170       unsigned AliasReg = *AI;  in StartBlock()  local
171       State->UnionGroups(AliasReg, 0);  in StartBlock()
172       KillIndices[AliasReg] = BB->size();  in StartBlock()
173       DefIndices[AliasReg] = ~0u;  in StartBlock()
380       unsigned AliasReg = *AI;  in PrescanInstruction()  local
381       if (State->IsLive(AliasReg)) {  in PrescanInstruction()
382         State->UnionGroups(Reg, AliasReg);  in PrescanInstruction()
384               TRI->getName(AliasReg) << ")");  in PrescanInstruction()
671           unsigned AliasReg = *AI;  in FindSuitableFreeRegisters()  local
672           if (State->IsLive(AliasReg) ||  in FindSuitableFreeRegisters()
673               (KillIndices[Reg] > DefIndices[AliasReg])) {  in FindSuitableFreeRegisters()
674             DEBUG(dbgs() << "(alias " << TRI->getName(AliasReg) << " live)");  in FindSuitableFreeRegisters()