2 * Copyright 2008-2009 Katholieke Universiteit Leuven
3 * Copyright 2010 INRIA Saclay
5 * Use of this software is governed by the GNU LGPLv2.1 license
7 * Written by Sven Verdoolaege, K.U.Leuven, Departement
8 * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
9 * and INRIA Saclay - Ile-de-France, Parc Club Orsay Universite,
10 * ZAC des vignes, 4 rue Jacques Monod, 91893 Orsay, France
18 #include "isl_equalities.h"
24 #include "isl_map_private.h"
25 #include "isl_map_piplib.h"
26 #include "isl_sample.h"
30 /* Maps dst positions to src positions */
36 static struct isl_dim_map *isl_dim_map_alloc(struct isl_ctx *ctx, unsigned len)
39 struct isl_dim_map *dim_map;
40 dim_map = isl_alloc(ctx, struct isl_dim_map,
41 sizeof(struct isl_dim_map) + len * sizeof(int));
44 dim_map->len = 1 + len;
46 for (i = 0; i < len; ++i)
47 dim_map->pos[1 + i] = -1;
51 static unsigned n(struct isl_dim *dim, enum isl_dim_type type)
54 case isl_dim_param: return dim->nparam;
55 case isl_dim_in: return dim->n_in;
56 case isl_dim_out: return dim->n_out;
57 case isl_dim_all: return dim->nparam + dim->n_in + dim->n_out;
62 static unsigned pos(struct isl_dim *dim, enum isl_dim_type type)
65 case isl_dim_param: return 1;
66 case isl_dim_in: return 1 + dim->nparam;
67 case isl_dim_out: return 1 + dim->nparam + dim->n_in;
72 static void isl_dim_map_dim_range(struct isl_dim_map *dim_map,
73 struct isl_dim *dim, enum isl_dim_type type,
74 unsigned first, unsigned n, unsigned dst_pos)
82 src_pos = pos(dim, type);
83 for (i = 0; i < n; ++i)
84 dim_map->pos[1 + dst_pos + i] = src_pos + first + i;
87 static void isl_dim_map_dim(struct isl_dim_map *dim_map, struct isl_dim *dim,
88 enum isl_dim_type type, unsigned dst_pos)
90 isl_dim_map_dim_range(dim_map, dim, type, 0, n(dim, type), dst_pos);
93 static void isl_dim_map_div(struct isl_dim_map *dim_map,
94 struct isl_basic_map *bmap, unsigned dst_pos)
99 if (!dim_map || !bmap)
102 src_pos = 1 + isl_dim_total(bmap->dim);
103 for (i = 0; i < bmap->n_div; ++i)
104 dim_map->pos[1 + dst_pos + i] = src_pos + i;
107 static void isl_dim_map_dump(struct isl_dim_map *dim_map)
111 for (i = 0; i < dim_map->len; ++i)
112 fprintf(stderr, "%d -> %d; ", i, dim_map->pos[i]);
113 fprintf(stderr, "\n");
116 unsigned isl_basic_map_dim(const struct isl_basic_map *bmap,
117 enum isl_dim_type type)
122 case isl_dim_out: return isl_dim_size(bmap->dim, type);
123 case isl_dim_div: return bmap->n_div;
124 case isl_dim_all: return isl_basic_map_total_dim(bmap);
129 unsigned isl_map_dim(const struct isl_map *map, enum isl_dim_type type)
131 return map ? n(map->dim, type) : 0;
134 unsigned isl_set_dim(const struct isl_set *set, enum isl_dim_type type)
136 return set ? n(set->dim, type) : 0;
139 unsigned isl_basic_map_offset(struct isl_basic_map *bmap,
140 enum isl_dim_type type)
142 struct isl_dim *dim = bmap->dim;
144 case isl_dim_param: return 1;
145 case isl_dim_in: return 1 + dim->nparam;
146 case isl_dim_out: return 1 + dim->nparam + dim->n_in;
147 case isl_dim_div: return 1 + dim->nparam + dim->n_in + dim->n_out;
152 static unsigned map_offset(struct isl_map *map, enum isl_dim_type type)
154 return pos(map->dim, type);
157 unsigned isl_basic_set_dim(const struct isl_basic_set *bset,
158 enum isl_dim_type type)
160 return isl_basic_map_dim((const struct isl_basic_map*)bset, type);
163 unsigned isl_basic_set_n_dim(const struct isl_basic_set *bset)
165 return bset->dim->n_out;
168 unsigned isl_basic_set_n_param(const struct isl_basic_set *bset)
170 return bset->dim->nparam;
173 unsigned isl_basic_set_total_dim(const struct isl_basic_set *bset)
175 return isl_dim_total(bset->dim) + bset->n_div;
178 unsigned isl_set_n_dim(const struct isl_set *set)
180 return set->dim->n_out;
183 unsigned isl_set_n_param(const struct isl_set *set)
185 return set->dim->nparam;
188 unsigned isl_basic_map_n_in(const struct isl_basic_map *bmap)
190 return bmap->dim->n_in;
193 unsigned isl_basic_map_n_out(const struct isl_basic_map *bmap)
195 return bmap->dim->n_out;
198 unsigned isl_basic_map_n_param(const struct isl_basic_map *bmap)
200 return bmap->dim->nparam;
203 unsigned isl_basic_map_n_div(const struct isl_basic_map *bmap)
208 unsigned isl_basic_map_total_dim(const struct isl_basic_map *bmap)
210 return isl_dim_total(bmap->dim) + bmap->n_div;
213 unsigned isl_map_n_in(const struct isl_map *map)
215 return map->dim->n_in;
218 unsigned isl_map_n_out(const struct isl_map *map)
220 return map->dim->n_out;
223 unsigned isl_map_n_param(const struct isl_map *map)
225 return map->dim->nparam;
228 int isl_map_compatible_domain(struct isl_map *map, struct isl_set *set)
230 return map->dim->n_in == set->dim->n_out &&
231 map->dim->nparam == set->dim->nparam;
234 int isl_basic_map_compatible_domain(struct isl_basic_map *bmap,
235 struct isl_basic_set *bset)
237 return bmap->dim->n_in == bset->dim->n_out &&
238 bmap->dim->nparam == bset->dim->nparam;
241 int isl_basic_map_compatible_range(struct isl_basic_map *bmap,
242 struct isl_basic_set *bset)
244 return bmap->dim->n_out == bset->dim->n_out &&
245 bmap->dim->nparam == bset->dim->nparam;
248 struct isl_dim *isl_basic_map_get_dim(struct isl_basic_map *bmap)
252 return isl_dim_copy(bmap->dim);
255 struct isl_dim *isl_basic_set_get_dim(struct isl_basic_set *bset)
259 return isl_dim_copy(bset->dim);
262 struct isl_dim *isl_map_get_dim(struct isl_map *map)
266 return isl_dim_copy(map->dim);
269 struct isl_dim *isl_set_get_dim(struct isl_set *set)
273 return isl_dim_copy(set->dim);
276 static struct isl_basic_map *basic_map_init(struct isl_ctx *ctx,
277 struct isl_basic_map *bmap, unsigned extra,
278 unsigned n_eq, unsigned n_ineq)
281 size_t row_size = 1 + isl_dim_total(bmap->dim) + extra;
283 bmap->block = isl_blk_alloc(ctx, (n_ineq + n_eq) * row_size);
284 if (isl_blk_is_error(bmap->block)) {
289 bmap->ineq = isl_alloc_array(ctx, isl_int *, n_ineq + n_eq);
291 isl_blk_free(ctx, bmap->block);
297 bmap->block2 = isl_blk_empty();
300 bmap->block2 = isl_blk_alloc(ctx, extra * (1 + row_size));
301 if (isl_blk_is_error(bmap->block2)) {
303 isl_blk_free(ctx, bmap->block);
308 bmap->div = isl_alloc_array(ctx, isl_int *, extra);
310 isl_blk_free(ctx, bmap->block2);
312 isl_blk_free(ctx, bmap->block);
318 for (i = 0; i < n_ineq + n_eq; ++i)
319 bmap->ineq[i] = bmap->block.data + i * row_size;
321 for (i = 0; i < extra; ++i)
322 bmap->div[i] = bmap->block2.data + i * (1 + row_size);
328 bmap->c_size = n_eq + n_ineq;
329 bmap->eq = bmap->ineq + n_ineq;
339 struct isl_basic_set *isl_basic_set_alloc(struct isl_ctx *ctx,
340 unsigned nparam, unsigned dim, unsigned extra,
341 unsigned n_eq, unsigned n_ineq)
343 struct isl_basic_map *bmap;
344 bmap = isl_basic_map_alloc(ctx, nparam, 0, dim, extra, n_eq, n_ineq);
345 return (struct isl_basic_set *)bmap;
348 struct isl_basic_set *isl_basic_set_alloc_dim(struct isl_dim *dim,
349 unsigned extra, unsigned n_eq, unsigned n_ineq)
351 struct isl_basic_map *bmap;
354 isl_assert(dim->ctx, dim->n_in == 0, return NULL);
355 bmap = isl_basic_map_alloc_dim(dim, extra, n_eq, n_ineq);
356 return (struct isl_basic_set *)bmap;
359 struct isl_basic_map *isl_basic_map_alloc_dim(struct isl_dim *dim,
360 unsigned extra, unsigned n_eq, unsigned n_ineq)
362 struct isl_basic_map *bmap;
366 bmap = isl_alloc_type(dim->ctx, struct isl_basic_map);
371 return basic_map_init(dim->ctx, bmap, extra, n_eq, n_ineq);
377 struct isl_basic_map *isl_basic_map_alloc(struct isl_ctx *ctx,
378 unsigned nparam, unsigned in, unsigned out, unsigned extra,
379 unsigned n_eq, unsigned n_ineq)
381 struct isl_basic_map *bmap;
384 dim = isl_dim_alloc(ctx, nparam, in, out);
388 bmap = isl_basic_map_alloc_dim(dim, extra, n_eq, n_ineq);
392 static void dup_constraints(
393 struct isl_basic_map *dst, struct isl_basic_map *src)
396 unsigned total = isl_basic_map_total_dim(src);
398 for (i = 0; i < src->n_eq; ++i) {
399 int j = isl_basic_map_alloc_equality(dst);
400 isl_seq_cpy(dst->eq[j], src->eq[i], 1+total);
403 for (i = 0; i < src->n_ineq; ++i) {
404 int j = isl_basic_map_alloc_inequality(dst);
405 isl_seq_cpy(dst->ineq[j], src->ineq[i], 1+total);
408 for (i = 0; i < src->n_div; ++i) {
409 int j = isl_basic_map_alloc_div(dst);
410 isl_seq_cpy(dst->div[j], src->div[i], 1+1+total);
412 ISL_F_SET(dst, ISL_BASIC_SET_FINAL);
415 struct isl_basic_map *isl_basic_map_dup(struct isl_basic_map *bmap)
417 struct isl_basic_map *dup;
421 dup = isl_basic_map_alloc_dim(isl_dim_copy(bmap->dim),
422 bmap->n_div, bmap->n_eq, bmap->n_ineq);
425 dup_constraints(dup, bmap);
426 dup->flags = bmap->flags;
427 dup->sample = isl_vec_copy(bmap->sample);
431 struct isl_basic_set *isl_basic_set_dup(struct isl_basic_set *bset)
433 struct isl_basic_map *dup;
435 dup = isl_basic_map_dup((struct isl_basic_map *)bset);
436 return (struct isl_basic_set *)dup;
439 struct isl_basic_set *isl_basic_set_copy(struct isl_basic_set *bset)
444 if (ISL_F_ISSET(bset, ISL_BASIC_SET_FINAL)) {
448 return isl_basic_set_dup(bset);
451 struct isl_set *isl_set_copy(struct isl_set *set)
460 struct isl_basic_map *isl_basic_map_copy(struct isl_basic_map *bmap)
465 if (ISL_F_ISSET(bmap, ISL_BASIC_SET_FINAL)) {
469 bmap = isl_basic_map_dup(bmap);
471 ISL_F_SET(bmap, ISL_BASIC_SET_FINAL);
475 struct isl_map *isl_map_copy(struct isl_map *map)
484 void isl_basic_map_free(struct isl_basic_map *bmap)
492 isl_ctx_deref(bmap->ctx);
494 isl_blk_free(bmap->ctx, bmap->block2);
496 isl_blk_free(bmap->ctx, bmap->block);
497 isl_vec_free(bmap->sample);
498 isl_dim_free(bmap->dim);
502 void isl_basic_set_free(struct isl_basic_set *bset)
504 isl_basic_map_free((struct isl_basic_map *)bset);
507 static int room_for_con(struct isl_basic_map *bmap, unsigned n)
509 return bmap->n_eq + bmap->n_ineq + n <= bmap->c_size;
512 int isl_basic_map_alloc_equality(struct isl_basic_map *bmap)
518 isl_assert(ctx, room_for_con(bmap, 1), return -1);
519 isl_assert(ctx, (bmap->eq - bmap->ineq) + bmap->n_eq <= bmap->c_size,
521 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
522 ISL_F_CLR(bmap, ISL_BASIC_MAP_NO_REDUNDANT);
523 ISL_F_CLR(bmap, ISL_BASIC_MAP_NO_IMPLICIT);
524 ISL_F_CLR(bmap, ISL_BASIC_MAP_ALL_EQUALITIES);
525 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED_DIVS);
526 if ((bmap->eq - bmap->ineq) + bmap->n_eq == bmap->c_size) {
528 int j = isl_basic_map_alloc_inequality(bmap);
532 bmap->ineq[j] = bmap->ineq[bmap->n_ineq - 1];
533 bmap->ineq[bmap->n_ineq - 1] = bmap->eq[-1];
540 isl_seq_clr(bmap->eq[bmap->n_eq] + 1 + isl_basic_map_total_dim(bmap),
541 bmap->extra - bmap->n_div);
545 int isl_basic_set_alloc_equality(struct isl_basic_set *bset)
547 return isl_basic_map_alloc_equality((struct isl_basic_map *)bset);
550 int isl_basic_map_free_equality(struct isl_basic_map *bmap, unsigned n)
554 isl_assert(bmap->ctx, n <= bmap->n_eq, return -1);
559 int isl_basic_set_free_equality(struct isl_basic_set *bset, unsigned n)
561 return isl_basic_map_free_equality((struct isl_basic_map *)bset, n);
564 int isl_basic_map_drop_equality(struct isl_basic_map *bmap, unsigned pos)
569 isl_assert(bmap->ctx, pos < bmap->n_eq, return -1);
571 if (pos != bmap->n_eq - 1) {
573 bmap->eq[pos] = bmap->eq[bmap->n_eq - 1];
574 bmap->eq[bmap->n_eq - 1] = t;
580 int isl_basic_set_drop_equality(struct isl_basic_set *bset, unsigned pos)
582 return isl_basic_map_drop_equality((struct isl_basic_map *)bset, pos);
585 void isl_basic_map_inequality_to_equality(
586 struct isl_basic_map *bmap, unsigned pos)
591 bmap->ineq[pos] = bmap->ineq[bmap->n_ineq - 1];
592 bmap->ineq[bmap->n_ineq - 1] = bmap->eq[-1];
597 ISL_F_CLR(bmap, ISL_BASIC_MAP_NO_REDUNDANT);
598 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
599 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED_DIVS);
600 ISL_F_CLR(bmap, ISL_BASIC_MAP_ALL_EQUALITIES);
603 static int room_for_ineq(struct isl_basic_map *bmap, unsigned n)
605 return bmap->n_ineq + n <= bmap->eq - bmap->ineq;
608 int isl_basic_map_alloc_inequality(struct isl_basic_map *bmap)
614 isl_assert(ctx, room_for_ineq(bmap, 1), return -1);
615 ISL_F_CLR(bmap, ISL_BASIC_MAP_NO_IMPLICIT);
616 ISL_F_CLR(bmap, ISL_BASIC_MAP_NO_REDUNDANT);
617 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
618 ISL_F_CLR(bmap, ISL_BASIC_MAP_ALL_EQUALITIES);
619 isl_seq_clr(bmap->ineq[bmap->n_ineq] +
620 1 + isl_basic_map_total_dim(bmap),
621 bmap->extra - bmap->n_div);
622 return bmap->n_ineq++;
625 int isl_basic_set_alloc_inequality(struct isl_basic_set *bset)
627 return isl_basic_map_alloc_inequality((struct isl_basic_map *)bset);
630 int isl_basic_map_free_inequality(struct isl_basic_map *bmap, unsigned n)
634 isl_assert(bmap->ctx, n <= bmap->n_ineq, return -1);
639 int isl_basic_set_free_inequality(struct isl_basic_set *bset, unsigned n)
641 return isl_basic_map_free_inequality((struct isl_basic_map *)bset, n);
644 int isl_basic_map_drop_inequality(struct isl_basic_map *bmap, unsigned pos)
649 isl_assert(bmap->ctx, pos < bmap->n_ineq, return -1);
651 if (pos != bmap->n_ineq - 1) {
653 bmap->ineq[pos] = bmap->ineq[bmap->n_ineq - 1];
654 bmap->ineq[bmap->n_ineq - 1] = t;
655 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
661 int isl_basic_set_drop_inequality(struct isl_basic_set *bset, unsigned pos)
663 return isl_basic_map_drop_inequality((struct isl_basic_map *)bset, pos);
666 __isl_give isl_basic_map *isl_basic_map_add_eq(__isl_take isl_basic_map *bmap,
671 bmap = isl_basic_map_extend_constraints(bmap, 1, 0);
674 k = isl_basic_map_alloc_equality(bmap);
677 isl_seq_cpy(bmap->eq[k], eq, 1 + isl_basic_map_total_dim(bmap));
680 isl_basic_map_free(bmap);
684 __isl_give isl_basic_set *isl_basic_set_add_eq(__isl_take isl_basic_set *bset,
687 return (isl_basic_set *)
688 isl_basic_map_add_eq((isl_basic_map *)bset, eq);
691 __isl_give isl_basic_map *isl_basic_map_add_ineq(__isl_take isl_basic_map *bmap,
696 bmap = isl_basic_map_extend_constraints(bmap, 0, 1);
699 k = isl_basic_map_alloc_inequality(bmap);
702 isl_seq_cpy(bmap->ineq[k], ineq, 1 + isl_basic_map_total_dim(bmap));
705 isl_basic_map_free(bmap);
709 __isl_give isl_basic_set *isl_basic_set_add_ineq(__isl_take isl_basic_set *bset,
712 return (isl_basic_set *)
713 isl_basic_map_add_ineq((isl_basic_map *)bset, ineq);
716 int isl_basic_map_alloc_div(struct isl_basic_map *bmap)
720 isl_assert(bmap->ctx, bmap->n_div < bmap->extra, return -1);
721 isl_seq_clr(bmap->div[bmap->n_div] +
722 1 + 1 + isl_basic_map_total_dim(bmap),
723 bmap->extra - bmap->n_div);
724 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED_DIVS);
725 return bmap->n_div++;
728 int isl_basic_set_alloc_div(struct isl_basic_set *bset)
730 return isl_basic_map_alloc_div((struct isl_basic_map *)bset);
733 int isl_basic_map_free_div(struct isl_basic_map *bmap, unsigned n)
737 isl_assert(bmap->ctx, n <= bmap->n_div, return -1);
742 int isl_basic_set_free_div(struct isl_basic_set *bset, unsigned n)
744 return isl_basic_map_free_div((struct isl_basic_map *)bset, n);
747 /* Copy constraint from src to dst, putting the vars of src at offset
748 * dim_off in dst and the divs of src at offset div_off in dst.
