+/*
+ * Copyright 2008-2009 Katholieke Universiteit Leuven
+ *
+ * Use of this software is governed by the GNU LGPLv2.1 license
+ *
+ * Written by Sven Verdoolaege, K.U.Leuven, Departement
+ * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
+ */
+
#include <string.h>
#include <strings.h>
#include "isl_ctx.h"
unsigned isl_basic_map_dim(const struct isl_basic_map *bmap,
enum isl_dim_type type)
{
- struct isl_dim *dim = bmap->dim;
switch (type) {
case isl_dim_param:
case isl_dim_in:
return isl_basic_map_drop_inequality((struct isl_basic_map *)bset, pos);
}
+__isl_give isl_basic_map *isl_basic_map_add_eq(__isl_take isl_basic_map *bmap,
+ isl_int *eq)
+{
+ int k;
+
+ bmap = isl_basic_map_extend_constraints(bmap, 1, 0);
+ if (!bmap)
+ return NULL;
+ k = isl_basic_map_alloc_equality(bmap);
+ if (k < 0)
+ goto error;
+ isl_seq_cpy(bmap->eq[k], eq, 1 + isl_basic_map_total_dim(bmap));
+ return bmap;
+error:
+ isl_basic_map_free(bmap);
+ return NULL;
+}
+
+__isl_give isl_basic_set *isl_basic_set_add_eq(__isl_take isl_basic_set *bset,
+ isl_int *eq)
+{
+ return (isl_basic_set *)
+ isl_basic_map_add_eq((isl_basic_map *)bset, eq);
+}
+
+__isl_give isl_basic_map *isl_basic_map_add_ineq(__isl_take isl_basic_map *bmap,
+ isl_int *ineq)
+{
+ int k;
+
+ bmap = isl_basic_map_extend_constraints(bmap, 0, 1);
+ if (!bmap)
+ return NULL;
+ k = isl_basic_map_alloc_inequality(bmap);
+ if (k < 0)
+ goto error;
+ isl_seq_cpy(bmap->ineq[k], ineq, 1 + isl_basic_map_total_dim(bmap));
+ return bmap;
+error:
+ isl_basic_map_free(bmap);
+ return NULL;
+}
+
+__isl_give isl_basic_set *isl_basic_set_add_ineq(__isl_take isl_basic_set *bset,
+ isl_int *ineq)
+{
+ return (isl_basic_set *)
+ isl_basic_map_add_ineq((isl_basic_map *)bset, ineq);
+}
+
int isl_basic_map_alloc_div(struct isl_basic_map *bmap)
{
if (!bmap)
isl_blk_free(bset->ctx, blk);
ISL_F_CLR(bset, ISL_BASIC_SET_NORMALIZED);
- return bset;
-
+ return isl_basic_set_gauss(bset, NULL);
error:
isl_basic_set_free(bset);
return NULL;
isl_int_set_si(bmap->eq[i][0], 1);
isl_seq_clr(bmap->eq[i]+1, total);
ISL_F_SET(bmap, ISL_BASIC_MAP_EMPTY);
+ isl_vec_free(bmap->sample);
+ bmap->sample = NULL;
return isl_basic_map_finalize(bmap);
error:
isl_basic_map_free(bmap);
return NULL;
}
+__isl_give isl_basic_set *isl_basic_set_remove(__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);
+}
+
struct isl_map *isl_map_remove(struct isl_map *map,
enum isl_dim_type type, unsigned first, unsigned n)
{
int i;
- unsigned nparam;
if (n == 0)
return map;
return NULL;
}
+__isl_give isl_set *isl_set_remove(__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);
+}
+
/* 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)
isl_assert(dim->ctx, n >= 0, return NULL);
set = isl_alloc(dim->ctx, struct isl_set,
sizeof(struct isl_set) +
- n * sizeof(struct isl_basic_set *));
+ (n - 1) * sizeof(struct isl_basic_set *));
if (!set)
goto error;
return NULL;
}
-static int basic_map_contains(struct isl_basic_map *bmap, struct isl_vec *vec)
+int isl_basic_map_contains(struct isl_basic_map *bmap, struct isl_vec *vec)
{
int i;
unsigned total;
int isl_basic_set_contains(struct isl_basic_set *bset, struct isl_vec *vec)
{
- return basic_map_contains((struct isl_basic_map *)bset, vec);
+ return isl_basic_map_contains((struct isl_basic_map *)bset, vec);
}
struct isl_basic_map *isl_basic_map_intersect(
isl_dim_equal(bmap1->dim, bmap2->dim), goto error);
if (bmap1->sample &&
- basic_map_contains(bmap1, bmap1->sample) > 0 &&
- basic_map_contains(bmap2, bmap1->sample) > 0)
+ isl_basic_map_contains(bmap1, bmap1->sample) > 0 &&
+ isl_basic_map_contains(bmap2, bmap1->sample) > 0)
sample = isl_vec_copy(bmap1->sample);
else if (bmap2->sample &&
- basic_map_contains(bmap1, bmap2->sample) > 0 &&
- basic_map_contains(bmap2, bmap2->sample) > 0)
+ isl_basic_map_contains(bmap1, bmap2->sample) > 0 &&
+ isl_basic_map_contains(bmap2, bmap2->sample) > 0)
sample = isl_vec_copy(bmap2->sample);
bmap1 = isl_basic_map_cow(bmap1);
(struct isl_basic_map *)bset2);
}
+/* Special case of isl_map_intersect, where both map1 and map2
+ * are convex, without any divs and such that either map1 or map2
+ * contains a single constraint. This constraint is then simply
+ * added to the other map.
