__isl_take isl_ast_node *node,
__isl_keep isl_ast_build *build,
void *user), void *user);
+ __isl_give isl_ast_build *
+ isl_ast_build_set_before_each_for(
+ __isl_take isl_ast_build *build,
+ __isl_give isl_id *(*fn)(
+ __isl_keep isl_ast_build *build,
+ void *user), void *user);
+ __isl_give isl_ast_build *
+ isl_ast_build_set_after_each_for(
+ __isl_take isl_ast_build *build,
+ __isl_give isl_ast_node *(*fn)(
+ __isl_take isl_ast_node *node,
+ __isl_keep isl_ast_build *build,
+ void *user), void *user);
The callback set by C<isl_ast_build_set_at_each_domain> will
be called for each domain AST node.
+The callbacks set by C<isl_ast_build_set_before_each_for>
+and C<isl_ast_build_set_after_each_for> will be called
+for each for AST node. The first will be called in depth-first
+pre-order, while the second will be called in depth-first post-order.
+Since C<isl_ast_build_set_before_each_for> is called before the for
+node is actually constructed, it is only passed an C<isl_ast_build>.
+The returned C<isl_id> will be added as an annotation (using
+C<isl_ast_node_set_annotation>) to the constructed for node.
+In particular, if the user has also specified an C<after_each_for>
+callback, then the annotation can be retrieved from the node passed to
+that callback using C<isl_ast_node_get_annotation>.
+All callbacks should C<NULL> on failure.
The given C<isl_ast_build> can be used to create new
C<isl_ast_expr> objects using C<isl_ast_build_expr_from_pw_aff>
or C<isl_ast_build_call_from_pw_multi_aff>.
__isl_keep isl_ast_build *build, void *user), void *user);
__isl_give isl_ast_build *isl_ast_build_set_before_each_for(
__isl_take isl_ast_build *build,
- __isl_give isl_ast_node *(*fn)(__isl_take isl_ast_node *node,
- __isl_keep isl_ast_build *build, void *user), void *user);
+ __isl_give isl_id *(*fn)(__isl_keep isl_ast_build *build,
+ void *user), void *user);
__isl_give isl_ast_build *isl_ast_build_set_after_each_for(
__isl_take isl_ast_build *build,
__isl_give isl_ast_node *(*fn)(__isl_take isl_ast_node *node,
dup->options = isl_union_map_copy(build->options);
dup->at_each_domain = build->at_each_domain;
dup->at_each_domain_user = build->at_each_domain_user;
+ dup->before_each_for = build->before_each_for;
+ dup->before_each_for_user = build->before_each_for_user;
+ dup->after_each_for = build->after_each_for;
+ dup->after_each_for_user = build->after_each_for_user;
dup->create_leaf = build->create_leaf;
dup->create_leaf_user = build->create_leaf_user;
return build;
}
+/* Set the "before_each_for" callback of "build" to "fn".
+ */
+__isl_give isl_ast_build *isl_ast_build_set_before_each_for(
+ __isl_take isl_ast_build *build,
+ __isl_give isl_id *(*fn)(__isl_keep isl_ast_build *build,
+ void *user), void *user)
+{
+ build = isl_ast_build_cow(build);
+
+ if (!build)
+ return NULL;
+
+ build->before_each_for = fn;
+ build->before_each_for_user = user;
+
+ return build;
+}
+
+/* Set the "after_each_for" callback of "build" to "fn".
+ */
+__isl_give isl_ast_build *isl_ast_build_set_after_each_for(
+ __isl_take isl_ast_build *build,
+ __isl_give isl_ast_node *(*fn)(__isl_take isl_ast_node *node,
+ __isl_keep isl_ast_build *build, void *user), void *user)
+{
+ build = isl_ast_build_cow(build);
+
+ if (!build)
+ return NULL;
+
+ build->after_each_for = fn;
+ build->after_each_for_user = user;
+
+ return build;
+}
+
/* Set the "create_leaf" callback of "build" to "fn".
*/
__isl_give isl_ast_build *isl_ast_build_set_create_leaf(
build->at_each_domain = NULL;
build->at_each_domain_user = NULL;
+ build->before_each_for = NULL;
+ build->before_each_for_user = NULL;
+ build->after_each_for = NULL;
+ build->after_each_for_user = NULL;
build->create_leaf = NULL;
build->create_leaf_user = NULL;
* an element of the domain. Each of these nodes is a user node
* with as expression a call expression.
