);
 264                 return umap;
 265         }
 266
 267         umap = isl_union_map_cow(umap);
 268
 269         if (!map || !umap)
 270                 goto error;
 271
 272         isl_assert(map->ctx, isl_dim_match(map->dim, isl_dim_param, umap->dim,
 273                                            isl_dim_param), goto error);
 274
 275         hash = isl_dim_get_hash(map->dim);
 276         entry = isl_hash_table_find(umap->dim->ctx, &umap->table, hash,
 277                                     &has_dim, map->dim, 1);
 278         if (!entry)
 279                 goto error;
 280
 281         if (!entry->data)
 282                 entry->data = map;
 283         else {
 284                 entry->data = isl_map_union(entry->data, isl_map_copy(map));
 285                 if (!entry->data)
 286                         goto error;
 287                 isl_map_free(map);
 288         }
 289
 290         return umap;
 291 error:
 292         isl_map_free(map);
 293         isl_union_map_free(umap);
 294         return NULL;
 295 }
 296
 297 __isl_give isl_union_set *isl_union_set_add_set(__isl_take isl_union_set *uset,
 298         __isl_take isl_set *set)
 299 {
 300         return isl_union_map_add_map(uset, (isl_map *)set);
 301 }
 302
 303 __isl_give isl_union_map *isl_union_map_from_map(__isl_take isl_map *map)
 304 {
 305         isl_dim *dim;
 306         isl_union_map *umap;
 307
 308         if (!map)
 309                 return NULL;
 310
 311         dim = isl_map_get_dim(map);
 312         dim = isl_dim_drop(dim, isl_dim_in, 0, isl_dim_size(dim, isl_dim_in));
 313         dim = isl_dim_drop(dim, isl_dim_out, 0, isl_dim_size(dim, isl_dim_out));
 314         umap = isl_union_map_empty(dim);
 315         umap = isl_union_map_add_map(umap, map);
 316
 317         return umap;
 318 }
 319
 320 __isl_give isl_union_set *isl_union_set_from_set(__isl_take isl_set *set)
 321 {
 322         return isl_union_map_from_map((isl_map *)set);
 323 }
 324
 325 struct isl_union_map_foreach_data
 326 {
 327         int (*fn)(__isl_take isl_map *map, void *user);
 328         void *user;
 329 };
 330
 331 static int call_on_copy(void **entry, void *user)
 332 {
 333         isl_map *map = *entry;
 334         struct isl_union_map_foreach_data *data;
 335         data = (struct isl_union_map_foreach_data *)user;
 336
 337         return data->fn(isl_map_copy(map), data->user);
 338 }
 339
 340 int isl_union_map_n_map(__isl_keep isl_union_map *umap)
 341 {
 342         return umap ? umap->table.n : 0;
 343 }
 344
 345 int isl_union_set_n_set(__isl_keep isl_union_set *uset)
 346 {
 347         return uset ? uset->table.n : 0;
 348 }
 349
 350 int isl_union_map_foreach_map(__isl_keep isl_union_map *umap,
 351         int (*fn)(__isl_take isl_map *map, void *user), void *user)
 352 {
 353         struct isl_union_map_foreach_data data = { fn, user };
 354
 355         if (!umap)
 356                 return -1;
 357
 358         return isl_hash_table_foreach(umap->dim->ctx, &umap->table,
 359                                       &call_on_copy, &data);
 360 }
 361
 362 __isl_give isl_map *isl_union_map_extract_map(__isl_keep isl_union_map *umap,
 363         __isl_take isl_dim *dim)
 364 {
 365         uint32_t hash;
 366         struct isl_hash_table_entry *entry;
 367
 368         if (!umap || !dim)
 369                 goto error;
 370
 371         hash = isl_dim_get_hash(dim);
 372         entry = isl_hash_table_find(umap->dim->ctx, &umap->table, hash,
 373                                     &has_dim, dim, 0);
 374         if (!entry)
 375                 return isl_map_empty(dim);
 376         isl_dim_free(dim);
 377         return isl_map_copy(entry->data);
 378 error:
 379         isl_dim_free(dim);
 380         return NULL;
 381 }
 382
 383 __isl_give isl_set *isl_union_set_extract_set(__isl_keep isl_union_set *uset,
 384         __isl_take isl_dim *dim)
 385 {
 386         return (isl_set *)isl_union_map_extract_map(uset, dim);
 387 }
 388
 389 int isl_union_set_foreach_set(__isl_keep isl_union_set *uset,
 390         int (*fn)(__isl_take isl_set *set, void *user), void *user)