749 * If both sets are actually map, then dim_off applies to the input
752 static void copy_constraint(struct isl_basic_map *dst_map, isl_int *dst,
753 struct isl_basic_map *src_map, isl_int *src,
754 unsigned in_off, unsigned out_off, unsigned div_off)
756 unsigned src_nparam = isl_basic_map_n_param(src_map);
757 unsigned dst_nparam = isl_basic_map_n_param(dst_map);
758 unsigned src_in = isl_basic_map_n_in(src_map);
759 unsigned dst_in = isl_basic_map_n_in(dst_map);
760 unsigned src_out = isl_basic_map_n_out(src_map);
761 unsigned dst_out = isl_basic_map_n_out(dst_map);
762 isl_int_set(dst[0], src[0]);
763 isl_seq_cpy(dst+1, src+1, isl_min(dst_nparam, src_nparam));
764 if (dst_nparam > src_nparam)
765 isl_seq_clr(dst+1+src_nparam,
766 dst_nparam - src_nparam);
767 isl_seq_clr(dst+1+dst_nparam, in_off);
768 isl_seq_cpy(dst+1+dst_nparam+in_off,
770 isl_min(dst_in-in_off, src_in));
771 if (dst_in-in_off > src_in)
772 isl_seq_clr(dst+1+dst_nparam+in_off+src_in,
773 dst_in - in_off - src_in);
774 isl_seq_clr(dst+1+dst_nparam+dst_in, out_off);
775 isl_seq_cpy(dst+1+dst_nparam+dst_in+out_off,
776 src+1+src_nparam+src_in,
777 isl_min(dst_out-out_off, src_out));
778 if (dst_out-out_off > src_out)
779 isl_seq_clr(dst+1+dst_nparam+dst_in+out_off+src_out,
780 dst_out - out_off - src_out);
781 isl_seq_clr(dst+1+dst_nparam+dst_in+dst_out, div_off);
782 isl_seq_cpy(dst+1+dst_nparam+dst_in+dst_out+div_off,
783 src+1+src_nparam+src_in+src_out,
784 isl_min(dst_map->extra-div_off, src_map->n_div));
785 if (dst_map->n_div-div_off > src_map->n_div)
786 isl_seq_clr(dst+1+dst_nparam+dst_in+dst_out+
787 div_off+src_map->n_div,
788 dst_map->n_div - div_off - src_map->n_div);
791 static void copy_div(struct isl_basic_map *dst_map, isl_int *dst,
792 struct isl_basic_map *src_map, isl_int *src,
793 unsigned in_off, unsigned out_off, unsigned div_off)
795 isl_int_set(dst[0], src[0]);
796 copy_constraint(dst_map, dst+1, src_map, src+1, in_off, out_off, div_off);
799 static struct isl_basic_map *add_constraints(struct isl_basic_map *bmap1,
800 struct isl_basic_map *bmap2, unsigned i_pos, unsigned o_pos)
805 if (!bmap1 || !bmap2)
808 div_off = bmap1->n_div;
810 for (i = 0; i < bmap2->n_eq; ++i) {
811 int i1 = isl_basic_map_alloc_equality(bmap1);
814 copy_constraint(bmap1, bmap1->eq[i1], bmap2, bmap2->eq[i],
815 i_pos, o_pos, div_off);
818 for (i = 0; i < bmap2->n_ineq; ++i) {
819 int i1 = isl_basic_map_alloc_inequality(bmap1);
822 copy_constraint(bmap1, bmap1->ineq[i1], bmap2, bmap2->ineq[i],
823 i_pos, o_pos, div_off);
826 for (i = 0; i < bmap2->n_div; ++i) {
827 int i1 = isl_basic_map_alloc_div(bmap1);
830 copy_div(bmap1, bmap1->div[i1], bmap2, bmap2->div[i],
831 i_pos, o_pos, div_off);
834 isl_basic_map_free(bmap2);
839 isl_basic_map_free(bmap1);
840 isl_basic_map_free(bmap2);
844 static void copy_constraint_dim_map(isl_int *dst, isl_int *src,
845 struct isl_dim_map *dim_map)
849 for (i = 0; i < dim_map->len; ++i) {
850 if (dim_map->pos[i] < 0)
851 isl_int_set_si(dst[i], 0);
853 isl_int_set(dst[i], src[dim_map->pos[i]]);
857 static void copy_div_dim_map(isl_int *dst, isl_int *src,
858 struct isl_dim_map *dim_map)
860 isl_int_set(dst[0], src[0]);
861 copy_constraint_dim_map(dst+1, src+1, dim_map);
864 static struct isl_basic_map *add_constraints_dim_map(struct isl_basic_map *dst,
865 struct isl_basic_map *src, struct isl_dim_map *dim_map)
869 if (!src || !dst || !dim_map)
872 for (i = 0; i < src->n_eq; ++i) {
873 int i1 = isl_basic_map_alloc_equality(dst);
876 copy_constraint_dim_map(dst->eq[i1], src->eq[i], dim_map);
879 for (i = 0; i < src->n_ineq; ++i) {
880 int i1 = isl_basic_map_alloc_inequality(dst);
883 copy_constraint_dim_map(dst->ineq[i1], src->ineq[i], dim_map);
886 for (i = 0; i < src->n_div; ++i) {
887 int i1 = isl_basic_map_alloc_div(dst);
890 copy_div_dim_map(dst->div[i1], src->div[i], dim_map);
894 isl_basic_map_free(src);
899 isl_basic_map_free(src);
900 isl_basic_map_free(dst);
904 struct isl_basic_set *isl_basic_set_add_constraints(struct isl_basic_set *bset1,
905 struct isl_basic_set *bset2, unsigned pos)
907 return (struct isl_basic_set *)
908 add_constraints((struct isl_basic_map *)bset1,
909 (struct isl_basic_map *)bset2, 0, pos);
912 struct isl_basic_map *isl_basic_map_extend_dim(struct isl_basic_map *base,
913 struct isl_dim *dim, unsigned extra,
914 unsigned n_eq, unsigned n_ineq)
916 struct isl_basic_map *ext;
926 dims_ok = isl_dim_equal(base->dim, dim) &&
927 base->extra >= base->n_div + extra;
929 if (dims_ok && room_for_con(base, n_eq + n_ineq) &&
930 room_for_ineq(base, n_ineq)) {
935 isl_assert(base->ctx, base->dim->nparam <= dim->nparam, goto error);
936 isl_assert(base->ctx, base->dim->n_in <= dim->n_in, goto error);
937 isl_assert(base->ctx, base->dim->n_out <= dim->n_out, goto error);
938 extra += base->extra;
940 n_ineq += base->n_ineq;
942 ext = isl_basic_map_alloc_dim(dim, extra, n_eq, n_ineq);
948 ext->sample = isl_vec_copy(base->sample);
950 ext = add_constraints(ext, base, 0, 0);
953 ISL_F_CLR(ext, ISL_BASIC_SET_FINAL);
960 isl_basic_map_free(base);
964 struct isl_basic_set *isl_basic_set_extend_dim(struct isl_basic_set *base,
965 struct isl_dim *dim, unsigned extra,
966 unsigned n_eq, unsigned n_ineq)
968 return (struct isl_basic_set *)
969 isl_basic_map_extend_dim((struct isl_basic_map *)base, dim,
970 extra, n_eq, n_ineq);
973 struct isl_basic_map *isl_basic_map_extend_constraints(
974 struct isl_basic_map *base, unsigned n_eq, unsigned n_ineq)
978 return isl_basic_map_extend_dim(base, isl_dim_copy(base->dim),
982 struct isl_basic_map *isl_basic_map_extend(struct isl_basic_map *base,
983 unsigned nparam, unsigned n_in, unsigned n_out, unsigned extra,
984 unsigned n_eq, unsigned n_ineq)
986 struct isl_basic_map *bmap;
991 dim = isl_dim_alloc(base->ctx, nparam, n_in, n_out);
995 bmap = isl_basic_map_extend_dim(base, dim, extra, n_eq, n_ineq);
999 struct isl_basic_set *isl_basic_set_extend(struct isl_basic_set *base,
1000 unsigned nparam, unsigned dim, unsigned extra,
1001 unsigned n_eq, unsigned n_ineq)
1003 return (struct isl_basic_set *)
1004 isl_basic_map_extend((struct isl_basic_map *)base,
1005 nparam, 0, dim, extra, n_eq, n_ineq);
1008 struct isl_basic_set *isl_basic_set_extend_constraints(
1009 struct isl_basic_set *base, unsigned n_eq, unsigned n_ineq)
1011 return (struct isl_basic_set *)
1012 isl_basic_map_extend_constraints((struct isl_basic_map *)base,
1016 struct isl_basic_set *isl_basic_set_cow(struct isl_basic_set *bset)
1018 return (struct isl_basic_set *)
1019 isl_basic_map_cow((struct isl_basic_map *)bset);
1022 struct isl_basic_map *isl_basic_map_cow(struct isl_basic_map *bmap)
1027 if (bmap->ref > 1) {
1029 bmap = isl_basic_map_dup(bmap);
1031 ISL_F_CLR(bmap, ISL_BASIC_SET_FINAL);
1035 struct isl_set *isl_set_cow(struct isl_set *set)
1043 return isl_set_dup(set);
1046 struct isl_map *isl_map_cow(struct isl_map *map)
1054 return isl_map_dup(map);
1057 static void swap_vars(struct isl_blk blk, isl_int *a,
1058 unsigned a_len, unsigned b_len)
1060 isl_seq_cpy(blk.data, a+a_len, b_len);
1061 isl_seq_cpy(blk.data+b_len, a, a_len);
1062 isl_seq_cpy(a, blk.data, b_len+a_len);
1065 struct isl_basic_set *isl_basic_set_swap_vars(
1066 struct isl_basic_set *bset, unsigned n)
1076 nparam = isl_basic_set_n_param(bset);
1077 dim = isl_basic_set_n_dim(bset);
1078 isl_assert(bset->ctx, n <= dim, goto error);
1083 bset = isl_basic_set_cow(bset);
1087 blk = isl_blk_alloc(bset->ctx, dim);
1088 if (isl_blk_is_error(blk))
1091 for (i = 0; i < bset->n_eq; ++i)
1093 bset->eq[i]+1+nparam, n, dim - n);
1095 for (i = 0; i < bset->n_ineq; ++i)
1097 bset->ineq[i]+1+nparam, n, dim - n);
1099 for (i = 0; i < bset->n_div; ++i)
1101 bset->div[i]+1+1+nparam, n, dim - n);
1103 isl_blk_free(bset->ctx, blk);
1105 ISL_F_CLR(bset, ISL_BASIC_SET_NORMALIZED);
1106 return isl_basic_set_gauss(bset, NULL);
1108 isl_basic_set_free(bset);
1112 struct isl_set *isl_set_swap_vars(struct isl_set *set, unsigned n)
1115 set = isl_set_cow(set);
1119 for (i = 0; i < set->n; ++i) {
1120 set->p[i] = isl_basic_set_swap_vars(set->p[i], n);
1126 ISL_F_CLR(set, ISL_SET_NORMALIZED);
1130 struct isl_basic_map *isl_basic_map_set_to_empty(struct isl_basic_map *bmap)
1136 total = isl_basic_map_total_dim(bmap);
1137 isl_basic_map_free_div(bmap, bmap->n_div);
1138 isl_basic_map_free_inequality(bmap, bmap->n_ineq);
1140 isl_basic_map_free_equality(bmap, bmap->n_eq-1);
1142 i = isl_basic_map_alloc_equality(bmap);
1146 isl_int_set_si(bmap->eq[i][0], 1);
1147 isl_seq_clr(bmap->eq[i]+1, total);
1148 ISL_F_SET(bmap, ISL_BASIC_MAP_EMPTY);
1149 isl_vec_free(bmap->sample);
1150 bmap->sample = NULL;
1151 return isl_basic_map_finalize(bmap);
1153 isl_basic_map_free(bmap);
1157 struct isl_basic_set *isl_basic_set_set_to_empty(struct isl_basic_set *bset)
1159 return (struct isl_basic_set *)
1160 isl_basic_map_set_to_empty((struct isl_basic_map *)bset);
1163 void isl_basic_map_swap_div(struct isl_basic_map *bmap, int a, int b)
1166 unsigned off = isl_dim_total(bmap->dim);
1167 isl_int *t = bmap->div[a];
1168 bmap->div[a] = bmap->div[b];
1171 for (i = 0; i < bmap->n_eq; ++i)
1172 isl_int_swap(bmap->eq[i][1+off+a], bmap->eq[i][1+off+b]);
1174 for (i = 0; i < bmap->n_ineq; ++i)
1175 isl_int_swap(bmap->ineq[i][1+off+a], bmap->ineq[i][1+off+b]);
1177 for (i = 0; i < bmap->n_div; ++i)
1178 isl_int_swap(bmap->div[i][1+1+off+a], bmap->div[i][1+1+off+b]);
1179 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
1182 /* Eliminate the specified n dimensions starting at first from the
1183 * constraints using Fourier-Motzkin. The dimensions themselves
1186 __isl_give isl_map *isl_map_eliminate(__isl_take isl_map *map,
1187 enum isl_dim_type type, unsigned first, unsigned n)
1196 map = isl_map_cow(map);
1199 isl_assert(map->ctx, first + n <= isl_map_dim(map, type), goto error);
1200 first += pos(map->dim, type) - 1;
1202 for (i = 0; i < map->n; ++i) {
1203 map->p[i] = isl_basic_map_eliminate_vars(map->p[i], first, n);
1213 /* Eliminate the specified n dimensions starting at first from the
1214 * constraints using Fourier-Motzkin. The dimensions themselves
1217 __isl_give isl_set *isl_set_eliminate(__isl_take isl_set *set,
1218 enum isl_dim_type type, unsigned first, unsigned n)
1220 return (isl_set *)isl_map_eliminate((isl_map *)set, type, first, n);
1223 /* Eliminate the specified n dimensions starting at first from the
1224 * constraints using Fourier-Motzkin. The dimensions themselves
1227 __isl_give isl_set *isl_set_eliminate_dims(__isl_take isl_set *set,
1228 unsigned first, unsigned n)
1230 return isl_set_eliminate(set, isl_dim_set, first, n);
1233 /* Project out n dimensions starting at first using Fourier-Motzkin */
1234 struct isl_set *isl_set_remove_dims(struct isl_set *set,
1235 unsigned first, unsigned n)
1237 set = isl_set_eliminate_dims(set, first, n);
1238 set = isl_set_drop_dims(set, first, n);
1242 struct isl_basic_set *isl_basic_set_remove_divs(struct isl_basic_set *bset)
1244 bset = isl_basic_set_eliminate_vars(bset, isl_dim_total(bset->dim),
1252 struct isl_set *isl_set_remove_divs(struct isl_set *set)
1261 set = isl_set_cow(set);
1265 for (i = 0; i < set->n; ++i) {
1266 set->p[i] = isl_basic_set_remove_divs(set->p[i]);
1276 struct isl_basic_map *isl_basic_map_remove(struct isl_basic_map *bmap,
1277 enum isl_dim_type type, unsigned first, unsigned n)
1281 isl_assert(bmap->ctx, first + n <= isl_basic_map_dim(bmap, type),
1285 bmap = isl_basic_map_eliminate_vars(bmap,
1286 isl_basic_map_offset(bmap, type) - 1 + first, n);
1289 if (ISL_F_ISSET(bmap, ISL_BASIC_MAP_EMPTY) && type == isl_dim_div)
1291 bmap = isl_basic_map_drop(bmap, type, first, n);
1294 isl_basic_map_free(bmap);
1298 __isl_give isl_basic_set *isl_basic_set_remove(__isl_take isl_basic_set *bset,
1299 enum isl_dim_type type, unsigned first, unsigned n)
1301 return (isl_basic_set *)
1302 isl_basic_map_remove((isl_basic_map *)bset, type, first, n);
1305 struct isl_map *isl_map_remove(struct isl_map *map,
1306 enum isl_dim_type type, unsigned first, unsigned n)
1313 map = isl_map_cow(map);
1316 isl_assert(map->ctx, first + n <= isl_map_dim(map, type), goto error);
1318 for (i = 0; i < map->n; ++i) {
1319 map->p[i] = isl_basic_map_eliminate_vars(map->p[i],
1320 isl_basic_map_offset(map->p[i], type) - 1 + first, n);
1324 map = isl_map_drop(map, type, first, n);
1331 __isl_give isl_set *isl_set_remove(__isl_take isl_set *bset,
1332 enum isl_dim_type type, unsigned first, unsigned n)
1334 return (isl_set *)isl_map_remove((isl_map *)bset, type, first, n);
1337 /* Project out n inputs starting at first using Fourier-Motzkin */
1338 struct isl_map *isl_map_remove_inputs(struct isl_map *map,
1339 unsigned first, unsigned n)
1341 return isl_map_remove(map, isl_dim_in, first, n);
1344 /* Project out n dimensions starting at first using Fourier-Motzkin */
1345 struct isl_basic_set *isl_basic_set_remove_dims(struct isl_basic_set *bset,
1346 unsigned first, unsigned n)
1348 unsigned nparam = isl_basic_set_n_param(bset);
1349 bset = isl_basic_set_eliminate_vars(bset, nparam + first, n);
1350 bset = isl_basic_set_drop_dims(bset, first, n);
1354 static void dump_term(struct isl_basic_map *bmap,
1355 isl_int c, int pos, FILE *out)
1358 unsigned in = isl_basic_map_n_in(bmap);
1359 unsigned dim = in + isl_basic_map_n_out(bmap);
1360 unsigned nparam = isl_basic_map_n_param(bmap);
1362 isl_int_print(out, c, 0);
1364 if (!isl_int_is_one(c))
1365 isl_int_print(out, c, 0);
1366 if (pos < 1 + nparam) {
1367 name = isl_dim_get_name(bmap->dim,
1368 isl_dim_param, pos - 1);
1370 fprintf(out, "%s", name);
1372 fprintf(out, "p%d", pos - 1);
1373 } else if (pos < 1 + nparam + in)
1374 fprintf(out, "i%d", pos - 1 - nparam);
1375 else if (pos < 1 + nparam + dim)
1376 fprintf(out, "o%d", pos - 1 - nparam - in);
1378 fprintf(out, "e%d", pos - 1 - nparam - dim);
1382 static void dump_constraint_sign(struct isl_basic_map *bmap, isl_int *c,
1383 int sign, FILE *out)
1387 unsigned len = 1 + isl_basic_map_total_dim(bmap);
1391 for (i = 0, first = 1; i < len; ++i) {
1392 if (isl_int_sgn(c[i]) * sign <= 0)
1395 fprintf(out, " + ");
1397 isl_int_abs(v, c[i]);
1398 dump_term(bmap, v, i, out);
1405 static void dump_constraint(struct isl_basic_map *bmap, isl_int *c,
1406 const char *op, FILE *out, int indent)
1410 fprintf(out, "%*s", indent, "");
1412 dump_constraint_sign(bmap, c, 1, out);
1413 fprintf(out, " %s ", op);
1414 dump_constraint_sign(bmap, c, -1, out);
1418 for (i = bmap->n_div; i < bmap->extra; ++i) {
1419 if (isl_int_is_zero(c[1+isl_dim_total(bmap->dim)+i]))
1421 fprintf(out, "%*s", indent, "");
1422 fprintf(out, "ERROR: unused div coefficient not zero\n");
1427 static void dump_constraints(struct isl_basic_map *bmap,
1428 isl_int **c, unsigned n,
1429 const char *op, FILE *out, int indent)
1433 for (i = 0; i < n; ++i)
1434 dump_constraint(bmap, c[i], op, out, indent);
1437 static void dump_affine(struct isl_basic_map *bmap, isl_int *exp, FILE *out)
1441 unsigned total = isl_basic_map_total_dim(bmap);
1443 for (j = 0; j < 1 + total; ++j) {
1444 if (isl_int_is_zero(exp[j]))
1446 if (!first && isl_int_is_pos(exp[j]))
1448 dump_term(bmap, exp[j], j, out);
1453 static void dump(struct isl_basic_map *bmap, FILE *out, int indent)
1457 dump_constraints(bmap, bmap->eq, bmap->n_eq, "=", out, indent);
1458 dump_constraints(bmap, bmap->ineq, bmap->n_ineq, ">=", out, indent);
1460 for (i = 0; i < bmap->n_div; ++i) {
1461 fprintf(out, "%*s", indent, "");
1462 fprintf(out, "e%d = [(", i);
1463 dump_affine(bmap, bmap->div[i]+1, out);
1465 isl_int_print(out, bmap->div[i][0], 0);
1466 fprintf(out, "]\n");
1470 void isl_basic_set_dump(struct isl_basic_set *bset, FILE *out, int indent)
1473 fprintf(out, "null basic set\n");
1477 fprintf(out, "%*s", indent, "");
1478 fprintf(out, "ref: %d, nparam: %d, dim: %d, extra: %d, flags: %x\n",
1479 bset->ref, bset->dim->nparam, bset->dim->n_out,
1480 bset->extra, bset->flags);
1481 dump((struct isl_basic_map *)bset, out, indent);
1484 void isl_basic_map_dump(struct isl_basic_map *bmap, FILE *out, int indent)
1487 fprintf(out, "null basic map\n");
1491 fprintf(out, "%*s", indent, "");
1492 fprintf(out, "ref: %d, nparam: %d, in: %d, out: %d, extra: %d, "
1493 "flags: %x, n_name: %d\n",
1495 bmap->dim->nparam, bmap->dim->n_in, bmap->dim->n_out,
1496 bmap->extra, bmap->flags, bmap->dim->n_name);
1497 dump(bmap, out, indent);
1500 int isl_inequality_negate(struct isl_basic_map *bmap, unsigned pos)
1505 total = isl_basic_map_total_dim(bmap);
1506 isl_assert(bmap->ctx, pos < bmap->n_ineq, return -1);
1507 isl_seq_neg(bmap->ineq[pos], bmap->ineq[pos], 1 + total);
1508 isl_int_sub_ui(bmap->ineq[pos][0], bmap->ineq[pos][0], 1);
1509 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
1513 struct isl_set *isl_set_alloc_dim(struct isl_dim *dim, int n, unsigned flags)
1515 struct isl_set *set;
1519 isl_assert(dim->ctx, dim->n_in == 0, return NULL);
1520 isl_assert(dim->ctx, n >= 0, return NULL);
1521 set = isl_alloc(dim->ctx, struct isl_set,
1522 sizeof(struct isl_set) +
1523 (n - 1) * sizeof(struct isl_basic_set *));
1527 set->ctx = dim->ctx;
1528 isl_ctx_ref(set->ctx);
1540 struct isl_set *isl_set_alloc(struct isl_ctx *ctx,
1541 unsigned nparam, unsigned dim, int n, unsigned flags)
1543 struct isl_set *set;
1544 struct isl_dim *dims;
1546 dims = isl_dim_alloc(ctx, nparam, 0, dim);
1550 set = isl_set_alloc_dim(dims, n, flags);
1554 /* Make sure "map" has room for at least "n" more basic maps.
1556 struct isl_map *isl_map_grow(struct isl_map *map, int n)
1559 struct isl_map *grown = NULL;
1563 isl_assert(map->ctx, n >= 0, goto error);
1564 if (map->n + n <= map->size)
1566 grown = isl_map_alloc_dim(isl_map_get_dim(map), map->n + n, map->flags);
1569 for (i = 0; i < map->n; ++i) {
1570 grown->p[i] = isl_basic_map_copy(map->p[i]);
1578 isl_map_free(grown);
1583 /* Make sure "set" has room for at least "n" more basic sets.
