unsigned isl_basic_set_total_dim(const struct isl_basic_set *bset)
{
+ if (!bset)
+ return 0;
return isl_space_dim(bset->dim, isl_dim_all) + bset->n_div;
}
return isl_space_copy(bset->dim);
}
-__isl_give isl_local_space *isl_basic_map_get_local_space(
- __isl_keep isl_basic_map *bmap)
+/* Extract the divs in "bmap" as a matrix.
+ */
+__isl_give isl_mat *isl_basic_map_get_divs(__isl_keep isl_basic_map *bmap)
{
int i;
- isl_local_space *ls;
+ isl_ctx *ctx;
+ isl_mat *div;
unsigned total;
+ unsigned cols;
if (!bmap)
return NULL;
- total = isl_basic_map_total_dim(bmap);
- ls = isl_local_space_alloc(isl_space_copy(bmap->dim), bmap->n_div);
- if (!ls)
+ ctx = isl_basic_map_get_ctx(bmap);
+ total = isl_space_dim(bmap->dim, isl_dim_all);
+ cols = 1 + 1 + total + bmap->n_div;
+ div = isl_mat_alloc(ctx, bmap->n_div, cols);
+ if (!div)
return NULL;
for (i = 0; i < bmap->n_div; ++i)
- isl_seq_cpy(ls->div->row[i], bmap->div[i], 2 + total);
+ isl_seq_cpy(div->row[i], bmap->div[i], cols);
+
+ return div;
+}
+
+__isl_give isl_local_space *isl_basic_map_get_local_space(
+ __isl_keep isl_basic_map *bmap)
+{
+ isl_mat *div;
- return ls;
+ if (!bmap)
+ return NULL;
+
+ div = isl_basic_map_get_divs(bmap);
+ return isl_local_space_alloc_div(isl_space_copy(bmap->dim), div);
}
__isl_give isl_local_space *isl_basic_set_get_local_space(
return isl_map_get_tuple_id(set, isl_dim_set);
}
+/* Does the set tuple have a name?
+ */
+int isl_set_has_tuple_name(__isl_keep isl_set *set)
+{
+ return set ? isl_space_has_tuple_name(set->dim, isl_dim_set) : -1;
+}
+
+
const char *isl_basic_set_get_tuple_name(__isl_keep isl_basic_set *bset)
{
return bset ? isl_space_get_tuple_name(bset->dim, isl_dim_set) : NULL;
bmap->dim = isl_space_set_dim_name(bmap->dim, type, pos, s);
if (!bmap->dim)
goto error;
- return bmap;
+ return isl_basic_map_finalize(bmap);
error:
isl_basic_map_free(bmap);
return NULL;
return bmap ? isl_space_has_dim_id(bmap->dim, type, pos) : -1;
}
+__isl_give isl_id *isl_basic_set_get_dim_id(__isl_keep isl_basic_set *bset,
+ enum isl_dim_type type, unsigned pos)
+{
+ return bset ? isl_space_get_dim_id(bset->dim, type, pos) : NULL;
+}
+
int isl_map_has_dim_id(__isl_keep isl_map *map,
enum isl_dim_type type, unsigned pos)
{
}
/* Eliminate the specified n dimensions starting at first from the
- * constraints using Fourier-Motzkin. The dimensions themselves
- * are not removed.
+ * constraints, without removing the dimensions from the space.
+ * If the set is rational, the dimensions are eliminated using Fourier-Motzkin.
*/
__isl_give isl_map *isl_map_eliminate(__isl_take isl_map *map,
enum isl_dim_type type, unsigned first, unsigned n)
if (n == 0)
return map;
+ if (first + n > isl_map_dim(map, type) || first + n < first)
+ isl_die(map->ctx, isl_error_invalid,
+ "index out of bounds", goto error);
+
map = isl_map_cow(map);
if (!map)
return NULL;
}
/* Eliminate the specified n dimensions starting at first from the
- * constraints using Fourier-Motzkin. The dimensions themselves
- * are not removed.
+ * constraints, without removing the dimensions from the space.
+ * If the set is rational, the dimensions are eliminated using Fourier-Motzkin.
