537                                              ValueDFSStack &RenameStack,  in materializeStack()  argument
540   auto RevIter = RenameStack.rbegin();  in materializeStack()
541   for (; RevIter != RenameStack.rend(); ++RevIter)  in materializeStack()
545   size_t Start = RevIter - RenameStack.rbegin();  in materializeStack()
549   for (auto RenameIter = RenameStack.end() - Start;  in materializeStack()
550        RenameIter != RenameStack.end(); ++RenameIter) {  in materializeStack()
552         RenameIter == RenameStack.begin() ? OrigOp : (RenameIter - 1)->Def;  in materializeStack()
555     ValInfo->RenamedOp = (RenameStack.end() - Start) == RenameStack.begin()  in materializeStack()
557                              : (RenameStack.end() - Start - 1)->Def;  in materializeStack()
596   return RenameStack.back().Def;  in materializeStack()
683     SmallVector<ValueDFS, 8> RenameStack;  in renameUses()  local
690       if (RenameStack.empty()) {  in renameUses()
694                           << RenameStack.back().DFSIn << ","  in renameUses()
695                           << RenameStack.back().DFSOut << ")\n");  in renameUses()
702       bool OutOfScope = !stackIsInScope(RenameStack, VD);  in renameUses()
705         popStackUntilDFSScope(RenameStack, VD);  in renameUses()
707           RenameStack.push_back(VD);  in renameUses()
712       if (RenameStack.empty())  in renameUses()
721       ValueDFS &Result = RenameStack.back();  in renameUses()
727         Result.Def = materializeStack(Counter, RenameStack, Op);  in renameUses()