73   auto updateBlockUsersInfo = [&](Operation *user) {  in optimizeReferenceCounting()  argument
74     BlockUsersInfo &info = blockUsers[user->getBlock()];  in optimizeReferenceCounting()
75     info.users.push_back(user);  in optimizeReferenceCounting()
77     if (auto addRef = dyn_cast<RuntimeAddRefOp>(user))  in optimizeReferenceCounting()
79     if (auto dropRef = dyn_cast<RuntimeDropRefOp>(user))  in optimizeReferenceCounting()
83   for (Operation *user : value.getUsers()) {  in optimizeReferenceCounting()
84     while (user->getParentRegion() != definingRegion) {  in optimizeReferenceCounting()
85       updateBlockUsersInfo(user);  in optimizeReferenceCounting()
86       user = user->getParentOp();  in optimizeReferenceCounting()
87       assert(user != nullptr && "value user lies outside of the value region");  in optimizeReferenceCounting()
90     updateBlockUsersInfo(user);  in optimizeReferenceCounting()
139         for (Operation *user : info.users) {  in optimizeReferenceCounting()
140           // `user` operation lies after `addRef` ...  in optimizeReferenceCounting()
141           if (user == addRef || user->isBeforeInBlock(addRef))  in optimizeReferenceCounting()
144           if (user == dropRef || dropRef->isBeforeInBlock(user))  in optimizeReferenceCounting()
147           // Find the first function call user of the reference counted value.  in optimizeReferenceCounting()
148           Operation *functionCall = dyn_cast<func::CallOp>(user);  in optimizeReferenceCounting()
156           // Find the last regular user of the reference counted value.  in optimizeReferenceCounting()
159                lastNonFunctionCallUser->isBeforeInBlock(user))) {  in optimizeReferenceCounting()
160             lastNonFunctionCallUser = user;  in optimizeReferenceCounting()
165         // Non function call user after the function call user of the reference  in optimizeReferenceCounting()