/// basic-block region and break them by renaming registers. Return
/// the number of anti-dependencies broken.
///
- virtual unsigned BreakAntiDependencies(std::vector<SUnit>& SUnits,
- MachineBasicBlock::iterator& Begin,
- MachineBasicBlock::iterator& End,
+ virtual unsigned BreakAntiDependencies(const std::vector<SUnit>& SUnits,
+ MachineBasicBlock::iterator Begin,
+ MachineBasicBlock::iterator End,
unsigned InsertPosIndex) =0;
/// Observe - Update liveness information to account for the current