+ */
+static __isl_give isl_map *map_intersect_add_constraint(
+ __isl_take isl_map *map1, __isl_take isl_map *map2)
+{
+ struct isl_basic_map *bmap1;
+ struct isl_basic_map *bmap2;
+
+ isl_assert(map1->ctx, map1->n == 1, goto error);
+ isl_assert(map2->ctx, map1->n == 1, goto error);
+ isl_assert(map1->ctx, map1->p[0]->n_div == 0, goto error);
+ isl_assert(map2->ctx, map1->p[0]->n_div == 0, goto error);
+
+ if (map2->p[0]->n_eq + map2->p[0]->n_ineq != 1)
+ return isl_map_intersect(map2, map1);
+
+ isl_assert(map2->ctx,
+ map2->p[0]->n_eq + map2->p[0]->n_ineq == 1, goto error);
+
+ map1 = isl_map_cow(map1);
+ if (!map1)
+ goto error;
+ map1->p[0] = isl_basic_map_cow(map1->p[0]);
+ if (map2->p[0]->n_eq == 1)
+ map1->p[0] = isl_basic_map_add_eq(map1->p[0], map2->p[0]->eq[0]);
+ else
+ map1->p[0] = isl_basic_map_add_ineq(map1->p[0],
+ map2->p[0]->ineq[0]);
+
+ map1->p[0] = isl_basic_map_simplify(map1->p[0]);
+ map1->p[0] = isl_basic_map_finalize(map1->p[0]);
+ if (!map1->p[0])
+ goto error;
+
+ isl_map_free(map2);
+
+ return map1;
+error:
+ isl_map_free(map1);
+ isl_map_free(map2);
+ return NULL;
+}
+
struct isl_map *isl_map_intersect(struct isl_map *map1, struct isl_map *map2)
{
unsigned flags = 0;
if (!map1 || !map2)
goto error;
+ if (map1->n == 1 && map2->n == 1 &&
+ map1->p[0]->n_div == 0 && map2->p[0]->n_div == 0 &&
+ isl_dim_equal(map1->dim, map2->dim) &&
+ (map1->p[0]->n_eq + map1->p[0]->n_ineq == 1 ||
+ map2->p[0]->n_eq + map2->p[0]->n_ineq == 1))
+ return map_intersect_add_constraint(map1, map2);
isl_assert(map1->ctx, isl_dim_match(map1->dim, isl_dim_param,
map2->dim, isl_dim_param), goto error);
if (isl_dim_total(map1->dim) ==
/* Turn final n dimensions into existentially quantified variables.
*/
-struct isl_basic_set *isl_basic_set_project_out(
- struct isl_basic_set *bset, unsigned n, unsigned flags)
+struct isl_basic_set *isl_basic_set_project_out(struct isl_basic_set *bset,
+ enum isl_dim_type type, unsigned first, unsigned n)
{
int i;
size_t row_size;
if (!bset)
return NULL;
- isl_assert(bset->ctx, n <= isl_basic_set_n_dim(bset), goto error);
+ isl_assert(bset->ctx, type == isl_dim_set, goto error);
+ isl_assert(bset->ctx, first + n == isl_basic_set_n_dim(bset), goto error);
if (n == 0)
return bset;
+ if (ISL_F_ISSET(bset, ISL_BASIC_SET_RATIONAL))
+ return isl_basic_set_remove(bset, type, first, n);
+
bset = isl_basic_set_cow(bset);
row_size = 1 + isl_dim_total(bset->dim) + bset->extra;
return NULL;
}
+/* Turn final n dimensions into existentially quantified variables.
+ */
+__isl_give isl_set *isl_set_project_out(__isl_take isl_set *set,
+ enum isl_dim_type type, unsigned first, unsigned n)
+{
+ int i;
+
+ if (!set)
+ return NULL;
+
+ isl_assert(set->ctx, type == isl_dim_set, goto error);
+ isl_assert(set->ctx, first + n == isl_set_n_dim(set), goto error);
+
+ if (n == 0)
+ return set;
+
+ set = isl_set_cow(set);
+ if (!set)
+ goto error;
+ set->dim = isl_dim_drop_outputs(set->dim, first, n);
+ for (i = 0; i < set->n; ++i) {
+ set->p[i] = isl_basic_set_project_out(set->p[i], type, first, n);
+ if (!set->p[i])
+ goto error;
+ }
+
+ ISL_F_CLR(set, ISL_SET_NORMALIZED);
+ return set;
+error:
+ isl_set_free(set);
+ return NULL;
+}
+
static struct isl_basic_map *add_divs(struct isl_basic_map *bmap, unsigned n)
{
int i, j;
if (!bset || !bmap)
goto error;
- isl_assert(set->ctx, isl_basic_map_compatible_domain(bmap, bset),
+ isl_assert(bset->ctx, isl_basic_map_compatible_domain(bmap, bset),
goto error);
return (struct isl_basic_set *)
if (!bmap1 || !bmap2)
goto error;
- isl_assert(ctx,
+ isl_assert(bmap1->ctx,
isl_basic_map_n_in(bmap1) == isl_basic_map_n_in(bmap2), goto error);
- isl_assert(ctx,
+ isl_assert(bmap1->ctx,
isl_basic_map_n_param(bmap1) == isl_basic_map_n_param(bmap2),
goto error);
return NULL;
}
-static struct isl_basic_map *var_more(struct isl_basic_map *bmap, unsigned pos)
+/* Add a constraints to "bmap" expressing i_pos < o_pos
+ */
+static struct isl_basic_map *var_less(struct isl_basic_map *bmap, unsigned pos)
{
int i;
unsigned nparam;
return NULL;
}
-static struct isl_basic_map *var_less(struct isl_basic_map *bmap, unsigned pos)
+/* Add a constraints to "bmap" expressing i_pos > o_pos
+ */
+static struct isl_basic_map *var_more(struct isl_basic_map *bmap, unsigned pos)
{
int i;
unsigned nparam;
return isl_basic_map_finalize(bmap);
}
+/* Return a relation on pairs of sets of dimension "dim" expressing i_pos < o_pos
+ */
struct isl_basic_map *isl_basic_map_less_at(struct isl_dim *dim, unsigned pos)
{
int i;
return isl_basic_map_finalize(bmap);
}
+/* Return a relation on pairs of sets of dimension "dim" expressing i_pos > o_pos