 391 {
 392         return isl_union_map_foreach_map(uset,
 393                 (int(*)(__isl_take isl_map *, void*))fn, user);
 394 }
 395
 396 struct isl_union_set_foreach_point_data {
 397         int (*fn)(__isl_take isl_point *pnt, void *user);
 398         void *user;
 399 };
 400
 401 static int foreach_point(__isl_take isl_set *set, void *user)
 402 {
 403         struct isl_union_set_foreach_point_data *data = user;
 404         int r;
 405
 406         r = isl_set_foreach_point(set, data->fn, data->user);
 407         isl_set_free(set);
 408
 409         return r;
 410 }
 411
 412 int isl_union_set_foreach_point(__isl_keep isl_union_set *uset,
 413         int (*fn)(__isl_take isl_point *pnt, void *user), void *user)
 414 {
 415         struct isl_union_set_foreach_point_data data = { fn, user };
 416         return isl_union_set_foreach_set(uset, &foreach_point, &data);
 417 }
 418
 419 struct isl_union_map_gen_bin_data {
 420         isl_union_map *umap2;
 421         isl_union_map *res;
 422 };
 423
 424 static int subtract_entry(void **entry, void *user)
 425 {
 426         struct isl_union_map_gen_bin_data *data = user;
 427         uint32_t hash;
 428         struct isl_hash_table_entry *entry2;
 429         isl_map *map = *entry;
 430
 431         hash = isl_dim_get_hash(map->dim);
 432         entry2 = isl_hash_table_find(data->umap2->dim->ctx, &data->umap2->table,
 433                                      hash, &has_dim, map->dim, 0);
 434         map = isl_map_copy(map);
 435         if (entry2) {
 436                 int empty;
 437                 map = isl_map_subtract(map, isl_map_copy(entry2->data));
 438
 439                 empty = isl_map_is_empty(map);
 440                 if (empty < 0) {
 441                         isl_map_free(map);
 442                         return -1;
 443                 }
 444                 if (empty) {
 445                         isl_map_free(map);
 446                         return 0;
 447                 }
 448         }
 449         data->res = isl_union_map_add_map(data->res, map);
 450
 451         return 0;
 452 }
 453
 454 static __isl_give isl_union_map *gen_bin_op(__isl_take isl_union_map *umap1,
 455         __isl_take isl_union_map *umap2, int (*fn)(void **, void *))
 456 {
 457         struct isl_union_map_gen_bin_data data = { NULL, NULL };
 458
 459         umap1 = isl_union_map_align_params(umap1, isl_union_map_get_dim(umap2));
 460         umap2 = isl_union_map_align_params(umap2, isl_union_map_get_dim(umap1));
 461
 462         if (!umap1 || !umap2)
 463                 goto error;
 464
 465         data.umap2 = umap2;
 466         data.res = isl_union_map_alloc(isl_dim_copy(umap1->dim),
 467                                        umap1->table.n);
 468         if (isl_hash_table_foreach(umap1->dim->ctx, &umap1->table,
 469                                    fn, &data) < 0)
 470                 goto error;
 471
 472         isl_union_map_free(umap1);
 473         isl_union_map_free(umap2);
 474         return data.res;
 475 error:
 476         isl_union_map_free(umap1);
 477         isl_union_map_free(umap2);
 478         isl_union_map_free(data.res);
 479         return NULL;
 480 }
 481
 482 __isl_give isl_union_map *isl_union_map_subtract(
 483         __isl_take isl_union_map *umap1, __isl_take isl_union_map *umap2)
 484 {
 485         return gen_bin_op(umap1, umap2, &subtract_entry);
 486 }
 487
 488 __isl_give isl_union_set *isl_union_set_subtract(
 489         __isl_take isl_union_set *uset1, __isl_take isl_union_set *uset2)
 490 {
 491         return isl_union_map_subtract(uset1, uset2);
 492 }
 493
 494 struct isl_union_map_match_bin_data {
 495         isl_union_map *umap2;
 496         isl_union_map *res;
 497         __isl_give isl_map *(*fn)(__isl_take isl_map*, __isl_take isl_map*);
 498 };
 499
 500 static int match_bin_entry(void **entry, void *user)
 501 {
 502         struct isl_union_map_match_bin_data *data = user;
 503         uint32_t hash;
 504         struct isl_hash_table_entry *entry2;
 505         isl_map *map = *entry;
