//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_CODEGEN_CRITICALANTIDEPBREAKER_H
-#define LLVM_CODEGEN_CRITICALANTIDEPBREAKER_H
+#ifndef LLVM_LIB_CODEGEN_CRITICALANTIDEPBREAKER_H
+#define LLVM_LIB_CODEGEN_CRITICALANTIDEPBREAKER_H
#include "AntiDepBreaker.h"
+#include "llvm/ADT/BitVector.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/CodeGen/RegisterClassInfo.h"
#include "llvm/CodeGen/ScheduleDAG.h"
-#include "llvm/ADT/BitVector.h"
-#include "llvm/ADT/SmallSet.h"
#include <map>
namespace llvm {
+class RegisterClassInfo;
class TargetInstrInfo;
class TargetRegisterInfo;
MachineRegisterInfo &MRI;
const TargetInstrInfo *TII;
const TargetRegisterInfo *TRI;
+ const RegisterClassInfo &RegClassInfo;
/// AllocatableSet - The set of allocatable registers.
/// We'll be ignoring anti-dependencies on non-allocatable registers,
/// pointer.
std::vector<const TargetRegisterClass*> Classes;
- /// RegRegs - Map registers to all their references within a live range.
+ /// RegRefs - 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),
+ /// KillIndices - The index of the most recent kill (proceeding bottom-up),
/// or ~0u if the register is not live.
std::vector<unsigned> KillIndices;
- /// DefIndices - The index of the most recent complete def (proceding bottom
- /// up), or ~0u if the register is live.
+ /// DefIndices - The index of the most recent complete def (proceeding
+ /// bottom up), or ~0u if the register is live.
std::vector<unsigned> DefIndices;
/// KeepRegs - A set of registers which are live and cannot be changed to
/// break anti-dependencies.
- SmallSet<unsigned, 4> KeepRegs;
+ BitVector KeepRegs;
public:
- CriticalAntiDepBreaker(MachineFunction& MFi);
+ CriticalAntiDepBreaker(MachineFunction& MFi, const RegisterClassInfo&);
~CriticalAntiDepBreaker();
/// Start - Initialize anti-dep breaking for a new basic block.
- void StartBlock(MachineBasicBlock *BB);
+ void StartBlock(MachineBasicBlock *BB) override;
/// BreakAntiDependencies - Identifiy anti-dependencies along the critical
/// path
unsigned BreakAntiDependencies(const std::vector<SUnit>& SUnits,
MachineBasicBlock::iterator Begin,
MachineBasicBlock::iterator End,
- unsigned InsertPosIndex);
+ unsigned InsertPosIndex,
+ DbgValueVector &DbgValues) override;
/// Observe - Update liveness information to account for the current
/// instruction, which will not be scheduled.
///
- void Observe(MachineInstr *MI, unsigned Count, unsigned InsertPosIndex);
+ void Observe(MachineInstr *MI, unsigned Count,
+ unsigned InsertPosIndex) override;
/// Finish - Finish anti-dep breaking for a basic block.
- void FinishBlock();
+ void FinishBlock() override;
private:
void PrescanInstruction(MachineInstr *MI);
RegRefIter RegRefEnd,
unsigned AntiDepReg,
unsigned LastNewReg,
- const TargetRegisterClass *RC);
+ const TargetRegisterClass *RC,
+ SmallVectorImpl<unsigned> &Forbid);
};
}