337     using DriverID = clang::driver::options::ID;  in rulesFor()  typedef
342     DriverID PrevAlias[DriverID::LastOption] = {DriverID::OPT_INVALID};  in rulesFor()
343     DriverID NextAlias[DriverID::LastOption] = {DriverID::OPT_INVALID};  in rulesFor()
344     auto AddAlias = [&](DriverID Self, DriverID T) {  in rulesFor()
353     const char *const *Prefixes[DriverID::LastOption] = {nullptr};  in rulesFor()
357   if (DriverID::OPT_##ALIAS != DriverID::OPT_INVALID && ALIASARGS == nullptr)  \  in rulesFor()
358     AddAlias(DriverID::OPT_##ID, DriverID::OPT_##ALIAS);                       \  in rulesFor()
359   Prefixes[DriverID::OPT_##ID] = PREFIX;  in rulesFor()
367     for (unsigned ID = 1 /*Skip INVALID */; ID < DriverID::LastOption; ++ID) {  in rulesFor()
368       if (PrevAlias[ID] || ID == DriverID::OPT_Xclang)  in rulesFor()
372       for (unsigned A = ID; A != DriverID::OPT_INVALID; A = NextAlias[A]) {  in rulesFor()