1585 struct isl_set *isl_set_grow(struct isl_set *set, int n)
1587 return (struct isl_set *)isl_map_grow((struct isl_map *)set, n);
1590 struct isl_set *isl_set_dup(struct isl_set *set)
1593 struct isl_set *dup;
1598 dup = isl_set_alloc_dim(isl_dim_copy(set->dim), set->n, set->flags);
1601 for (i = 0; i < set->n; ++i)
1602 dup = isl_set_add_basic_set(dup, isl_basic_set_copy(set->p[i]));
1606 struct isl_set *isl_set_from_basic_set(struct isl_basic_set *bset)
1608 struct isl_set *set;
1613 set = isl_set_alloc_dim(isl_dim_copy(bset->dim), 1, ISL_MAP_DISJOINT);
1615 isl_basic_set_free(bset);
1618 return isl_set_add_basic_set(set, bset);
1621 struct isl_map *isl_map_from_basic_map(struct isl_basic_map *bmap)
1623 struct isl_map *map;
1628 map = isl_map_alloc_dim(isl_dim_copy(bmap->dim), 1, ISL_MAP_DISJOINT);
1630 isl_basic_map_free(bmap);
1633 return isl_map_add_basic_map(map, bmap);
1636 __isl_give isl_set *isl_set_add_basic_set(__isl_take isl_set *set,
1637 __isl_take isl_basic_set *bset)
1639 return (struct isl_set *)isl_map_add_basic_map((struct isl_map *)set,
1640 (struct isl_basic_map *)bset);
1643 void isl_set_free(struct isl_set *set)
1653 isl_ctx_deref(set->ctx);
1654 for (i = 0; i < set->n; ++i)
1655 isl_basic_set_free(set->p[i]);
1656 isl_dim_free(set->dim);
1660 void isl_set_dump(struct isl_set *set, FILE *out, int indent)
1665 fprintf(out, "null set\n");
1669 fprintf(out, "%*s", indent, "");
1670 fprintf(out, "ref: %d, n: %d, nparam: %d, dim: %d, flags: %x\n",
1671 set->ref, set->n, set->dim->nparam, set->dim->n_out,
1673 for (i = 0; i < set->n; ++i) {
1674 fprintf(out, "%*s", indent, "");
1675 fprintf(out, "basic set %d:\n", i);
1676 isl_basic_set_dump(set->p[i], out, indent+4);
1680 void isl_map_dump(struct isl_map *map, FILE *out, int indent)
1685 fprintf(out, "null map\n");
1689 fprintf(out, "%*s", indent, "");
1690 fprintf(out, "ref: %d, n: %d, nparam: %d, in: %d, out: %d, "
1691 "flags: %x, n_name: %d\n",
1692 map->ref, map->n, map->dim->nparam, map->dim->n_in,
1693 map->dim->n_out, map->flags, map->dim->n_name);
1694 for (i = 0; i < map->n; ++i) {
1695 fprintf(out, "%*s", indent, "");
1696 fprintf(out, "basic map %d:\n", i);
1697 isl_basic_map_dump(map->p[i], out, indent+4);
1701 struct isl_basic_map *isl_basic_map_intersect_domain(
1702 struct isl_basic_map *bmap, struct isl_basic_set *bset)
1704 struct isl_basic_map *bmap_domain;
1705 struct isl_dim *dim;
1710 isl_assert(bset->ctx, isl_dim_match(bmap->dim, isl_dim_param,
1711 bset->dim, isl_dim_param), goto error);
1713 if (isl_dim_size(bset->dim, isl_dim_set) != 0)
1714 isl_assert(bset->ctx,
1715 isl_basic_map_compatible_domain(bmap, bset), goto error);
1717 bmap = isl_basic_map_cow(bmap);
1718 bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
1719 bset->n_div, bset->n_eq, bset->n_ineq);
1722 dim = isl_dim_reverse(isl_dim_copy(bset->dim));
1723 bmap_domain = isl_basic_map_from_basic_set(bset, dim);
1724 bmap = add_constraints(bmap, bmap_domain, 0, 0);
1726 bmap = isl_basic_map_simplify(bmap);
1727 return isl_basic_map_finalize(bmap);
1729 isl_basic_map_free(bmap);
1730 isl_basic_set_free(bset);
1734 struct isl_basic_map *isl_basic_map_intersect_range(
1735 struct isl_basic_map *bmap, struct isl_basic_set *bset)
1737 struct isl_basic_map *bmap_range;
1742 isl_assert(bset->ctx, isl_dim_match(bmap->dim, isl_dim_param,
1743 bset->dim, isl_dim_param), goto error);
1745 if (isl_dim_size(bset->dim, isl_dim_set) != 0)
1746 isl_assert(bset->ctx,
1747 isl_basic_map_compatible_range(bmap, bset), goto error);
1749 bmap = isl_basic_map_cow(bmap);
1750 bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
1751 bset->n_div, bset->n_eq, bset->n_ineq);
1754 bmap_range = isl_basic_map_from_basic_set(bset, isl_dim_copy(bset->dim));
1755 bmap = add_constraints(bmap, bmap_range, 0, 0);
1757 bmap = isl_basic_map_simplify(bmap);
1758 return isl_basic_map_finalize(bmap);
1760 isl_basic_map_free(bmap);
1761 isl_basic_set_free(bset);
1765 int isl_basic_map_contains(struct isl_basic_map *bmap, struct isl_vec *vec)
1771 total = 1 + isl_basic_map_total_dim(bmap);
1772 if (total != vec->size)
1777 for (i = 0; i < bmap->n_eq; ++i) {
1778 isl_seq_inner_product(vec->el, bmap->eq[i], total, &s);
1779 if (!isl_int_is_zero(s)) {
1785 for (i = 0; i < bmap->n_ineq; ++i) {
1786 isl_seq_inner_product(vec->el, bmap->ineq[i], total, &s);
1787 if (isl_int_is_neg(s)) {
1798 int isl_basic_set_contains(struct isl_basic_set *bset, struct isl_vec *vec)
1800 return isl_basic_map_contains((struct isl_basic_map *)bset, vec);
1803 struct isl_basic_map *isl_basic_map_intersect(
1804 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
1806 struct isl_vec *sample = NULL;
1808 if (!bmap1 || !bmap2)
1811 isl_assert(bmap1->ctx, isl_dim_match(bmap1->dim, isl_dim_param,
1812 bmap2->dim, isl_dim_param), goto error);
1813 if (isl_dim_total(bmap1->dim) ==
1814 isl_dim_size(bmap1->dim, isl_dim_param) &&
1815 isl_dim_total(bmap2->dim) !=
1816 isl_dim_size(bmap2->dim, isl_dim_param))
1817 return isl_basic_map_intersect(bmap2, bmap1);
1819 if (isl_dim_total(bmap2->dim) !=
1820 isl_dim_size(bmap2->dim, isl_dim_param))
1821 isl_assert(bmap1->ctx,
1822 isl_dim_equal(bmap1->dim, bmap2->dim), goto error);
1824 if (bmap1->sample &&
1825 isl_basic_map_contains(bmap1, bmap1->sample) > 0 &&
1826 isl_basic_map_contains(bmap2, bmap1->sample) > 0)
1827 sample = isl_vec_copy(bmap1->sample);
1828 else if (bmap2->sample &&
1829 isl_basic_map_contains(bmap1, bmap2->sample) > 0 &&
1830 isl_basic_map_contains(bmap2, bmap2->sample) > 0)
1831 sample = isl_vec_copy(bmap2->sample);
1833 bmap1 = isl_basic_map_cow(bmap1);
1834 bmap1 = isl_basic_map_extend_dim(bmap1, isl_dim_copy(bmap1->dim),
1835 bmap2->n_div, bmap2->n_eq, bmap2->n_ineq);
1838 bmap1 = add_constraints(bmap1, bmap2, 0, 0);
1841 isl_vec_free(bmap1->sample);
1842 bmap1->sample = sample;
1845 bmap1 = isl_basic_map_simplify(bmap1);
1846 return isl_basic_map_finalize(bmap1);
1849 isl_vec_free(sample);
1850 isl_basic_map_free(bmap1);
1851 isl_basic_map_free(bmap2);
1855 struct isl_basic_set *isl_basic_set_intersect(
1856 struct isl_basic_set *bset1, struct isl_basic_set *bset2)
1858 return (struct isl_basic_set *)
1859 isl_basic_map_intersect(
1860 (struct isl_basic_map *)bset1,
1861 (struct isl_basic_map *)bset2);
1864 /* Special case of isl_map_intersect, where both map1 and map2
1865 * are convex, without any divs and such that either map1 or map2
1866 * contains a single constraint. This constraint is then simply
1867 * added to the other map.
1869 static __isl_give isl_map *map_intersect_add_constraint(
1870 __isl_take isl_map *map1, __isl_take isl_map *map2)
1872 struct isl_basic_map *bmap1;
1873 struct isl_basic_map *bmap2;
1875 isl_assert(map1->ctx, map1->n == 1, goto error);
1876 isl_assert(map2->ctx, map1->n == 1, goto error);
1877 isl_assert(map1->ctx, map1->p[0]->n_div == 0, goto error);
1878 isl_assert(map2->ctx, map1->p[0]->n_div == 0, goto error);
1880 if (map2->p[0]->n_eq + map2->p[0]->n_ineq != 1)
1881 return isl_map_intersect(map2, map1);
1883 isl_assert(map2->ctx,
1884 map2->p[0]->n_eq + map2->p[0]->n_ineq == 1, goto error);
1886 map1 = isl_map_cow(map1);
1889 if (isl_map_fast_is_empty(map1)) {
1893 map1->p[0] = isl_basic_map_cow(map1->p[0]);
1894 if (map2->p[0]->n_eq == 1)
1895 map1->p[0] = isl_basic_map_add_eq(map1->p[0], map2->p[0]->eq[0]);
1897 map1->p[0] = isl_basic_map_add_ineq(map1->p[0],
1898 map2->p[0]->ineq[0]);
1900 map1->p[0] = isl_basic_map_simplify(map1->p[0]);
1901 map1->p[0] = isl_basic_map_finalize(map1->p[0]);
1905 if (isl_basic_map_fast_is_empty(map1->p[0])) {
1906 isl_basic_map_free(map1->p[0]);
1919 struct isl_map *isl_map_intersect(struct isl_map *map1, struct isl_map *map2)
1922 struct isl_map *result;
1928 if (isl_map_fast_is_empty(map1)) {
1932 if (isl_map_fast_is_empty(map2)) {
1937 if (map1->n == 1 && map2->n == 1 &&
1938 map1->p[0]->n_div == 0 && map2->p[0]->n_div == 0 &&
1939 isl_dim_equal(map1->dim, map2->dim) &&
1940 (map1->p[0]->n_eq + map1->p[0]->n_ineq == 1 ||
1941 map2->p[0]->n_eq + map2->p[0]->n_ineq == 1))
1942 return map_intersect_add_constraint(map1, map2);
1943 isl_assert(map1->ctx, isl_dim_match(map1->dim, isl_dim_param,
1944 map2->dim, isl_dim_param), goto error);
1945 if (isl_dim_total(map1->dim) ==
1946 isl_dim_size(map1->dim, isl_dim_param) &&
1947 isl_dim_total(map2->dim) != isl_dim_size(map2->dim, isl_dim_param))
1948 return isl_map_intersect(map2, map1);
1950 if (isl_dim_total(map2->dim) != isl_dim_size(map2->dim, isl_dim_param))
1951 isl_assert(map1->ctx,
1952 isl_dim_equal(map1->dim, map2->dim), goto error);
1954 if (ISL_F_ISSET(map1, ISL_MAP_DISJOINT) &&
1955 ISL_F_ISSET(map2, ISL_MAP_DISJOINT))
1956 ISL_FL_SET(flags, ISL_MAP_DISJOINT);
1958 result = isl_map_alloc_dim(isl_dim_copy(map1->dim),
1959 map1->n * map2->n, flags);
1962 for (i = 0; i < map1->n; ++i)
1963 for (j = 0; j < map2->n; ++j) {
1964 struct isl_basic_map *part;
1965 part = isl_basic_map_intersect(
1966 isl_basic_map_copy(map1->p[i]),
1967 isl_basic_map_copy(map2->p[j]));
1968 if (isl_basic_map_is_empty(part))
1969 isl_basic_map_free(part);
1971 result = isl_map_add_basic_map(result, part);
1984 struct isl_set *isl_set_intersect(struct isl_set *set1, struct isl_set *set2)
1986 return (struct isl_set *)
1987 isl_map_intersect((struct isl_map *)set1,
1988 (struct isl_map *)set2);
1991 struct isl_basic_map *isl_basic_map_reverse(struct isl_basic_map *bmap)
1993 struct isl_dim *dim;
1994 struct isl_basic_set *bset;
1999 bmap = isl_basic_map_cow(bmap);
2002 dim = isl_dim_reverse(isl_dim_copy(bmap->dim));
2003 in = isl_basic_map_n_in(bmap);
2004 bset = isl_basic_set_from_basic_map(bmap);
2005 bset = isl_basic_set_swap_vars(bset, in);
2006 return isl_basic_map_from_basic_set(bset, dim);
2009 __isl_give isl_basic_map *isl_basic_map_insert(__isl_take isl_basic_map *bmap,
2010 enum isl_dim_type type, unsigned pos, unsigned n)
2012 struct isl_dim *res_dim;
2013 struct isl_basic_map *res;
2014 struct isl_dim_map *dim_map;
2015 unsigned total, off;
2016 enum isl_dim_type t;
2024 res_dim = isl_dim_insert(isl_basic_map_get_dim(bmap), type, pos, n);
2026 total = isl_basic_map_total_dim(bmap) + n;
2027 dim_map = isl_dim_map_alloc(bmap->ctx, total);
2029 for (t = isl_dim_param; t <= isl_dim_out; ++t) {
2031 isl_dim_map_dim(dim_map, bmap->dim, t, off);
2033 unsigned size = isl_basic_map_dim(bmap, t);
2034 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2036 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2037 pos, size - pos, off + pos + n);
2039 off += isl_dim_size(res_dim, t);
2041 isl_dim_map_div(dim_map, bmap, off);
2043 res = isl_basic_map_alloc_dim(res_dim,
2044 bmap->n_div, bmap->n_eq, bmap->n_ineq);
2045 res = add_constraints_dim_map(res, bmap, dim_map);
2046 res = isl_basic_map_simplify(res);
2047 return isl_basic_map_finalize(res);
2050 __isl_give isl_basic_map *isl_basic_map_add(__isl_take isl_basic_map *bmap,
2051 enum isl_dim_type type, unsigned n)
2055 return isl_basic_map_insert(bmap, type,
2056 isl_basic_map_dim(bmap, type), n);
2059 __isl_give isl_basic_set *isl_basic_set_add(__isl_take isl_basic_set *bset,
2060 enum isl_dim_type type, unsigned n)
2064 isl_assert(bset->ctx, type != isl_dim_in, goto error);
2065 return (isl_basic_set *)isl_basic_map_add((isl_basic_map *)bset, type, n);
2067 isl_basic_set_free(bset);
2071 __isl_give isl_map *isl_map_insert(__isl_take isl_map *map,
2072 enum isl_dim_type type, unsigned pos, unsigned n)
2079 map = isl_map_cow(map);
2083 map->dim = isl_dim_insert(map->dim, type, pos, n);
2087 for (i = 0; i < map->n; ++i) {
2088 map->p[i] = isl_basic_map_insert(map->p[i], type, pos, n);
2099 __isl_give isl_map *isl_map_add(__isl_take isl_map *map,
2100 enum isl_dim_type type, unsigned n)
2104 return isl_map_insert(map, type, isl_map_dim(map, type), n);
2107 __isl_give isl_set *isl_set_add(__isl_take isl_set *set,
2108 enum isl_dim_type type, unsigned n)
2112 isl_assert(set->ctx, type != isl_dim_in, goto error);
2113 return (isl_set *)isl_map_add((isl_map *)set, type, n);
2119 __isl_give isl_basic_map *isl_basic_map_move_dims(
2120 __isl_take isl_basic_map *bmap,
2121 enum isl_dim_type dst_type, unsigned dst_pos,
2122 enum isl_dim_type src_type, unsigned src_pos, unsigned n)
2125 struct isl_dim_map *dim_map;
2126 struct isl_basic_map *res;
2127 enum isl_dim_type t;
2128 unsigned total, off;
2135 isl_assert(bmap->ctx, src_pos + n <= isl_basic_map_dim(bmap, src_type),
2138 if (dst_type == src_type && dst_pos == src_pos)
2141 isl_assert(bmap->ctx, dst_type != src_type, goto error);
2143 if (pos(bmap->dim, dst_type) + dst_pos ==
2144 pos(bmap->dim, src_type) + src_pos +
2145 ((src_type < dst_type) ? n : 0)) {
2146 bmap = isl_basic_map_cow(bmap);
2150 bmap->dim = isl_dim_move(bmap->dim, dst_type, dst_pos,
2151 src_type, src_pos, n);
2155 bmap = isl_basic_map_finalize(bmap);
2160 total = isl_basic_map_total_dim(bmap);
2161 dim_map = isl_dim_map_alloc(bmap->ctx, total);
2164 for (t = isl_dim_param; t <= isl_dim_out; ++t) {
2165 unsigned size = isl_dim_size(bmap->dim, t);
2166 if (t == dst_type) {
2167 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2170 isl_dim_map_dim_range(dim_map, bmap->dim, src_type,
2173 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2174 dst_pos, size - dst_pos, off);
2175 off += size - dst_pos;
2176 } else if (t == src_type) {
2177 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2180 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2181 src_pos + n, size - src_pos - n, off);
2182 off += size - src_pos - n;
2184 isl_dim_map_dim(dim_map, bmap->dim, t, off);
2188 isl_dim_map_div(dim_map, bmap, off + n);
2190 res = isl_basic_map_alloc_dim(isl_basic_map_get_dim(bmap),
2191 bmap->n_div, bmap->n_eq, bmap->n_ineq);
2192 bmap = add_constraints_dim_map(res, bmap, dim_map);
2194 bmap->dim = isl_dim_move(bmap->dim, dst_type, dst_pos,
2195 src_type, src_pos, n);
2199 ISL_F_CLR(bmap, ISL_BASIC_MAP_NORMALIZED);
2200 bmap = isl_basic_map_gauss(bmap, NULL);
2201 bmap = isl_basic_map_finalize(bmap);
2205 isl_basic_map_free(bmap);
2209 __isl_give isl_basic_set *isl_basic_set_move_dims(__isl_take isl_basic_set *bset,
2210 enum isl_dim_type dst_type, unsigned dst_pos,
2211 enum isl_dim_type src_type, unsigned src_pos, unsigned n)
2213 return (isl_basic_set *)isl_basic_map_move_dims(
2214 (isl_basic_map *)bset, dst_type, dst_pos, src_type, src_pos, n);
2217 __isl_give isl_set *isl_set_move_dims(__isl_take isl_set *set,
2218 enum isl_dim_type dst_type, unsigned dst_pos,
2219 enum isl_dim_type src_type, unsigned src_pos, unsigned n)
2223 isl_assert(set->ctx, dst_type != isl_dim_in, goto error);
2224 return (isl_set *)isl_map_move_dims((isl_map *)set, dst_type, dst_pos,
2225 src_type, src_pos, n);
2231 __isl_give isl_map *isl_map_move_dims(__isl_take isl_map *map,
2232 enum isl_dim_type dst_type, unsigned dst_pos,
2233 enum isl_dim_type src_type, unsigned src_pos, unsigned n)
2242 isl_assert(map->ctx, src_pos + n <= isl_map_dim(map, src_type),
2245 if (dst_type == src_type && dst_pos == src_pos)
2248 isl_assert(map->ctx, dst_type != src_type, goto error);
2250 map = isl_map_cow(map);
2254 map->dim = isl_dim_move(map->dim, dst_type, dst_pos, src_type, src_pos, n);
2258 for (i = 0; i < map->n; ++i) {
2259 map->p[i] = isl_basic_map_move_dims(map->p[i],
2261 src_type, src_pos, n);
2272 /* Move the specified dimensions to the last columns right before
2273 * the divs. Don't change the dimension specification of bmap.
2274 * That's the responsibility of the caller.
2276 static __isl_give isl_basic_map *move_last(__isl_take isl_basic_map *bmap,
2277 enum isl_dim_type type, unsigned first, unsigned n)
2279 struct isl_dim_map *dim_map;
2280 struct isl_basic_map *res;
2281 enum isl_dim_type t;
2282 unsigned total, off;
2286 if (pos(bmap->dim, type) + first + n == 1 + isl_dim_total(bmap->dim))
2289 total = isl_basic_map_total_dim(bmap);
2290 dim_map = isl_dim_map_alloc(bmap->ctx, total);
2293 for (t = isl_dim_param; t <= isl_dim_out; ++t) {
2294 unsigned size = isl_dim_size(bmap->dim, t);
2296 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2299 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2300 first, n, total - bmap->n_div - n);
2301 isl_dim_map_dim_range(dim_map, bmap->dim, t,
2302 first + n, size - (first + n), off);
2303 off += size - (first + n);
2305 isl_dim_map_dim(dim_map, bmap->dim, t, off);
2309 isl_dim_map_div(dim_map, bmap, off + n);
2311 res = isl_basic_map_alloc_dim(isl_basic_map_get_dim(bmap),
2312 bmap->n_div, bmap->n_eq, bmap->n_ineq);
2313 res = add_constraints_dim_map(res, bmap, dim_map);
2317 /* Turn the n dimensions of type type, starting at first
2318 * into existentially quantified variables.
2320 __isl_give isl_basic_map *isl_basic_map_project_out(
2321 __isl_take isl_basic_map *bmap,
2322 enum isl_dim_type type, unsigned first, unsigned n)
2335 if (ISL_F_ISSET(bmap, ISL_BASIC_MAP_RATIONAL))
2336 return isl_basic_map_remove(bmap, type, first, n);
2338 isl_assert(bmap->ctx, first + n <= isl_basic_map_dim(bmap, type),
2341 bmap = move_last(bmap, type, first, n);
2342 bmap = isl_basic_map_cow(bmap);
2344 row_size = 1 + isl_dim_total(bmap->dim) + bmap->extra;
2345 old = bmap->block2.data;
2346 bmap->block2 = isl_blk_extend(bmap->ctx, bmap->block2,
2347 (bmap->extra + n) * (1 + row_size));
2348 if (!bmap->block2.data)
2350 new_div = isl_alloc_array(ctx, isl_int *, bmap->extra + n);
2353 for (i = 0; i < n; ++i) {
2354 new_div[i] = bmap->block2.data +
2355 (bmap->extra + i) * (1 + row_size);
2356 isl_seq_clr(new_div[i], 1 + row_size);
2358 for (i = 0; i < bmap->extra; ++i)
2359 new_div[n + i] = bmap->block2.data + (bmap->div[i] - old);
2361 bmap->div = new_div;
2365 bmap->dim = isl_dim_drop(bmap->dim, type, first, n);
2368 bmap = isl_basic_map_simplify(bmap);
2369 bmap = isl_basic_map_drop_redundant_divs(bmap);
2370 return isl_basic_map_finalize(bmap);
2372 isl_basic_map_free(bmap);
2376 /* Turn the n dimensions of type type, starting at first
2377 * into existentially quantified variables.
2379 struct isl_basic_set *isl_basic_set_project_out(struct isl_basic_set *bset,
2380 enum isl_dim_type type, unsigned first, unsigned n)
2382 return (isl_basic_set *)isl_basic_map_project_out(
2383 (isl_basic_map *)bset, type, first, n);
2386 /* Turn the n dimensions of type type, starting at first
2387 * into existentially quantified variables.
2389 __isl_give isl_map *isl_map_project_out(__isl_take isl_map *map,
2390 enum isl_dim_type type, unsigned first, unsigned n)
2400 isl_assert(map->ctx, first + n <= isl_map_dim(map, type), goto error);
2402 map = isl_map_cow(map);
2406 map->dim = isl_dim_drop(map->dim, type, first, n);
2410 for (i = 0; i < map->n; ++i) {
2411 map->p[i] = isl_basic_map_project_out(map->p[i], type, first, n);
2422 /* Turn the n dimensions of type type, starting at first
2423 * into existentially quantified variables.
