39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
#ifndef ISL_SCHEDULER_CLUSTERING_H
|
|
#define ISL_SCHEDULER_CLUSTERING_H
|
|
|
|
#include "isl_scheduler.h"
|
|
|
|
/* Clustering information used by isl_schedule_node_compute_wcc_clustering.
|
|
*
|
|
* "n" is the number of SCCs in the original dependence graph
|
|
* "scc" is an array of "n" elements, each representing an SCC
|
|
* of the original dependence graph. All entries in the same cluster
|
|
* have the same number of schedule rows.
|
|
* "scc_cluster" maps each SCC index to the cluster to which it belongs,
|
|
* where each cluster is represented by the index of the first SCC
|
|
* in the cluster. Initially, each SCC belongs to a cluster containing
|
|
* only that SCC.
|
|
*
|
|
* "scc_in_merge" is used by merge_clusters_along_edge to keep
|
|
* track of which SCCs need to be merged.
|
|
*
|
|
* "cluster" contains the merged clusters of SCCs after the clustering
|
|
* has completed.
|
|
*
|
|
* "scc_node" is a temporary data structure used inside copy_partial.
|
|
* For each SCC, it keeps track of the number of nodes in the SCC
|
|
* that have already been copied.
|
|
*/
|
|
struct isl_clustering {
|
|
int n;
|
|
struct isl_sched_graph *scc;
|
|
struct isl_sched_graph *cluster;
|
|
int *scc_cluster;
|
|
int *scc_node;
|
|
int *scc_in_merge;
|
|
};
|
|
|
|
__isl_give isl_schedule_node *isl_schedule_node_compute_wcc_clustering(
|
|
__isl_take isl_schedule_node *node, struct isl_sched_graph *graph);
|
|
|
|
#endif
|