200       UseMap.insert(std::make_pair(Ref, std::make_pair(Owner, NextIndex)))  in addRef()
210   bool WasErased = UseMap.erase(Ref);  in dropRef()
217   auto I = UseMap.find(Ref);  in moveRef()
218   assert(I != UseMap.end() && "Expected to move a reference");  in moveRef()
220   UseMap.erase(I);  in moveRef()
221   bool WasInserted = UseMap.insert(std::make_pair(New, OwnerAndIndex)).second;  in moveRef()
234   if (UseMap.empty())  in replaceAllUsesWith()
239   SmallVector<UseTy, 8> Uses(UseMap.begin(), UseMap.end());  in replaceAllUsesWith()
246     if (!UseMap.count(Pair.first))  in replaceAllUsesWith()
256       UseMap.erase(Pair.first);  in replaceAllUsesWith()
278   assert(UseMap.empty() && "Expected all uses to be replaced");  in replaceAllUsesWith()
282   if (UseMap.empty())  in resolveAllUses()
286     UseMap.clear();  in resolveAllUses()
292   SmallVector<UseTy, 8> Uses(UseMap.begin(), UseMap.end());  in resolveAllUses()
296   UseMap.clear();  in resolveAllUses()