2425 __isl_give isl_set *isl_set_project_out(__isl_take isl_set *set,
2426 enum isl_dim_type type, unsigned first, unsigned n)
2428 return (isl_set *)isl_map_project_out((isl_map *)set, type, first, n);
2431 static struct isl_basic_map *add_divs(struct isl_basic_map *bmap, unsigned n)
2435 for (i = 0; i < n; ++i) {
2436 j = isl_basic_map_alloc_div(bmap);
2439 isl_seq_clr(bmap->div[j], 1+1+isl_basic_map_total_dim(bmap));
2443 isl_basic_map_free(bmap);
2447 struct isl_basic_map *isl_basic_map_apply_range(
2448 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
2450 struct isl_dim *dim_result = NULL;
2451 struct isl_basic_map *bmap;
2452 unsigned n_in, n_out, n, nparam, total, pos;
2453 struct isl_dim_map *dim_map1, *dim_map2;
2455 if (!bmap1 || !bmap2)
2458 dim_result = isl_dim_join(isl_dim_copy(bmap1->dim),
2459 isl_dim_copy(bmap2->dim));
2461 n_in = isl_basic_map_n_in(bmap1);
2462 n_out = isl_basic_map_n_out(bmap2);
2463 n = isl_basic_map_n_out(bmap1);
2464 nparam = isl_basic_map_n_param(bmap1);
2466 total = nparam + n_in + n_out + bmap1->n_div + bmap2->n_div + n;
2467 dim_map1 = isl_dim_map_alloc(bmap1->ctx, total);
2468 dim_map2 = isl_dim_map_alloc(bmap1->ctx, total);
2469 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_param, pos = 0);
2470 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_param, pos = 0);
2471 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_in, pos += nparam);
2472 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_out, pos += n_in);
2473 isl_dim_map_div(dim_map1, bmap1, pos += n_out);
2474 isl_dim_map_div(dim_map2, bmap2, pos += bmap1->n_div);
2475 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_out, pos += bmap2->n_div);
2476 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_in, pos);
2478 bmap = isl_basic_map_alloc_dim(dim_result,
2479 bmap1->n_div + bmap2->n_div + n,
2480 bmap1->n_eq + bmap2->n_eq,
2481 bmap1->n_ineq + bmap2->n_ineq);
2482 bmap = add_constraints_dim_map(bmap, bmap1, dim_map1);
2483 bmap = add_constraints_dim_map(bmap, bmap2, dim_map2);
2484 bmap = add_divs(bmap, n);
2485 bmap = isl_basic_map_simplify(bmap);
2486 bmap = isl_basic_map_drop_redundant_divs(bmap);
2487 return isl_basic_map_finalize(bmap);
2489 isl_basic_map_free(bmap1);
2490 isl_basic_map_free(bmap2);
2494 struct isl_basic_set *isl_basic_set_apply(
2495 struct isl_basic_set *bset, struct isl_basic_map *bmap)
2500 isl_assert(bset->ctx, isl_basic_map_compatible_domain(bmap, bset),
2503 return (struct isl_basic_set *)
2504 isl_basic_map_apply_range((struct isl_basic_map *)bset, bmap);
2506 isl_basic_set_free(bset);
2507 isl_basic_map_free(bmap);
2511 struct isl_basic_map *isl_basic_map_apply_domain(
2512 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
2514 if (!bmap1 || !bmap2)
2517 isl_assert(bmap1->ctx,
2518 isl_basic_map_n_in(bmap1) == isl_basic_map_n_in(bmap2), goto error);
2519 isl_assert(bmap1->ctx,
2520 isl_basic_map_n_param(bmap1) == isl_basic_map_n_param(bmap2),
2523 bmap1 = isl_basic_map_reverse(bmap1);
2524 bmap1 = isl_basic_map_apply_range(bmap1, bmap2);
2525 return isl_basic_map_reverse(bmap1);
2527 isl_basic_map_free(bmap1);
2528 isl_basic_map_free(bmap2);
2532 /* Given two basic maps A -> f(A) and B -> g(B), construct a basic map
2533 * A \cap B -> f(A) + f(B)
2535 struct isl_basic_map *isl_basic_map_sum(
2536 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
2538 unsigned n_in, n_out, nparam, total, pos;
2539 struct isl_basic_map *bmap = NULL;
2540 struct isl_dim_map *dim_map1, *dim_map2;
2543 if (!bmap1 || !bmap2)
2546 isl_assert(bmap1->ctx, isl_dim_equal(bmap1->dim, bmap2->dim),
2549 nparam = isl_basic_map_n_param(bmap1);
2550 n_in = isl_basic_map_n_in(bmap1);
2551 n_out = isl_basic_map_n_out(bmap1);
2553 total = nparam + n_in + n_out + bmap1->n_div + bmap2->n_div + 2 * n_out;
2554 dim_map1 = isl_dim_map_alloc(bmap1->ctx, total);
2555 dim_map2 = isl_dim_map_alloc(bmap2->ctx, total);
2556 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_param, pos = 0);
2557 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_param, pos);
2558 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_in, pos += nparam);
2559 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_in, pos);
2560 isl_dim_map_div(dim_map1, bmap1, pos += n_in + n_out);
2561 isl_dim_map_div(dim_map2, bmap2, pos += bmap1->n_div);
2562 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_out, pos += bmap2->n_div);
2563 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_out, pos += n_out);
2565 bmap = isl_basic_map_alloc_dim(isl_dim_copy(bmap1->dim),
2566 bmap1->n_div + bmap2->n_div + 2 * n_out,
2567 bmap1->n_eq + bmap2->n_eq + n_out,
2568 bmap1->n_ineq + bmap2->n_ineq);
2569 for (i = 0; i < n_out; ++i) {
2570 int j = isl_basic_map_alloc_equality(bmap);
2573 isl_seq_clr(bmap->eq[j], 1+total);
2574 isl_int_set_si(bmap->eq[j][1+nparam+n_in+i], -1);
2575 isl_int_set_si(bmap->eq[j][1+pos+i], 1);
2576 isl_int_set_si(bmap->eq[j][1+pos-n_out+i], 1);
2578 bmap = add_constraints_dim_map(bmap, bmap1, dim_map1);
2579 bmap = add_constraints_dim_map(bmap, bmap2, dim_map2);
2580 bmap = add_divs(bmap, 2 * n_out);
2582 bmap = isl_basic_map_simplify(bmap);
2583 return isl_basic_map_finalize(bmap);
2585 isl_basic_map_free(bmap);
2586 isl_basic_map_free(bmap1);
2587 isl_basic_map_free(bmap2);
2591 /* Given two maps A -> f(A) and B -> g(B), construct a map
2592 * A \cap B -> f(A) + f(B)
2594 struct isl_map *isl_map_sum(struct isl_map *map1, struct isl_map *map2)
2596 struct isl_map *result;
2602 isl_assert(map1->ctx, isl_dim_equal(map1->dim, map2->dim), goto error);
2604 result = isl_map_alloc_dim(isl_dim_copy(map1->dim),
2605 map1->n * map2->n, 0);
2608 for (i = 0; i < map1->n; ++i)
2609 for (j = 0; j < map2->n; ++j) {
2610 struct isl_basic_map *part;
2611 part = isl_basic_map_sum(
2612 isl_basic_map_copy(map1->p[i]),
2613 isl_basic_map_copy(map2->p[j]));
2614 if (isl_basic_map_is_empty(part))
2615 isl_basic_map_free(part);
2617 result = isl_map_add_basic_map(result, part);
2630 __isl_give isl_set *isl_set_sum(__isl_take isl_set *set1,
2631 __isl_take isl_set *set2)
2633 return (isl_set *)isl_map_sum((isl_map *)set1, (isl_map *)set2);
2636 /* Given a basic map A -> f(A), construct A -> -f(A).
2638 struct isl_basic_map *isl_basic_map_neg(struct isl_basic_map *bmap)
2643 bmap = isl_basic_map_cow(bmap);
2647 n = isl_basic_map_dim(bmap, isl_dim_out);
2648 off = isl_basic_map_offset(bmap, isl_dim_out);
2649 for (i = 0; i < bmap->n_eq; ++i)
2650 for (j = 0; j < n; ++j)
2651 isl_int_neg(bmap->eq[i][off+j], bmap->eq[i][off+j]);
2652 for (i = 0; i < bmap->n_ineq; ++i)
2653 for (j = 0; j < n; ++j)
2654 isl_int_neg(bmap->ineq[i][off+j], bmap->ineq[i][off+j]);
2655 for (i = 0; i < bmap->n_div; ++i)
2656 for (j = 0; j < n; ++j)
2657 isl_int_neg(bmap->div[i][1+off+j], bmap->div[i][1+off+j]);
2658 return isl_basic_map_finalize(bmap);
2661 /* Given a map A -> f(A), construct A -> -f(A).
2663 struct isl_map *isl_map_neg(struct isl_map *map)
2667 map = isl_map_cow(map);
2671 for (i = 0; i < map->n; ++i) {
2672 map->p[i] = isl_basic_map_neg(map->p[i]);
2683 __isl_give isl_set *isl_set_neg(__isl_take isl_set *set)
2685 return (isl_set *)isl_map_neg((isl_map *)set);
2688 /* Given a basic map A -> f(A) and an integer d, construct a basic map
2689 * A -> floor(f(A)/d).
2691 struct isl_basic_map *isl_basic_map_floordiv(struct isl_basic_map *bmap,
2694 unsigned n_in, n_out, nparam, total, pos;
2695 struct isl_basic_map *result = NULL;
2696 struct isl_dim_map *dim_map;
2702 nparam = isl_basic_map_n_param(bmap);
2703 n_in = isl_basic_map_n_in(bmap);
2704 n_out = isl_basic_map_n_out(bmap);
2706 total = nparam + n_in + n_out + bmap->n_div + n_out;
2707 dim_map = isl_dim_map_alloc(bmap->ctx, total);
2708 isl_dim_map_dim(dim_map, bmap->dim, isl_dim_param, pos = 0);
2709 isl_dim_map_dim(dim_map, bmap->dim, isl_dim_in, pos += nparam);
2710 isl_dim_map_div(dim_map, bmap, pos += n_in + n_out);
2711 isl_dim_map_dim(dim_map, bmap->dim, isl_dim_out, pos += bmap->n_div);
2713 result = isl_basic_map_alloc_dim(isl_dim_copy(bmap->dim),
2714 bmap->n_div + n_out,
2715 bmap->n_eq, bmap->n_ineq + 2 * n_out);
2716 result = add_constraints_dim_map(result, bmap, dim_map);
2717 result = add_divs(result, n_out);
2718 for (i = 0; i < n_out; ++i) {
2720 j = isl_basic_map_alloc_inequality(result);
2723 isl_seq_clr(result->ineq[j], 1+total);
2724 isl_int_neg(result->ineq[j][1+nparam+n_in+i], d);
2725 isl_int_set_si(result->ineq[j][1+pos+i], 1);
2726 j = isl_basic_map_alloc_inequality(result);
2729 isl_seq_clr(result->ineq[j], 1+total);
2730 isl_int_set(result->ineq[j][1+nparam+n_in+i], d);
2731 isl_int_set_si(result->ineq[j][1+pos+i], -1);
2732 isl_int_sub_ui(result->ineq[j][0], d, 1);
2735 result = isl_basic_map_simplify(result);
2736 return isl_basic_map_finalize(result);
2738 isl_basic_map_free(result);
2742 /* Given a map A -> f(A) and an integer d, construct a map
2743 * A -> floor(f(A)/d).
2745 struct isl_map *isl_map_floordiv(struct isl_map *map, isl_int d)
2749 map = isl_map_cow(map);
2753 ISL_F_CLR(map, ISL_MAP_DISJOINT);
2754 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
2755 for (i = 0; i < map->n; ++i) {
2756 map->p[i] = isl_basic_map_floordiv(map->p[i], d);
2767 static struct isl_basic_map *var_equal(struct isl_basic_map *bmap, unsigned pos)
2773 i = isl_basic_map_alloc_equality(bmap);
2776 nparam = isl_basic_map_n_param(bmap);
2777 n_in = isl_basic_map_n_in(bmap);
2778 isl_seq_clr(bmap->eq[i], 1 + isl_basic_map_total_dim(bmap));
2779 isl_int_set_si(bmap->eq[i][1+nparam+pos], -1);
2780 isl_int_set_si(bmap->eq[i][1+nparam+n_in+pos], 1);
2781 return isl_basic_map_finalize(bmap);
2783 isl_basic_map_free(bmap);
2787 /* Add a constraints to "bmap" expressing i_pos < o_pos
2789 static struct isl_basic_map *var_less(struct isl_basic_map *bmap, unsigned pos)
2795 i = isl_basic_map_alloc_inequality(bmap);
2798 nparam = isl_basic_map_n_param(bmap);
2799 n_in = isl_basic_map_n_in(bmap);
2800 isl_seq_clr(bmap->ineq[i], 1 + isl_basic_map_total_dim(bmap));
2801 isl_int_set_si(bmap->ineq[i][0], -1);
2802 isl_int_set_si(bmap->ineq[i][1+nparam+pos], -1);
2803 isl_int_set_si(bmap->ineq[i][1+nparam+n_in+pos], 1);
2804 return isl_basic_map_finalize(bmap);
2806 isl_basic_map_free(bmap);
2810 /* Add a constraint to "bmap" expressing i_pos <= o_pos
2812 static __isl_give isl_basic_map *var_less_or_equal(
2813 __isl_take isl_basic_map *bmap, unsigned pos)
2819 i = isl_basic_map_alloc_inequality(bmap);
2822 nparam = isl_basic_map_n_param(bmap);
2823 n_in = isl_basic_map_n_in(bmap);
2824 isl_seq_clr(bmap->ineq[i], 1 + isl_basic_map_total_dim(bmap));
2825 isl_int_set_si(bmap->ineq[i][1+nparam+pos], -1);
2826 isl_int_set_si(bmap->ineq[i][1+nparam+n_in+pos], 1);
2827 return isl_basic_map_finalize(bmap);
2829 isl_basic_map_free(bmap);
2833 /* Add a constraints to "bmap" expressing i_pos > o_pos
2835 static struct isl_basic_map *var_more(struct isl_basic_map *bmap, unsigned pos)
2841 i = isl_basic_map_alloc_inequality(bmap);
2844 nparam = isl_basic_map_n_param(bmap);
2845 n_in = isl_basic_map_n_in(bmap);
2846 isl_seq_clr(bmap->ineq[i], 1 + isl_basic_map_total_dim(bmap));
2847 isl_int_set_si(bmap->ineq[i][0], -1);
2848 isl_int_set_si(bmap->ineq[i][1+nparam+pos], 1);
2849 isl_int_set_si(bmap->ineq[i][1+nparam+n_in+pos], -1);
2850 return isl_basic_map_finalize(bmap);
2852 isl_basic_map_free(bmap);
2856 /* Add a constraint to "bmap" expressing i_pos >= o_pos
2858 static __isl_give isl_basic_map *var_more_or_equal(
2859 __isl_take isl_basic_map *bmap, unsigned pos)
2865 i = isl_basic_map_alloc_inequality(bmap);
2868 nparam = isl_basic_map_n_param(bmap);
2869 n_in = isl_basic_map_n_in(bmap);
2870 isl_seq_clr(bmap->ineq[i], 1 + isl_basic_map_total_dim(bmap));
2871 isl_int_set_si(bmap->ineq[i][1+nparam+pos], 1);
2872 isl_int_set_si(bmap->ineq[i][1+nparam+n_in+pos], -1);
2873 return isl_basic_map_finalize(bmap);
2875 isl_basic_map_free(bmap);
2879 struct isl_basic_map *isl_basic_map_equal(struct isl_dim *dim, unsigned n_equal)
2882 struct isl_basic_map *bmap;
2883 bmap = isl_basic_map_alloc_dim(dim, 0, n_equal, 0);
2886 for (i = 0; i < n_equal && bmap; ++i)
2887 bmap = var_equal(bmap, i);
2888 return isl_basic_map_finalize(bmap);
2891 /* Return a relation on of dimension "dim" expressing i_[0..pos] << o_[0..pos]
2893 struct isl_basic_map *isl_basic_map_less_at(struct isl_dim *dim, unsigned pos)
2896 struct isl_basic_map *bmap;
2897 bmap = isl_basic_map_alloc_dim(dim, 0, pos, 1);
2900 for (i = 0; i < pos && bmap; ++i)
2901 bmap = var_equal(bmap, i);
2903 bmap = var_less(bmap, pos);
2904 return isl_basic_map_finalize(bmap);
2907 /* Return a relation on of dimension "dim" expressing i_[0..pos] <<= o_[0..pos]
2909 __isl_give isl_basic_map *isl_basic_map_less_or_equal_at(
2910 __isl_take isl_dim *dim, unsigned pos)
2913 isl_basic_map *bmap;
2915 bmap = isl_basic_map_alloc_dim(dim, 0, pos, 1);
2916 for (i = 0; i < pos; ++i)
2917 bmap = var_equal(bmap, i);
2918 bmap = var_less_or_equal(bmap, pos);
2919 return isl_basic_map_finalize(bmap);
2922 /* Return a relation on pairs of sets of dimension "dim" expressing i_pos > o_pos
2924 struct isl_basic_map *isl_basic_map_more_at(struct isl_dim *dim, unsigned pos)
2927 struct isl_basic_map *bmap;
2928 bmap = isl_basic_map_alloc_dim(dim, 0, pos, 1);
2931 for (i = 0; i < pos && bmap; ++i)
2932 bmap = var_equal(bmap, i);
2934 bmap = var_more(bmap, pos);
2935 return isl_basic_map_finalize(bmap);
2938 /* Return a relation on of dimension "dim" expressing i_[0..pos] >>= o_[0..pos]
2940 __isl_give isl_basic_map *isl_basic_map_more_or_equal_at(
2941 __isl_take isl_dim *dim, unsigned pos)
2944 isl_basic_map *bmap;
2946 bmap = isl_basic_map_alloc_dim(dim, 0, pos, 1);
2947 for (i = 0; i < pos; ++i)
2948 bmap = var_equal(bmap, i);
2949 bmap = var_more_or_equal(bmap, pos);
2950 return isl_basic_map_finalize(bmap);
2953 static __isl_give isl_map *map_lex_lte_first(__isl_take isl_dim *dims,
2954 unsigned n, int equal)
2956 struct isl_map *map;
2959 map = isl_map_alloc_dim(isl_dim_copy(dims), n, ISL_MAP_DISJOINT);
2961 for (i = 0; i + 1 < n; ++i)
2962 map = isl_map_add_basic_map(map,
2963 isl_basic_map_less_at(isl_dim_copy(dims), i));
2966 map = isl_map_add_basic_map(map,
2967 isl_basic_map_less_or_equal_at(dims, n - 1));
2969 map = isl_map_add_basic_map(map,
2970 isl_basic_map_less_at(dims, n - 1));
2977 static __isl_give isl_map *map_lex_lte(__isl_take isl_dim *dims, int equal)
2981 return map_lex_lte_first(dims, dims->n_out, equal);
2984 __isl_give isl_map *isl_map_lex_lt_first(__isl_take isl_dim *dim, unsigned n)
2986 return map_lex_lte_first(dim, n, 0);
2989 __isl_give isl_map *isl_map_lex_le_first(__isl_take isl_dim *dim, unsigned n)
2991 return map_lex_lte_first(dim, n, 1);
2994 __isl_give isl_map *isl_map_lex_lt(__isl_take isl_dim *set_dim)
2996 return map_lex_lte(isl_dim_map(set_dim), 0);
2999 __isl_give isl_map *isl_map_lex_le(__isl_take isl_dim *set_dim)
3001 return map_lex_lte(isl_dim_map(set_dim), 1);
3004 static __isl_give isl_map *map_lex_gte_first(__isl_take isl_dim *dims,
3005 unsigned n, int equal)
3007 struct isl_map *map;
3010 map = isl_map_alloc_dim(isl_dim_copy(dims), n, ISL_MAP_DISJOINT);
3012 for (i = 0; i + 1 < n; ++i)
3013 map = isl_map_add_basic_map(map,
3014 isl_basic_map_more_at(isl_dim_copy(dims), i));
3017 map = isl_map_add_basic_map(map,
3018 isl_basic_map_more_or_equal_at(dims, n - 1));
3020 map = isl_map_add_basic_map(map,
3021 isl_basic_map_more_at(dims, n - 1));
3028 static __isl_give isl_map *map_lex_gte(__isl_take isl_dim *dims, int equal)
3032 return map_lex_gte_first(dims, dims->n_out, equal);
3035 __isl_give isl_map *isl_map_lex_gt_first(__isl_take isl_dim *dim, unsigned n)
3037 return map_lex_gte_first(dim, n, 0);
3040 __isl_give isl_map *isl_map_lex_ge_first(__isl_take isl_dim *dim, unsigned n)
3042 return map_lex_gte_first(dim, n, 1);
3045 __isl_give isl_map *isl_map_lex_gt(__isl_take isl_dim *set_dim)
3047 return map_lex_gte(isl_dim_map(set_dim), 0);
3050 __isl_give isl_map *isl_map_lex_ge(__isl_take isl_dim *set_dim)
3052 return map_lex_gte(isl_dim_map(set_dim), 1);
3055 struct isl_basic_map *isl_basic_map_from_basic_set(
3056 struct isl_basic_set *bset, struct isl_dim *dim)
3058 struct isl_basic_map *bmap;
3060 bset = isl_basic_set_cow(bset);
3064 isl_assert(bset->ctx, isl_dim_compatible(bset->dim, dim), goto error);
3065 isl_dim_free(bset->dim);
3066 bmap = (struct isl_basic_map *) bset;
3068 return isl_basic_map_finalize(bmap);
3070 isl_basic_set_free(bset);
3075 struct isl_basic_set *isl_basic_set_from_basic_map(struct isl_basic_map *bmap)
3079 if (bmap->dim->n_in == 0)
3080 return (struct isl_basic_set *)bmap;
3081 bmap = isl_basic_map_cow(bmap);
3084 bmap->dim = isl_dim_cow(bmap->dim);
3087 bmap->dim->n_out += bmap->dim->n_in;
3088 bmap->dim->n_in = 0;
3089 bmap = isl_basic_map_finalize(bmap);
3090 return (struct isl_basic_set *)bmap;
3092 isl_basic_map_free(bmap);
3096 /* For a div d = floor(f/m), add the constraints
3099 * -(f-(n-1)) + m d >= 0
3101 * Note that the second constraint is the negation of
3105 int isl_basic_map_add_div_constraints_var(__isl_keep isl_basic_map *bmap,
3106 unsigned pos, isl_int *div)
3109 unsigned total = isl_basic_map_total_dim(bmap);
3111 i = isl_basic_map_alloc_inequality(bmap);
3114 isl_seq_cpy(bmap->ineq[i], div + 1, 1 + total);
3115 isl_int_neg(bmap->ineq[i][1 + pos], div[0]);
3117 j = isl_basic_map_alloc_inequality(bmap);
3120 isl_seq_neg(bmap->ineq[j], bmap->ineq[i], 1 + total);
3121 isl_int_add(bmap->ineq[j][0], bmap->ineq[j][0], bmap->ineq[j][1 + pos]);
3122 isl_int_sub_ui(bmap->ineq[j][0], bmap->ineq[j][0], 1);
3126 int isl_basic_set_add_div_constraints_var(__isl_keep isl_basic_set *bset,
3127 unsigned pos, isl_int *div)
3129 return isl_basic_map_add_div_constraints_var((isl_basic_map *)bset,
3133 int isl_basic_map_add_div_constraints(struct isl_basic_map *bmap, unsigned div)
3135 unsigned total = isl_basic_map_total_dim(bmap);
3136 unsigned div_pos = total - bmap->n_div + div;
3138 return isl_basic_map_add_div_constraints_var(bmap, div_pos,
3142 struct isl_basic_set *isl_basic_map_underlying_set(
3143 struct isl_basic_map *bmap)
3147 if (bmap->dim->nparam == 0 && bmap->dim->n_in == 0 && bmap->n_div == 0)
3148 return (struct isl_basic_set *)bmap;
3149 bmap = isl_basic_map_cow(bmap);
3152 bmap->dim = isl_dim_underlying(bmap->dim, bmap->n_div);
3155 bmap->extra -= bmap->n_div;
3157 bmap = isl_basic_map_finalize(bmap);
3158 return (struct isl_basic_set *)bmap;
3163 __isl_give isl_basic_set *isl_basic_set_underlying_set(
3164 __isl_take isl_basic_set *bset)
3166 return isl_basic_map_underlying_set((isl_basic_map *)bset);
3169 struct isl_basic_map *isl_basic_map_overlying_set(
3170 struct isl_basic_set *bset, struct isl_basic_map *like)
3172 struct isl_basic_map *bmap;
3173 struct isl_ctx *ctx;
3180 isl_assert(ctx, bset->n_div == 0, goto error);
3181 isl_assert(ctx, isl_basic_set_n_param(bset) == 0, goto error);
3182 isl_assert(ctx, bset->dim->n_out == isl_basic_map_total_dim(like),
3184 if (isl_dim_equal(bset->dim, like->dim) && like->n_div == 0) {
3185 isl_basic_map_free(like);
