78     if (!LiveNodes.count(RA.Id))  in scanInstr()
79       WorkQ.push_back(RA.Id);  in scanInstr()
87     if (!LiveNodes.count(UA.Id))  in processDef()
88       WorkQ.push_back(UA.Id);  in processDef()
91     LiveNodes.insert(TA.Id);  in processDef()
97     if (!LiveNodes.count(DA.Id))  in processUse()
98       WorkQ.push_back(DA.Id);  in processUse()
141       if (LiveNodes.count(DA.Id))  in collect()
149         if (!LiveNodes.count(RA.Id))  in collect()
150           DeadNodes.insert(RA.Id);  in collect()
155         DeadInstrs.insert(IA.Id);  in collect()
204     return A.Id < B.Id;  in erase()