* Ecole Normale Superieure, 45 rue d’Ulm, 75230 Paris, France
*/
+#include <limits.h>
#include <isl/aff.h>
#include <isl/set.h>
#include <isl/ilp.h>
return graft;
}
-/* Eliminate the schedule dimension "pos" from "executed" and return
- * the result.
+/* Plug in all the know values of the current and outer dimensions
+ * in the domain of "executed". In principle, we only need to plug
+ * in the known value of the current dimension since the values of
+ * outer dimensions have been plugged in already.
+ * However, it turns out to be easier to just plug in all known values.
*/
-static __isl_give isl_union_map *eliminate(__isl_take isl_union_map *executed,
- int pos, __isl_keep isl_ast_build *build)
+static __isl_give isl_union_map *plug_in_values(
+ __isl_take isl_union_map *executed, __isl_keep isl_ast_build *build)
{
- isl_space *space;
- isl_map *elim;
-
- space = isl_ast_build_get_space(build, 1);
- space = isl_space_map_from_set(space);
- elim = isl_map_identity(space);
- elim = isl_map_eliminate(elim, isl_dim_in, pos, 1);
-
- executed = isl_union_map_apply_domain(executed,
- isl_union_map_from_map(elim));
-
- return executed;
+ return isl_ast_build_substitute_values_union_map_domain(build,
+ executed);
}
/* Check if the constraint "c" is a lower bound on dimension "pos",
* it can be printed as an assignment of the single value to the loop
* "iterator".
*
- * If the current level is eliminated, we eliminate the current dimension
- * from the inverse schedule to make sure no inner dimensions depend
+ * If the current level is eliminated, we explicitly plug in the value
+ * for the current level found by isl_ast_build_set_loop_bounds in the
+ * inverse schedule. This ensures that if we are working on a slice
+ * of the domain based on information available in the inverse schedule
+ * and the build domain, that then this information is also reflected
+ * in the inverse schedule. This operation also eliminates the current
+ * dimension from the inverse schedule making sure no inner dimensions depend
* on the current dimension. Otherwise, we create a for node, marking
* it degenerate if appropriate. The initial for node is still incomplete
* and will be completed in either refine_degenerate or refine_generic.
if (degenerate < 0 || eliminated < 0)
executed = isl_union_map_free(executed);
if (eliminated)
- executed = eliminate(executed, depth, build);
+ executed = plug_in_values(executed, sub_build);
else
node = create_for(build, degenerate);
return 0;
}
- if (!data->lower || isl_int_cmp_si(data->tmp, *data->n) < 0) {
+ if (isl_int_cmp_si(data->tmp, INT_MAX) <= 0 &&
+ (!data->lower || isl_int_cmp_si(data->tmp, *data->n) < 0)) {
isl_aff_free(data->lower);
data->lower = lower;
*data->n = isl_int_get_si(data->tmp);
* specialized to the current depth.
* "done" contains the union of the separation domains that have already
* been handled.
+ * "atomic" contains the domain that has effectively been made atomic.
+ * This domain may be larger than the intersection of option[atomic]
+ * and the schedule domain.
*/
struct isl_codegen_domains {
isl_basic_set_list *list;
isl_map *sep_class;
isl_set *done;
+ isl_set *atomic;
};
/* Add domains to domains->list for each individual value of the current
/* Construct a single basic set that includes the intersection of
* the schedule domain, the atomic option domain and the class domain.
- * Add the resulting basic set to domains->list.
+ * Add the resulting basic set to domains->list and save a copy
+ * in domains->atomic for use in compute_partial_domains.
*
* We construct a single domain rather than trying to combine
* the schedule domains of individual domains because we are working
atomic_domain = isl_set_intersect(atomic_domain, isl_set_copy(domain));
empty = isl_set_is_empty(atomic_domain);
if (empty < 0 || empty) {
- isl_set_free(atomic_domain);
+ domains->atomic = atomic_domain;
return empty < 0 ? -1 : 0;
}
atomic_domain = isl_set_coalesce(atomic_domain);
bset = isl_set_unshifted_simple_hull(atomic_domain);
+ domains->atomic = isl_set_from_basic_set(isl_basic_set_copy(bset));
domains->list = isl_basic_set_list_add(domains->list, bset);
return 0;
* the result with the current "class_domain" to ensure that the domains
* are disjoint from those generated from other class domains.
*
+ * The domain that has been made atomic may be larger than specified
+ * by the user since it needs to be representable as a single basic set.
+ * This possibly larger domain is stored in domains->atomic by
+ * compute_atomic_domain.
+ *
* If anything is left after handling separate, unroll and atomic,
* we split it up into basic sets and append the basic sets to domains->list.
*/
domain = isl_set_intersect(domain, isl_set_copy(class_domain));
if (compute_atomic_domain(domains, domain) < 0)
- goto error;
- domain = isl_set_subtract(domain,
- isl_set_copy(domains->option[atomic]));
+ domain = isl_set_free(domain);
+ domain = isl_set_subtract(domain, domains->atomic);
domain = isl_set_coalesce(domain);
domain = isl_set_make_disjoint(domain);
projects / platform / upstream / isl.git / blobdiff