#include <string.h>
#include <strings.h>
-#include "isl_ctx.h"
-#include "isl_blk.h"
+#include <isl/ctx.h>
+#include <isl/blk.h>
#include "isl_dim_private.h"
#include "isl_equalities.h"
-#include "isl_list.h"
-#include "isl_lp.h"
-#include "isl_seq.h"
-#include "isl_set.h"
-#include "isl_map.h"
+#include <isl/list.h>
+#include <isl/lp.h>
+#include <isl/seq.h>
+#include <isl/set.h>
+#include <isl/map.h>
#include "isl_map_private.h"
#include "isl_map_piplib.h"
#include <isl_reordering.h>
#include "isl_sample.h"
#include "isl_tab.h"
-#include "isl_vec.h"
+#include <isl/vec.h>
#include <isl_mat_private.h>
/* Maps dst positions to src positions */
return isl_set_eliminate(set, isl_dim_set, first, n);
}
-/* Project out n dimensions starting at first using Fourier-Motzkin */
-struct isl_set *isl_set_remove_dims(struct isl_set *set,
- unsigned first, unsigned n)
-{
- set = isl_set_eliminate_dims(set, first, n);
- set = isl_set_drop_dims(set, first, n);
- return set;
-}
-
__isl_give isl_basic_map *isl_basic_map_remove_divs(
__isl_take isl_basic_map *bmap)
{
return NULL;
}
-struct isl_basic_map *isl_basic_map_remove(struct isl_basic_map *bmap,
+struct isl_basic_map *isl_basic_map_remove_dims(struct isl_basic_map *bmap,
enum isl_dim_type type, unsigned first, unsigned n)
{
if (!bmap)
return NULL;
}
-__isl_give isl_basic_set *isl_basic_set_remove(__isl_take isl_basic_set *bset,
+/* Return true if the definition of the given div (recursively) involves
+ * any of the given variables.
+ */
+static int div_involves_vars(__isl_keep isl_basic_map *bmap, int div,
+ unsigned first, unsigned n)
+{
+ int i;
+ unsigned div_offset = isl_basic_map_offset(bmap, isl_dim_div);
+
+ if (isl_int_is_zero(bmap->div[div][0]))
+ return 0;
+ if (isl_seq_first_non_zero(bmap->div[div] + 1 + first, n) >= 0)
+ return 1;
+
+ for (i = bmap->n_div - 1; i >= 0; --i) {
+ if (isl_int_is_zero(bmap->div[div][1 + div_offset + i]))
+ continue;
+ if (div_involves_vars(bmap, i, first, n))
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Remove all divs (recursively) involving any of the given dimensions
+ * in their definitions.
+ */
+__isl_give isl_basic_map *isl_basic_map_remove_divs_involving_dims(
+ __isl_take isl_basic_map *bmap,
+ enum isl_dim_type type, unsigned first, unsigned n)
+{
+ int i;
+
+ if (!bmap)
+ return NULL;
+ isl_assert(bmap->ctx, first + n <= isl_basic_map_dim(bmap, type),
+ goto error);
+ first += isl_basic_map_offset(bmap, type);
+
+ for (i = bmap->n_div - 1; i >= 0; --i) {
+ if (!div_involves_vars(bmap, i, first, n))
+ continue;
+ bmap = isl_basic_map_remove_dims(bmap, isl_dim_div, i, 1);
+ }
+
+ return bmap;
+error:
+ isl_basic_map_free(bmap);
+ return NULL;
+}
+
+__isl_give isl_map *isl_map_remove_divs_involving_dims(__isl_take isl_map *map,
+ enum isl_dim_type type, unsigned first, unsigned n)
+{
+ int i;
+
+ if (!map)
+ return NULL;
+ if (map->n == 0)
+ return map;
+
+ map = isl_map_cow(map);
+ if (!map)
+ return NULL;
+
+ for (i = 0; i < map->n; ++i) {
+ map->p[i] = isl_basic_map_remove_divs_involving_dims(map->p[i],
+ type, first, n);
+ if (!map->p[i])
+ goto error;
+ }
+ return map;
+error:
+ isl_map_free(map);
+ return NULL;
+}
+
+__isl_give isl_set *isl_set_remove_divs_involving_dims(__isl_take isl_set *set,
+ enum isl_dim_type type, unsigned first, unsigned n)
+{
+ return (isl_set *)isl_map_remove_divs_involving_dims((isl_map *)set,
+ type, first, n);
+}
+
+__isl_give isl_basic_set *isl_basic_set_remove_dims(
+ __isl_take isl_basic_set *bset,
enum isl_dim_type type, unsigned first, unsigned n)
{
return (isl_basic_set *)
- isl_basic_map_remove((isl_basic_map *)bset, type, first, n);