 506         int empty;
 507
 508         hash = isl_dim_get_hash(map->dim);
 509         entry2 = isl_hash_table_find(data->umap2->dim->ctx, &data->umap2->table,
 510                                      hash, &has_dim, map->dim, 0);
 511         if (!entry2)
 512                 return 0;
 513
 514         map = isl_map_copy(map);
 515         map = data->fn(map, isl_map_copy(entry2->data));
 516
 517         empty = isl_map_is_empty(map);
 518         if (empty < 0) {
 519                 isl_map_free(map);
 520                 return -1;
 521         }
 522         if (empty) {
 523                 isl_map_free(map);
 524                 return 0;
 525         }
 526
 527         data->res = isl_union_map_add_map(data->res, map);
 528
 529         return 0;
 530 }
 531
 532 static __isl_give isl_union_map *match_bin_op(__isl_take isl_union_map *umap1,
 533         __isl_take isl_union_map *umap2,
 534         __isl_give isl_map *(*fn)(__isl_take isl_map*, __isl_take isl_map*))
 535 {
 536         struct isl_union_map_match_bin_data data = { NULL, NULL, fn };
 537
 538         umap1 = isl_union_map_align_params(umap1, isl_union_map_get_dim(umap2));
 539         umap2 = isl_union_map_align_params(umap2, isl_union_map_get_dim(umap1));
 540
 541         if (!umap1 || !umap2)
 542                 goto error;
 543
 544         data.umap2 = umap2;
 545         data.res = isl_union_map_alloc(isl_dim_copy(umap1->dim),
 546                                        umap1->table.n);
 547         if (isl_hash_table_foreach(umap1->dim->ctx, &umap1->table,
 548                                    &match_bin_entry, &data) < 0)
 549                 goto error;
 550
 551         isl_union_map_free(umap1);
 552         isl_union_map_free(umap2);
 553         return data.res;
 554 error:
 555         isl_union_map_free(umap1);
 556         isl_union_map_free(umap2);
 557         isl_union_map_free(data.res);
 558         return NULL;
 559 }
 560
 561 __isl_give isl_union_map *isl_union_map_intersect(
 562         __isl_take isl_union_map *umap1, __isl_take isl_union_map *umap2)
 563 {
 564         return match_bin_op(umap1, umap2, &isl_map_intersect);
 565 }
 566
 567 __isl_give isl_union_set *isl_union_set_intersect(
 568         __isl_take isl_union_set *uset1, __isl_take isl_union_set *uset2)
 569 {
 570         return isl_union_map_intersect(uset1, uset2);
 571 }
 572
 573 __isl_give isl_union_map *isl_union_map_gist(__isl_take isl_union_map *umap,
 574         __isl_take isl_union_map *context)
 575 {
 576         return match_bin_op(umap, context, &isl_map_gist);
 577 }
 578
 579 __isl_give isl_union_set *isl_union_set_gist(__isl_take isl_union_set *uset,
 580         __isl_take isl_union_set *context)
 581 {
 582         return isl_union_map_gist(uset, context);
 583 }
 584
 585 static __isl_give isl_map *lex_le_set(__isl_take isl_map *set1,
 586         __isl_take isl_map *set2)
 587 {
 588         return isl_set_lex_le_set((isl_set *)set1, (isl_set *)set2);
 589 }
 590
 591 static __isl_give isl_map *lex_lt_set(__isl_take isl_map *set1,
 592         __isl_take isl_map *set2)
 593 {
 594         return isl_set_lex_lt_set((isl_set *)set1, (isl_set *)set2);
 595 }
 596
 597 __isl_give isl_union_map *isl_union_set_lex_lt_union_set(
 598         __isl_take isl_union_set *uset1, __isl_take isl_union_set *uset2)
 599 {
 600         return match_bin_op(uset1, uset2, &lex_lt_set);
 601 }
 602
 603 __isl_give isl_union_map *isl_union_set_lex_le_union_set(
 604         __isl_take isl_union_set *uset1, __isl_take isl_union_set *uset2)
 605 {
 606         return match_bin_op(uset1, uset2, &lex_le_set);
 607 }
 608
 609 __isl_give isl_union_map *isl_union_set_lex_gt_union_set(
 610         __isl_take isl_union_set *uset1, __isl_take isl_union_set *uset2)
 611 {
 612         return isl_union_set_lex_lt_union_set(uset2, uset1);
 613 }
 614
 615 __isl_give isl_union_map *isl_union_set_lex_ge_union_set(
 616         __isl_take isl_union_set *uset1, __isl_take isl_union_set *uset2)
 617 {
 618         return isl_union_set_lex_le_union_set(uset2, uset1);
 619 }
 620