+ */
struct isl_basic_map *isl_basic_map_more_at(struct isl_dim *dim, unsigned pos)
{
int i;
return isl_basic_map_finalize(bmap);
}
+static __isl_give isl_map *map_lex_lte(__isl_take isl_dim *dims, int equal)
+{
+ struct isl_map *map;
+ unsigned dim;
+ int i;
+
+ if (!dims)
+ return NULL;
+ dim = dims->n_out;
+ map = isl_map_alloc_dim(isl_dim_copy(dims), dim + equal, ISL_MAP_DISJOINT);
+
+ for (i = 0; i < dim; ++i)
+ map = isl_map_add(map,
+ isl_basic_map_less_at(isl_dim_copy(dims), i));
+ if (equal)
+ map = isl_map_add(map,
+ isl_basic_map_equal(isl_dim_copy(dims), dim));
+
+ isl_dim_free(dims);
+ return map;
+}
+
+__isl_give isl_map *isl_map_lex_lt(__isl_take isl_dim *set_dim)
+{
+ return map_lex_lte(isl_dim_map(set_dim), 0);
+}
+
+__isl_give isl_map *isl_map_lex_le(__isl_take isl_dim *set_dim)
+{
+ return map_lex_lte(isl_dim_map(set_dim), 1);
+}
+
+static __isl_give isl_map *map_lex_gte(__isl_take isl_dim *dims, int equal)
+{
+ struct isl_map *map;
+ unsigned dim;
+ int i;
+
+ if (!dims)
+ return NULL;
+ dim = dims->n_out;
+ map = isl_map_alloc_dim(isl_dim_copy(dims), dim + equal, ISL_MAP_DISJOINT);
+
+ for (i = 0; i < dim; ++i)
+ map = isl_map_add(map,
+ isl_basic_map_more_at(isl_dim_copy(dims), i));
+ if (equal)
+ map = isl_map_add(map,
+ isl_basic_map_equal(isl_dim_copy(dims), dim));
+
+ isl_dim_free(dims);
+ return map;
+}
+
+__isl_give isl_map *isl_map_lex_gt(__isl_take isl_dim *set_dim)
+{
+ return map_lex_gte(isl_dim_map(set_dim), 0);
+}
+
+__isl_give isl_map *isl_map_lex_ge(__isl_take isl_dim *set_dim)
+{
+ return map_lex_gte(isl_dim_map(set_dim), 1);
+}
+
struct isl_basic_map *isl_basic_map_from_basic_set(
struct isl_basic_set *bset, struct isl_dim *dim)
{
*
* f - m d >= n
*/
-static int add_div_constraints(struct isl_basic_map *bmap, unsigned div)
+int isl_basic_map_add_div_constraints(struct isl_basic_map *bmap, unsigned div)
{
int i, j;
unsigned total = isl_basic_map_total_dim(bmap);
return NULL;
}
+__isl_give isl_basic_set *isl_basic_set_underlying_set(
+ __isl_take isl_basic_set *bset)
+{
+ return isl_basic_map_underlying_set((isl_basic_map *)bset);
+}
+
struct isl_basic_map *isl_basic_map_overlying_set(
struct isl_basic_set *bset, struct isl_basic_map *like)
{
for (i = 0; i < like->n_div; ++i) {
if (isl_int_is_zero(bmap->div[i][0]))
continue;
- if (add_div_constraints(bmap, i) < 0)
+ if (isl_basic_map_add_div_constraints(bmap, i) < 0)
goto error;
}
}
struct isl_basic_set *isl_basic_map_domain(struct isl_basic_map *bmap)
{
struct isl_basic_set *domain;
+ unsigned n_in;
unsigned n_out;
if (!bmap)
return NULL;
+ n_in = isl_basic_map_n_in(bmap);
n_out = isl_basic_map_n_out(bmap);
domain = isl_basic_set_from_basic_map(bmap);
- return isl_basic_set_project_out(domain, n_out, 0);
+ return isl_basic_set_project_out(domain, isl_dim_set, n_in, n_out);
}
struct isl_basic_set *isl_basic_map_range(struct isl_basic_map *bmap)
isl_assert(dim->ctx, n >= 0, return NULL);
map = isl_alloc(dim->ctx, struct isl_map,
sizeof(struct isl_map) +
- n * sizeof(struct isl_basic_map *));
+ (n - 1) * sizeof(struct isl_basic_map *));
if (!map)
goto error;
return bset;
}
+__isl_give isl_basic_map *isl_basic_map_universe_like(
+ __isl_keep isl_basic_map *model)
+{
+ if (!model)
+ return NULL;
+ return isl_basic_map_alloc_dim(isl_dim_copy(model->dim), 0, 0, 0);
+}
+
struct isl_basic_set *isl_basic_set_universe_like(struct isl_basic_set *model)
{
if (!model)
return isl_basic_set_alloc_dim(isl_dim_copy(model->dim), 0, 0, 0);
}
+__isl_give isl_basic_set *isl_basic_set_universe_like_set(
+ __isl_keep isl_set *model)
+{
+ if (!model)
+ return NULL;
+ return isl_basic_set_alloc_dim(isl_dim_copy(model->dim), 0, 0, 0);
+}
+
struct isl_map *isl_map_empty(struct isl_dim *dim)
{
return isl_map_alloc_dim(dim, 0, ISL_MAP_DISJOINT);
return set;
}
+__isl_give isl_set *isl_set_universe_like(__isl_keep isl_set *model)
+{
+ if (!model)
+ return NULL;
+ return isl_set_universe(isl_dim_copy(model->dim));
+}
+
struct isl_map *isl_map_dup(struct isl_map *map)
{
int i;
nparam, 0, dim);
}
-static struct isl_basic_map *isl_basic_map_fix_pos(struct isl_basic_map *bmap,
- unsigned pos, int value)
+static struct isl_basic_map *isl_basic_map_fix_pos_si(
+ struct isl_basic_map *bmap, unsigned pos, int value)
{
int j;
return NULL;
}
+static __isl_give isl_basic_map *isl_basic_map_fix_pos(
+ __isl_take isl_basic_map *bmap, unsigned pos, isl_int value)
+{
+ int j;
+
+ bmap = isl_basic_map_cow(bmap);
+ bmap = isl_basic_map_extend_constraints(bmap, 1, 0);
+ j = isl_basic_map_alloc_equality(bmap);
+ if (j < 0)
+ goto error;
+ isl_seq_clr(bmap->eq[j] + 1, isl_basic_map_total_dim(bmap));
