440   std::vector<SourceMappingRegion> RegionStack;  member
488     RegionStack.emplace_back(Count, StartLoc, EndLoc);  in pushRegion()
490     return RegionStack.size() - 1;  in pushRegion()
496     size_t Index = RegionStack.size();  in completeDeferred()
530     RegionStack.push_back(DR);  in completeDeferred()
541     if (LastTerminatedRegion->second != RegionStack.size())  in completeTopLevelDeferredRegion()
548     SourceMappingRegion DR = RegionStack.back();  in completeTopLevelDeferredRegion()
569     assert(RegionStack.size() >= ParentIndex && "parent not in stack");  in popRegions()
571     while (RegionStack.size() > ParentIndex) {  in popRegions()
572       SourceMappingRegion &Region = RegionStack.back();  in popRegions()
577                                     : RegionStack[ParentIndex].getEndLoc();  in popRegions()
642       RegionStack.pop_back();  in popRegions()
647           RegionStack.size() < LastTerminatedRegion->second)  in popRegions()
655     assert(!RegionStack.empty() && "statement has no region");  in getRegion()
656     return RegionStack.back();  in getRegion()
734     for (SourceMappingRegion &I : llvm::reverse(RegionStack)) {  in handleFileExit()
796     LastTerminatedRegion = {EndLoc, RegionStack.size()};  in terminateRegion()
890     assert(RegionStack.empty() && "Regions entered but never exited");  in VisitDecl()
1124         for (size_t i = RegionStack.size(); i != Index; --i) {  in VisitSwitchStmt()
1125           if (!RegionStack[i - 1].hasEndLoc())  in VisitSwitchStmt()
1126             RegionStack[i - 1].setEndLoc(getEnd(CS->body_back()));  in VisitSwitchStmt()