 621 __isl_give isl_union_map *isl_union_map_lex_gt_union_map(
 622         __isl_take isl_union_map *umap1, __isl_take isl_union_map *umap2)
 623 {
 624         return isl_union_map_lex_lt_union_map(umap2, umap1);
 625 }
 626
 627 __isl_give isl_union_map *isl_union_map_lex_ge_union_map(
 628         __isl_take isl_union_map *umap1, __isl_take isl_union_map *umap2)
 629 {
 630         return isl_union_map_lex_le_union_map(umap2, umap1);
 631 }
 632
 633 static int intersect_domain_entry(void **entry, void *user)
 634 {
 635         struct isl_union_map_gen_bin_data *data = user;
 636         uint32_t hash;
 637         struct isl_hash_table_entry *entry2;
 638         isl_dim *dim;
 639         isl_map *map = *entry;
 640         int empty;
 641
 642         dim = isl_map_get_dim(map);
 643         dim = isl_dim_domain(dim);
 644         hash = isl_dim_get_hash(dim);
 645         entry2 = isl_hash_table_find(data->umap2->dim->ctx, &data->umap2->table,
 646                                      hash, &has_dim, dim, 0);
 647         isl_dim_free(dim);
 648         if (!entry2)
 649                 return 0;
 650
 651         map = isl_map_copy(map);
 652         map = isl_map_intersect_domain(map, isl_set_copy(entry2->data));
 653
 654         empty = isl_map_is_empty(map);
 655         if (empty < 0) {
 656                 isl_map_free(map);
 657                 return -1;
 658         }
 659         if (empty) {
 660                 isl_map_free(map);
 661                 return 0;
 662         }
 663
 664         data->res = isl_union_map_add_map(data->res, map);
 665
 666         return 0;
 667 }
 668
 669 __isl_give isl_union_map *isl_union_map_intersect_domain(
 670         __isl_take isl_union_map *umap, __isl_take isl_union_set *uset)
 671 {
 672         return gen_bin_op(umap, uset, &intersect_domain_entry);
 673 }
 674
 675 struct isl_union_map_bin_data {
 676         isl_union_map *umap2;
 677         isl_union_map *res;
 678         isl_map *map;
 679         int (*fn)(void **entry, void *user);
 680 };
 681
 682 static int apply_range_entry(void **entry, void *user)
 683 {
 684         struct isl_union_map_bin_data *data = user;
 685         isl_map *map2 = *entry;
 686         int empty;
 687
 688         if (!isl_dim_tuple_match(data->map->dim, isl_dim_out,
 689                                  map2->dim, isl_dim_in))
 690                 return 0;
 691
 692         map2 = isl_map_apply_range(isl_map_copy(data->map), isl_map_copy(map2));
 693
 694         empty = isl_map_is_empty(map2);
 695         if (empty < 0) {
 696                 isl_map_free(map2);
 697                 return -1;
 698         }
 699         if (empty) {
 700                 isl_map_free(map2);
 701                 return 0;
 702         }
 703
 704         data->res = isl_union_map_add_map(data->res, map2);
 705
 706         return 0;
 707 }
 708
 709 static int bin_entry(void **entry, void *user)
 710 {
 711         struct isl_union_map_bin_data *data = user;
 712         isl_map *map = *entry;
 713
 714         data->map = map;
 715         if (isl_hash_table_foreach(data->umap2->dim->ctx, &data->umap2->table,
 716                                    data->fn, data) < 0)
 717                 return -1;
 718
 719         return 0;
 720 }
 721
 722 static __isl_give isl_union_map *bin_op(__isl_take isl_union_map *umap1,
 723         __isl_take isl_union_map *umap2, int (*fn)(void **entry, void *user))
 724 {
 725         struct isl_union_map_bin_data data = { NULL, NULL, NULL, fn };
 726
 727         umap1 = isl_union_map_align_params(umap1, isl_union_map_get_dim(umap2));
 728         umap2 = isl_union_map_align_params(umap2, isl_union_map_get_dim(umap1));
 729
 730         if (!umap1 || !umap2)
 731                 goto error;
 732
 733         data.umap2 = umap2;
 734         data.res = isl_union_map_alloc(isl_dim_copy(umap1->dim),
 735                                        umap1->table.n);
 736         if (isl_hash_table_foreach(umap1->dim->ctx, &umap1->table,
 737                                    &bin_entry, &data) < 0)
 738                 goto error;
 739