+ isl_int_set_si(bmap->eq[j][pos], -1);
+ isl_int_set(bmap->eq[j][0], value);
+ bmap = isl_basic_map_simplify(bmap);
+ return isl_basic_map_finalize(bmap);
+error:
+ isl_basic_map_free(bmap);
+ return NULL;
+}
+
struct isl_basic_map *isl_basic_map_fix_si(struct isl_basic_map *bmap,
enum isl_dim_type type, unsigned pos, int value)
{
if (!bmap)
return NULL;
isl_assert(bmap->ctx, pos < isl_basic_map_dim(bmap, type), goto error);
- return isl_basic_map_fix_pos(bmap, isl_basic_map_offset(bmap, type) + pos,
- value);
+ return isl_basic_map_fix_pos_si(bmap,
+ isl_basic_map_offset(bmap, type) + pos, value);
+error:
+ isl_basic_map_free(bmap);
+ return NULL;
+}
+
+__isl_give isl_basic_map *isl_basic_map_fix(__isl_take isl_basic_map *bmap,
+ enum isl_dim_type type, unsigned pos, isl_int value)
+{
+ if (!bmap)
+ return NULL;
+ isl_assert(bmap->ctx, pos < isl_basic_map_dim(bmap, type), goto error);
+ return isl_basic_map_fix_pos(bmap,
+ isl_basic_map_offset(bmap, type) + pos, value);
error:
isl_basic_map_free(bmap);
return NULL;
type, pos, value);
}
+__isl_give isl_basic_set *isl_basic_set_fix(__isl_take isl_basic_set *bset,
+ enum isl_dim_type type, unsigned pos, isl_int value)
+{
+ return (struct isl_basic_set *)
+ isl_basic_map_fix((struct isl_basic_map *)bset,
+ type, pos, value);
+}
+
struct isl_basic_map *isl_basic_map_fix_input_si(struct isl_basic_map *bmap,
unsigned input, int value)
{
if (!map)
return NULL;
- isl_assert(ctx, pos < isl_map_dim(map, type), goto error);
+ isl_assert(map->ctx, pos < isl_map_dim(map, type), goto error);
for (i = 0; i < map->n; ++i) {
map->p[i] = isl_basic_map_fix_si(map->p[i], type, pos, value);
if (!map->p[i])
return NULL;
}
+__isl_give isl_map *isl_map_fix(__isl_take isl_map *map,
+ enum isl_dim_type type, unsigned pos, isl_int value)
+{
+ int i;
+
+ map = isl_map_cow(map);
+ if (!map)
+ return NULL;
+
+ isl_assert(map->ctx, pos < isl_map_dim(map, type), goto error);
+ for (i = 0; i < map->n; ++i) {
+ map->p[i] = isl_basic_map_fix(map->p[i], type, pos, value);
+ if (!map->p[i])
+ goto error;
+ }
+ ISL_F_CLR(map, ISL_MAP_NORMALIZED);
+ return map;
+error:
+ isl_map_free(map);
+ return NULL;
+}
+
+__isl_give isl_set *isl_set_fix(__isl_take isl_set *set,
+ enum isl_dim_type type, unsigned pos, isl_int value)
+{
+ return (struct isl_set *)isl_map_fix((isl_map *)set, type, pos, value);
+}
+
struct isl_map *isl_map_fix_input_si(struct isl_map *map,
unsigned input, int value)
{
unsigned dim, isl_int value)
{
int j;
- unsigned nparam;
bset = isl_basic_set_cow(bset);
bset = isl_basic_set_extend_constraints(bset, 0, 1);
struct isl_map *isl_map_reverse(struct isl_map *map)
{
int i;
- unsigned t;
map = isl_map_cow(map);
if (!map)
{
if (!bmap)
goto error;
- if (bmap->ctx->pip == ISL_PIP_PIP)
+ if (bmap->ctx->opt->pip == ISL_PIP_PIP)
return isl_pip_basic_map_lexopt(bmap, dom, empty, max);
else
return isl_tab_basic_map_partial_lexopt(bmap, dom, empty, max);
dom, empty);
}
-struct isl_set *isl_basic_set_lexmin(struct isl_basic_set *bset)
+__isl_give isl_map *isl_basic_map_lexopt(__isl_take isl_basic_map *bmap, int max)
{
- struct isl_basic_map *bmap = NULL;
struct isl_basic_set *dom = NULL;
- struct isl_map *min;
- struct isl_dim *param_dim;
+ struct isl_dim *dom_dim;
- if (!bset)
- goto error;
- bmap = isl_basic_map_from_basic_set(bset, isl_dim_copy(bset->dim));
if (!bmap)
goto error;
- param_dim = isl_dim_domain(isl_dim_copy(bmap->dim));
- dom = isl_basic_set_universe(param_dim);
- if (!dom)
- goto error;
- min = isl_basic_map_partial_lexmin(bmap, dom, NULL);
- return isl_map_range(min);
+ dom_dim = isl_dim_domain(isl_dim_copy(bmap->dim));
+ dom = isl_basic_set_universe(dom_dim);
+ return isl_basic_map_partial_lexopt(bmap, dom, NULL, max);
error:
isl_basic_map_free(bmap);
return NULL;
}
+__isl_give isl_map *isl_basic_map_lexmin(__isl_take isl_basic_map *bmap)
+{
+ return isl_basic_map_lexopt(bmap, 0);
+}
+
+__isl_give isl_map *isl_basic_map_lexmax(__isl_take isl_basic_map *bmap)
+{
+ return isl_basic_map_lexopt(bmap, 1);
+}
+
+__isl_give isl_set *isl_basic_set_lexmin(__isl_take isl_basic_set *bset)
+{
+ return (isl_set *)isl_basic_map_lexmin((isl_basic_map *)bset);
+}
+
+__isl_give isl_set *isl_basic_set_lexmax(__isl_take isl_basic_set *bset)
+{
+ return (isl_set *)isl_basic_map_lexmax((isl_basic_map *)bset);
+}
+
static struct isl_map *isl_map_reset_dim(struct isl_map *map,
struct isl_dim *dim)
{
return NULL;
}
-/* If bmap contains any unknown divs, then compute explicit
- * expressions for them. However, this computation may be
- * quite expensive, so first try to remove divs that aren't
- * strictly needed.