3186 return (struct isl_basic_map *)bset;
3188 bset = isl_basic_set_cow(bset);
3191 total = bset->dim->n_out + bset->extra;
3192 bmap = (struct isl_basic_map *)bset;
3193 isl_dim_free(bmap->dim);
3194 bmap->dim = isl_dim_copy(like->dim);
3197 bmap->n_div = like->n_div;
3198 bmap->extra += like->n_div;
3201 ltotal = total - bmap->extra + like->extra;
3204 bmap->block2 = isl_blk_extend(ctx, bmap->block2,
3205 bmap->extra * (1 + 1 + total));
3206 if (isl_blk_is_error(bmap->block2))
3208 bmap->div = isl_realloc_array(ctx, bmap->div, isl_int *,
3212 for (i = 0; i < bmap->extra; ++i)
3213 bmap->div[i] = bmap->block2.data + i * (1 + 1 + total);
3214 for (i = 0; i < like->n_div; ++i) {
3215 isl_seq_cpy(bmap->div[i], like->div[i], 1 + 1 + ltotal);
3216 isl_seq_clr(bmap->div[i]+1+1+ltotal, total - ltotal);
3218 bmap = isl_basic_map_extend_constraints(bmap,
3219 0, 2 * like->n_div);
3220 for (i = 0; i < like->n_div; ++i) {
3221 if (isl_int_is_zero(bmap->div[i][0]))
3223 if (isl_basic_map_add_div_constraints(bmap, i) < 0)
3227 isl_basic_map_free(like);
3228 bmap = isl_basic_map_simplify(bmap);
3229 bmap = isl_basic_map_finalize(bmap);
3232 isl_basic_map_free(like);
3233 isl_basic_set_free(bset);
3237 struct isl_basic_set *isl_basic_set_from_underlying_set(
3238 struct isl_basic_set *bset, struct isl_basic_set *like)
3240 return (struct isl_basic_set *)
3241 isl_basic_map_overlying_set(bset, (struct isl_basic_map *)like);
3244 struct isl_set *isl_set_from_underlying_set(
3245 struct isl_set *set, struct isl_basic_set *like)
3251 isl_assert(set->ctx, set->dim->n_out == isl_basic_set_total_dim(like),
3253 if (isl_dim_equal(set->dim, like->dim) && like->n_div == 0) {
3254 isl_basic_set_free(like);
3257 set = isl_set_cow(set);
3260 for (i = 0; i < set->n; ++i) {
3261 set->p[i] = isl_basic_set_from_underlying_set(set->p[i],
3262 isl_basic_set_copy(like));
3266 isl_dim_free(set->dim);
3267 set->dim = isl_dim_copy(like->dim);
3270 isl_basic_set_free(like);
3273 isl_basic_set_free(like);
3278 struct isl_set *isl_map_underlying_set(struct isl_map *map)
3282 map = isl_map_cow(map);
3285 map->dim = isl_dim_cow(map->dim);
3289 for (i = 1; i < map->n; ++i)
3290 isl_assert(map->ctx, map->p[0]->n_div == map->p[i]->n_div,
3292 for (i = 0; i < map->n; ++i) {
3293 map->p[i] = (struct isl_basic_map *)
3294 isl_basic_map_underlying_set(map->p[i]);
3299 map->dim = isl_dim_underlying(map->dim, 0);
3301 isl_dim_free(map->dim);
3302 map->dim = isl_dim_copy(map->p[0]->dim);
3306 return (struct isl_set *)map;
3312 struct isl_set *isl_set_to_underlying_set(struct isl_set *set)
3314 return (struct isl_set *)isl_map_underlying_set((struct isl_map *)set);
3317 struct isl_basic_set *isl_basic_map_domain(struct isl_basic_map *bmap)
3319 struct isl_basic_set *domain;
3324 n_in = isl_basic_map_n_in(bmap);
3325 n_out = isl_basic_map_n_out(bmap);
3326 domain = isl_basic_set_from_basic_map(bmap);
3327 return isl_basic_set_project_out(domain, isl_dim_set, n_in, n_out);
3330 struct isl_basic_set *isl_basic_map_range(struct isl_basic_map *bmap)
3332 return isl_basic_map_domain(isl_basic_map_reverse(bmap));
3335 struct isl_set *isl_map_range(struct isl_map *map)
3338 struct isl_set *set;
3342 if (isl_map_dim(map, isl_dim_in) == 0)
3343 return (isl_set *)map;
3345 map = isl_map_cow(map);
3349 set = (struct isl_set *) map;
3350 set->dim = isl_dim_drop_inputs(set->dim, 0, set->dim->n_in);
3353 for (i = 0; i < map->n; ++i) {
3354 set->p[i] = isl_basic_map_range(map->p[i]);
3358 ISL_F_CLR(set, ISL_MAP_DISJOINT);
3359 ISL_F_CLR(set, ISL_SET_NORMALIZED);
3366 struct isl_map *isl_map_from_set(struct isl_set *set, struct isl_dim *dim)
3369 struct isl_map *map = NULL;
3371 set = isl_set_cow(set);
3374 isl_assert(set->ctx, isl_dim_compatible(set->dim, dim), goto error);
3375 map = (struct isl_map *)set;
3376 for (i = 0; i < set->n; ++i) {
3377 map->p[i] = isl_basic_map_from_basic_set(
3378 set->p[i], isl_dim_copy(dim));
3382 isl_dim_free(map->dim);
3391 struct isl_map *isl_map_from_range(struct isl_set *set)
3393 return (struct isl_map *)set;
3396 __isl_give isl_map *isl_map_from_domain(__isl_take isl_set *set)
3398 return isl_map_reverse(isl_map_from_range(set));;
3401 __isl_give isl_map *isl_map_from_domain_and_range(__isl_take isl_set *domain,
3402 __isl_take isl_set *range)
3404 return isl_map_product(isl_map_from_domain(domain),
3405 isl_map_from_range(range));
3408 struct isl_set *isl_set_from_map(struct isl_map *map)
3411 struct isl_set *set = NULL;
3415 map = isl_map_cow(map);
3418 map->dim = isl_dim_cow(map->dim);
3421 map->dim->n_out += map->dim->n_in;
3423 set = (struct isl_set *)map;
3424 for (i = 0; i < map->n; ++i) {
3425 set->p[i] = isl_basic_set_from_basic_map(map->p[i]);
3435 struct isl_map *isl_map_alloc_dim(struct isl_dim *dim, int n, unsigned flags)
3437 struct isl_map *map;
3441 isl_assert(dim->ctx, n >= 0, return NULL);
3442 map = isl_alloc(dim->ctx, struct isl_map,
3443 sizeof(struct isl_map) +
3444 (n - 1) * sizeof(struct isl_basic_map *));
3448 map->ctx = dim->ctx;
3449 isl_ctx_ref(map->ctx);
3461 struct isl_map *isl_map_alloc(struct isl_ctx *ctx,
3462 unsigned nparam, unsigned in, unsigned out, int n,
3465 struct isl_map *map;
3466 struct isl_dim *dims;
3468 dims = isl_dim_alloc(ctx, nparam, in, out);
3472 map = isl_map_alloc_dim(dims, n, flags);
3476 struct isl_basic_map *isl_basic_map_empty(struct isl_dim *dim)
3478 struct isl_basic_map *bmap;
3479 bmap = isl_basic_map_alloc_dim(dim, 0, 1, 0);
3480 bmap = isl_basic_map_set_to_empty(bmap);
3484 struct isl_basic_set *isl_basic_set_empty(struct isl_dim *dim)
3486 struct isl_basic_set *bset;
3487 bset = isl_basic_set_alloc_dim(dim, 0, 1, 0);
3488 bset = isl_basic_set_set_to_empty(bset);
3492 struct isl_basic_map *isl_basic_map_empty_like(struct isl_basic_map *model)
3494 struct isl_basic_map *bmap;
3497 bmap = isl_basic_map_alloc_dim(isl_dim_copy(model->dim), 0, 1, 0);
3498 bmap = isl_basic_map_set_to_empty(bmap);
3502 struct isl_basic_map *isl_basic_map_empty_like_map(struct isl_map *model)
3504 struct isl_basic_map *bmap;
3507 bmap = isl_basic_map_alloc_dim(isl_dim_copy(model->dim), 0, 1, 0);
3508 bmap = isl_basic_map_set_to_empty(bmap);
3512 struct isl_basic_set *isl_basic_set_empty_like(struct isl_basic_set *model)
3514 struct isl_basic_set *bset;
3517 bset = isl_basic_set_alloc_dim(isl_dim_copy(model->dim), 0, 1, 0);
3518 bset = isl_basic_set_set_to_empty(bset);
3522 struct isl_basic_map *isl_basic_map_universe(struct isl_dim *dim)
3524 struct isl_basic_map *bmap;
3525 bmap = isl_basic_map_alloc_dim(dim, 0, 0, 0);
3529 struct isl_basic_set *isl_basic_set_universe(struct isl_dim *dim)
3531 struct isl_basic_set *bset;
3532 bset = isl_basic_set_alloc_dim(dim, 0, 0, 0);
3536 __isl_give isl_basic_map *isl_basic_map_universe_like(
3537 __isl_keep isl_basic_map *model)
3541 return isl_basic_map_alloc_dim(isl_dim_copy(model->dim), 0, 0, 0);
3544 struct isl_basic_set *isl_basic_set_universe_like(struct isl_basic_set *model)
3548 return isl_basic_set_alloc_dim(isl_dim_copy(model->dim), 0, 0, 0);
3551 __isl_give isl_basic_set *isl_basic_set_universe_like_set(
3552 __isl_keep isl_set *model)
3556 return isl_basic_set_alloc_dim(isl_dim_copy(model->dim), 0, 0, 0);
3559 struct isl_map *isl_map_empty(struct isl_dim *dim)
3561 return isl_map_alloc_dim(dim, 0, ISL_MAP_DISJOINT);
3564 struct isl_map *isl_map_empty_like(struct isl_map *model)
3568 return isl_map_alloc_dim(isl_dim_copy(model->dim), 0, ISL_MAP_DISJOINT);
3571 struct isl_map *isl_map_empty_like_basic_map(struct isl_basic_map *model)
3575 return isl_map_alloc_dim(isl_dim_copy(model->dim), 0, ISL_MAP_DISJOINT);
3578 struct isl_set *isl_set_empty(struct isl_dim *dim)
3580 return isl_set_alloc_dim(dim, 0, ISL_MAP_DISJOINT);
3583 struct isl_set *isl_set_empty_like(struct isl_set *model)
3587 return isl_set_empty(isl_dim_copy(model->dim));
3590 struct isl_map *isl_map_universe(struct isl_dim *dim)
3592 struct isl_map *map;
3595 map = isl_map_alloc_dim(isl_dim_copy(dim), 1, ISL_MAP_DISJOINT);
3596 map = isl_map_add_basic_map(map, isl_basic_map_universe(dim));
3600 struct isl_set *isl_set_universe(struct isl_dim *dim)
3602 struct isl_set *set;
3605 set = isl_set_alloc_dim(isl_dim_copy(dim), 1, ISL_MAP_DISJOINT);
3606 set = isl_set_add_basic_set(set, isl_basic_set_universe(dim));
3610 __isl_give isl_set *isl_set_universe_like(__isl_keep isl_set *model)
3614 return isl_set_universe(isl_dim_copy(model->dim));
3617 struct isl_map *isl_map_dup(struct isl_map *map)
3620 struct isl_map *dup;
3624 dup = isl_map_alloc_dim(isl_dim_copy(map->dim), map->n, map->flags);
3625 for (i = 0; i < map->n; ++i)
3626 dup = isl_map_add_basic_map(dup, isl_basic_map_copy(map->p[i]));
3630 __isl_give isl_map *isl_map_add_basic_map(__isl_take isl_map *map,
3631 __isl_take isl_basic_map *bmap)
3635 if (isl_basic_map_fast_is_empty(bmap)) {
3636 isl_basic_map_free(bmap);
3639 isl_assert(map->ctx, isl_dim_equal(map->dim, bmap->dim), goto error);
3640 isl_assert(map->ctx, map->n < map->size, goto error);
3641 map->p[map->n] = bmap;
3643 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
3649 isl_basic_map_free(bmap);
3653 void isl_map_free(struct isl_map *map)
3663 isl_ctx_deref(map->ctx);
3664 for (i = 0; i < map->n; ++i)
3665 isl_basic_map_free(map->p[i]);
3666 isl_dim_free(map->dim);
3670 struct isl_map *isl_map_extend(struct isl_map *base,
3671 unsigned nparam, unsigned n_in, unsigned n_out)
3675 base = isl_map_cow(base);
3679 base->dim = isl_dim_extend(base->dim, nparam, n_in, n_out);
3682 for (i = 0; i < base->n; ++i) {
3683 base->p[i] = isl_basic_map_extend_dim(base->p[i],
3684 isl_dim_copy(base->dim), 0, 0, 0);
3694 struct isl_set *isl_set_extend(struct isl_set *base,
3695 unsigned nparam, unsigned dim)
3697 return (struct isl_set *)isl_map_extend((struct isl_map *)base,
3701 static struct isl_basic_map *isl_basic_map_fix_pos_si(
3702 struct isl_basic_map *bmap, unsigned pos, int value)
3706 bmap = isl_basic_map_cow(bmap);
3707 bmap = isl_basic_map_extend_constraints(bmap, 1, 0);
3708 j = isl_basic_map_alloc_equality(bmap);
3711 isl_seq_clr(bmap->eq[j] + 1, isl_basic_map_total_dim(bmap));
3712 isl_int_set_si(bmap->eq[j][pos], -1);
3713 isl_int_set_si(bmap->eq[j][0], value);
3714 bmap = isl_basic_map_simplify(bmap);
3715 return isl_basic_map_finalize(bmap);
3717 isl_basic_map_free(bmap);
3721 static __isl_give isl_basic_map *isl_basic_map_fix_pos(
3722 __isl_take isl_basic_map *bmap, unsigned pos, isl_int value)
3726 bmap = isl_basic_map_cow(bmap);
3727 bmap = isl_basic_map_extend_constraints(bmap, 1, 0);
3728 j = isl_basic_map_alloc_equality(bmap);
3731 isl_seq_clr(bmap->eq[j] + 1, isl_basic_map_total_dim(bmap));
3732 isl_int_set_si(bmap->eq[j][pos], -1);
3733 isl_int_set(bmap->eq[j][0], value);
3734 bmap = isl_basic_map_simplify(bmap);
3735 return isl_basic_map_finalize(bmap);
3737 isl_basic_map_free(bmap);
3741 struct isl_basic_map *isl_basic_map_fix_si(struct isl_basic_map *bmap,
3742 enum isl_dim_type type, unsigned pos, int value)
3746 isl_assert(bmap->ctx, pos < isl_basic_map_dim(bmap, type), goto error);
3747 return isl_basic_map_fix_pos_si(bmap,
3748 isl_basic_map_offset(bmap, type) + pos, value);
3750 isl_basic_map_free(bmap);
3754 __isl_give isl_basic_map *isl_basic_map_fix(__isl_take isl_basic_map *bmap,
3755 enum isl_dim_type type, unsigned pos, isl_int value)
3759 isl_assert(bmap->ctx, pos < isl_basic_map_dim(bmap, type), goto error);
3760 return isl_basic_map_fix_pos(bmap,
3761 isl_basic_map_offset(bmap, type) + pos, value);
3763 isl_basic_map_free(bmap);
3767 struct isl_basic_set *isl_basic_set_fix_si(struct isl_basic_set *bset,
3768 enum isl_dim_type type, unsigned pos, int value)
3770 return (struct isl_basic_set *)
3771 isl_basic_map_fix_si((struct isl_basic_map *)bset,
3775 __isl_give isl_basic_set *isl_basic_set_fix(__isl_take isl_basic_set *bset,
3776 enum isl_dim_type type, unsigned pos, isl_int value)
3778 return (struct isl_basic_set *)
3779 isl_basic_map_fix((struct isl_basic_map *)bset,
3783 struct isl_basic_map *isl_basic_map_fix_input_si(struct isl_basic_map *bmap,
3784 unsigned input, int value)
3786 return isl_basic_map_fix_si(bmap, isl_dim_in, input, value);
3789 struct isl_basic_set *isl_basic_set_fix_dim_si(struct isl_basic_set *bset,
3790 unsigned dim, int value)
3792 return (struct isl_basic_set *)
3793 isl_basic_map_fix_si((struct isl_basic_map *)bset,
3794 isl_dim_set, dim, value);
3797 struct isl_map *isl_map_fix_si(struct isl_map *map,
3798 enum isl_dim_type type, unsigned pos, int value)
3802 map = isl_map_cow(map);
3806 isl_assert(map->ctx, pos < isl_map_dim(map, type), goto error);
3807 for (i = 0; i < map->n; ++i) {
3808 map->p[i] = isl_basic_map_fix_si(map->p[i], type, pos, value);
3812 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
3819 __isl_give isl_set *isl_set_fix_si(__isl_take isl_set *set,
3820 enum isl_dim_type type, unsigned pos, int value)
3822 return (struct isl_set *)
3823 isl_map_fix_si((struct isl_map *)set, type, pos, value);
3826 __isl_give isl_map *isl_map_fix(__isl_take isl_map *map,
3827 enum isl_dim_type type, unsigned pos, isl_int value)
3831 map = isl_map_cow(map);
3835 isl_assert(map->ctx, pos < isl_map_dim(map, type), goto error);
3836 for (i = 0; i < map->n; ++i) {
3837 map->p[i] = isl_basic_map_fix(map->p[i], type, pos, value);
3841 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
3848 __isl_give isl_set *isl_set_fix(__isl_take isl_set *set,
3849 enum isl_dim_type type, unsigned pos, isl_int value)
3851 return (struct isl_set *)isl_map_fix((isl_map *)set, type, pos, value);
3854 struct isl_map *isl_map_fix_input_si(struct isl_map *map,
3855 unsigned input, int value)
3857 return isl_map_fix_si(map, isl_dim_in, input, value);
3860 struct isl_set *isl_set_fix_dim_si(struct isl_set *set, unsigned dim, int value)
3862 return (struct isl_set *)
3863 isl_map_fix_si((struct isl_map *)set, isl_dim_set, dim, value);
3866 __isl_give isl_basic_map *isl_basic_map_lower_bound_si(
3867 __isl_take isl_basic_map *bmap,
3868 enum isl_dim_type type, unsigned pos, int value)
3874 isl_assert(bmap->ctx, pos < isl_basic_map_dim(bmap, type), goto error);
3875 pos += isl_basic_map_offset(bmap, type);
3876 bmap = isl_basic_map_cow(bmap);
3877 bmap = isl_basic_map_extend_constraints(bmap, 0, 1);
3878 j = isl_basic_map_alloc_inequality(bmap);
3881 isl_seq_clr(bmap->ineq[j], 1 + isl_basic_map_total_dim(bmap));
3882 isl_int_set_si(bmap->ineq[j][pos], 1);
3883 isl_int_set_si(bmap->ineq[j][0], -value);
3884 bmap = isl_basic_map_simplify(bmap);
3885 return isl_basic_map_finalize(bmap);
3887 isl_basic_map_free(bmap);
3891 struct isl_basic_set *isl_basic_set_lower_bound_dim(struct isl_basic_set *bset,
3892 unsigned dim, isl_int value)
3896 bset = isl_basic_set_cow(bset);
3897 bset = isl_basic_set_extend_constraints(bset, 0, 1);
3898 j = isl_basic_set_alloc_inequality(bset);
3901 isl_seq_clr(bset->ineq[j], 1 + isl_basic_set_total_dim(bset));
3902 isl_int_set_si(bset->ineq[j][1 + isl_basic_set_n_param(bset) + dim], 1);
3903 isl_int_neg(bset->ineq[j][0], value);
3904 bset = isl_basic_set_simplify(bset);
3905 return isl_basic_set_finalize(bset);
3907 isl_basic_set_free(bset);
3911 __isl_give isl_map *isl_map_lower_bound_si(__isl_take isl_map *map,
3912 enum isl_dim_type type, unsigned pos, int value)
3916 map = isl_map_cow(map);
3920 isl_assert(map->ctx, pos < isl_map_dim(map, type), goto error);
3921 for (i = 0; i < map->n; ++i) {
3922 map->p[i] = isl_basic_map_lower_bound_si(map->p[i],
3927 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
3934 __isl_give isl_set *isl_set_lower_bound_si(__isl_take isl_set *set,
3935 enum isl_dim_type type, unsigned pos, int value)
3937 return (struct isl_set *)
3938 isl_map_lower_bound_si((struct isl_map *)set, type, pos, value);
3941 struct isl_set *isl_set_lower_bound_dim(struct isl_set *set, unsigned dim,
3946 set = isl_set_cow(set);
3950 isl_assert(set->ctx, dim < isl_set_n_dim(set), goto error);
3951 for (i = 0; i < set->n; ++i) {
3952 set->p[i] = isl_basic_set_lower_bound_dim(set->p[i], dim, value);
3962 struct isl_map *isl_map_reverse(struct isl_map *map)
3966 map = isl_map_cow(map);
3970 map->dim = isl_dim_reverse(map->dim);
3973 for (i = 0; i < map->n; ++i) {
3974 map->p[i] = isl_basic_map_reverse(map->p[i]);
3978 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
3985 static struct isl_map *isl_basic_map_partial_lexopt(
3986 struct isl_basic_map *bmap, struct isl_basic_set *dom,
3987 struct isl_set **empty, int max)
3991 if (bmap->ctx->opt->pip == ISL_PIP_PIP)
3992 return isl_pip_basic_map_lexopt(bmap, dom, empty, max);
3994 return isl_tab_basic_map_partial_lexopt(bmap, dom, empty, max);
3996 isl_basic_map_free(bmap);
3997 isl_basic_set_free(dom);
4003 struct isl_map *isl_basic_map_partial_lexmax(
4004 struct isl_basic_map *bmap, struct isl_basic_set *dom,
4005 struct isl_set **empty)
4007 return isl_basic_map_partial_lexopt(bmap, dom, empty, 1);
4010 struct isl_map *isl_basic_map_partial_lexmin(
4011 struct isl_basic_map *bmap, struct isl_basic_set *dom,
4012 struct isl_set **empty)
4014 return isl_basic_map_partial_lexopt(bmap, dom, empty, 0);
4017 struct isl_set *isl_basic_set_partial_lexmin(
4018 struct isl_basic_set *bset, struct isl_basic_set *dom,
4019 struct isl_set **empty)
4021 return (struct isl_set *)
4022 isl_basic_map_partial_lexmin((struct isl_basic_map *)bset,
4026 struct isl_set *isl_basic_set_partial_lexmax(
4027 struct isl_basic_set *bset, struct isl_basic_set *dom,
4028 struct isl_set **empty)
4030 return (struct isl_set *)
4031 isl_basic_map_partial_lexmax((struct isl_basic_map *)bset,
4035 /* Given a basic map "bmap", compute the lexicograhically minimal
4036 * (or maximal) image element for each domain element in dom.
4037 * Set *empty to those elements in dom that do not have an image element.
4039 * We first make sure the basic sets in dom are disjoint and then
4040 * simply collect the results over each of the basic sets separately.
4041 * We could probably improve the efficiency a bit by moving the union
4042 * domain down into the parametric integer programming.
4044 static __isl_give isl_map *basic_map_partial_lexopt(
4045 __isl_take isl_basic_map *bmap, __isl_take isl_set *dom,
4046 __isl_give isl_set **empty, int max)
4049 struct isl_map *res;
4051 dom = isl_set_make_disjoint(dom);
4055 if (isl_set_fast_is_empty(dom)) {
4056 res = isl_map_empty_like_basic_map(bmap);
4057 *empty = isl_set_empty_like(dom);
4059 isl_basic_map_free(bmap);
4063 res = isl_basic_map_partial_lexopt(isl_basic_map_copy(bmap),
4064 isl_basic_set_copy(dom->p[0]), empty, max);
4066 for (i = 1; i < dom->n; ++i) {
4067 struct isl_map *res_i;
4068 struct isl_set *empty_i;
4070 res_i = isl_basic_map_partial_lexopt(isl_basic_map_copy(bmap),
4071 isl_basic_set_copy(dom->p[i]), &empty_i, max);
4073 res = isl_map_union_disjoint(res, res_i);
4074 *empty = isl_set_union_disjoint(*empty, empty_i);
4078 isl_basic_map_free(bmap);
4083 isl_basic_map_free(bmap);
4087 /* Given a map "map", compute the lexicograhically minimal
4088 * (or maximal) image element for each domain element in dom.
