154 struct MapRegionCounters : public RecursiveASTVisitor<MapRegionCounters> {  struct
155   using Base = RecursiveASTVisitor<MapRegionCounters>;
158   unsigned NextCounter;
160   PGOHash Hash;
162   llvm::DenseMap<const Stmt *, unsigned> &CounterMap;
164   uint64_t ProfileVersion;
166   MapRegionCounters(PGOHashVersion HashVersion, uint64_t ProfileVersion,  in MapRegionCounters()  function
173   bool TraverseBlockExpr(BlockExpr *BE) { return true; }  in TraverseBlockExpr()
174   bool TraverseLambdaExpr(LambdaExpr *LE) {  in TraverseLambdaExpr()
180   bool TraverseCapturedStmt(CapturedStmt *CS) { return true; }  in TraverseCapturedStmt()
182   bool VisitDecl(const Decl *D) {  in VisitDecl()
202   PGOHash::HashType updateCounterMappings(Stmt *S) {  in updateCounterMappings()
213   bool VisitBinaryOperator(BinaryOperator *S) {  in VisitBinaryOperator()
222   bool VisitStmt(Stmt *S) {  in VisitStmt()
231   bool TraverseIfStmt(IfStmt *If) {  in TraverseIfStmt()
263   DEFINE_NESTABLE_TRAVERSAL(DoStmt)  in DEFINE_NESTABLE_TRAVERSAL()