310   for (GlobalAlias &GA : M.aliases())  in run()
311     if (Comdat *C = GA.getComdat())  in run()
312       ComdatMembers.insert(std::make_pair(C, &GA));  in run()
332   for (GlobalAlias &GA : M.aliases()) {  in run()
333     Changed |= RemoveUnusedGlobalValue(GA);  in run()
335     if (!GA.isDiscardableIfUnused())  in run()
336       MarkLive(GA);  in run()
338     UpdateGVDependencies(GA);  in run()
389   for (GlobalAlias &GA : M.aliases())  in run()
390     if (!AliveGlobals.count(&GA)) {  in run()
391       DeadAliases.push_back(&GA);  in run()
392       GA.setAliasee(nullptr);  in run()
429   for (GlobalAlias *GA : DeadAliases)  in run()
430     EraseUnusedGlobalValue(GA);  in run()