#ifndef LLVM_LIB_CODEGEN_ANTIDEPBREAKER_H
#define LLVM_LIB_CODEGEN_ANTIDEPBREAKER_H
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/ScheduleDAG.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include <vector>
namespace llvm {
class LLVM_LIBRARY_VISIBILITY AntiDepBreaker {
public:
typedef std::vector<std::pair<MachineInstr *, MachineInstr *> >
DbgValueVector;
virtual ~AntiDepBreaker();
virtual void StartBlock(MachineBasicBlock *BB) =0;
virtual unsigned BreakAntiDependencies(const std::vector<SUnit>& SUnits,
MachineBasicBlock::iterator Begin,
MachineBasicBlock::iterator End,
unsigned InsertPosIndex,
DbgValueVector &DbgValues) = 0;
virtual void Observe(MachineInstr *MI, unsigned Count,
unsigned InsertPosIndex) =0;
virtual void FinishBlock() =0;
void UpdateDbgValue(MachineInstr *MI, unsigned OldReg, unsigned NewReg) {
assert (MI->isDebugValue() && "MI is not DBG_VALUE!");
if (MI && MI->getOperand(0).isReg() && MI->getOperand(0).getReg() == OldReg)
MI->getOperand(0).setReg(NewReg);
}
};
}
#endif