/// each operand referring to Reg.
/// @returns A filled-in RegInfo struct.
VirtRegInfo analyzeVirtReg(unsigned Reg,
- SmallVectorImpl<std::pair<MachineInstr*, unsigned> > *Ops = 0);
+ SmallVectorImpl<std::pair<MachineInstr*, unsigned> > *Ops = nullptr);
/// analyzePhysReg - Analyze how the current instruction or bundle uses a
/// physical register. This function should not be called after operator++(),