*/
__isl_give isl_set *isl_set_eliminate(__isl_take isl_set *set,
enum isl_dim_type type, unsigned first, unsigned n)
}
/* Eliminate the specified n dimensions starting at first from the
- * constraints using Fourier-Motzkin. The dimensions themselves
- * are not removed.
+ * constraints, without removing the dimensions from the space.
+ * If the set is rational, the dimensions are eliminated using Fourier-Motzkin.
*/
__isl_give isl_set *isl_set_eliminate_dims(__isl_take isl_set *set,
unsigned first, unsigned n)
bmap->n_div, bmap->n_eq, bmap->n_ineq);
if (isl_basic_map_is_rational(bmap))
res = isl_basic_map_set_rational(res);
+ if (isl_basic_map_plain_is_empty(bmap)) {
+ isl_basic_map_free(bmap);
+ return isl_basic_map_set_to_empty(res);
+ }
res = isl_basic_map_add_constraints_dim_map(res, bmap, dim_map);
return isl_basic_map_finalize(res);
}
/*
* returns range - domain
*/
-struct isl_set *isl_map_deltas(struct isl_map *map)
+__isl_give isl_set *isl_map_deltas(__isl_take isl_map *map)
{
int i;
isl_space *dim;
{
struct isl_map *map;
if (!bmap1 || !bmap2)
- return NULL;
+ goto error;
isl_assert(bmap1->ctx, isl_space_is_equal(bmap1->dim, bmap2->dim), goto error);
return 1;
}
+/* Check if the given basic map is single-valued.
+ * We simply compute
+ *
+ * M \circ M^-1
+ *
+ * and check if the result is a subset of the identity mapping.
+ */
+int isl_basic_map_is_single_valued(__isl_keep isl_basic_map *bmap)
+{
+ isl_space *space;
+ isl_basic_map *test;
+ isl_basic_map *id;
+ int sv;
+
+ sv = isl_basic_map_plain_is_single_valued(bmap);
+ if (sv < 0 || sv)
+ return sv;
+
+ test = isl_basic_map_reverse(isl_basic_map_copy(bmap));
+ test = isl_basic_map_apply_range(test, isl_basic_map_copy(bmap));
+
+ space = isl_basic_map_get_space(bmap);
+ space = isl_space_map_from_set(isl_space_range(space));
+ id = isl_basic_map_identity(space);
+
+ sv = isl_basic_map_is_subset(test, id);
+
+ isl_basic_map_free(test);
+ isl_basic_map_free(id);
+
+ return sv;
+}
+
/* Check if the given map is obviously single-valued.
*/
int isl_map_plain_is_single_valued(__isl_keep isl_map *map)
isl_space_dim(bmap->dim->nested[0], isl_dim_in);
n1 = isl_space_dim(bmap->dim->nested[0], isl_dim_out);
n2 = isl_space_dim(bmap->dim->nested[1], isl_dim_in);
+ bmap = isl_basic_map_cow(bmap);
bmap = isl_basic_map_swap_vars(bmap, pos, n1, n2);
if (!bmap)
return NULL;
return NULL;
}
+/* Can we apply isl_basic_map_curry to "bmap"?
+ * That is, does it have a nested relation in its domain?
+ */
+int isl_basic_map_can_curry(__isl_keep isl_basic_map *bmap)
+{
+ if (!bmap)
+ return -1;
+
+ return isl_space_can_curry(bmap->dim);
+}
+
+/* Can we apply isl_map_curry to "map"?
+ * That is, does it have a nested relation in its domain?
+ */
+int isl_map_can_curry(__isl_keep isl_map *map)
+{
+ if (!map)
+ return -1;
+
+ return isl_space_can_curry(map->dim);
+}
+
+/* Given a basic map (A -> B) -> C, return the corresponding basic map
+ * A -> (B -> C).
+ */
+__isl_give isl_basic_map *isl_basic_map_curry(__isl_take isl_basic_map *bmap)
+{
+
+ if (!bmap)
+ return NULL;
+
+ if (!isl_basic_map_can_curry(bmap))
+ isl_die(bmap->ctx, isl_error_invalid,
+ "basic map cannot be curried", goto error);
+ bmap->dim = isl_space_curry(bmap->dim);
+ if (!bmap->dim)
+ goto error;
+ return bmap;
+error:
+ isl_basic_map_free(bmap);
+ return NULL;
+}
+
+/* Given a map (A -> B) -> C, return the corresponding map
+ * A -> (B -> C).