4089 * Set *empty to those elements in dom that do not have an image element.
4091 * We first compute the lexicographically minimal or maximal element
4092 * in the first basic map. This results in a partial solution "res"
4093 * and a subset "todo" of dom that still need to be handled.
4094 * We then consider each of the remaining maps in "map" and successively
4095 * improve both "res" and "todo".
4097 * Let res^k and todo^k be the results after k steps and let i = k + 1.
4098 * Assume we are computing the lexicographical maximum.
4099 * We first intersect basic map i with a relation that maps elements
4100 * to elements that are lexicographically larger than the image elements
4101 * in res^k and the compute the maximum image element of this intersection.
4102 * The result ("better") corresponds to those image elements in basic map i
4103 * that are better than what we had before. The remainder ("keep") are the
4104 * domain elements for which the image element in res_k was better.
4105 * We also compute the lexicographical maximum of basic map i in todo^k.
4106 * res^i is the result of the operation + better + those elements in
4107 * res^k that we should keep
4108 * todo^i is the remainder of the maximum operation on todo^k.
4110 static __isl_give isl_map *isl_map_partial_lexopt(
4111 __isl_take isl_map *map, __isl_take isl_set *dom,
4112 __isl_give isl_set **empty, int max)
4115 struct isl_map *res;
4116 struct isl_set *todo;
4121 if (isl_map_fast_is_empty(map)) {
4129 res = basic_map_partial_lexopt(isl_basic_map_copy(map->p[0]),
4130 isl_set_copy(dom), &todo, max);
4132 for (i = 1; i < map->n; ++i) {
4134 struct isl_map *better;
4135 struct isl_set *keep;
4136 struct isl_map *res_i;
4137 struct isl_set *todo_i;
4138 struct isl_dim *dim = isl_map_get_dim(res);
4140 dim = isl_dim_range(dim);
4142 lt = isl_map_lex_lt(dim);
4144 lt = isl_map_lex_gt(dim);
4145 lt = isl_map_apply_range(isl_map_copy(res), lt);
4146 lt = isl_map_intersect(lt,
4147 isl_map_from_basic_map(isl_basic_map_copy(map->p[i])));
4148 better = isl_map_partial_lexopt(lt,
4149 isl_map_domain(isl_map_copy(res)),
4152 res_i = basic_map_partial_lexopt(isl_basic_map_copy(map->p[i]),
4153 todo, &todo_i, max);
4155 res = isl_map_intersect_domain(res, keep);
4156 res = isl_map_union_disjoint(res, res_i);
4157 res = isl_map_union_disjoint(res, better);
4178 __isl_give isl_map *isl_map_partial_lexmax(
4179 __isl_take isl_map *map, __isl_take isl_set *dom,
4180 __isl_give isl_set **empty)
4182 return isl_map_partial_lexopt(map, dom, empty, 1);
4185 __isl_give isl_map *isl_map_partial_lexmin(
4186 __isl_take isl_map *map, __isl_take isl_set *dom,
4187 __isl_give isl_set **empty)
4189 return isl_map_partial_lexopt(map, dom, empty, 0);
4192 __isl_give isl_set *isl_set_partial_lexmin(
4193 __isl_take isl_set *set, __isl_take isl_set *dom,
4194 __isl_give isl_set **empty)
4196 return (struct isl_set *)
4197 isl_map_partial_lexmin((struct isl_map *)set,
4201 __isl_give isl_set *isl_set_partial_lexmax(
4202 __isl_take isl_set *set, __isl_take isl_set *dom,
4203 __isl_give isl_set **empty)
4205 return (struct isl_set *)
4206 isl_map_partial_lexmax((struct isl_map *)set,
4210 __isl_give isl_map *isl_basic_map_lexopt(__isl_take isl_basic_map *bmap, int max)
4212 struct isl_basic_set *dom = NULL;
4213 struct isl_dim *dom_dim;
4217 dom_dim = isl_dim_domain(isl_dim_copy(bmap->dim));
4218 dom = isl_basic_set_universe(dom_dim);
4219 return isl_basic_map_partial_lexopt(bmap, dom, NULL, max);
4221 isl_basic_map_free(bmap);
4225 __isl_give isl_map *isl_basic_map_lexmin(__isl_take isl_basic_map *bmap)
4227 return isl_basic_map_lexopt(bmap, 0);
4230 __isl_give isl_map *isl_basic_map_lexmax(__isl_take isl_basic_map *bmap)
4232 return isl_basic_map_lexopt(bmap, 1);
4235 __isl_give isl_set *isl_basic_set_lexmin(__isl_take isl_basic_set *bset)
4237 return (isl_set *)isl_basic_map_lexmin((isl_basic_map *)bset);
4240 __isl_give isl_set *isl_basic_set_lexmax(__isl_take isl_basic_set *bset)
4242 return (isl_set *)isl_basic_map_lexmax((isl_basic_map *)bset);
4245 __isl_give isl_map *isl_map_lexopt(__isl_take isl_map *map, int max)
4247 struct isl_set *dom = NULL;
4248 struct isl_dim *dom_dim;
4252 dom_dim = isl_dim_domain(isl_dim_copy(map->dim));
4253 dom = isl_set_universe(dom_dim);
4254 return isl_map_partial_lexopt(map, dom, NULL, max);
4260 __isl_give isl_map *isl_map_lexmin(__isl_take isl_map *map)
4262 return isl_map_lexopt(map, 0);
4265 __isl_give isl_map *isl_map_lexmax(__isl_take isl_map *map)
4267 return isl_map_lexopt(map, 1);
4270 __isl_give isl_set *isl_set_lexmin(__isl_take isl_set *set)
4272 return (isl_set *)isl_map_lexmin((isl_map *)set);
4275 __isl_give isl_set *isl_set_lexmax(__isl_take isl_set *set)
4277 return (isl_set *)isl_map_lexmax((isl_map *)set);
4280 static struct isl_map *isl_map_reset_dim(struct isl_map *map,
4281 struct isl_dim *dim)
4288 for (i = 0; i < map->n; ++i) {
4289 isl_dim_free(map->p[i]->dim);
4290 map->p[i]->dim = isl_dim_copy(dim);
4292 isl_dim_free(map->dim);
4302 static struct isl_set *isl_set_reset_dim(struct isl_set *set,
4303 struct isl_dim *dim)
4305 return (struct isl_set *) isl_map_reset_dim((struct isl_map *)set, dim);
4308 /* Apply a preimage specified by "mat" on the parameters of "bset".
4309 * bset is assumed to have only parameters and divs.
4311 static struct isl_basic_set *basic_set_parameter_preimage(
4312 struct isl_basic_set *bset, struct isl_mat *mat)
4319 bset->dim = isl_dim_cow(bset->dim);
4323 nparam = isl_basic_set_dim(bset, isl_dim_param);
4325 isl_assert(bset->ctx, mat->n_row == 1 + nparam, goto error);
4327 bset->dim->nparam = 0;
4328 bset->dim->n_out = nparam;
4329 bset = isl_basic_set_preimage(bset, mat);
4331 bset->dim->nparam = bset->dim->n_out;
4332 bset->dim->n_out = 0;
4337 isl_basic_set_free(bset);
4341 /* Apply a preimage specified by "mat" on the parameters of "set".
4342 * set is assumed to have only parameters and divs.
4344 static struct isl_set *set_parameter_preimage(
4345 struct isl_set *set, struct isl_mat *mat)
4347 struct isl_dim *dim = NULL;
4353 dim = isl_dim_copy(set->dim);
4354 dim = isl_dim_cow(dim);
4358 nparam = isl_set_dim(set, isl_dim_param);
4360 isl_assert(set->ctx, mat->n_row == 1 + nparam, goto error);
4363 dim->n_out = nparam;
4364 isl_set_reset_dim(set, dim);
4365 set = isl_set_preimage(set, mat);
4368 dim = isl_dim_copy(set->dim);
4369 dim = isl_dim_cow(dim);
4372 dim->nparam = dim->n_out;
4374 isl_set_reset_dim(set, dim);
4384 /* Intersect the basic set "bset" with the affine space specified by the
4385 * equalities in "eq".
4387 static struct isl_basic_set *basic_set_append_equalities(
4388 struct isl_basic_set *bset, struct isl_mat *eq)
4396 bset = isl_basic_set_extend_dim(bset, isl_dim_copy(bset->dim), 0,
4401 len = 1 + isl_dim_total(bset->dim) + bset->extra;
4402 for (i = 0; i < eq->n_row; ++i) {
4403 k = isl_basic_set_alloc_equality(bset);
4406 isl_seq_cpy(bset->eq[k], eq->row[i], eq->n_col);
4407 isl_seq_clr(bset->eq[k] + eq->n_col, len - eq->n_col);
4411 bset = isl_basic_set_gauss(bset, NULL);
4412 bset = isl_basic_set_finalize(bset);
4417 isl_basic_set_free(bset);
4421 /* Intersect the set "set" with the affine space specified by the
4422 * equalities in "eq".
4424 static struct isl_set *set_append_equalities(struct isl_set *set,
4432 for (i = 0; i < set->n; ++i) {
4433 set->p[i] = basic_set_append_equalities(set->p[i],
4446 /* Project the given basic set onto its parameter domain, possibly introducing
4447 * new, explicit, existential variables in the constraints.
4448 * The input has parameters and (possibly implicit) existential variables.
4449 * The output has the same parameters, but only
4450 * explicit existentially quantified variables.
4452 * The actual projection is performed by pip, but pip doesn't seem
4453 * to like equalities very much, so we first remove the equalities
4454 * among the parameters by performing a variable compression on
4455 * the parameters. Afterward, an inverse transformation is performed
4456 * and the equalities among the parameters are inserted back in.
4458 static struct isl_set *parameter_compute_divs(struct isl_basic_set *bset)
4462 struct isl_mat *T, *T2;
4463 struct isl_set *set;
4464 unsigned nparam, n_div;
4466 bset = isl_basic_set_cow(bset);
4470 if (bset->n_eq == 0)
4471 return isl_basic_set_lexmin(bset);
4473 isl_basic_set_gauss(bset, NULL);
4475 nparam = isl_basic_set_dim(bset, isl_dim_param);
4476 n_div = isl_basic_set_dim(bset, isl_dim_div);
4478 for (i = 0, j = n_div - 1; i < bset->n_eq && j >= 0; --j) {
4479 if (!isl_int_is_zero(bset->eq[i][1 + nparam + j]))
4482 if (i == bset->n_eq)
4483 return isl_basic_set_lexmin(bset);
4485 eq = isl_mat_sub_alloc(bset->ctx, bset->eq, i, bset->n_eq - i,
4487 eq = isl_mat_cow(eq);
4488 T = isl_mat_variable_compression(isl_mat_copy(eq), &T2);
4489 if (T && T->n_col == 0) {
4493 bset = isl_basic_set_set_to_empty(bset);
4494 return isl_set_from_basic_set(bset);
4496 bset = basic_set_parameter_preimage(bset, T);
4498 set = isl_basic_set_lexmin(bset);
4499 set = set_parameter_preimage(set, T2);
4500 set = set_append_equalities(set, eq);
4504 /* Compute an explicit representation for all the existentially
4505 * quantified variables.
4506 * The input and output dimensions are first turned into parameters.
4507 * compute_divs then returns a map with the same parameters and
4508 * no input or output dimensions and the dimension specification
4509 * is reset to that of the input.
4511 static struct isl_map *compute_divs(struct isl_basic_map *bmap)
4513 struct isl_basic_set *bset;
4514 struct isl_set *set;
4515 struct isl_map *map;
4516 struct isl_dim *dim, *orig_dim = NULL;
4521 bmap = isl_basic_map_cow(bmap);
4525 nparam = isl_basic_map_dim(bmap, isl_dim_param);
4526 n_in = isl_basic_map_dim(bmap, isl_dim_in);
4527 n_out = isl_basic_map_dim(bmap, isl_dim_out);
4528 dim = isl_dim_set_alloc(bmap->ctx, nparam + n_in + n_out, 0);
4532 orig_dim = bmap->dim;
4534 bset = (struct isl_basic_set *)bmap;
4536 set = parameter_compute_divs(bset);
4537 map = (struct isl_map *)set;
4538 map = isl_map_reset_dim(map, orig_dim);
4542 isl_basic_map_free(bmap);
4546 static int basic_map_divs_known(__isl_keep isl_basic_map *bmap)
4554 off = isl_dim_total(bmap->dim);
4555 for (i = 0; i < bmap->n_div; ++i) {
4556 if (isl_int_is_zero(bmap->div[i][0]))
4558 isl_assert(bmap->ctx, isl_int_is_zero(bmap->div[i][1+1+off+i]),
4564 static int map_divs_known(__isl_keep isl_map *map)
4571 for (i = 0; i < map->n; ++i) {
4572 int known = basic_map_divs_known(map->p[i]);
4580 /* If bmap contains any unknown divs, then compute explicit
4581 * expressions for them. However, this computation may be
4582 * quite expensive, so first try to remove divs that aren't
4585 struct isl_map *isl_basic_map_compute_divs(struct isl_basic_map *bmap)
4589 struct isl_map *map;
4591 known = basic_map_divs_known(bmap);
4595 return isl_map_from_basic_map(bmap);
4597 bmap = isl_basic_map_drop_redundant_divs(bmap);
4599 known = basic_map_divs_known(bmap);
4603 return isl_map_from_basic_map(bmap);
4605 map = compute_divs(bmap);
4608 isl_basic_map_free(bmap);
4612 struct isl_map *isl_map_compute_divs(struct isl_map *map)
4616 struct isl_map *res;
4623 known = map_divs_known(map);
4631 res = isl_basic_map_compute_divs(isl_basic_map_copy(map->p[0]));
4632 for (i = 1 ; i < map->n; ++i) {
4634 r2 = isl_basic_map_compute_divs(isl_basic_map_copy(map->p[i]));
4635 if (ISL_F_ISSET(map, ISL_MAP_DISJOINT))
4636 res = isl_map_union_disjoint(res, r2);
4638 res = isl_map_union(res, r2);
4645 struct isl_set *isl_basic_set_compute_divs(struct isl_basic_set *bset)
4647 return (struct isl_set *)
4648 isl_basic_map_compute_divs((struct isl_basic_map *)bset);
4651 struct isl_set *isl_set_compute_divs(struct isl_set *set)
4653 return (struct isl_set *)
4654 isl_map_compute_divs((struct isl_map *)set);
4657 struct isl_set *isl_map_domain(struct isl_map *map)
4660 struct isl_set *set;
4665 map = isl_map_cow(map);
4669 set = (struct isl_set *)map;
4670 set->dim = isl_dim_domain(set->dim);
4673 for (i = 0; i < map->n; ++i) {
4674 set->p[i] = isl_basic_map_domain(map->p[i]);
4678 ISL_F_CLR(set, ISL_MAP_DISJOINT);
4679 ISL_F_CLR(set, ISL_SET_NORMALIZED);
4686 struct isl_map *isl_map_union_disjoint(
4687 struct isl_map *map1, struct isl_map *map2)
4691 struct isl_map *map = NULL;
4705 isl_assert(map1->ctx, isl_dim_equal(map1->dim, map2->dim), goto error);
4707 if (ISL_F_ISSET(map1, ISL_MAP_DISJOINT) &&
4708 ISL_F_ISSET(map2, ISL_MAP_DISJOINT))
4709 ISL_FL_SET(flags, ISL_MAP_DISJOINT);
4711 map = isl_map_alloc_dim(isl_dim_copy(map1->dim),
4712 map1->n + map2->n, flags);
4715 for (i = 0; i < map1->n; ++i) {
4716 map = isl_map_add_basic_map(map,
4717 isl_basic_map_copy(map1->p[i]));
4721 for (i = 0; i < map2->n; ++i) {
4722 map = isl_map_add_basic_map(map,
4723 isl_basic_map_copy(map2->p[i]));
4737 struct isl_map *isl_map_union(struct isl_map *map1, struct isl_map *map2)
4739 map1 = isl_map_union_disjoint(map1, map2);
4743 ISL_F_CLR(map1, ISL_MAP_DISJOINT);
4747 struct isl_set *isl_set_union_disjoint(
4748 struct isl_set *set1, struct isl_set *set2)
4750 return (struct isl_set *)
4751 isl_map_union_disjoint(
4752 (struct isl_map *)set1, (struct isl_map *)set2);
4755 struct isl_set *isl_set_union(struct isl_set *set1, struct isl_set *set2)
4757 return (struct isl_set *)
4758 isl_map_union((struct isl_map *)set1, (struct isl_map *)set2);
4761 struct isl_map *isl_map_intersect_range(
4762 struct isl_map *map, struct isl_set *set)
4765 struct isl_map *result;
4771 if (ISL_F_ISSET(map, ISL_MAP_DISJOINT) &&
4772 ISL_F_ISSET(set, ISL_MAP_DISJOINT))
4773 ISL_FL_SET(flags, ISL_MAP_DISJOINT);
4775 result = isl_map_alloc_dim(isl_dim_copy(map->dim),
4776 map->n * set->n, flags);
4779 for (i = 0; i < map->n; ++i)
4780 for (j = 0; j < set->n; ++j) {
4781 result = isl_map_add_basic_map(result,
4782 isl_basic_map_intersect_range(
4783 isl_basic_map_copy(map->p[i]),
4784 isl_basic_set_copy(set->p[j])));
4797 struct isl_map *isl_map_intersect_domain(
4798 struct isl_map *map, struct isl_set *set)
4800 return isl_map_reverse(
4801 isl_map_intersect_range(isl_map_reverse(map), set));
4804 struct isl_map *isl_map_apply_domain(
4805 struct isl_map *map1, struct isl_map *map2)
4809 map1 = isl_map_reverse(map1);
4810 map1 = isl_map_apply_range(map1, map2);
4811 return isl_map_reverse(map1);
4818 struct isl_map *isl_map_apply_range(
4819 struct isl_map *map1, struct isl_map *map2)
4821 struct isl_dim *dim_result;
4822 struct isl_map *result;
4828 dim_result = isl_dim_join(isl_dim_copy(map1->dim),
4829 isl_dim_copy(map2->dim));
4831 result = isl_map_alloc_dim(dim_result, map1->n * map2->n, 0);
4834 for (i = 0; i < map1->n; ++i)
4835 for (j = 0; j < map2->n; ++j) {
4836 result = isl_map_add_basic_map(result,
4837 isl_basic_map_apply_range(
4838 isl_basic_map_copy(map1->p[i]),
4839 isl_basic_map_copy(map2->p[j])));
4845 if (result && result->n <= 1)
4846 ISL_F_SET(result, ISL_MAP_DISJOINT);
4855 * returns range - domain
4857 struct isl_basic_set *isl_basic_map_deltas(struct isl_basic_map *bmap)
4860 struct isl_basic_set *bset;
4867 dim = isl_basic_map_n_in(bmap);
4868 nparam = isl_basic_map_n_param(bmap);
4869 isl_assert(bmap->ctx, dim == isl_basic_map_n_out(bmap), goto error);
4870 bset = isl_basic_set_from_basic_map(bmap);
4871 bset = isl_basic_set_cow(bset);
4872 dims = isl_basic_set_get_dim(bset);
4873 dims = isl_dim_add(dims, isl_dim_set, dim);
4874 bset = isl_basic_set_extend_dim(bset, dims, 0, dim, 0);
4875 bset = isl_basic_set_swap_vars(bset, 2*dim);
4876 for (i = 0; i < dim; ++i) {
4877 int j = isl_basic_map_alloc_equality(
4878 (struct isl_basic_map *)bset);
4881 isl_seq_clr(bset->eq[j], 1 + isl_basic_set_total_dim(bset));
4882 isl_int_set_si(bset->eq[j][1+nparam+i], 1);
4883 isl_int_set_si(bset->eq[j][1+nparam+dim+i], 1);
4884 isl_int_set_si(bset->eq[j][1+nparam+2*dim+i], -1);
4886 return isl_basic_set_project_out(bset, isl_dim_set, dim, 2*dim);
4888 isl_basic_map_free(bmap);
4893 * returns range - domain
4895 struct isl_set *isl_map_deltas(struct isl_map *map)
4899 struct isl_set *result;
4904 isl_assert(map->ctx, isl_map_n_in(map) == isl_map_n_out(map), goto error);
4905 dim = isl_map_get_dim(map);
4906 dim = isl_dim_domain(dim);
4907 result = isl_set_alloc_dim(dim, map->n, map->flags);
4910 for (i = 0; i < map->n; ++i)
4911 result = isl_set_add_basic_set(result,
4912 isl_basic_map_deltas(isl_basic_map_copy(map->p[i])));
4920 static struct isl_basic_map *basic_map_identity(struct isl_dim *dims)
4922 struct isl_basic_map *bmap;
4930 nparam = dims->nparam;
4932 bmap = isl_basic_map_alloc_dim(dims, 0, dim, 0);
4936 for (i = 0; i < dim; ++i) {
4937 int j = isl_basic_map_alloc_equality(bmap);
4940 isl_seq_clr(bmap->eq[j], 1 + isl_basic_map_total_dim(bmap));
4941 isl_int_set_si(bmap->eq[j][1+nparam+i], 1);
4942 isl_int_set_si(bmap->eq[j][1+nparam+dim+i], -1);
4944 return isl_basic_map_finalize(bmap);
4946 isl_basic_map_free(bmap);
4950 struct isl_basic_map *isl_basic_map_identity(struct isl_dim *set_dim)
4952 struct isl_dim *dim = isl_dim_map(set_dim);
4955 return basic_map_identity(dim);
4958 struct isl_basic_map *isl_basic_map_identity_like(struct isl_basic_map *model)
4960 if (!model || !model->dim)
4962 isl_assert(model->ctx,
4963 model->dim->n_in == model->dim->n_out, return NULL);
4964 return basic_map_identity(isl_dim_copy(model->dim));
4967 static struct isl_map *map_identity(struct isl_dim *dim)
4969 struct isl_map *map = isl_map_alloc_dim(dim, 1, ISL_MAP_DISJOINT);
4970 return isl_map_add_basic_map(map, basic_map_identity(isl_dim_copy(dim)));
4973 struct isl_map *isl_map_identity(struct isl_dim *set_dim)
4975 struct isl_dim *dim = isl_dim_map(set_dim);
4978 return map_identity(dim);
4981 struct isl_map *isl_map_identity_like(struct isl_map *model)
4983 if (!model || !model->dim)
4985 isl_assert(model->ctx,
