| 1 | #ifndef ISL_SCHEDULER_CLUSTERING_H |
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| 2 | #define ISL_SCHEDULER_CLUSTERING_H |
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| 3 | |
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| 4 | #include "isl_scheduler.h" |
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| 5 | |
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| 6 | /* Clustering information used by isl_schedule_node_compute_wcc_clustering. |
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| 7 | * |
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| 8 | * "n" is the number of SCCs in the original dependence graph |
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| 9 | * "scc" is an array of "n" elements, each representing an SCC |
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| 10 | * of the original dependence graph. All entries in the same cluster |
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| 11 | * have the same number of schedule rows. |
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| 12 | * "scc_cluster" maps each SCC index to the cluster to which it belongs, |
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| 13 | * where each cluster is represented by the index of the first SCC |
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| 14 | * in the cluster. Initially, each SCC belongs to a cluster containing |
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| 15 | * only that SCC. |
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| 16 | * |
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| 17 | * "scc_in_merge" is used by merge_clusters_along_edge to keep |
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| 18 | * track of which SCCs need to be merged. |
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| 19 | * |
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| 20 | * "cluster" contains the merged clusters of SCCs after the clustering |
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| 21 | * has completed. |
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| 22 | * |
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| 23 | * "scc_node" is a temporary data structure used inside copy_partial. |
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| 24 | * For each SCC, it keeps track of the number of nodes in the SCC |
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| 25 | * that have already been copied. |
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| 26 | */ |
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| 27 | struct isl_clustering { |
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| 28 | int n; |
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| 29 | struct isl_sched_graph *scc; |
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| 30 | struct isl_sched_graph *cluster; |
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| 31 | int *scc_cluster; |
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| 32 | int *scc_node; |
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| 33 | int *scc_in_merge; |
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| 34 | }; |
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| 35 | |
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| 36 | __isl_give isl_schedule_node *isl_schedule_node_compute_wcc_clustering( |
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| 37 | __isl_take isl_schedule_node *node, struct isl_sched_graph *graph); |
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| 38 | |
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| 39 | #endif |
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| 40 | |
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