529 struct CounterCoverageMappingBuilder  struct
533   llvm::DenseMap<const Stmt *, unsigned> &CounterMap;
536   std::vector<SourceMappingRegion> RegionStack;
538   CounterExpressionBuilder Builder;
544   SourceLocation MostRecentLocation;
547   bool HasTerminateStmt = false;
550   Counter GapRegionCounter;
553   Counter subtractCounters(Counter LHS, Counter RHS) {  in subtractCounters()
558   Counter addCounters(Counter LHS, Counter RHS) {  in addCounters()
562   Counter addCounters(Counter C1, Counter C2, Counter C3) {  in addCounters()
569   Counter getRegionCounter(const Stmt *S) {  in getRegionCounter()
577   size_t pushRegion(Counter Count, Optional<SourceLocation> StartLoc = None,  in pushRegion()
590   size_t locationDepth(SourceLocation Loc) {  in locationDepth()
603   void popRegions(size_t ParentIndex) {  in popRegions()
680   SourceMappingRegion &getRegion() {  in getRegion()
687   Counter propagateCounts(Counter TopCount, const Stmt *S,  in propagateCounts()
706   bool ConditionFoldsToBool(const Expr *Cond) {  in ConditionFoldsToBool()
715   void createBranchRegion(const Expr *C, Counter TrueCnt, Counter FalseCnt) {  in createBranchRegion()
742   void createSwitchCaseRegion(const SwitchCase *SC, Counter TrueCnt,  in createSwitchCaseRegion()
752   bool isRegionAlreadyAdded(SourceLocation StartLoc, SourceLocation EndLoc,  in isRegionAlreadyAdded()
766   void adjustForOutOfOrderTraversal(SourceLocation EndLoc) {  in adjustForOutOfOrderTraversal()
785   void handleFileExit(SourceLocation NewLoc) {  in handleFileExit()
853   void extendRegion(const Stmt *S) {  in extendRegion()
863   void terminateRegion(const Stmt *S) {  in terminateRegion()
874   Optional<SourceRange> findGapAreaBetween(SourceLocation AfterLoc,  in findGapAreaBetween()
921   void fillGapAreaWithCount(SourceLocation StartLoc, SourceLocation EndLoc,  in fillGapAreaWithCount()
934   struct BreakContinue {
938   SmallVector<BreakContinue, 8> BreakContinueStack;
940   CounterCoverageMappingBuilder(  in CounterCoverageMappingBuilder()  function
947   void write(llvm::raw_ostream &OS) {  in write()
962   void VisitStmt(const Stmt *S) {  in VisitStmt()
990   void VisitDecl(const Decl *D) {  in VisitDecl()
1010   void VisitReturnStmt(const ReturnStmt *S) {  in VisitReturnStmt()
1017   void VisitCoroutineBodyStmt(const CoroutineBodyStmt *S) {  in VisitCoroutineBodyStmt()
1022   void VisitCoreturnStmt(const CoreturnStmt *S) {  in VisitCoreturnStmt()
1029   void VisitCXXThrowExpr(const CXXThrowExpr *E) {  in VisitCXXThrowExpr()
1036   void VisitGotoStmt(const GotoStmt *S) { terminateRegion(S); }  in VisitGotoStmt()
1038   void VisitLabelStmt(const LabelStmt *S) {  in VisitLabelStmt()
1047   void VisitBreakStmt(const BreakStmt *S) {  in VisitBreakStmt()
1056   void VisitContinueStmt(const ContinueStmt *S) {  in VisitContinueStmt()
1063   void VisitCallExpr(const CallExpr *E) {  in VisitCallExpr()
1073   void VisitWhileStmt(const WhileStmt *S) {  in VisitWhileStmt()
1113   void VisitDoStmt(const DoStmt *S) {  in VisitDoStmt()
1146   void VisitForStmt(const ForStmt *S) {  in VisitForStmt()
1203   void VisitCXXForRangeStmt(const CXXForRangeStmt *S) {  in VisitCXXForRangeStmt()
1242   void VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S) {  in VisitObjCForCollectionStmt()
1269   void VisitSwitchStmt(const SwitchStmt *S) {  in VisitSwitchStmt()
1338   void VisitSwitchCase(const SwitchCase *S) {  in VisitSwitchCase()
1361   void VisitIfStmt(const IfStmt *S) {  in VisitIfStmt()
1412   void VisitCXXTryStmt(const CXXTryStmt *S) {  in VisitCXXTryStmt()
1427   void VisitCXXCatchStmt(const CXXCatchStmt *S) {  in VisitCXXCatchStmt()
1431   void VisitAbstractConditionalOperator(const AbstractConditionalOperator *E) {  in VisitAbstractConditionalOperator()
1459   void VisitBinLAnd(const BinaryOperator *E) {  in VisitBinLAnd()
1486   void VisitBinLOr(const BinaryOperator *E) {  in VisitBinLOr()
1513   void VisitLambdaExpr(const LambdaExpr *LE) {  in VisitLambdaExpr()