528                                              ValueDFSStack &RenameStack,  in materializeStack()  argument
531   auto RevIter = RenameStack.rbegin();  in materializeStack()
532   for (; RevIter != RenameStack.rend(); ++RevIter)  in materializeStack()
536   size_t Start = RevIter - RenameStack.rbegin();  in materializeStack()
540   for (auto RenameIter = RenameStack.end() - Start;  in materializeStack()
541        RenameIter != RenameStack.end(); ++RenameIter) {  in materializeStack()
543         RenameIter == RenameStack.begin() ? OrigOp : (RenameIter - 1)->Def;  in materializeStack()
546     ValInfo->RenamedOp = (RenameStack.end() - Start) == RenameStack.begin()  in materializeStack()
548                              : (RenameStack.end() - Start - 1)->Def;  in materializeStack()
587   return RenameStack.back().Def;  in materializeStack()
674     SmallVector<ValueDFS, 8> RenameStack;  in renameUses()  local
681       if (RenameStack.empty()) {  in renameUses()
685                           << RenameStack.back().DFSIn << ","  in renameUses()
686                           << RenameStack.back().DFSOut << ")\n");  in renameUses()
693       bool OutOfScope = !stackIsInScope(RenameStack, VD);  in renameUses()
696         popStackUntilDFSScope(RenameStack, VD);  in renameUses()
698           RenameStack.push_back(VD);  in renameUses()
703       if (RenameStack.empty())  in renameUses()
712       ValueDFS &Result = RenameStack.back();  in renameUses()
718         Result.Def = materializeStack(Counter, RenameStack, Op);  in renameUses()