59 struct Cluster {  struct
60   Cluster(int Sec, size_t S) : Sections{Sec}, Size(S) {}  in Cluster()  argument
82   std::vector<Cluster> Clusters;
139     Cluster &ToC = Clusters[To];  in CallGraphSort()
145   for (Cluster &C : Clusters)  in CallGraphSort()
150 static bool isNewDensityBad(Cluster &A, Cluster &B) {  in isNewDensityBad()
155 static void mergeClusters(Cluster &Into, Cluster &From) {  in mergeClusters()
169   std::vector<Cluster *> SecToCluster(Clusters.size());  in groupClusters()
183     Cluster &C = Clusters[SI];  in groupClusters()
189     Cluster *PredC = SecToCluster[C.BestPred.From];  in groupClusters()
208   llvm::erase_if(Clusters, [](const Cluster &C) {  in groupClusters()
214                    [](const Cluster &A, const Cluster &B) {  in groupClusters()
226   for (const Cluster &C : Clusters)  in run()