const TargetInstrDesc &TID = UseMI->getDesc();
for (unsigned i = 0, e = TID.getNumOperands(); i != e; ++i) {
MachineOperand &MO = UseMI->getOperand(i);
- if (MO.getReg() == Reg &&
+ if (MO.isRegister() && MO.getReg() == Reg &&
(MO.isDef() || TID.getOperandConstraint(i, TOI::TIED_TO) != -1))
// Earlier use is a two-address one.
return true;