- */
-struct isl_map *isl_basic_map_compute_divs(struct isl_basic_map *bmap)
+static int basic_map_divs_known(__isl_keep isl_basic_map *bmap)
{
int i;
unsigned off;
if (!bmap)
- return NULL;
+ return -1;
+
off = isl_dim_total(bmap->dim);
for (i = 0; i < bmap->n_div; ++i) {
if (isl_int_is_zero(bmap->div[i][0]))
- break;
+ return 0;
isl_assert(bmap->ctx, isl_int_is_zero(bmap->div[i][1+1+off+i]),
- goto error);
+ return -1);
}
- if (i == bmap->n_div)
- return isl_map_from_basic_map(bmap);
- bmap = isl_basic_map_drop_redundant_divs(bmap);
- if (!bmap)
+ return 1;
+}
+
+static int map_divs_known(__isl_keep isl_map *map)
+{
+ int i;
+
+ if (!map)
+ return -1;
+
+ for (i = 0; i < map->n; ++i) {
+ int known = basic_map_divs_known(map->p[i]);
+ if (known <= 0)
+ return known;
+ }
+
+ return 1;
+}
+
+/* If bmap contains any unknown divs, then compute explicit
+ * expressions for them. However, this computation may be
+ * quite expensive, so first try to remove divs that aren't
+ * strictly needed.
+ */
+struct isl_map *isl_basic_map_compute_divs(struct isl_basic_map *bmap)
+{
+ int i;
+ int known;
+ struct isl_map *map;
+
+ known = basic_map_divs_known(bmap);
+ if (known < 0)
goto error;
- for (i = 0; i < bmap->n_div; ++i)
- if (isl_int_is_zero(bmap->div[i][0]))
- break;
- if (i == bmap->n_div)
+ if (known)
+ return isl_map_from_basic_map(bmap);
+
+ bmap = isl_basic_map_drop_redundant_divs(bmap);
+
+ known = basic_map_divs_known(bmap);
+ if (known < 0)
+ goto error;
+ if (known)
return isl_map_from_basic_map(bmap);
- struct isl_map *map = compute_divs(bmap);
+
+ map = compute_divs(bmap);
return map;
error:
isl_basic_map_free(bmap);
struct isl_map *isl_map_compute_divs(struct isl_map *map)
{
int i;
+ int known;
struct isl_map *res;
if (!map)
return NULL;
if (map->n == 0)
return map;
+
+ known = map_divs_known(map);
+ if (known < 0) {
+ isl_map_free(map);
+ return NULL;
+ }
+ if (known)
+ return map;
+
res = isl_basic_map_compute_divs(isl_basic_map_copy(map->p[0]));
for (i = 1 ; i < map->n; ++i) {
struct isl_map *r2;
struct isl_dim *dim_result;
struct isl_map *result;
int i, j;
- unsigned nparam;
- unsigned n_in;
- unsigned n_out;
if (!map1 || !map2)
goto error;
isl_int_set_si(bset->eq[j][1+nparam+dim+i], 1);
isl_int_set_si(bset->eq[j][1+nparam+2*dim+i], -1);
}
- return isl_basic_set_project_out(bset, 2*dim, 0);
+ return isl_basic_set_project_out(bset, isl_dim_set, dim, 2*dim);
error:
isl_basic_map_free(bmap);
return NULL;
return isl_map_is_equal((struct isl_map *)set1, (struct isl_map *)set2);
}
-int isl_set_is_subset(struct isl_set *set1, struct isl_set *set2)
-{
- return isl_map_is_subset(
- (struct isl_map *)set1, (struct isl_map *)set2);
-}
-
int isl_basic_map_is_subset(
struct isl_basic_map *bmap1, struct isl_basic_map *bmap2)
{
return map->n == 0;
}
-int isl_set_is_empty(struct isl_set *set)
+int isl_set_fast_is_empty(struct isl_set *set)
{
- return isl_map_is_empty((struct isl_map *)set);
+ return set->n == 0;
}
-int isl_map_is_subset(struct isl_map *map1, struct isl_map *map2)
+int isl_set_is_empty(struct isl_set *set)
{
- int i;
- int is_subset = 0;
- struct isl_map *diff;
-
- if (!map1 || !map2)
- return -1;
-
- if (isl_map_is_empty(map1))
- return 1;
-
- if (isl_map_is_empty(map2))
- return 0;
-
- diff = isl_map_subtract(isl_map_copy(map1), isl_map_copy(map2));
- if (!diff)
- return -1;
-
- is_subset = isl_map_is_empty(diff);
- isl_map_free(diff);
-
- return is_subset;
+ return isl_map_is_empty((struct isl_map *)set);
}
int isl_map_is_equal(struct isl_map *map1, struct isl_map *map2)
return !is_subset;
}
+int isl_set_is_strict_subset(__isl_keep isl_set *set1, __isl_keep isl_set *set2)
+{
+ return isl_map_is_strict_subset((isl_map *)set1, (isl_map *)set2);
+}
+
int isl_basic_map_is_universe(struct isl_basic_map *bmap)
{
if (!bmap)
return bset->n_eq == 0 && bset->n_ineq == 0;
}
+int isl_map_fast_is_universe(__isl_keep isl_map *map)
+{
+ if (!map)
+ return -1;
+
+ return map->n == 1 && isl_basic_map_is_universe(map->p[0]);
+}
+
int isl_basic_map_is_empty(struct isl_basic_map *bmap)
{
struct isl_basic_set *bset = NULL;
total = 1 + isl_basic_map_total_dim(bmap);
if (bmap->sample && bmap->sample->size == total) {
- int contains = basic_map_contains(bmap, bmap->sample);
+ int contains = isl_basic_map_contains(bmap, bmap->sample);
if (contains < 0)
return -1;
if (contains)
bset = isl_basic_map_underlying_set(isl_basic_map_copy(bmap));
if (!bset)
return -1;
- sample = isl_basic_set_sample(bset);
+ sample = isl_basic_set_sample_vec(bset);
if (!sample)
return -1;
empty = sample->size == 0;
if (!bmap1 || !bmap2)
return NULL;
- isl_assert(map1->ctx, isl_dim_equal(bmap1->dim, bmap2->dim), goto error);
+ isl_assert(bmap1->ctx, isl_dim_equal(bmap1->dim, bmap2->dim), goto error);
map = isl_map_alloc_dim(isl_dim_copy(bmap1->dim), 2, 0);
if (!map)
goto error;
isl_seq_cpy(dst->div[j], src->div[i], 1+1+total+i);
isl_seq_clr(dst->div[j]+1+1+total+i, dst->n_div - i);
- if (add_div_constraints(dst, j) < 0)
+ if (isl_basic_map_add_div_constraints(dst, j) < 0)