+ isl_basic_map_remove_dims((isl_basic_map *)bset, type, first, n);
}
-struct isl_map *isl_map_remove(struct isl_map *map,
+struct isl_map *isl_map_remove_dims(struct isl_map *map,
enum isl_dim_type type, unsigned first, unsigned n)
{
int i;
return NULL;
}
-__isl_give isl_set *isl_set_remove(__isl_take isl_set *bset,
+__isl_give isl_set *isl_set_remove_dims(__isl_take isl_set *bset,
enum isl_dim_type type, unsigned first, unsigned n)
{
- return (isl_set *)isl_map_remove((isl_map *)bset, type, first, n);
+ return (isl_set *)isl_map_remove_dims((isl_map *)bset, type, first, n);
}
/* Project out n inputs starting at first using Fourier-Motzkin */
struct isl_map *isl_map_remove_inputs(struct isl_map *map,
unsigned first, unsigned n)
{
- return isl_map_remove(map, isl_dim_in, first, n);
-}
-
-/* Project out n dimensions starting at first using Fourier-Motzkin */
-struct isl_basic_set *isl_basic_set_remove_dims(struct isl_basic_set *bset,
- unsigned first, unsigned n)
-{
- unsigned nparam = isl_basic_set_n_param(bset);
- bset = isl_basic_set_eliminate_vars(bset, nparam + first, n);
- bset = isl_basic_set_drop_dims(bset, first, n);
- return bset;
+ return isl_map_remove_dims(map, isl_dim_in, first, n);
}
static void dump_term(struct isl_basic_map *bmap,
return NULL;
if (ISL_F_ISSET(bmap, ISL_BASIC_MAP_RATIONAL))
- return isl_basic_map_remove(bmap, type, first, n);
+ return isl_basic_map_remove_dims(bmap, type, first, n);
isl_assert(bmap->ctx, first + n <= isl_basic_map_dim(bmap, type),
goto error);
if (!bmap)
goto error;
if (bmap->dim->nparam == 0 && bmap->dim->n_in == 0 &&
- bmap->n_div == 0 && !isl_dim_get_tuple_name(bmap->dim, isl_dim_out))
+ bmap->n_div == 0 &&
+ !isl_dim_is_named_or_nested(bmap->dim, isl_dim_in) &&
+ !isl_dim_is_named_or_nested(bmap->dim, isl_dim_out))
return (struct isl_basic_set *)bmap;
bmap = isl_basic_map_cow(bmap);
if (!bmap)
return NULL;
}
+/* Construct the half-space x_pos >= 0.
+ */
+static __isl_give isl_basic_set *nonneg_halfspace(__isl_take isl_dim *dim,
+ int pos)
+{
+ int k;
+ isl_basic_set *nonneg;
+
+ nonneg = isl_basic_set_alloc_dim(dim, 0, 0, 1);
+ k = isl_basic_set_alloc_inequality(nonneg);
+ if (k < 0)
+ goto error;
+ isl_seq_clr(nonneg->ineq[k], 1 + isl_basic_set_total_dim(nonneg));
+ isl_int_set_si(nonneg->ineq[k][pos], 1);
+
+ return isl_basic_set_finalize(nonneg);
+error:
+ isl_basic_set_free(nonneg);
+ return NULL;
+}
+
+/* Construct the half-space x_pos <= -1.
+ */
+static __isl_give isl_basic_set *neg_halfspace(__isl_take isl_dim *dim, int pos)
+{
+ int k;
+ isl_basic_set *neg;
+
+ neg = isl_basic_set_alloc_dim(dim, 0, 0, 1);
+ k = isl_basic_set_alloc_inequality(neg);
+ if (k < 0)
+ goto error;
+ isl_seq_clr(neg->ineq[k], 1 + isl_basic_set_total_dim(neg));
+ isl_int_set_si(neg->ineq[k][0], -1);
+ isl_int_set_si(neg->ineq[k][pos], -1);
+
+ return isl_basic_set_finalize(neg);
+error:
+ isl_basic_set_free(neg);
+ return NULL;
+}
+
__isl_give isl_set *isl_set_split_dims(__isl_take isl_set *set,
enum isl_dim_type type, unsigned first, unsigned n)
{
int i;
- isl_basic_set *nonneg = NULL;
- isl_basic_set *neg = NULL;
+ isl_basic_set *nonneg;
+ isl_basic_set *neg;
if (!set)
return NULL;
isl_assert(set->ctx, first + n <= isl_set_dim(set, type), goto error);
for (i = 0; i < n; ++i) {
- int k;
-
- neg = NULL;
- nonneg = isl_basic_set_alloc_dim(isl_set_get_dim(set), 0, 0, 1);
- k = isl_basic_set_alloc_inequality(nonneg);
- if (k < 0)
- goto error;
- isl_seq_clr(nonneg->ineq[k], 1 + isl_basic_set_total_dim(nonneg));
- isl_int_set_si(nonneg->ineq[k][pos(set->dim, type) + first + i], 1);
-
- neg = isl_basic_set_alloc_dim(isl_set_get_dim(set), 0, 0, 1);