*
+ * The "before_each_for" callback is called on each for node before
+ * its children have been created.
+ *
+ * The "after_each_for" callback is called on each for node after
+ * its children have been created.
+ *
* "executed" contains the inverse schedule at this point
* of the AST generation.
* It is currently only used in isl_ast_build_get_schedule, which is
__isl_keep isl_ast_build *build, void *user);
void *at_each_domain_user;
+ __isl_give isl_id *(*before_each_for)(
+ __isl_keep isl_ast_build *context, void *user);
+ void *before_each_for_user;
+ __isl_give isl_ast_node *(*after_each_for)(
+ __isl_take isl_ast_node *node,
+ __isl_keep isl_ast_build *context, void *user);
+ void *after_each_for_user;
+
__isl_give isl_ast_node *(*create_leaf)(
__isl_take isl_ast_build *build, void *user);
void *create_leaf_user;
return data.list;
}
+/* Call the before_each_for callback, if requested by the user.
+ */
+static __isl_give isl_ast_node *before_each_for(__isl_take isl_ast_node *node,
+ __isl_keep isl_ast_build *build)
+{
+ isl_id *id;
+
+ if (!node || !build)
+ return isl_ast_node_free(node);
+ if (!build->before_each_for)
+ return node;
+ id = build->before_each_for(build, build->before_each_for_user);
+ node = isl_ast_node_set_annotation(node, id);
+ return node;
+}
+
+/* Call the after_each_for callback, if requested by the user.
+ */
+static __isl_give isl_ast_graft *after_each_for(__isl_keep isl_ast_graft *graft,
+ __isl_keep isl_ast_build *build)
+{
+ if (!graft || !build)
+ isl_ast_graft_free(graft);
+ if (!build->after_each_for)
+ return graft;
+ graft->node = build->after_each_for(graft->node, build,
+ build->after_each_for_user);
+ if (!graft->node)
+ return isl_ast_graft_free(graft);
+ return graft;
+}
+
/* Eliminate the schedule dimension "pos" from "executed" and return
* the result.
*/
* we performed separation with explicit bounds.
* The very first step is then to copy these constraints to "bounds".
*
+ * Since we may be calling before_each_for and after_each_for
+ * callbacks, we record the current inverse schedule in the build.
+ *
* We consider three builds,
* "build" is the one in which the current level is created,
* "body_build" is the build in which the next level is created,
domain = isl_set_detect_equalities(domain);
hull = isl_set_unshifted_simple_hull(isl_set_copy(domain));
bounds = isl_basic_set_intersect(bounds, hull);
+ build = isl_ast_build_set_executed(build, isl_union_map_copy(executed));
depth = isl_ast_build_get_depth(build);
sub_build = isl_ast_build_copy(build);
body_build = isl_ast_build_copy(sub_build);
body_build = isl_ast_build_increase_depth(body_build);
+ if (!eliminated)
+ node = before_each_for(node, body_build);
children = generate_next_level(executed,
isl_ast_build_copy(body_build));
graft = refine_degenerate(graft, bounds, build, sub_build);
else
graft = refine_generic(graft, bounds, domain, build);
+ if (!eliminated)
+ graft = after_each_for(graft, body_build);
isl_ast_build_free(body_build);
isl_ast_build_free(sub_build);
return 0;
}
+/* Internal data structure for before_for and after_for callbacks.
+ *
+ * depth is the current depth
+ * before is the number of times before_for has been called
+ * after is the number of times after_for has been called
+ */
+struct isl_test_codegen_data {
+ int depth;
+ int before;
+ int after;
+};
+
+/* This function is called before each for loop in the AST generated
+ * from test_ast_gen1.
+ *
+ * Increment the number of calls and the depth.
+ * Check that the space returned by isl_ast_build_get_schedule_space
+ * matches the target space of the schedule returned by
+ * isl_ast_build_get_schedule.
+ * Return an isl_id that is checked by the corresponding call
+ * to after_for.