 740         isl_union_map_free(umap1);
 741         isl_union_map_free(umap2);
 742         return data.res;
 743 error:
 744         isl_union_map_free(umap1);
 745         isl_union_map_free(umap2);
 746         isl_union_map_free(data.res);
 747         return NULL;
 748 }
 749
 750 __isl_give isl_union_map *isl_union_map_apply_range(
 751         __isl_take isl_union_map *umap1, __isl_take isl_union_map *umap2)
 752 {
 753         return bin_op(umap1, umap2, &apply_range_entry);
 754 }
 755
 756 __isl_give isl_union_map *isl_union_map_apply_domain(
 757         __isl_take isl_union_map *umap1, __isl_take isl_union_map *umap2)
 758 {
 759         umap1 = isl_union_map_reverse(umap1);
 760         umap1 = isl_union_map_apply_range(umap1, umap2);
 761         return isl_union_map_reverse(umap1);
 762 }
 763
 764 __isl_give isl_union_set *isl_union_set_apply(
 765         __isl_take isl_union_set *uset, __isl_take isl_union_map *umap)
 766 {
 767         return isl_union_map_apply_range(uset, umap);
 768 }
 769
 770 static int map_lex_lt_entry(void **entry, void *user)
 771 {
 772         struct isl_union_map_bin_data *data = user;
 773         isl_map *map2 = *entry;
 774
 775         if (!isl_dim_tuple_match(data->map->dim, isl_dim_out,
 776                                  map2->dim, isl_dim_out))
 777                 return 0;
 778
 779         map2 = isl_map_lex_lt_map(isl_map_copy(data->map), isl_map_copy(map2));
 780
 781         data->res = isl_union_map_add_map(data->res, map2);
 782
 783         return 0;
 784 }
 785
 786 __isl_give isl_union_map *isl_union_map_lex_lt_union_map(
 787         __isl_take isl_union_map *umap1, __isl_take isl_union_map *umap2)
 788 {
 789         return bin_op(umap1, umap2, &map_lex_lt_entry);
 790 }
 791
 792 static int map_lex_le_entry(void **entry, void *user)
 793 {
 794         struct isl_union_map_bin_data *data = user;
 795         isl_map *map2 = *entry;
 796
 797         if (!isl_dim_tuple_match(data->map->dim, isl_dim_out,
 798                                  map2->dim, isl_dim_out))
 799                 return 0;
 800
 801         map2 = isl_map_lex_le_map(isl_map_copy(data->map), isl_map_copy(map2));
 802
 803         data->res = isl_union_map_add_map(data->res, map2);
 804
 805         return 0;
 806 }
 807
 808 __isl_give isl_union_map *isl_union_map_lex_le_union_map(
 809         __isl_take isl_union_map *umap1, __isl_take isl_union_map *umap2)
 810 {
 811         return bin_op(umap1, umap2, &map_lex_le_entry);
 812 }
 813
 814 static int product_entry(void **entry, void *user)
 815 {
 816         struct isl_union_map_bin_data *data = user;
 817         isl_map *map2 = *entry;
 818
 819         map2 = isl_map_product(isl_map_copy(data->map), isl_map_copy(map2));
 820
 821         data->res = isl_union_map_add_map(data->res, map2);
 822
 823         return 0;
 824 }
 825
 826 __isl_give isl_union_map *isl_union_map_product(__isl_take isl_union_map *umap1,
 827         __isl_take isl_union_map *umap2)
 828 {
 829         return bin_op(umap1, umap2, &product_entry);
 830 }
 831
 832 __isl_give isl_union_set *isl_union_set_product(__isl_take isl_union_set *uset1,
 833         __isl_take isl_union_set *uset2)
 834 {
 835         return isl_union_map_product(uset1, uset2);
 836 }
 837
 838 __isl_give isl_union_map *isl_union_map_from_range(
 839         __isl_take isl_union_set *uset)
 840 {
 841         return uset;
 842 }
 843
 844 __isl_give isl_union_map *isl_union_map_from_domain(
 845         __isl_take isl_union_set *uset)
 846 {
 847         return isl_union_map_reverse(isl_union_map_from_range(uset));
 848 }
 849
 850 __isl_give isl_union_map *isl_union_map_from_domain_and_range(
 851         __isl_take isl_union_set *domain, __isl_take isl_union_set *range)
 852 {
 853         return isl_union_map_apply_range(isl_union_map_from_domain(domain),
 854                                          isl_union_map_from_range(range));
 855 }
 856
 857 static __isl_give isl_union_map *un_op(__isl_take isl_union_map *umap,
 858         int (*fn)(void **, void *), int cow)
 859 {
 860         if (cow)
