59   using Level = CombinerInfo::ObserverLevel;  typedef in Combiner::WorkListMaintainer
63   create(Level Lvl, WorkListTy &WorkList, MachineRegisterInfo &MRI);
109     if constexpr (Lvl != Level::Basic) {  in erasingInstr()
117     if constexpr (Lvl == Level::Basic)  in createdInstr()
132     if constexpr (Lvl != Level::Basic)  in changingInstr()
138     if constexpr (Lvl == Level::Basic)  in changedInstr()
150     if constexpr (Lvl == Level::Basic)  in appliedCombine()
159       if constexpr (Lvl >= Level::SinglePass)  in appliedCombine()
177       if constexpr (Lvl >= Level::SinglePass) {  in appliedCombine()
209 Combiner::WorkListMaintainer::create(Level Lvl, WorkListTy &WorkList,  in create()
212   case Level::Basic:  in create()
213     return std::make_unique<WorkListMaintainerImpl<Level::Basic>>(WorkList,  in create()
215   case Level::DCE:  in create()
216     return std::make_unique<WorkListMaintainerImpl<Level::DCE>>(WorkList, MRI);  in create()
217   case Level::SinglePass:  in create()
218     return std::make_unique<WorkListMaintainerImpl<Level::SinglePass>>(WorkList,  in create()