+ */
+static __isl_give isl_id *before_for(__isl_keep isl_ast_build *build,
+ void *user)
+{
+ struct isl_test_codegen_data *data = user;
+ isl_ctx *ctx;
+ isl_space *space;
+ isl_union_map *schedule;
+ isl_union_set *uset;
+ isl_set *set;
+ int empty;
+ char name[] = "d0";
+
+ ctx = isl_ast_build_get_ctx(build);
+
+ if (data->before >= 3)
+ isl_die(ctx, isl_error_unknown,
+ "unexpected number of for nodes", return NULL);
+ if (data->depth >= 2)
+ isl_die(ctx, isl_error_unknown,
+ "unexpected depth", return NULL);
+
+ snprintf(name, sizeof(name), "d%d", data->depth);
+ data->before++;
+ data->depth++;
+
+ schedule = isl_ast_build_get_schedule(build);
+ uset = isl_union_map_range(schedule);
+ if (isl_union_set_n_set(uset) != 1) {
+ isl_union_set_free(uset);
+ isl_die(ctx, isl_error_unknown,
+ "expecting single range space", return NULL);
+ }
+
+ space = isl_ast_build_get_schedule_space(build);
+ set = isl_union_set_extract_set(uset, space);
+ isl_union_set_free(uset);
+ empty = isl_set_is_empty(set);
+ isl_set_free(set);
+
+ if (empty < 0)
+ return NULL;
+ if (empty)
+ isl_die(ctx, isl_error_unknown,
+ "spaces don't match", return NULL);
+
+ return isl_id_alloc(ctx, name, NULL);
+}
+
+/* This function is called after each for loop in the AST generated
+ * from test_ast_gen1.
+ *
+ * Increment the number of calls and decrement the depth.
+ * Check that the annotation attached to the node matches
+ * the isl_id returned by the corresponding call to before_for.
+ */
+static __isl_give isl_ast_node *after_for(__isl_take isl_ast_node *node,
+ __isl_keep isl_ast_build *build, void *user)
+{
+ struct isl_test_codegen_data *data = user;
+ isl_id *id;
+ const char *name;
+ int valid;
+
+ data->after++;
+ data->depth--;
+
+ if (data->after > data->before)
+ isl_die(isl_ast_node_get_ctx(node), isl_error_unknown,
+ "mismatch in number of for nodes",
+ return isl_ast_node_free(node));
+
+ id = isl_ast_node_get_annotation(node);
+ if (!id)
+ isl_die(isl_ast_node_get_ctx(node), isl_error_unknown,
+ "missing annotation", return isl_ast_node_free(node));
+
+ name = isl_id_get_name(id);
+ valid = name && atoi(name + 1) == data->depth;
+ isl_id_free(id);
+
+ if (!valid)
+ isl_die(isl_ast_node_get_ctx(node), isl_error_unknown,
+ "wrong annotation", return isl_ast_node_free(node));
+
+ return node;
+}
+
+/* Check that the before_each_for and after_each_for callbacks
+ * are called for each for loop in the generated code,
+ * that they are called in the right order and that the isl_id
+ * returned from the before_each_for callback is attached to
+ * the isl_ast_node passed to the corresponding after_each_for call.
+ */
+static int test_ast_gen1(isl_ctx *ctx)
+{
+ const char *str;
+ isl_set *set;
+ isl_union_map *schedule;
+ isl_ast_build *build;
+ isl_ast_node *tree;
+ struct isl_test_codegen_data data;
+
+ str = "[N] -> { : N >= 10 }";
+ set = isl_set_read_from_str(ctx, str);
+ str = "[N] -> { A[i,j] -> S[8,i,3,j] : 0 <= i,j <= N; "
+ "B[i,j] -> S[8,j,9,i] : 0 <= i,j <= N }";
+ schedule = isl_union_map_read_from_str(ctx, str);
+
+ data.before = 0;
+ data.after = 0;
+ data.depth = 0;
+ build = isl_ast_build_from_context(set);
+ build = isl_ast_build_set_before_each_for(build,
+ &before_for, &data);
+ build = isl_ast_build_set_after_each_for(build,
+ &after_for, &data);
+ tree = isl_ast_build_ast_from_schedule(build, schedule);
+ isl_ast_build_free(build);
+ if (!tree)
+ return -1;
+
+ isl_ast_node_free(tree);
+
+ if (data.before != 3 || data.after != 3)
+ isl_die(ctx, isl_error_unknown,
+ "unexpected number of for nodes", return -1);
+
+ return 0;
+}
+
/* Check that the AST generator handles domains that are integrally disjoint
* but not ratinoally disjoint.
*/
static int test_ast_gen(isl_ctx *ctx)
{
+ if (test_ast_gen1(ctx) < 0)
+ return -1;
if (test_ast_gen2(ctx) < 0)
return -1;
if (test_ast_gen3(ctx) < 0)
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