338   std::map<unsigned, Chain*> ActiveChains;  in runOnBasicBlock()  local
342     scanInstruction(&MI, Idx++, ActiveChains, AllChains);  in runOnBasicBlock()
607     MachineInstr *MI, unsigned Idx, std::map<unsigned, Chain *> &ActiveChains,  in scanInstruction()  argument
614       maybeKillChain(I, Idx, ActiveChains);  in scanInstruction()
616       maybeKillChain(I, Idx, ActiveChains);  in scanInstruction()
626     ActiveChains[DestReg] = G.get();  in scanInstruction()
636     maybeKillChain(MI->getOperand(1), Idx, ActiveChains);  in scanInstruction()
637     maybeKillChain(MI->getOperand(2), Idx, ActiveChains);  in scanInstruction()
639       maybeKillChain(MI->getOperand(0), Idx, ActiveChains);  in scanInstruction()
641     if (ActiveChains.find(AccumReg) != ActiveChains.end()) {  in scanInstruction()
653         ActiveChains[AccumReg]->add(MI, Idx, getColor(DestReg));  in scanInstruction()
656           ActiveChains[DestReg] = ActiveChains[AccumReg];  in scanInstruction()
657           ActiveChains.erase(AccumReg);  in scanInstruction()
664       maybeKillChain(MI->getOperand(3), Idx, ActiveChains);  in scanInstruction()
670     ActiveChains[DestReg] = G.get();  in scanInstruction()
678       maybeKillChain(I, Idx, ActiveChains);  in scanInstruction()
680       maybeKillChain(I, Idx, ActiveChains);  in scanInstruction()
687                std::map<unsigned, Chain*> &ActiveChains) {  in maybeKillChain()  argument
695     if (MO.isKill() && ActiveChains.find(MO.getReg()) != ActiveChains.end()) {  in maybeKillChain()
698       ActiveChains[MO.getReg()]->setKill(MI, Idx, /*Immutable=*/MO.isTied());  in maybeKillChain()
700     ActiveChains.erase(MO.getReg());  in maybeKillChain()
704     for (auto I = ActiveChains.begin(), E = ActiveChains.end();  in maybeKillChain()
710         ActiveChains.erase(I++);  in maybeKillChain()