- k = isl_basic_set_alloc_inequality(neg);
- if (k < 0)
- goto error;
- isl_seq_clr(neg->ineq[k], 1 + isl_basic_set_total_dim(neg));
- isl_int_set_si(neg->ineq[k][0], -1);
- isl_int_set_si(neg->ineq[k][pos(set->dim, type) + first + i], -1);
+ nonneg = nonneg_halfspace(isl_set_get_dim(set),
+ pos(set->dim, type) + first + i);
+ neg = neg_halfspace(isl_set_get_dim(set),
+ pos(set->dim, type) + first + i);
set = isl_set_intersect(set, isl_basic_set_union(nonneg, neg));
}
return set;
error:
- isl_basic_set_free(nonneg);
- isl_basic_set_free(neg);
isl_set_free(set);
return NULL;
}
+static int foreach_orthant(__isl_take isl_set *set, int *signs, int first,
+ int len, int (*fn)(__isl_take isl_set *orthant, int *signs, void *user),
+ void *user)
+{
+ isl_set *half;
+
+ if (!set)
+ return -1;
+ if (isl_set_fast_is_empty(set)) {
+ isl_set_free(set);
+ return 0;
+ }
+ if (first == len)
+ return fn(set, signs, user);
+
+ signs[first] = 1;
+ half = isl_set_from_basic_set(nonneg_halfspace(isl_set_get_dim(set),
+ 1 + first));
+ half = isl_set_intersect(half, isl_set_copy(set));
+ if (foreach_orthant(half, signs, first + 1, len, fn, user) < 0)
+ goto error;
+
+ signs[first] = -1;
+ half = isl_set_from_basic_set(neg_halfspace(isl_set_get_dim(set),
+ 1 + first));
+ half = isl_set_intersect(half, set);
+ return foreach_orthant(half, signs, first + 1, len, fn, user);
+error:
+ isl_set_free(set);
+ return -1;
+}
+
+/* Call "fn" on the intersections of "set" with each of the orthants
+ * (except for obviously empty intersections). The orthant is identified
+ * by the signs array, with each entry having value 1 or -1 according
+ * to the sign of the corresponding variable.
+ */
+int isl_set_foreach_orthant(__isl_keep isl_set *set,
+ int (*fn)(__isl_take isl_set *orthant, int *signs, void *user),
+ void *user)
+{
+ unsigned nparam;
+ unsigned nvar;
+ int *signs;
+ int r;
+
+ if (!set)
+ return -1;
+ if (isl_set_fast_is_empty(set))
+ return 0;
+
+ nparam = isl_set_dim(set, isl_dim_param);
+ nvar = isl_set_dim(set, isl_dim_set);
+
+ signs = isl_alloc_array(set->ctx, int, nparam + nvar);
+
+ r = foreach_orthant(isl_set_copy(set), signs, 0, nparam + nvar,
+ fn, user);
+
+ free(signs);
+
+ return r;
+}
+
int isl_set_is_equal(struct isl_set *set1, struct isl_set *set2)
{
return isl_map_is_equal((struct isl_map *)set1, (struct isl_map *)set2);
return (isl_set *)isl_map_flatten((isl_map *)set);
}
+__isl_give isl_map *isl_set_flatten_map(__isl_take isl_set *set)
+{
+ isl_dim *dim, *flat_dim;
+ isl_map *map;
+
+ dim = isl_set_get_dim(set);
+ flat_dim = isl_dim_flatten(isl_dim_copy(dim));
+ map = map_identity(isl_dim_join(isl_dim_reverse(dim), flat_dim));
+ map = isl_map_intersect_domain(map, set);
+
+ return map;
+}
+
/* Extend the given dim_map with mappings for the divs in bmap.
*/
static __isl_give struct isl_dim_map *extend_dim_map(
return NULL;
}
+__isl_give isl_mat *isl_basic_set_equalities_matrix(
+ __isl_keep isl_basic_set *bset, enum isl_dim_type c1,
+ enum isl_dim_type c2, enum isl_dim_type c3, enum isl_dim_type c4)
+{
+ return isl_basic_map_equalities_matrix((isl_basic_map *)bset,
+ c1, c2, c3, c4, isl_dim_in);
+}
+
+__isl_give isl_mat *isl_basic_set_inequalities_matrix(
+ __isl_keep isl_basic_set *bset, enum isl_dim_type c1,
+ enum isl_dim_type c2, enum isl_dim_type c3, enum isl_dim_type c4)
+{
+ return isl_basic_map_inequalities_matrix((isl_basic_map *)bset,
+ c1, c2, c3, c4, isl_dim_in);
+}
+
__isl_give isl_basic_set *isl_basic_set_from_constraint_matrices(
__isl_take isl_dim *dim,
__isl_take isl_mat *eq, __isl_take isl_mat *ineq, enum isl_dim_type c1,
projects / platform / upstream / isl.git / blobdiff