goto error;
}
if (j != i)
{
int i;
+ if (!map)
+ return NULL;
+ if (map->n == 0)
+ return map;
map = isl_map_compute_divs(map);
map = isl_map_cow(map);
if (!map)
return (struct isl_set *)isl_map_align_divs((struct isl_map *)set);
}
-static struct isl_map *add_cut_constraint(struct isl_map *dst,
- struct isl_basic_map *src, isl_int *c,
- unsigned len, int oppose)
-{
- struct isl_basic_map *copy = NULL;
- int is_empty;
- int k;
- unsigned total;
-
- copy = isl_basic_map_copy(src);
- copy = isl_basic_map_cow(copy);
- if (!copy)
- goto error;
- copy = isl_basic_map_extend_constraints(copy, 0, 1);
- k = isl_basic_map_alloc_inequality(copy);
- if (k < 0)
- goto error;
- if (oppose)
- isl_seq_neg(copy->ineq[k], c, len);
- else
- isl_seq_cpy(copy->ineq[k], c, len);
- total = 1 + isl_basic_map_total_dim(copy);
- isl_seq_clr(copy->ineq[k]+len, total - len);
- isl_inequality_negate(copy, k);
- copy = isl_basic_map_simplify(copy);
- copy = isl_basic_map_finalize(copy);
- is_empty = isl_basic_map_is_empty(copy);
- if (is_empty < 0)
- goto error;
- if (!is_empty)
- dst = isl_map_add(dst, copy);
- else
- isl_basic_map_free(copy);
- return dst;
-error:
- isl_basic_map_free(copy);
- isl_map_free(dst);
- return NULL;
-}
-
-static struct isl_map *subtract(struct isl_map *map, struct isl_basic_map *bmap)
-{
- int i, j, k;
- unsigned flags = 0;
- struct isl_map *rest = NULL;
- unsigned max;
- unsigned total = isl_basic_map_total_dim(bmap);
-
- assert(bmap);
-
- if (!map)
- goto error;
-
- if (ISL_F_ISSET(map, ISL_MAP_DISJOINT))
- ISL_FL_SET(flags, ISL_MAP_DISJOINT);
-
- max = map->n * (2 * bmap->n_eq + bmap->n_ineq);
- rest = isl_map_alloc_dim(isl_dim_copy(map->dim), max, flags);
- if (!rest)
- goto error;
-
- for (i = 0; i < map->n; ++i) {
- map->p[i] = isl_basic_map_align_divs(map->p[i], bmap);
- if (!map->p[i])
- goto error;
- }
-
- for (j = 0; j < map->n; ++j)
- map->p[j] = isl_basic_map_cow(map->p[j]);
-
- for (i = 0; i < bmap->n_eq; ++i) {
- for (j = 0; j < map->n; ++j) {
- rest = add_cut_constraint(rest,
- map->p[j], bmap->eq[i], 1+total, 0);
- if (!rest)
- goto error;
-
- rest = add_cut_constraint(rest,
- map->p[j], bmap->eq[i], 1+total, 1);
- if (!rest)
- goto error;
-
- map->p[j] = isl_basic_map_extend_constraints(map->p[j],
- 1, 0);
- if (!map->p[j])
- goto error;
- k = isl_basic_map_alloc_equality(map->p[j]);
- if (k < 0)
- goto error;
- isl_seq_cpy(map->p[j]->eq[k], bmap->eq[i], 1+total);
- isl_seq_clr(map->p[j]->eq[k]+1+total,
- map->p[j]->n_div - bmap->n_div);
- }
- }
-
- for (i = 0; i < bmap->n_ineq; ++i) {
- for (j = 0; j < map->n; ++j) {
- rest = add_cut_constraint(rest,
- map->p[j], bmap->ineq[i], 1+total, 0);
- if (!rest)
- goto error;
-
- map->p[j] = isl_basic_map_extend_constraints(map->p[j],
- 0, 1);
- if (!map->p[j])
- goto error;
- k = isl_basic_map_alloc_inequality(map->p[j]);
- if (k < 0)
- goto error;
- isl_seq_cpy(map->p[j]->ineq[k], bmap->ineq[i], 1+total);
- isl_seq_clr(map->p[j]->ineq[k]+1+total,
- map->p[j]->n_div - bmap->n_div);
- }
- }
-
- isl_map_free(map);
- return rest;
-error:
- isl_map_free(map);
- isl_map_free(rest);
- return NULL;
-}
-
-struct isl_map *isl_map_subtract(struct isl_map *map1, struct isl_map *map2)
-{
- int i;
- if (!map1 || !map2)
- goto error;
-
- isl_assert(map1->ctx, isl_dim_equal(map1->dim, map2->dim), goto error);
-
- if (isl_map_is_empty(map2)) {
- isl_map_free(map2);
- return map1;
- }
-
- map1 = isl_map_compute_divs(map1);
- map2 = isl_map_compute_divs(map2);
- if (!map1 || !map2)
- goto error;
-
- for (i = 0; map1 && i < map2->n; ++i)
- map1 = subtract(map1, map2->p[i]);
-
- isl_map_free(map2);
- return map1;
-error:
- isl_map_free(map1);
- isl_map_free(map2);
- return NULL;
-}
-
-struct isl_set *isl_set_subtract(struct isl_set *set1, struct isl_set *set2)
-{
- return (struct isl_set *)
- isl_map_subtract(
- (struct isl_map *)set1, (struct isl_map *)set2);
-}
-
struct isl_set *isl_set_apply(struct isl_set *set, struct isl_map *map)
{
if (!set || !map)
struct isl_basic_set *isl_set_copy_basic_set(struct isl_set *set)
{
- (struct isl_basic_set *)isl_map_copy_basic_map((struct isl_map *)set);
+ return (struct isl_basic_set *)
+ isl_map_copy_basic_map((struct isl_map *)set);
}
-struct isl_map *isl_map_drop_basic_map(struct isl_map *map,
- struct isl_basic_map *bmap)
+__isl_give isl_map *isl_map_drop_basic_map(__isl_take isl_map *map,
+ __isl_keep isl_basic_map *bmap)
{
int i;
map->n--;
return map;
}
- isl_basic_map_free(bmap);
return map;
error:
isl_map_free(map);
- isl_basic_map_free(bmap);
return NULL;
}
struct isl_set *isl_set_drop_basic_set(struct isl_set *set,
struct isl_basic_set *bset)
{
- (struct isl_set *)isl_map_drop_basic_map((struct isl_map *)set,
+ return (struct isl_set *)isl_map_drop_basic_map((struct isl_map *)set,
(struct isl_basic_map *)bset);
}
-/* Given two _disjoint_ basic sets bset1 and bset2, check whether
- * for any common value of the parameters and dimensions preceding dim
- * in both basic sets, the values of dimension pos in bset1 are
- * smaller or larger than those in bset2.