4986 model->dim->n_in == model->dim->n_out, return NULL);
4987 return map_identity(isl_dim_copy(model->dim));
4990 struct isl_map *isl_map_identity_like_basic_map(struct isl_basic_map *model)
4992 if (!model || !model->dim)
4994 isl_assert(model->ctx,
4995 model->dim->n_in == model->dim->n_out, return NULL);
4996 return map_identity(isl_dim_copy(model->dim));
4999 /* Construct a basic set with all set dimensions having only non-negative
5002 struct isl_basic_set *isl_basic_set_positive_orthant(struct isl_dim *dims)
5007 struct isl_basic_set *bset;
5011 nparam = dims->nparam;
5013 bset = isl_basic_set_alloc_dim(dims, 0, 0, dim);
5016 for (i = 0; i < dim; ++i) {
5017 int k = isl_basic_set_alloc_inequality(bset);
5020 isl_seq_clr(bset->ineq[k], 1 + isl_basic_set_total_dim(bset));
5021 isl_int_set_si(bset->ineq[k][1 + nparam + i], 1);
5025 isl_basic_set_free(bset);
5029 __isl_give isl_set *isl_set_split_dims(__isl_take isl_set *set,
5030 enum isl_dim_type type, unsigned first, unsigned n)
5033 isl_basic_set *nonneg = NULL;
5034 isl_basic_set *neg = NULL;
5041 isl_assert(set->ctx, first + n <= isl_set_dim(set, type), goto error);
5043 for (i = 0; i < n; ++i) {
5047 nonneg = isl_basic_set_alloc_dim(isl_set_get_dim(set), 0, 0, 1);
5048 k = isl_basic_set_alloc_inequality(nonneg);
5051 isl_seq_clr(nonneg->ineq[k], 1 + isl_basic_set_total_dim(nonneg));
5052 isl_int_set_si(nonneg->ineq[k][pos(set->dim, type) + first + i], 1);
5054 neg = isl_basic_set_alloc_dim(isl_set_get_dim(set), 0, 0, 1);
5055 k = isl_basic_set_alloc_inequality(neg);
5058 isl_seq_clr(neg->ineq[k], 1 + isl_basic_set_total_dim(neg));
5059 isl_int_set_si(neg->ineq[k][0], -1);
5060 isl_int_set_si(neg->ineq[k][pos(set->dim, type) + first + i], -1);
5062 set = isl_set_intersect(set, isl_basic_set_union(nonneg, neg));
5067 isl_basic_set_free(nonneg);
5068 isl_basic_set_free(neg);
5073 int isl_set_is_equal(struct isl_set *set1, struct isl_set *set2)
5075 return isl_map_is_equal((struct isl_map *)set1, (struct isl_map *)set2);
5078 int isl_basic_map_is_subset(
5079 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
5082 struct isl_map *map1;
5083 struct isl_map *map2;
5085 if (!bmap1 || !bmap2)
5088 map1 = isl_map_from_basic_map(isl_basic_map_copy(bmap1));
5089 map2 = isl_map_from_basic_map(isl_basic_map_copy(bmap2));
5091 is_subset = isl_map_is_subset(map1, map2);
5099 int isl_basic_map_is_equal(
5100 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
5104 if (!bmap1 || !bmap2)
5106 is_subset = isl_basic_map_is_subset(bmap1, bmap2);
5109 is_subset = isl_basic_map_is_subset(bmap2, bmap1);
5113 int isl_basic_set_is_equal(
5114 struct isl_basic_set *bset1, struct isl_basic_set *bset2)
5116 return isl_basic_map_is_equal(
5117 (struct isl_basic_map *)bset1, (struct isl_basic_map *)bset2);
5120 int isl_map_is_empty(struct isl_map *map)
5127 for (i = 0; i < map->n; ++i) {
5128 is_empty = isl_basic_map_is_empty(map->p[i]);
5137 int isl_map_fast_is_empty(struct isl_map *map)
5142 int isl_set_fast_is_empty(struct isl_set *set)
5147 int isl_set_is_empty(struct isl_set *set)
5149 return isl_map_is_empty((struct isl_map *)set);
5152 int isl_map_is_equal(struct isl_map *map1, struct isl_map *map2)
5158 is_subset = isl_map_is_subset(map1, map2);
5161 is_subset = isl_map_is_subset(map2, map1);
5165 int isl_basic_map_is_strict_subset(
5166 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
5170 if (!bmap1 || !bmap2)
5172 is_subset = isl_basic_map_is_subset(bmap1, bmap2);
5175 is_subset = isl_basic_map_is_subset(bmap2, bmap1);
5176 if (is_subset == -1)
5181 int isl_map_is_strict_subset(struct isl_map *map1, struct isl_map *map2)
5187 is_subset = isl_map_is_subset(map1, map2);
5190 is_subset = isl_map_is_subset(map2, map1);
5191 if (is_subset == -1)
5196 int isl_set_is_strict_subset(__isl_keep isl_set *set1, __isl_keep isl_set *set2)
5198 return isl_map_is_strict_subset((isl_map *)set1, (isl_map *)set2);
5201 int isl_basic_map_is_universe(struct isl_basic_map *bmap)
5205 return bmap->n_eq == 0 && bmap->n_ineq == 0;
5208 int isl_basic_set_is_universe(struct isl_basic_set *bset)
5212 return bset->n_eq == 0 && bset->n_ineq == 0;
5215 int isl_map_fast_is_universe(__isl_keep isl_map *map)
5220 return map->n == 1 && isl_basic_map_is_universe(map->p[0]);
5223 int isl_set_fast_is_universe(__isl_keep isl_set *set)
5225 return isl_map_fast_is_universe((isl_map *) set);
5228 int isl_basic_map_is_empty(struct isl_basic_map *bmap)
5230 struct isl_basic_set *bset = NULL;
5231 struct isl_vec *sample = NULL;
5238 if (ISL_F_ISSET(bmap, ISL_BASIC_MAP_EMPTY))
5241 if (ISL_F_ISSET(bmap, ISL_BASIC_MAP_RATIONAL)) {
5242 struct isl_basic_map *copy = isl_basic_map_copy(bmap);
5243 copy = isl_basic_map_convex_hull(copy);
5244 empty = ISL_F_ISSET(copy, ISL_BASIC_MAP_EMPTY);
5245 isl_basic_map_free(copy);
5249 total = 1 + isl_basic_map_total_dim(bmap);
5250 if (bmap->sample && bmap->sample->size == total) {
5251 int contains = isl_basic_map_contains(bmap, bmap->sample);
5257 isl_vec_free(bmap->sample);
5258 bmap->sample = NULL;
5259 bset = isl_basic_map_underlying_set(isl_basic_map_copy(bmap));
5262 sample = isl_basic_set_sample_vec(bset);
5265 empty = sample->size == 0;
5266 isl_vec_free(bmap->sample);
5267 bmap->sample = sample;
5269 ISL_F_SET(bmap, ISL_BASIC_MAP_EMPTY);
5274 int isl_basic_map_fast_is_empty(struct isl_basic_map *bmap)
5278 return ISL_F_ISSET(bmap, ISL_BASIC_MAP_EMPTY);
5281 int isl_basic_set_fast_is_empty(struct isl_basic_set *bset)
5285 return ISL_F_ISSET(bset, ISL_BASIC_SET_EMPTY);
5288 int isl_basic_set_is_empty(struct isl_basic_set *bset)
5290 return isl_basic_map_is_empty((struct isl_basic_map *)bset);
5293 struct isl_map *isl_basic_map_union(
5294 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
5296 struct isl_map *map;
5297 if (!bmap1 || !bmap2)
5300 isl_assert(bmap1->ctx, isl_dim_equal(bmap1->dim, bmap2->dim), goto error);
5302 map = isl_map_alloc_dim(isl_dim_copy(bmap1->dim), 2, 0);
5305 map = isl_map_add_basic_map(map, bmap1);
5306 map = isl_map_add_basic_map(map, bmap2);
5309 isl_basic_map_free(bmap1);
5310 isl_basic_map_free(bmap2);
5314 struct isl_set *isl_basic_set_union(
5315 struct isl_basic_set *bset1, struct isl_basic_set *bset2)
5317 return (struct isl_set *)isl_basic_map_union(
5318 (struct isl_basic_map *)bset1,
5319 (struct isl_basic_map *)bset2);
5322 /* Order divs such that any div only depends on previous divs */
5323 struct isl_basic_map *isl_basic_map_order_divs(struct isl_basic_map *bmap)
5326 unsigned off = isl_dim_total(bmap->dim);
5328 for (i = 0; i < bmap->n_div; ++i) {
5330 if (isl_int_is_zero(bmap->div[i][0]))
5332 pos = isl_seq_first_non_zero(bmap->div[i]+1+1+off+i,
5336 isl_basic_map_swap_div(bmap, i, i + pos);
5342 struct isl_basic_set *isl_basic_set_order_divs(struct isl_basic_set *bset)
5344 return (struct isl_basic_set *)
5345 isl_basic_map_order_divs((struct isl_basic_map *)bset);
5348 __isl_give isl_map *isl_map_order_divs(__isl_take isl_map *map)
5355 for (i = 0; i < map->n; ++i) {
5356 map->p[i] = isl_basic_map_order_divs(map->p[i]);
5367 /* Look for a div in dst that corresponds to the div "div" in src.
5368 * The divs before "div" in src and dst are assumed to be the same.
5370 * Returns -1 if no corresponding div was found and the position
5371 * of the corresponding div in dst otherwise.
5373 static int find_div(struct isl_basic_map *dst,
5374 struct isl_basic_map *src, unsigned div)
5378 unsigned total = isl_dim_total(src->dim);
5380 isl_assert(dst->ctx, div <= dst->n_div, return -1);
5381 for (i = div; i < dst->n_div; ++i)
5382 if (isl_seq_eq(dst->div[i], src->div[div], 1+1+total+div) &&
5383 isl_seq_first_non_zero(dst->div[i]+1+1+total+div,
5384 dst->n_div - div) == -1)
5389 struct isl_basic_map *isl_basic_map_align_divs(
5390 struct isl_basic_map *dst, struct isl_basic_map *src)
5393 unsigned total = isl_dim_total(src->dim);
5398 if (src->n_div == 0)
5401 for (i = 0; i < src->n_div; ++i)
5402 isl_assert(src->ctx, !isl_int_is_zero(src->div[i][0]), goto error);
5404 src = isl_basic_map_order_divs(src);
5405 dst = isl_basic_map_cow(dst);
5406 dst = isl_basic_map_extend_dim(dst, isl_dim_copy(dst->dim),
5407 src->n_div, 0, 2 * src->n_div);
5410 for (i = 0; i < src->n_div; ++i) {
5411 int j = find_div(dst, src, i);
5413 j = isl_basic_map_alloc_div(dst);
5416 isl_seq_cpy(dst->div[j], src->div[i], 1+1+total+i);
5417 isl_seq_clr(dst->div[j]+1+1+total+i, dst->n_div - i);
5418 if (isl_basic_map_add_div_constraints(dst, j) < 0)
5422 isl_basic_map_swap_div(dst, i, j);
5426 isl_basic_map_free(dst);
5430 struct isl_basic_set *isl_basic_set_align_divs(
5431 struct isl_basic_set *dst, struct isl_basic_set *src)
5433 return (struct isl_basic_set *)isl_basic_map_align_divs(
5434 (struct isl_basic_map *)dst, (struct isl_basic_map *)src);
5437 struct isl_map *isl_map_align_divs(struct isl_map *map)
5445 map = isl_map_compute_divs(map);
5446 map = isl_map_cow(map);
5450 for (i = 1; i < map->n; ++i)
5451 map->p[0] = isl_basic_map_align_divs(map->p[0], map->p[i]);
5452 for (i = 1; i < map->n; ++i)
5453 map->p[i] = isl_basic_map_align_divs(map->p[i], map->p[0]);
5455 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
5459 struct isl_set *isl_set_align_divs(struct isl_set *set)
5461 return (struct isl_set *)isl_map_align_divs((struct isl_map *)set);
5464 struct isl_set *isl_set_apply(struct isl_set *set, struct isl_map *map)
5468 isl_assert(set->ctx, isl_map_compatible_domain(map, set), goto error);
5469 map = isl_map_intersect_domain(map, set);
5470 set = isl_map_range(map);
5478 /* There is no need to cow as removing empty parts doesn't change
5479 * the meaning of the set.
5481 struct isl_map *isl_map_remove_empty_parts(struct isl_map *map)
5488 for (i = map->n-1; i >= 0; --i) {
5489 if (!ISL_F_ISSET(map->p[i], ISL_BASIC_MAP_EMPTY))
5491 isl_basic_map_free(map->p[i]);
5492 if (i != map->n-1) {
5493 ISL_F_CLR(map, ISL_MAP_NORMALIZED);
5494 map->p[i] = map->p[map->n-1];
5502 struct isl_set *isl_set_remove_empty_parts(struct isl_set *set)
5504 return (struct isl_set *)
5505 isl_map_remove_empty_parts((struct isl_map *)set);
5508 struct isl_basic_map *isl_map_copy_basic_map(struct isl_map *map)
5510 struct isl_basic_map *bmap;
5511 if (!map || map->n == 0)
5513 bmap = map->p[map->n-1];
5514 isl_assert(map->ctx, ISL_F_ISSET(bmap, ISL_BASIC_SET_FINAL), return NULL);
5515 return isl_basic_map_copy(bmap);
5518 struct isl_basic_set *isl_set_copy_basic_set(struct isl_set *set)
5520 return (struct isl_basic_set *)
5521 isl_map_copy_basic_map((struct isl_map *)set);
5524 __isl_give isl_map *isl_map_drop_basic_map(__isl_take isl_map *map,
5525 __isl_keep isl_basic_map *bmap)
5531 for (i = map->n-1; i >= 0; --i) {
5532 if (map->p[i] != bmap)
5534 map = isl_map_cow(map);
5537 isl_basic_map_free(map->p[i]);
5538 if (i != map->n-1) {
5539 ISL_F_CLR(map, ISL_SET_NORMALIZED);
5540 map->p[i] = map->p[map->n-1];
5551 struct isl_set *isl_set_drop_basic_set(struct isl_set *set,
5552 struct isl_basic_set *bset)
5554 return (struct isl_set *)isl_map_drop_basic_map((struct isl_map *)set,
5555 (struct isl_basic_map *)bset);
5558 /* Given two basic sets bset1 and bset2, compute the maximal difference
5559 * between the values of dimension pos in bset1 and those in bset2
5560 * for any common value of the parameters and dimensions preceding pos.
5562 static enum isl_lp_result basic_set_maximal_difference_at(
5563 __isl_keep isl_basic_set *bset1, __isl_keep isl_basic_set *bset2,
5564 int pos, isl_int *opt)
5566 struct isl_dim *dims;
5567 struct isl_basic_map *bmap1 = NULL;
5568 struct isl_basic_map *bmap2 = NULL;
5569 struct isl_ctx *ctx;
5570 struct isl_vec *obj;
5573 unsigned dim1, dim2;
5574 enum isl_lp_result res;
5576 if (!bset1 || !bset2)
5577 return isl_lp_error;
5579 nparam = isl_basic_set_n_param(bset1);
5580 dim1 = isl_basic_set_n_dim(bset1);
5581 dim2 = isl_basic_set_n_dim(bset2);
5582 dims = isl_dim_alloc(bset1->ctx, nparam, pos, dim1 - pos);
5583 bmap1 = isl_basic_map_from_basic_set(isl_basic_set_copy(bset1), dims);
5584 dims = isl_dim_alloc(bset2->ctx, nparam, pos, dim2 - pos);
5585 bmap2 = isl_basic_map_from_basic_set(isl_basic_set_copy(bset2), dims);
5586 if (!bmap1 || !bmap2)
5588 bmap1 = isl_basic_map_cow(bmap1);
5589 bmap1 = isl_basic_map_extend(bmap1, nparam,
5590 pos, (dim1 - pos) + (dim2 - pos),
5591 bmap2->n_div, bmap2->n_eq, bmap2->n_ineq);
5592 bmap1 = add_constraints(bmap1, bmap2, 0, dim1 - pos);
5595 total = isl_basic_map_total_dim(bmap1);
5597 obj = isl_vec_alloc(ctx, 1 + total);
5598 isl_seq_clr(obj->block.data, 1 + total);
5599 isl_int_set_si(obj->block.data[1+nparam+pos], 1);
5600 isl_int_set_si(obj->block.data[1+nparam+pos+(dim1-pos)], -1);
5603 res = isl_basic_map_solve_lp(bmap1, 1, obj->block.data, ctx->one,
5605 isl_basic_map_free(bmap1);
5609 isl_basic_map_free(bmap1);
5610 isl_basic_map_free(bmap2);
5611 return isl_lp_error;
5614 /* Given two _disjoint_ basic sets bset1 and bset2, check whether
5615 * for any common value of the parameters and dimensions preceding pos
5616 * in both basic sets, the values of dimension pos in bset1 are
5617 * smaller or larger than those in bset2.
5620 * 1 if bset1 follows bset2
5621 * -1 if bset1 precedes bset2
5622 * 0 if bset1 and bset2 are incomparable
5623 * -2 if some error occurred.
5625 int isl_basic_set_compare_at(struct isl_basic_set *bset1,
5626 struct isl_basic_set *bset2, int pos)
5629 enum isl_lp_result res;
5634 res = basic_set_maximal_difference_at(bset1, bset2, pos, &opt);
5636 if (res == isl_lp_empty)
5638 else if ((res == isl_lp_ok && isl_int_is_pos(opt)) ||
5639 res == isl_lp_unbounded)
5641 else if (res == isl_lp_ok && isl_int_is_neg(opt))
5650 /* Given two basic sets bset1 and bset2, check whether
5651 * for any common value of the parameters and dimensions preceding pos
5652 * there is a value of dimension pos in bset1 that is larger
5653 * than a value of the same dimension in bset2.
5656 * 1 if there exists such a pair
5657 * 0 if there is no such pair, but there is a pair of equal values
5659 * -2 if some error occurred.
5661 int isl_basic_set_follows_at(__isl_keep isl_basic_set *bset1,
5662 __isl_keep isl_basic_set *bset2, int pos)
5665 enum isl_lp_result res;
5670 res = basic_set_maximal_difference_at(bset1, bset2, pos, &opt);
5672 if (res == isl_lp_empty)
5674 else if ((res == isl_lp_ok && isl_int_is_pos(opt)) ||
5675 res == isl_lp_unbounded)
5677 else if (res == isl_lp_ok && isl_int_is_neg(opt))
5679 else if (res == isl_lp_ok)
5688 /* Given two sets set1 and set2, check whether
5689 * for any common value of the parameters and dimensions preceding pos
5690 * there is a value of dimension pos in set1 that is larger
5691 * than a value of the same dimension in set2.
5694 * 1 if there exists such a pair
5695 * 0 if there is no such pair, but there is a pair of equal values
5697 * -2 if some error occurred.
5699 int isl_set_follows_at(__isl_keep isl_set *set1,
5700 __isl_keep isl_set *set2, int pos)
5708 for (i = 0; i < set1->n; ++i)
5709 for (j = 0; j < set2->n; ++j) {
5711 f = isl_basic_set_follows_at(set1->p[i], set2->p[j], pos);
5712 if (f == 1 || f == -2)
5721 static int isl_basic_map_fast_has_fixed_var(struct isl_basic_map *bmap,
5722 unsigned pos, isl_int *val)
5730 total = isl_basic_map_total_dim(bmap);
5731 for (i = 0, d = total-1; i < bmap->n_eq && d+1 > pos; ++i) {
5732 for (; d+1 > pos; --d)
5733 if (!isl_int_is_zero(bmap->eq[i][1+d]))
5737 if (isl_seq_first_non_zero(bmap->eq[i]+1, d) != -1)
5739 if (isl_seq_first_non_zero(bmap->eq[i]+1+d+1, total-d-1) != -1)
5741 if (!isl_int_is_one(bmap->eq[i][1+d]))
5744 isl_int_neg(*val, bmap->eq[i][0]);
5750 static int isl_map_fast_has_fixed_var(struct isl_map *map,
5751 unsigned pos, isl_int *val)
5763 return isl_basic_map_fast_has_fixed_var(map->p[0], pos, val);
5766 fixed = isl_basic_map_fast_has_fixed_var(map->p[0], pos, &v);
5767 for (i = 1; fixed == 1 && i < map->n; ++i) {
5768 fixed = isl_basic_map_fast_has_fixed_var(map->p[i], pos, &tmp);
5769 if (fixed == 1 && isl_int_ne(tmp, v))
5773 isl_int_set(*val, v);
5779 static int isl_basic_set_fast_has_fixed_var(struct isl_basic_set *bset,
5780 unsigned pos, isl_int *val)
5782 return isl_basic_map_fast_has_fixed_var((struct isl_basic_map *)bset,
5786 static int isl_set_fast_has_fixed_var(struct isl_set *set, unsigned pos,
5789 return isl_map_fast_has_fixed_var((struct isl_map *)set, pos, val);
5792 int isl_basic_map_fast_is_fixed(struct isl_basic_map *bmap,
5793 enum isl_dim_type type, unsigned pos, isl_int *val)
5795 if (pos >= isl_basic_map_dim(bmap, type))
5797 return isl_basic_map_fast_has_fixed_var(bmap,
5798 isl_basic_map_offset(bmap, type) - 1 + pos, val);
5801 int isl_map_fast_is_fixed(struct isl_map *map,
5802 enum isl_dim_type type, unsigned pos, isl_int *val)
5804 if (pos >= isl_map_dim(map, type))
5806 return isl_map_fast_has_fixed_var(map,
5807 map_offset(map, type) - 1 + pos, val);
5810 /* Check if dimension dim has fixed value and if so and if val is not NULL,
5811 * then return this fixed value in *val.
5813 int isl_basic_set_fast_dim_is_fixed(struct isl_basic_set *bset, unsigned dim,
5816 return isl_basic_set_fast_has_fixed_var(bset,
5817 isl_basic_set_n_param(bset) + dim, val);
5820 /* Check if dimension dim has fixed value and if so and if val is not NULL,
5821 * then return this fixed value in *val.
5823 int isl_set_fast_dim_is_fixed(struct isl_set *set, unsigned dim, isl_int *val)
5825 return isl_set_fast_has_fixed_var(set, isl_set_n_param(set) + dim, val);
5828 /* Check if input variable in has fixed value and if so and if val is not NULL,
5829 * then return this fixed value in *val.
5831 int isl_map_fast_input_is_fixed(struct isl_map *map, unsigned in, isl_int *val)
5833 return isl_map_fast_has_fixed_var(map, isl_map_n_param(map) + in, val);
5836 /* Check if dimension dim has an (obvious) fixed lower bound and if so
5837 * and if val is not NULL, then return this lower bound in *val.
