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