- *
- * Returns
- * 1 if bset1 follows bset2
- * -1 if bset1 precedes bset2
- * 0 if bset1 and bset2 are incomparable
- * -2 if some error occurred.
+/* Given two basic sets bset1 and bset2, compute the maximal difference
+ * between the values of dimension pos in bset1 and those in bset2
+ * for any common value of the parameters and dimensions preceding pos.
*/
-int isl_basic_set_compare_at(struct isl_basic_set *bset1,
- struct isl_basic_set *bset2, int pos)
+static enum isl_lp_result basic_set_maximal_difference_at(
+ __isl_keep isl_basic_set *bset1, __isl_keep isl_basic_set *bset2,
+ int pos, isl_int *opt)
{
struct isl_dim *dims;
struct isl_basic_map *bmap1 = NULL;
unsigned total;
unsigned nparam;
unsigned dim1, dim2;
- isl_int num, den;
enum isl_lp_result res;
- int cmp;
if (!bset1 || !bset2)
- return -2;
+ return isl_lp_error;
nparam = isl_basic_set_n_param(bset1);
dim1 = isl_basic_set_n_dim(bset1);
isl_int_set_si(obj->block.data[1+nparam+pos+(dim1-pos)], -1);
if (!obj)
goto error;
- isl_int_init(num);
- isl_int_init(den);
- res = isl_basic_map_solve_lp(bmap1, 0, obj->block.data, ctx->one,
- &num, &den, NULL);
+ res = isl_basic_map_solve_lp(bmap1, 1, obj->block.data, ctx->one,
+ opt, NULL, NULL);
+ isl_basic_map_free(bmap1);
+ isl_vec_free(obj);
+ return res;
+error:
+ isl_basic_map_free(bmap1);
+ isl_basic_map_free(bmap2);
+ return isl_lp_error;
+}
+
+/* Given two _disjoint_ basic sets bset1 and bset2, check whether
+ * for any common value of the parameters and dimensions preceding pos
+ * in both basic sets, the values of dimension pos in bset1 are
+ * smaller or larger than those in bset2.
+ *
+ * Returns
+ * 1 if bset1 follows bset2
+ * -1 if bset1 precedes bset2
+ * 0 if bset1 and bset2 are incomparable
+ * -2 if some error occurred.
+ */
+int isl_basic_set_compare_at(struct isl_basic_set *bset1,
+ struct isl_basic_set *bset2, int pos)
+{
+ isl_int opt;
+ enum isl_lp_result res;
+ int cmp;
+
+ isl_int_init(opt);
+
+ res = basic_set_maximal_difference_at(bset1, bset2, pos, &opt);
+
if (res == isl_lp_empty)
cmp = 0;
- else if (res == isl_lp_ok && isl_int_is_pos(num))
+ else if ((res == isl_lp_ok && isl_int_is_pos(opt)) ||
+ res == isl_lp_unbounded)
cmp = 1;
- else if ((res == isl_lp_ok && isl_int_is_neg(num)) ||
+ else if (res == isl_lp_ok && isl_int_is_neg(opt))
+ cmp = -1;
+ else
+ cmp = -2;
+
+ isl_int_clear(opt);
+ return cmp;
+}
+
+/* Given two basic sets bset1 and bset2, check whether
+ * for any common value of the parameters and dimensions preceding pos
+ * there is a value of dimension pos in bset1 that is larger
+ * than a value of the same dimension in bset2.
+ *
+ * Return
+ * 1 if there exists such a pair
+ * 0 if there is no such pair, but there is a pair of equal values
+ * -1 otherwise
+ * -2 if some error occurred.
+ */
+int isl_basic_set_follows_at(__isl_keep isl_basic_set *bset1,
+ __isl_keep isl_basic_set *bset2, int pos)
+{
+ isl_int opt;
+ enum isl_lp_result res;
+ int cmp;
+
+ isl_int_init(opt);
+
+ res = basic_set_maximal_difference_at(bset1, bset2, pos, &opt);
+
+ if (res == isl_lp_empty)
+ cmp = -1;
+ else if ((res == isl_lp_ok && isl_int_is_pos(opt)) ||
res == isl_lp_unbounded)
+ cmp = 1;
+ else if (res == isl_lp_ok && isl_int_is_neg(opt))
cmp = -1;
+ else if (res == isl_lp_ok)
+ cmp = 0;
else
cmp = -2;
- isl_int_clear(num);
- isl_int_clear(den);
- isl_basic_map_free(bmap1);
- isl_vec_free(obj);
+
+ isl_int_clear(opt);
return cmp;
-error:
- isl_basic_map_free(bmap1);
- isl_basic_map_free(bmap2);
- return -2;
+}
+
+/* Given two sets set1 and set2, check whether
+ * for any common value of the parameters and dimensions preceding pos
+ * there is a value of dimension pos in set1 that is larger
+ * than a value of the same dimension in set2.
