#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/SmallSet.h"
#include <map>
-#include <vector>
namespace llvm {
class TargetInstrInfo;
/// corresponding value is null. If the register is live but used in
/// multiple register classes, the corresponding value is -1 casted to a
/// pointer.
- std::vector<const TargetRegisterClass *> Classes;
+ std::vector<const TargetRegisterClass*> Classes;
/// RegRegs - Map registers to all their references within a live range.
std::multimap<unsigned, MachineOperand *> RegRefs;
+ typedef std::multimap<unsigned, MachineOperand *>::const_iterator
+ RegRefIter;
/// KillIndices - The index of the most recent kill (proceding bottom-up),
/// or ~0u if the register is not live.
private:
void PrescanInstruction(MachineInstr *MI);
void ScanInstruction(MachineInstr *MI, unsigned Count);
- unsigned findSuitableFreeRegister(MachineInstr *MI,
+ bool isNewRegModifiedByRefs(RegRefIter RegRefBegin,
+ RegRefIter RegRefEnd,
+ unsigned NewReg);
+ unsigned findSuitableFreeRegister(RegRefIter RegRefBegin,
+ RegRefIter RegRefEnd,
unsigned AntiDepReg,
unsigned LastNewReg,
- const TargetRegisterClass *);
+ const TargetRegisterClass *RC);
};
}