89     if (!LiveNodes.count(RA.Id))  in scanInstr()
90       WorkQ.push_back(RA.Id);  in scanInstr()
98     if (!LiveNodes.count(UA.Id))  in processDef()
99       WorkQ.push_back(UA.Id);  in processDef()
102     LiveNodes.insert(TA.Id);  in processDef()
108     if (!LiveNodes.count(DA.Id))  in processUse()
109       WorkQ.push_back(DA.Id);  in processUse()
152       if (LiveNodes.count(DA.Id))  in collect()
160         if (!LiveNodes.count(RA.Id))  in collect()
161           DeadNodes.insert(RA.Id);  in collect()
166         DeadInstrs.insert(IA.Id);  in collect()
214     return A.Id < B.Id;  in erase()