+ */
+__isl_give isl_map *isl_map_curry(__isl_take isl_map *map)
+{
+ int i;
+
+ if (!map)
+ return NULL;
+
+ if (!isl_map_can_curry(map))
+ isl_die(map->ctx, isl_error_invalid, "map cannot be curried",
+ goto error);
+
+ map = isl_map_cow(map);
+ if (!map)
+ return NULL;
+
+ for (i = 0; i < map->n; ++i) {
+ map->p[i] = isl_basic_map_curry(map->p[i]);
+ if (!map->p[i])
+ goto error;
+ }
+
+ map->dim = isl_space_curry(map->dim);
+ if (!map->dim)
+ goto error;
+
+ return map;
+error:
+ isl_map_free(map);
+ return NULL;
+}
+
/* Construct a basic map mapping the domain of the affine expression
* to a one-dimensional range prescribed by the affine expression.
*/
return NULL;
}
+/* Construct a map mapping the domain of the affine expression
+ * to a one-dimensional range prescribed by the affine expression.
+ */
+__isl_give isl_map *isl_map_from_aff(__isl_take isl_aff *aff)
+{
+ isl_basic_map *bmap;
+
+ bmap = isl_basic_map_from_aff(aff);
+ return isl_map_from_basic_map(bmap);
+}
+
/* Construct a basic map mapping the domain the multi-affine expression
* to its range, with each dimension in the range equated to the
* corresponding affine expression.
return bmap;
}
+/* Construct a map mapping the domain the multi-affine expression
+ * to its range, with each dimension in the range equated to the
+ * corresponding affine expression.
+ */
+__isl_give isl_map *isl_map_from_multi_aff(__isl_take isl_multi_aff *maff)
+{
+ isl_basic_map *bmap;
+
+ bmap = isl_basic_map_from_multi_aff(maff);
+ return isl_map_from_basic_map(bmap);
+}
+
/* Construct a basic map mapping a domain in the given space to
* to an n-dimensional range, with n the number of elements in the list,
* where each coordinate in the range is prescribed by the
return isl_map_equate(set, type1, pos1, type2, pos2);
}
+/* Construct a basic map where the given dimensions are equal to each other.
+ */
+static __isl_give isl_basic_map *equator(__isl_take isl_space *space,
+ enum isl_dim_type type1, int pos1, enum isl_dim_type type2, int pos2)
+{
+ isl_basic_map *bmap = NULL;
+ int i;
+
+ if (!space)
+ return NULL;
+
+ if (pos1 >= isl_space_dim(space, type1))
+ isl_die(isl_space_get_ctx(space), isl_error_invalid,
+ "index out of bounds", goto error);
+ if (pos2 >= isl_space_dim(space, type2))
+ isl_die(isl_space_get_ctx(space), isl_error_invalid,
+ "index out of bounds", goto error);
+
+ if (type1 == type2 && pos1 == pos2)
+ return isl_basic_map_universe(space);
+
+ bmap = isl_basic_map_alloc_space(isl_space_copy(space), 0, 1, 0);
+ i = isl_basic_map_alloc_equality(bmap);
+ if (i < 0)
+ goto error;
+ isl_seq_clr(bmap->eq[i], 1 + isl_basic_map_total_dim(bmap));
+ pos1 += isl_basic_map_offset(bmap, type1);
+ pos2 += isl_basic_map_offset(bmap, type2);
+ isl_int_set_si(bmap->eq[i][pos1], -1);
+ isl_int_set_si(bmap->eq[i][pos2], 1);
+ bmap = isl_basic_map_finalize(bmap);
+ isl_space_free(space);
+ return bmap;
+error:
+ isl_space_free(space);
+ isl_basic_map_free(bmap);
+ return NULL;
+}
+
+/* Add a constraint imposing that the given two dimensions are equal.
