340   std::map<unsigned, Chain*> ActiveChains;  in runOnBasicBlock()  local
344     scanInstruction(&MI, Idx++, ActiveChains, AllChains);  in runOnBasicBlock()
601     MachineInstr *MI, unsigned Idx, std::map<unsigned, Chain *> &ActiveChains,  in scanInstruction()  argument
608       maybeKillChain(I, Idx, ActiveChains);  in scanInstruction()
610       maybeKillChain(I, Idx, ActiveChains);  in scanInstruction()
620     ActiveChains[DestReg] = G.get();  in scanInstruction()
630     maybeKillChain(MI->getOperand(1), Idx, ActiveChains);  in scanInstruction()
631     maybeKillChain(MI->getOperand(2), Idx, ActiveChains);  in scanInstruction()
633       maybeKillChain(MI->getOperand(0), Idx, ActiveChains);  in scanInstruction()
635     if (ActiveChains.find(AccumReg) != ActiveChains.end()) {  in scanInstruction()
647         ActiveChains[AccumReg]->add(MI, Idx, getColor(DestReg));  in scanInstruction()
650           ActiveChains[DestReg] = ActiveChains[AccumReg];  in scanInstruction()
651           ActiveChains.erase(AccumReg);  in scanInstruction()
659       maybeKillChain(MI->getOperand(3), Idx, ActiveChains);  in scanInstruction()
665     ActiveChains[DestReg] = G.get();  in scanInstruction()
673       maybeKillChain(I, Idx, ActiveChains);  in scanInstruction()
675       maybeKillChain(I, Idx, ActiveChains);  in scanInstruction()
682                std::map<unsigned, Chain*> &ActiveChains) {  in maybeKillChain()  argument
690     if (MO.isKill() && ActiveChains.find(MO.getReg()) != ActiveChains.end()) {  in maybeKillChain()
693       ActiveChains[MO.getReg()]->setKill(MI, Idx, /*Immutable=*/MO.isTied());  in maybeKillChain()
695     ActiveChains.erase(MO.getReg());  in maybeKillChain()
699     for (auto I = ActiveChains.begin(), E = ActiveChains.end();  in maybeKillChain()
705         ActiveChains.erase(I++);  in maybeKillChain()