5839 int isl_basic_set_fast_dim_has_fixed_lower_bound(struct isl_basic_set *bset,
5840 unsigned dim, isl_int *val)
5842 int i, i_eq = -1, i_ineq = -1;
5849 total = isl_basic_set_total_dim(bset);
5850 nparam = isl_basic_set_n_param(bset);
5851 for (i = 0; i < bset->n_eq; ++i) {
5852 if (isl_int_is_zero(bset->eq[i][1+nparam+dim]))
5858 for (i = 0; i < bset->n_ineq; ++i) {
5859 if (!isl_int_is_pos(bset->ineq[i][1+nparam+dim]))
5861 if (i_eq != -1 || i_ineq != -1)
5865 if (i_eq == -1 && i_ineq == -1)
5867 c = i_eq != -1 ? bset->eq[i_eq] : bset->ineq[i_ineq];
5868 /* The coefficient should always be one due to normalization. */
5869 if (!isl_int_is_one(c[1+nparam+dim]))
5871 if (isl_seq_first_non_zero(c+1, nparam+dim) != -1)
5873 if (isl_seq_first_non_zero(c+1+nparam+dim+1,
5874 total - nparam - dim - 1) != -1)
5877 isl_int_neg(*val, c[0]);
5881 int isl_set_fast_dim_has_fixed_lower_bound(struct isl_set *set,
5882 unsigned dim, isl_int *val)
5894 return isl_basic_set_fast_dim_has_fixed_lower_bound(set->p[0],
5898 fixed = isl_basic_set_fast_dim_has_fixed_lower_bound(set->p[0],
5900 for (i = 1; fixed == 1 && i < set->n; ++i) {
5901 fixed = isl_basic_set_fast_dim_has_fixed_lower_bound(set->p[i],
5903 if (fixed == 1 && isl_int_ne(tmp, v))
5907 isl_int_set(*val, v);
5918 static int qsort_constraint_cmp(const void *p1, const void *p2)
5920 const struct constraint *c1 = (const struct constraint *)p1;
5921 const struct constraint *c2 = (const struct constraint *)p2;
5922 unsigned size = isl_min(c1->size, c2->size);
5923 return isl_seq_cmp(c1->c, c2->c, size);
5926 static struct isl_basic_map *isl_basic_map_sort_constraints(
5927 struct isl_basic_map *bmap)
5930 struct constraint *c;
5935 total = isl_basic_map_total_dim(bmap);
5936 c = isl_alloc_array(bmap->ctx, struct constraint, bmap->n_ineq);
5939 for (i = 0; i < bmap->n_ineq; ++i) {
5941 c[i].c = bmap->ineq[i];
5943 qsort(c, bmap->n_ineq, sizeof(struct constraint), qsort_constraint_cmp);
5944 for (i = 0; i < bmap->n_ineq; ++i)
5945 bmap->ineq[i] = c[i].c;
5949 isl_basic_map_free(bmap);
5953 struct isl_basic_map *isl_basic_map_normalize(struct isl_basic_map *bmap)
5957 if (ISL_F_ISSET(bmap, ISL_BASIC_MAP_NORMALIZED))
5959 bmap = isl_basic_map_convex_hull(bmap);
5960 bmap = isl_basic_map_sort_constraints(bmap);
5961 ISL_F_SET(bmap, ISL_BASIC_MAP_NORMALIZED);
5965 struct isl_basic_set *isl_basic_set_normalize(struct isl_basic_set *bset)
5967 return (struct isl_basic_set *)isl_basic_map_normalize(
5968 (struct isl_basic_map *)bset);
5971 static int isl_basic_map_fast_cmp(const struct isl_basic_map *bmap1,
5972 const struct isl_basic_map *bmap2)
5979 if (isl_basic_map_n_param(bmap1) != isl_basic_map_n_param(bmap2))
5980 return isl_basic_map_n_param(bmap1) - isl_basic_map_n_param(bmap2);
5981 if (isl_basic_map_n_in(bmap1) != isl_basic_map_n_in(bmap2))
5982 return isl_basic_map_n_out(bmap1) - isl_basic_map_n_out(bmap2);
5983 if (isl_basic_map_n_out(bmap1) != isl_basic_map_n_out(bmap2))
5984 return isl_basic_map_n_out(bmap1) - isl_basic_map_n_out(bmap2);
5985 if (ISL_F_ISSET(bmap1, ISL_BASIC_MAP_EMPTY) &&
5986 ISL_F_ISSET(bmap2, ISL_BASIC_MAP_EMPTY))
5988 if (ISL_F_ISSET(bmap1, ISL_BASIC_MAP_EMPTY))
5990 if (ISL_F_ISSET(bmap2, ISL_BASIC_MAP_EMPTY))
5992 if (bmap1->n_eq != bmap2->n_eq)
5993 return bmap1->n_eq - bmap2->n_eq;
5994 if (bmap1->n_ineq != bmap2->n_ineq)
5995 return bmap1->n_ineq - bmap2->n_ineq;
5996 if (bmap1->n_div != bmap2->n_div)
5997 return bmap1->n_div - bmap2->n_div;
5998 total = isl_basic_map_total_dim(bmap1);
5999 for (i = 0; i < bmap1->n_eq; ++i) {
6000 cmp = isl_seq_cmp(bmap1->eq[i], bmap2->eq[i], 1+total);
6004 for (i = 0; i < bmap1->n_ineq; ++i) {
6005 cmp = isl_seq_cmp(bmap1->ineq[i], bmap2->ineq[i], 1+total);
6009 for (i = 0; i < bmap1->n_div; ++i) {
6010 cmp = isl_seq_cmp(bmap1->div[i], bmap2->div[i], 1+1+total);
6017 static int isl_basic_map_fast_is_equal(struct isl_basic_map *bmap1,
6018 struct isl_basic_map *bmap2)
6020 return isl_basic_map_fast_cmp(bmap1, bmap2) == 0;
6023 static int qsort_bmap_cmp(const void *p1, const void *p2)
6025 const struct isl_basic_map *bmap1 = *(const struct isl_basic_map **)p1;
6026 const struct isl_basic_map *bmap2 = *(const struct isl_basic_map **)p2;
6028 return isl_basic_map_fast_cmp(bmap1, bmap2);
6031 /* We normalize in place, but if anything goes wrong we need
6032 * to return NULL, so we need to make sure we don't change the
6033 * meaning of any possible other copies of map.
6035 struct isl_map *isl_map_normalize(struct isl_map *map)
6038 struct isl_basic_map *bmap;
6042 if (ISL_F_ISSET(map, ISL_MAP_NORMALIZED))
6044 for (i = 0; i < map->n; ++i) {
6045 bmap = isl_basic_map_normalize(isl_basic_map_copy(map->p[i]));
6048 isl_basic_map_free(map->p[i]);
6051 qsort(map->p, map->n, sizeof(struct isl_basic_map *), qsort_bmap_cmp);
6052 ISL_F_SET(map, ISL_MAP_NORMALIZED);
6053 map = isl_map_remove_empty_parts(map);
6056 for (i = map->n - 1; i >= 1; --i) {
6057 if (!isl_basic_map_fast_is_equal(map->p[i-1], map->p[i]))
6059 isl_basic_map_free(map->p[i-1]);
6060 for (j = i; j < map->n; ++j)
6061 map->p[j-1] = map->p[j];
6071 struct isl_set *isl_set_normalize(struct isl_set *set)
6073 return (struct isl_set *)isl_map_normalize((struct isl_map *)set);
6076 int isl_map_fast_is_equal(struct isl_map *map1, struct isl_map *map2)
6086 if (!isl_dim_equal(map1->dim, map2->dim))
6089 map1 = isl_map_copy(map1);
6090 map2 = isl_map_copy(map2);
6091 map1 = isl_map_normalize(map1);
6092 map2 = isl_map_normalize(map2);
6095 equal = map1->n == map2->n;
6096 for (i = 0; equal && i < map1->n; ++i) {
6097 equal = isl_basic_map_fast_is_equal(map1->p[i], map2->p[i]);
6110 int isl_set_fast_is_equal(struct isl_set *set1, struct isl_set *set2)
6112 return isl_map_fast_is_equal((struct isl_map *)set1,
6113 (struct isl_map *)set2);
6116 /* Return an interval that ranges from min to max (inclusive)
6118 struct isl_basic_set *isl_basic_set_interval(struct isl_ctx *ctx,
6119 isl_int min, isl_int max)
6122 struct isl_basic_set *bset = NULL;
6124 bset = isl_basic_set_alloc(ctx, 0, 1, 0, 0, 2);
6128 k = isl_basic_set_alloc_inequality(bset);
6131 isl_int_set_si(bset->ineq[k][1], 1);
6132 isl_int_neg(bset->ineq[k][0], min);
6134 k = isl_basic_set_alloc_inequality(bset);
6137 isl_int_set_si(bset->ineq[k][1], -1);
6138 isl_int_set(bset->ineq[k][0], max);
6142 isl_basic_set_free(bset);
6146 /* Return the Cartesian product of the basic sets in list (in the given order).
6148 struct isl_basic_set *isl_basic_set_product(struct isl_basic_set_list *list)
6156 struct isl_basic_set *product = NULL;
6160 isl_assert(list->ctx, list->n > 0, goto error);
6161 isl_assert(list->ctx, list->p[0], goto error);
6162 nparam = isl_basic_set_n_param(list->p[0]);
6163 dim = isl_basic_set_n_dim(list->p[0]);
6164 extra = list->p[0]->n_div;
6165 n_eq = list->p[0]->n_eq;
6166 n_ineq = list->p[0]->n_ineq;
6167 for (i = 1; i < list->n; ++i) {
6168 isl_assert(list->ctx, list->p[i], goto error);
6169 isl_assert(list->ctx,
6170 nparam == isl_basic_set_n_param(list->p[i]), goto error);
6171 dim += isl_basic_set_n_dim(list->p[i]);
6172 extra += list->p[i]->n_div;
6173 n_eq += list->p[i]->n_eq;
6174 n_ineq += list->p[i]->n_ineq;
6176 product = isl_basic_set_alloc(list->ctx, nparam, dim, extra,
6181 for (i = 0; i < list->n; ++i) {
6182 isl_basic_set_add_constraints(product,
6183 isl_basic_set_copy(list->p[i]), dim);
6184 dim += isl_basic_set_n_dim(list->p[i]);
6186 isl_basic_set_list_free(list);
6189 isl_basic_set_free(product);
6190 isl_basic_set_list_free(list);
6194 struct isl_basic_map *isl_basic_map_product(
6195 struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
6197 struct isl_dim *dim_result = NULL;
6198 struct isl_basic_map *bmap;
6199 unsigned in1, in2, out1, out2, nparam, total, pos;
6200 struct isl_dim_map *dim_map1, *dim_map2;
6202 if (!bmap1 || !bmap2)
6205 isl_assert(bmap1->ctx, isl_dim_match(bmap1->dim, isl_dim_param,
6206 bmap2->dim, isl_dim_param), goto error);
6207 dim_result = isl_dim_product(isl_dim_copy(bmap1->dim),
6208 isl_dim_copy(bmap2->dim));
6210 in1 = isl_basic_map_n_in(bmap1);
6211 in2 = isl_basic_map_n_in(bmap2);
6212 out1 = isl_basic_map_n_out(bmap1);
6213 out2 = isl_basic_map_n_out(bmap2);
6214 nparam = isl_basic_map_n_param(bmap1);
6216 total = nparam + in1 + in2 + out1 + out2 + bmap1->n_div + bmap2->n_div;
6217 dim_map1 = isl_dim_map_alloc(bmap1->ctx, total);
6218 dim_map2 = isl_dim_map_alloc(bmap1->ctx, total);
6219 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_param, pos = 0);
6220 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_param, pos = 0);
6221 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_in, pos += nparam);
6222 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_in, pos += in1);
6223 isl_dim_map_dim(dim_map1, bmap1->dim, isl_dim_out, pos += in2);
6224 isl_dim_map_dim(dim_map2, bmap2->dim, isl_dim_out, pos += out1);
6225 isl_dim_map_div(dim_map1, bmap1, pos += out2);
6226 isl_dim_map_div(dim_map2, bmap2, pos += bmap1->n_div);
6228 bmap = isl_basic_map_alloc_dim(dim_result,
6229 bmap1->n_div + bmap2->n_div,
6230 bmap1->n_eq + bmap2->n_eq,
6231 bmap1->n_ineq + bmap2->n_ineq);
6232 bmap = add_constraints_dim_map(bmap, bmap1, dim_map1);
6233 bmap = add_constraints_dim_map(bmap, bmap2, dim_map2);
6234 bmap = isl_basic_map_simplify(bmap);
6235 return isl_basic_map_finalize(bmap);
6237 isl_basic_map_free(bmap1);
6238 isl_basic_map_free(bmap2);
6242 /* Given two maps A -> B and C -> D, construct a map (A, C) -> (B, D)
6244 struct isl_map *isl_map_product(struct isl_map *map1, struct isl_map *map2)
6247 struct isl_map *result;
6253 isl_assert(map1->ctx, isl_dim_match(map1->dim, isl_dim_param,
6254 map2->dim, isl_dim_param), goto error);
6256 if (ISL_F_ISSET(map1, ISL_MAP_DISJOINT) &&
6257 ISL_F_ISSET(map2, ISL_MAP_DISJOINT))
6258 ISL_FL_SET(flags, ISL_MAP_DISJOINT);
6260 result = isl_map_alloc_dim(isl_dim_product(isl_dim_copy(map1->dim),
6261 isl_dim_copy(map2->dim)),
6262 map1->n * map2->n, flags);
6265 for (i = 0; i < map1->n; ++i)
6266 for (j = 0; j < map2->n; ++j) {
6267 struct isl_basic_map *part;
6268 part = isl_basic_map_product(
6269 isl_basic_map_copy(map1->p[i]),
6270 isl_basic_map_copy(map2->p[j]));
6271 if (isl_basic_map_is_empty(part))
6272 isl_basic_map_free(part);
6274 result = isl_map_add_basic_map(result, part);
6287 /* Given two set A and B, construct its Cartesian product A x B.
6289 struct isl_set *isl_set_product(struct isl_set *set1, struct isl_set *set2)
6291 return (struct isl_set *)isl_map_product((struct isl_map *)set1,
6292 (struct isl_map *)set2);
6295 uint32_t isl_basic_set_get_hash(struct isl_basic_set *bset)
6298 uint32_t hash = isl_hash_init();
6303 bset = isl_basic_set_copy(bset);
6304 bset = isl_basic_set_normalize(bset);
6307 total = isl_basic_set_total_dim(bset);
6308 isl_hash_byte(hash, bset->n_eq & 0xFF);
6309 for (i = 0; i < bset->n_eq; ++i) {
6311 c_hash = isl_seq_get_hash(bset->eq[i], 1 + total);
6312 isl_hash_hash(hash, c_hash);
6314 isl_hash_byte(hash, bset->n_ineq & 0xFF);
6315 for (i = 0; i < bset->n_ineq; ++i) {
6317 c_hash = isl_seq_get_hash(bset->ineq[i], 1 + total);
6318 isl_hash_hash(hash, c_hash);
6320 isl_hash_byte(hash, bset->n_div & 0xFF);
6321 for (i = 0; i < bset->n_div; ++i) {
6323 if (isl_int_is_zero(bset->div[i][0]))
6325 isl_hash_byte(hash, i & 0xFF);
6326 c_hash = isl_seq_get_hash(bset->div[i], 1 + 1 + total);
6327 isl_hash_hash(hash, c_hash);
6329 isl_basic_set_free(bset);
6333 uint32_t isl_set_get_hash(struct isl_set *set)
6340 set = isl_set_copy(set);
6341 set = isl_set_normalize(set);
6345 hash = isl_hash_init();
6346 for (i = 0; i < set->n; ++i) {
6348 bset_hash = isl_basic_set_get_hash(set->p[i]);
6349 isl_hash_hash(hash, bset_hash);
6357 /* Check if the value for dimension dim is completely determined
6358 * by the values of the other parameters and variables.
6359 * That is, check if dimension dim is involved in an equality.
6361 int isl_basic_set_dim_is_unique(struct isl_basic_set *bset, unsigned dim)
6368 nparam = isl_basic_set_n_param(bset);
6369 for (i = 0; i < bset->n_eq; ++i)
6370 if (!isl_int_is_zero(bset->eq[i][1 + nparam + dim]))
6375 /* Check if the value for dimension dim is completely determined
6376 * by the values of the other parameters and variables.
6377 * That is, check if dimension dim is involved in an equality
6378 * for each of the subsets.
6380 int isl_set_dim_is_unique(struct isl_set *set, unsigned dim)
6386 for (i = 0; i < set->n; ++i) {
6388 unique = isl_basic_set_dim_is_unique(set->p[i], dim);
6395 int isl_map_foreach_basic_map(__isl_keep isl_map *map,
6396 int (*fn)(__isl_take isl_basic_map *bmap, void *user), void *user)
6403 for (i = 0; i < map->n; ++i)
6404 if (fn(isl_basic_map_copy(map->p[i]), user) < 0)
6410 int isl_set_foreach_basic_set(__isl_keep isl_set *set,
6411 int (*fn)(__isl_take isl_basic_set *bset, void *user), void *user)
6418 for (i = 0; i < set->n; ++i)
6419 if (fn(isl_basic_set_copy(set->p[i]), user) < 0)
6425 __isl_give isl_basic_set *isl_basic_set_lift(__isl_take isl_basic_set *bset)
6427 struct isl_dim *dim;
6432 if (bset->n_div == 0)
6435 bset = isl_basic_set_cow(bset);
6439 dim = isl_basic_set_get_dim(bset);
6440 dim = isl_dim_add(dim, isl_dim_set, bset->n_div);
6443 isl_dim_free(bset->dim);
6447 bset = isl_basic_set_finalize(bset);
6451 isl_basic_set_free(bset);
6455 __isl_give isl_set *isl_set_lift(__isl_take isl_set *set)
6458 struct isl_dim *dim;
6461 set = isl_set_align_divs(set);
6465 if (set->n == 0 || set->p[0]->n_div == 0)
6468 set = isl_set_cow(set);
6472 n_div = set->p[0]->n_div;
6473 dim = isl_set_get_dim(set);
6474 dim = isl_dim_add(dim, isl_dim_set, n_div);
6477 isl_dim_free(set->dim);
6480 for (i = 0; i < set->n; ++i) {
6481 set->p[i] = isl_basic_set_lift(set->p[i]);
6492 __isl_give isl_map *isl_set_lifting(__isl_take isl_set *set)
6494 struct isl_dim *dim;
6495 struct isl_basic_map *bmap;
6502 set = isl_set_align_divs(set);
6507 dim = isl_set_get_dim(set);
6508 if (set->n == 0 || set->p[0]->n_div == 0) {
6510 return isl_map_identity(dim);
6513 n_div = set->p[0]->n_div;
6514 dim = isl_dim_map(dim);
6515 n_param = isl_dim_size(dim, isl_dim_param);
6516 n_set = isl_dim_size(dim, isl_dim_in);
6517 dim = isl_dim_extend(dim, n_param, n_set, n_set + n_div);
6518 bmap = isl_basic_map_alloc_dim(dim, 0, n_set, 2 * n_div);
6519 for (i = 0; i < n_set; ++i)
6520 bmap = var_equal(bmap, i);
6522 total = n_param + n_set + n_set + n_div;
6523 for (i = 0; i < n_div; ++i) {
6524 k = isl_basic_map_alloc_inequality(bmap);
6527 isl_seq_cpy(bmap->ineq[k], set->p[0]->div[i]+1, 1+n_param);
6528 isl_seq_clr(bmap->ineq[k]+1+n_param, n_set);
6529 isl_seq_cpy(bmap->ineq[k]+1+n_param+n_set,
6530 set->p[0]->div[i]+1+1+n_param, n_set + n_div);
6531 isl_int_neg(bmap->ineq[k][1+n_param+n_set+n_set+i],
6532 set->p[0]->div[i][0]);
6534 l = isl_basic_map_alloc_inequality(bmap);
6537 isl_seq_neg(bmap->ineq[l], bmap->ineq[k], 1 + total);
6538 isl_int_add(bmap->ineq[l][0], bmap->ineq[l][0],
6539 set->p[0]->div[i][0]);
6540 isl_int_sub_ui(bmap->ineq[l][0], bmap->ineq[l][0], 1);
6544 return isl_map_from_basic_map(bmap);
6547 isl_basic_map_free(bmap);
6551 int isl_basic_set_size(__isl_keep isl_basic_set *bset)
6559 dim = isl_basic_set_total_dim(bset);
6560 size += bset->n_eq * (1 + dim);
6561 size += bset->n_ineq * (1 + dim);
6562 size += bset->n_div * (2 + dim);
6567 int isl_set_size(__isl_keep isl_set *set)
6575 for (i = 0; i < set->n; ++i)
6576 size += isl_basic_set_size(set->p[i]);
6581 int isl_basic_map_dim_is_bounded(__isl_keep isl_basic_map *bmap,
6582 enum isl_dim_type type, unsigned pos)
6590 isl_assert(bmap->ctx, pos < isl_basic_map_dim(bmap, type), return -1);
6592 pos += isl_basic_map_offset(bmap, type);
6594 for (i = 0; i < bmap->n_eq; ++i)
6595 if (!isl_int_is_zero(bmap->eq[i][pos]))
6599 for (i = 0; i < bmap->n_ineq; ++i) {
6600 int sgn = isl_int_sgn(bmap->ineq[i][pos]);
6607 return lower && upper;
6610 int isl_map_dim_is_bounded(__isl_keep isl_map *map,
6611 enum isl_dim_type type, unsigned pos)
6618 for (i = 0; i < map->n; ++i) {
6620 bounded = isl_basic_map_dim_is_bounded(map->p[i], type, pos);
6621 if (bounded < 0 || !bounded)
6628 /* Return 1 if the specified dim is involved in both an upper bound
6629 * and a lower bound.
6631 int isl_set_dim_is_bounded(__isl_keep isl_set *set,
6632 enum isl_dim_type type, unsigned pos)
6634 return isl_map_dim_is_bounded((isl_map *)set, type, pos);
6637 /* For each of the "n" variables starting at "first", determine
6638 * the sign of the variable and put the results in the first "n"
6639 * elements of the array "signs".
6641 * 1 means that the variable is non-negative
6642 * -1 means that the variable is non-positive
6643 * 0 means the variable attains both positive and negative values.
6645 int isl_basic_set_vars_get_sign(__isl_keep isl_basic_set *bset,
6646 unsigned first, unsigned n, int *signs)
6648 isl_vec *bound = NULL;
6649 struct isl_tab *tab = NULL;
6650 struct isl_tab_undo *snap;
6653 if (!bset || !signs)
6656 bound = isl_vec_alloc(bset->ctx, 1 + isl_basic_set_total_dim(bset));
6657 tab = isl_tab_from_basic_set(bset);
6661 isl_seq_clr(bound->el, bound->size);
6662 isl_int_set_si(bound->el[0], -1);
6664 snap = isl_tab_snap(tab);
6665 for (i = 0; i < n; ++i) {
6668 isl_int_set_si(bound->el[1 + first + i], -1);
6669 if (isl_tab_add_ineq(tab, bound->el) < 0)
6672 isl_int_set_si(bound->el[1 + first + i], 0);
6673 if (isl_tab_rollback(tab, snap) < 0)
6681 isl_int_set_si(bound->el[1 + first + i], 1);
6682 if (isl_tab_add_ineq(tab, bound->el) < 0)
6685 isl_int_set_si(bound->el[1 + first + i], 0);
6686 if (isl_tab_rollback(tab, snap) < 0)
6689 signs[i] = empty ? -1 : 0;
6693 isl_vec_free(bound);
6697 isl_vec_free(bound);
6701 int isl_basic_set_dims_get_sign(__isl_keep isl_basic_set *bset,
6702 enum isl_dim_type type, unsigned first, unsigned n, int *signs)
6704 if (!bset || !signs)
6706 isl_assert(bset->ctx, first + n <= isl_basic_set_dim(bset, type),
6709 first += pos(bset->dim, type) - 1;
6710 return isl_basic_set_vars_get_sign(bset, first, n, signs);
6713 /* Check if the given map is single-valued.
6718 * and check if the result is a subset of the identity mapping.
6720 int isl_map_is_single_valued(__isl_keep isl_map *map)
6726 test = isl_map_reverse(isl_map_copy(map));
6727 test = isl_map_apply_range(test, isl_map_copy(map));
6729 id = isl_map_identity(isl_dim_range(isl_map_get_dim(map)));
6731 sv = isl_map_is_subset(test, id);