 861                 umap = isl_union_map_cow(umap);
 862         if (!umap)
 863                 return NULL;
 864
 865         if (isl_hash_table_foreach(umap->dim->ctx, &umap->table, fn, NULL) < 0)
 866                 goto error;
 867
 868         return umap;
 869 error:
 870         isl_union_map_free(umap);
 871         return NULL;
 872 }
 873
 874 static int affine_entry(void **entry, void *user)
 875 {
 876         isl_map **map = (isl_map **)entry;
 877
 878         *map = isl_map_from_basic_map(isl_map_affine_hull(*map));
 879
 880         return *map ? 0 : -1;
 881 }
 882
 883 __isl_give isl_union_map *isl_union_map_affine_hull(
 884         __isl_take isl_union_map *umap)
 885 {
 886         return un_op(umap, &affine_entry, 1);
 887 }
 888
 889 __isl_give isl_union_set *isl_union_set_affine_hull(
 890         __isl_take isl_union_set *uset)
 891 {
 892         return isl_union_map_affine_hull(uset);
 893 }
 894
 895 static int coalesce_entry(void **entry, void *user)
 896 {
 897         isl_map **map = (isl_map **)entry;
 898
 899         *map = isl_map_coalesce(*map);
 900
 901         return *map ? 0 : -1;
 902 }
 903
 904 __isl_give isl_union_map *isl_union_map_coalesce(
 905         __isl_take isl_union_map *umap)
 906 {
 907         return un_op(umap, &coalesce_entry, 0);
 908 }
 909
 910 __isl_give isl_union_set *isl_union_set_coalesce(
 911         __isl_take isl_union_set *uset)
 912 {
 913         return isl_union_map_coalesce(uset);
 914 }
 915
 916 static int compute_divs_entry(void **entry, void *user)
 917 {
 918         isl_map **map = (isl_map **)entry;
 919
 920         *map = isl_map_compute_divs(*map);
 921
 922         return *map ? 0 : -1;
 923 }
 924
 925 __isl_give isl_union_map *isl_union_map_compute_divs(
 926         __isl_take isl_union_map *umap)
 927 {
 928         return un_op(umap, &compute_divs_entry, 0);
 929 }
 930
 931 __isl_give isl_union_set *isl_union_set_compute_divs(
 932         __isl_take isl_union_set *uset)
 933 {
 934         return isl_union_map_compute_divs(uset);
 935 }
 936
 937 static int lexmin_entry(void **entry, void *user)
 938 {
 939         isl_map **map = (isl_map **)entry;
 940
 941         *map = isl_map_lexmin(*map);
 942
 943         return *map ? 0 : -1;
 944 }
 945
 946 __isl_give isl_union_map *isl_union_map_lexmin(
 947         __isl_take isl_union_map *umap)
 948 {
 949         return un_op(umap, &lexmin_entry, 1);
 950 }
 951
 952 __isl_give isl_union_set *isl_union_set_lexmin(
 953         __isl_take isl_union_set *uset)
 954 {
 955         return isl_union_map_lexmin(uset);
 956 }
 957
 958 static int lexmax_entry(void **entry, void *user)
 959 {
 960         isl_map **map = (isl_map **)entry;
 961
 962         *map = isl_map_lexmax(*map);
 963
 964         return *map ? 0 : -1;
 965 }
 966
 967 __isl_give isl_union_map *isl_union_map_lexmax(
 968         __isl_take isl_union_map *umap)
 969 {
 970         return un_op(umap, &lexmax_entry, 1);
 971 }
 972
 973 __isl_give isl_union_set *isl_union_set_lexmax(
 974         __isl_take isl_union_set *uset)
 975 {
 976         return isl_union_map_lexmax(uset);
 977 }
 978
 979 static __isl_give isl_union_set *cond_un_op(__isl_take isl_union_map *umap,
 980         int (*fn)(void **, void *))
 981 {
 982         isl_union_set *res;
 983
 984         if (!umap)
 985                 return NULL;
 986
 987         res = isl_union_map_alloc(isl_dim_copy(umap->dim), umap->table.n);
 988         if (isl_hash_table_foreach(umap->dim->ctx, &umap->table, fn, &res) < 0)
 989                 goto error;
 990
 991         isl_union_map_free(umap);
 992         return res;
 993 error:
 994         isl_union_map_free(umap);
 995         isl_union_set_free(res);
 996         return NULL;
 997 }
 998
 999 static int reverse_entry(void **entry, void *user)
1000 {
1001         isl_map *map = *entry;
1002         isl_union_map **res = user;
1003
1004         *res = isl_union_map_add_map(*res, isl_map_reverse(isl_map_copy(map)));
1005
1006         return 0;
1007 }
1008
1009 __isl_give isl_union_map *isl_union_map_reverse(__isl_take isl_union_map *umap)