+ *
+ * Return
+ * 1 if there exists such a pair
+ * 0 if there is no such pair, but there is a pair of equal values
+ * -1 otherwise
+ * -2 if some error occurred.
+ */
+int isl_set_follows_at(__isl_keep isl_set *set1,
+ __isl_keep isl_set *set2, int pos)
+{
+ int i, j;
+ int follows = -1;
+
+ if (!set1 || !set2)
+ return -2;
+
+ for (i = 0; i < set1->n; ++i)
+ for (j = 0; j < set2->n; ++j) {
+ int f;
+ f = isl_basic_set_follows_at(set1->p[i], set2->p[j], pos);
+ if (f == 1 || f == -2)
+ return f;
+ if (f > follows)
+ follows = f;
+ }
+
+ return follows;
}
static int isl_basic_map_fast_has_fixed_var(struct isl_basic_map *bmap,
if (!bmap1 || !bmap2)
goto error;
- isl_assert(map1->ctx, isl_dim_match(bmap1->dim, isl_dim_param,
+ isl_assert(bmap1->ctx, isl_dim_match(bmap1->dim, isl_dim_param,
bmap2->dim, isl_dim_param), goto error);
dim_result = isl_dim_product(isl_dim_copy(bmap1->dim),
isl_dim_copy(bmap2->dim));
uint32_t isl_basic_set_get_hash(struct isl_basic_set *bset)
{
int i;
- uint32_t hash;
+ uint32_t hash = isl_hash_init();
unsigned total;
if (!bset)
}
return 1;
}
+
+int isl_map_foreach_basic_map(__isl_keep isl_map *map,
+ int (*fn)(__isl_take isl_basic_map *bmap, void *user), void *user)
+{
+ int i;
+
+ if (!map)
+ return -1;
+
+ for (i = 0; i < map->n; ++i)
+ if (fn(isl_basic_map_copy(map->p[i]), user) < 0)
+ return -1;
+
+ return 0;
+}
+
+int isl_set_foreach_basic_set(__isl_keep isl_set *set,
+ int (*fn)(__isl_take isl_basic_set *bset, void *user), void *user)
+{
+ int i;
+
+ if (!set)
+ return -1;
+
+ for (i = 0; i < set->n; ++i)
+ if (fn(isl_basic_set_copy(set->p[i]), user) < 0)
+ return -1;
+
+ return 0;
+}
+
+__isl_give isl_map *isl_set_lifting(__isl_take isl_set *set)
+{
+ struct isl_dim *dim;
+ struct isl_basic_map *bmap;
+ unsigned n_set;
+ unsigned n_div;
+ unsigned n_param;
+ unsigned total;
+ int i, k, l;
+
+ set = isl_set_align_divs(set);
+
+ if (!set)
+ return NULL;
+
+ dim = isl_set_get_dim(set);
+ if (set->n == 0 || set->p[0]->n_div == 0) {
+ isl_set_free(set);
+ return isl_map_identity(dim);
+ }
+
+ n_div = set->p[0]->n_div;
+ dim = isl_dim_map(dim);
+ n_param = isl_dim_size(dim, isl_dim_param);
+ n_set = isl_dim_size(dim, isl_dim_in);
+ dim = isl_dim_extend(dim, n_param, n_set, n_set + n_div);
+ bmap = isl_basic_map_alloc_dim(dim, 0, n_set, 2 * n_div);
+ for (i = 0; i < n_set; ++i)
+ bmap = var_equal(bmap, i);
+
+ total = n_param + n_set + n_set + n_div;
+ for (i = 0; i < n_div; ++i) {
+ k = isl_basic_map_alloc_inequality(bmap);
+ if (k < 0)
+ goto error;
+ isl_seq_cpy(bmap->ineq[k], set->p[0]->div[i]+1, 1+n_param);
+ isl_seq_clr(bmap->ineq[k]+1+n_param, n_set);
+ isl_seq_cpy(bmap->ineq[k]+1+n_param+n_set,
+ set->p[0]->div[i]+1+1+n_param, n_set + n_div);
+ isl_int_neg(bmap->ineq[k][1+n_param+n_set+n_set+i],
+ set->p[0]->div[i][0]);
+
+ l = isl_basic_map_alloc_inequality(bmap);
+ if (l < 0)
+ goto error;
+ isl_seq_neg(bmap->ineq[l], bmap->ineq[k], 1 + total);
+ isl_int_add(bmap->ineq[l][0], bmap->ineq[l][0],
+ set->p[0]->div[i][0]);
+ isl_int_sub_ui(bmap->ineq[l][0], bmap->ineq[l][0], 1);
+ }
+
+ isl_set_free(set);
+ return isl_map_from_basic_map(bmap);
+error:
+ isl_set_free(set);
+ isl_basic_map_free(bmap);
+ return NULL;
+}
+
+int isl_basic_set_size(__isl_keep isl_basic_set *bset)
+{
+ unsigned dim;
+ int size = 0;
+
+ if (!bset)
+ return -1;
+
+ dim = isl_basic_set_total_dim(bset);
+ size += bset->n_eq * (1 + dim);
+ size += bset->n_ineq * (1 + dim);
+ size += bset->n_div * (2 + dim);
+
+ return size;
+}
+
+int isl_set_size(__isl_keep isl_set *set)
+{
+ int i;
+ int size = 0;
+
+ if (!set)
+ return -1;
+
+ for (i = 0; i < set->n; ++i)
+ size += isl_basic_set_size(set->p[i]);
+
+ return size;
+}
projects / platform / upstream / isl.git / blobdiff