94   for (GlobalAlias &GA : M.aliases())  in run()
95     if (Comdat *C = GA.getComdat())  in run()
96       ComdatMembers.insert(std::make_pair(C, &GA));  in run()
109   for (GlobalAlias &GA : M.aliases()) {  in run()
110     Changed |= RemoveUnusedGlobalValue(GA);  in run()
112     if (!GA.isDiscardableIfUnused())  in run()
113       GlobalIsNeeded(&GA);  in run()
151   for (GlobalAlias &GA : M.aliases())  in run()
152     if (!AliveGlobals.count(&GA)) {  in run()
153       DeadAliases.push_back(&GA);  in run()
154       GA.setAliasee(nullptr);  in run()
187     for (GlobalAlias *GA : DeadAliases) {  in run()
188       RemoveUnusedGlobalValue(*GA);  in run()
189       M.getAliasList().erase(GA);  in run()