1010 {
1011         return cond_un_op(umap, &reverse_entry);
1012 }
1013
1014 static int domain_entry(void **entry, void *user)
1015 {
1016         isl_map *map = *entry;
1017         isl_union_set **res = user;
1018
1019         *res = isl_union_set_add_set(*res, isl_map_domain(isl_map_copy(map)));
1020
1021         return 0;
1022 }
1023
1024 __isl_give isl_union_set *isl_union_map_domain(__isl_take isl_union_map *umap)
1025 {
1026         return cond_un_op(umap, &domain_entry);
1027 }
1028
1029 static int range_entry(void **entry, void *user)
1030 {
1031         isl_map *map = *entry;
1032         isl_union_set **res = user;
1033
1034         *res = isl_union_set_add_set(*res, isl_map_range(isl_map_copy(map)));
1035
1036         return 0;
1037 }
1038
1039 __isl_give isl_union_set *isl_union_map_range(__isl_take isl_union_map *umap)
1040 {
1041         return cond_un_op(umap, &range_entry);
1042 }
1043
1044 static int domain_map_entry(void **entry, void *user)
1045 {
1046         isl_map *map = *entry;
1047         isl_union_set **res = user;
1048
1049         *res = isl_union_map_add_map(*res,
1050                                         isl_map_domain_map(isl_map_copy(map)));
1051
1052         return 0;
1053 }
1054
1055 __isl_give isl_union_map *isl_union_map_domain_map(
1056         __isl_take isl_union_map *umap)
1057 {
1058         return cond_un_op(umap, &domain_map_entry);
1059 }
1060
1061 static int range_map_entry(void **entry, void *user)
1062 {
1063         isl_map *map = *entry;
1064         isl_union_set **res = user;
1065
1066         *res = isl_union_map_add_map(*res,
1067                                         isl_map_range_map(isl_map_copy(map)));
1068
1069         return 0;
1070 }
1071
1072 __isl_give isl_union_map *isl_union_map_range_map(
1073         __isl_take isl_union_map *umap)
1074 {
1075         return cond_un_op(umap, &range_map_entry);
1076 }
1077
1078 static int deltas_entry(void **entry, void *user)
1079 {
1080         isl_map *map = *entry;
1081         isl_union_set **res = user;
1082
1083         if (!isl_dim_tuple_match(map->dim, isl_dim_in, map->dim, isl_dim_out))
1084                 return 0;
1085
1086         *res = isl_union_set_add_set(*res, isl_map_deltas(isl_map_copy(map)));
1087
1088         return 0;
1089 }
1090
1091 __isl_give isl_union_set *isl_union_map_deltas(__isl_take isl_union_map *umap)
1092 {
1093         return cond_un_op(umap, &deltas_entry);
1094 }
1095
1096 static int unwrap_entry(void **entry, void *user)
1097 {
1098         isl_set *set = *entry;
1099         isl_union_set **res = user;
1100
1101         if (!isl_set_is_wrapping(set))
1102                 return 0;
1103
1104         *res = isl_union_map_add_map(*res, isl_set_unwrap(isl_set_copy(set)));
1105
1106         return 0;
1107 }
1108
1109 __isl_give isl_union_map *isl_union_set_unwrap(__isl_take isl_union_set *uset)
1110 {
1111         return cond_un_op(uset, &unwrap_entry);
1112 }
1113
1114 static int wrap_entry(void **entry, void *user)
1115 {
1116         isl_map *map = *entry;
1117         isl_union_set **res = user;
1118
1119         *res = isl_union_set_add_set(*res, isl_map_wrap(isl_map_copy(map)));
1120
1121         return 0;
1122 }
1123
1124 __isl_give isl_union_set *isl_union_map_wrap(__isl_take isl_union_map *umap)
1125 {
1126         return cond_un_op(umap, &wrap_entry);
1127 }
1128
1129 struct isl_union_map_is_subset_data {
1130         isl_union_map *umap2;
1131         int is_subset;
1132 };
1133
1134 static int is_subset_entry(void **entry, void *user)
1135 {
1136         struct isl_union_map_is_subset_data *data = user;
1137         uint32_t hash;
1138         struct isl_hash_table_entry *entry2;
1139         isl_map *map = *entry;
1140
1141         hash = isl_dim_get_hash(map->dim);
1142         entry2 = isl_hash_table_find(data->umap2->dim->ctx, &data->umap2->table,
1143                                      hash, &has_dim, map->dim, 0);
1144         if (!entry2) {
1145                 data->is_subset = 0;
1146                 return -1;
1147         }
1148
1149         data->is_subset = isl_map_is_subset(map, entry2->data);
