545                                              ValueDFSStack &RenameStack,  in materializeStack()  argument
548   auto RevIter = RenameStack.rbegin();  in materializeStack()
549   for (; RevIter != RenameStack.rend(); ++RevIter)  in materializeStack()
553   size_t Start = RevIter - RenameStack.rbegin();  in materializeStack()
557   for (auto RenameIter = RenameStack.end() - Start;  in materializeStack()
558        RenameIter != RenameStack.end(); ++RenameIter) {  in materializeStack()
560         RenameIter == RenameStack.begin() ? OrigOp : (RenameIter - 1)->Def;  in materializeStack()
563     ValInfo->RenamedOp = (RenameStack.end() - Start) == RenameStack.begin()  in materializeStack()
565                              : (RenameStack.end() - Start - 1)->Def;  in materializeStack()
604   return RenameStack.back().Def;  in materializeStack()
691     SmallVector<ValueDFS, 8> RenameStack;  in renameUses()  local
698       if (RenameStack.empty()) {  in renameUses()
702                           << RenameStack.back().DFSIn << ","  in renameUses()
703                           << RenameStack.back().DFSOut << ")\n");  in renameUses()
710       bool OutOfScope = !stackIsInScope(RenameStack, VD);  in renameUses()
713         popStackUntilDFSScope(RenameStack, VD);  in renameUses()
715           RenameStack.push_back(VD);  in renameUses()
720       if (RenameStack.empty())  in renameUses()
729       ValueDFS &Result = RenameStack.back();  in renameUses()
735         Result.Def = materializeStack(Counter, RenameStack, Op);  in renameUses()