+ */
+__isl_give isl_basic_map *isl_basic_map_equate(__isl_take isl_basic_map *bmap,
+ enum isl_dim_type type1, int pos1, enum isl_dim_type type2, int pos2)
+{
+ isl_basic_map *eq;
+
+ eq = equator(isl_basic_map_get_space(bmap), type1, pos1, type2, pos2);
+
+ bmap = isl_basic_map_intersect(bmap, eq);
+
+ return bmap;
+}
+
/* Add a constraint imposing that the given two dimensions are equal.
*/
__isl_give isl_map *isl_map_equate(__isl_take isl_map *map,
enum isl_dim_type type1, int pos1, enum isl_dim_type type2, int pos2)
{
+ isl_basic_map *bmap;
+
+ bmap = equator(isl_map_get_space(map), type1, pos1, type2, pos2);
+
+ map = isl_map_intersect(map, isl_map_from_basic_map(bmap));
+
+ return map;
+}
+
+/* Add a constraint imposing that the given two dimensions have opposite values.
+ */
+__isl_give isl_map *isl_map_oppose(__isl_take isl_map *map,
+ enum isl_dim_type type1, int pos1, enum isl_dim_type type2, int pos2)
+{
isl_basic_map *bmap = NULL;
int i;
isl_seq_clr(bmap->eq[i], 1 + isl_basic_map_total_dim(bmap));
pos1 += isl_basic_map_offset(bmap, type1);
pos2 += isl_basic_map_offset(bmap, type2);
- isl_int_set_si(bmap->eq[i][pos1], -1);
+ isl_int_set_si(bmap->eq[i][pos1], 1);
isl_int_set_si(bmap->eq[i][pos2], 1);
bmap = isl_basic_map_finalize(bmap);
return NULL;
}
-/* Add a constraint imposing that the given two dimensions have opposite values.
+/* Add a constraint imposing that the value of the first dimension is
+ * greater than that of the second.
*/
-__isl_give isl_map *isl_map_oppose(__isl_take isl_map *map,
+__isl_give isl_map *isl_map_order_gt(__isl_take isl_map *map,
enum isl_dim_type type1, int pos1, enum isl_dim_type type2, int pos2)
{
isl_basic_map *bmap = NULL;
isl_die(map->ctx, isl_error_invalid,
"index out of bounds", goto error);
- bmap = isl_basic_map_alloc_space(isl_map_get_space(map), 0, 1, 0);
- i = isl_basic_map_alloc_equality(bmap);
+ if (type1 == type2 && pos1 == pos2) {
+ isl_space *space = isl_map_get_space(map);
+ isl_map_free(map);
+ return isl_map_empty(space);
+ }
+
+ bmap = isl_basic_map_alloc_space(isl_map_get_space(map), 0, 0, 1);
+ i = isl_basic_map_alloc_inequality(bmap);
if (i < 0)
goto error;
- isl_seq_clr(bmap->eq[i], 1 + isl_basic_map_total_dim(bmap));
+ isl_seq_clr(bmap->ineq[i], 1 + isl_basic_map_total_dim(bmap));
pos1 += isl_basic_map_offset(bmap, type1);
pos2 += isl_basic_map_offset(bmap, type2);
- isl_int_set_si(bmap->eq[i][pos1], 1);
- isl_int_set_si(bmap->eq[i][pos2], 1);
+ isl_int_set_si(bmap->ineq[i][pos1], 1);
+ isl_int_set_si(bmap->ineq[i][pos2], -1);
+ isl_int_set_si(bmap->ineq[i][0], -1);
bmap = isl_basic_map_finalize(bmap);
map = isl_map_intersect(map, isl_map_from_basic_map(bmap));
return NULL;
}
+/* Add a constraint imposing that the value of the first dimension is
+ * smaller than that of the second.
+ */
+__isl_give isl_map *isl_map_order_lt(__isl_take isl_map *map,
+ enum isl_dim_type type1, int pos1, enum isl_dim_type type2, int pos2)
+{
+ return isl_map_order_gt(map, type2, pos2, type1, pos1);
+}
+
__isl_give isl_aff *isl_basic_map_get_div(__isl_keep isl_basic_map *bmap,
int pos)
{
projects / platform / upstream / isl.git / blobdiff