1150         if (data->is_subset < 0 || !data->is_subset)
1151                 return -1;
1152
1153         return 0;
1154 }
1155
1156 int isl_union_map_is_subset(__isl_keep isl_union_map *umap1,
1157         __isl_keep isl_union_map *umap2)
1158 {
1159         struct isl_union_map_is_subset_data data = { NULL, 1 };
1160
1161         umap1 = isl_union_map_copy(umap1);
1162         umap2 = isl_union_map_copy(umap2);
1163         umap1 = isl_union_map_align_params(umap1, isl_union_map_get_dim(umap2));
1164         umap2 = isl_union_map_align_params(umap2, isl_union_map_get_dim(umap1));
1165
1166         if (!umap1 || !umap2)
1167                 goto error;
1168
1169         data.umap2 = umap2;
1170         if (isl_hash_table_foreach(umap1->dim->ctx, &umap1->table,
1171                                    &is_subset_entry, &data) < 0 &&
1172             data.is_subset)
1173                 goto error;
1174
1175         isl_union_map_free(umap1);
1176         isl_union_map_free(umap2);
1177
1178         return data.is_subset;
1179 error:
1180         isl_union_map_free(umap1);
1181         isl_union_map_free(umap2);
1182         return -1;
1183 }
1184
1185 int isl_union_map_is_equal(__isl_keep isl_union_map *umap1,
1186         __isl_keep isl_union_map *umap2)
1187 {
1188         int is_subset;
1189
1190         if (!umap1 || !umap2)
1191                 return -1;
1192         is_subset = isl_union_map_is_subset(umap1, umap2);
1193         if (is_subset != 1)
1194                 return is_subset;
1195         is_subset = isl_union_map_is_subset(umap2, umap1);
1196         return is_subset;
1197 }
1198
1199 int isl_union_map_is_strict_subset(__isl_keep isl_union_map *umap1,
1200         __isl_keep isl_union_map *umap2)
1201 {
1202         int is_subset;
1203
1204         if (!umap1 || !umap2)
1205                 return -1;
1206         is_subset = isl_union_map_is_subset(umap1, umap2);
1207         if (is_subset != 1)
1208                 return is_subset;
1209         is_subset = isl_union_map_is_subset(umap2, umap1);
1210         if (is_subset == -1)
1211                 return is_subset;
1212         return !is_subset;
1213 }
1214
1215 static int sample_entry(void **entry, void *user)
1216 {
1217         isl_basic_map **sample = (isl_basic_map **)user;
1218         isl_map *map = *entry;
1219
1220         *sample = isl_map_sample(isl_map_copy(map));
1221         if (!*sample)
1222                 return -1;
1223         if (!isl_basic_map_fast_is_empty(*sample))
1224                 return -1;
1225         return 0;
1226 }
1227
1228 __isl_give isl_basic_map *isl_union_map_sample(__isl_take isl_union_map *umap)
1229 {
1230         isl_basic_map *sample = NULL;
1231
1232         if (!umap)
1233                 return NULL;
1234
1235         if (isl_hash_table_foreach(umap->dim->ctx, &umap->table,
1236                                    &sample_entry, &sample) < 0 &&
1237             !sample)
1238                 goto error;
1239
1240         isl_union_map_free(umap);
1241
1242         return sample;
1243 error:
1244         isl_union_map_free(umap);
1245         return NULL;
1246 }
1247
1248 __isl_give isl_basic_set *isl_union_set_sample(__isl_take isl_union_set *uset)
1249 {
1250         return (isl_basic_set *)isl_union_map_sample(uset);
1251 }
1252
1253 static int empty_entry(void **entry, void *user)
1254 {
1255         int *empty = user;
1256         isl_map *map = *entry;
1257
1258         if (isl_map_is_empty(map))
1259                 return 0;
1260
1261         *empty = 0;
1262
1263         return -1;
1264 }
1265
1266 __isl_give int isl_union_map_is_empty(__isl_keep isl_union_map *umap)
1267 {
1268         int empty = 1;
1269
1270         if (!umap)
1271                 return -1;
1272
1273         if (isl_hash_table_foreach(umap->dim->ctx, &umap->table,
1274                                    &empty_entry, &empty) < 0 && empty)
1275                 return -1;
1276
1277         return empty;
1278 }
1279
1280 int isl_union_set_is_empty(__isl_keep isl_union_set *uset)
1281 {
1282         return isl_union_map_is_empty(uset);
1283 }