-//===- ARMBaseRegisterInfo.h - ARM Register Information Impl --------*- C++ -*-===//
+//===- ARMBaseRegisterInfo.h - ARM Register Information Impl ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
public:
/// getRegisterNumbering - Given the enum value for some register, e.g.
- /// ARM::LR, return the number that it corresponds to (e.g. 14).
- static unsigned getRegisterNumbering(unsigned RegEnum);
-
- /// Same as previous getRegisterNumbering except it returns true in isSPVFP
- /// if the register is a single precision VFP register.
- static unsigned getRegisterNumbering(unsigned RegEnum, bool &isSPVFP);
+ /// ARM::LR, return the number that it corresponds to (e.g. 14). It
+ /// also returns true in isSPVFP if the register is a single precision
+ /// VFP register.
+ static unsigned getRegisterNumbering(unsigned RegEnum, bool *isSPVFP = 0);
/// Code Generation virtual methods...
const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
BitVector getReservedRegs(const MachineFunction &MF) const;
- const TargetRegisterClass *getPointerRegClass() const;
+ /// getMatchingSuperRegClass - Return a subclass of the specified register
+ /// class A so that each register in it has a sub-register of the
+ /// specified sub-register index which is in the specified register class B.
+ virtual const TargetRegisterClass *
+ getMatchingSuperRegClass(const TargetRegisterClass *A,
+ const TargetRegisterClass *B, unsigned Idx) const;
+
+ const TargetRegisterClass *getPointerRegClass(unsigned Kind = 0) const;
std::pair<TargetRegisterClass::iterator,TargetRegisterClass::iterator>
getAllocationOrder(const TargetRegisterClass *RC,
bool hasFP(const MachineFunction &MF) const;
+ bool canRealignStack(const MachineFunction &MF) const;
+ bool needsStackRealignment(const MachineFunction &MF) const;
+
+ bool cannotEliminateFrame(const MachineFunction &MF) const;
+
void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
RegScavenger *RS = NULL) const;
// Debug information queries.
unsigned getRARegister() const;
- unsigned getFrameRegister(MachineFunction &MF) const;
+ unsigned getFrameRegister(const MachineFunction &MF) const;
+ int getFrameIndexReference(const MachineFunction &MF, int FI,
+ unsigned &FrameReg) const;
+ int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
// Exception handling queries.
unsigned getEHExceptionRegister() const;
virtual void emitLoadConstPool(MachineBasicBlock &MBB,
MachineBasicBlock::iterator &MBBI,
DebugLoc dl,
- unsigned DestReg, int Val,
+ unsigned DestReg, unsigned SubIdx,
+ int Val,
ARMCC::CondCodes Pred = ARMCC::AL,
unsigned PredReg = 0) const;
virtual bool requiresRegisterScavenging(const MachineFunction &MF) const;
+ virtual bool requiresFrameIndexScavenging(const MachineFunction &MF) const;
+
virtual bool hasReservedCallFrame(MachineFunction &MF) const;
+ virtual bool canSimplifyCallFramePseudos(MachineFunction &MF) const;
virtual void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const;
- virtual void eliminateFrameIndex(MachineBasicBlock::iterator II,
- int SPAdj, RegScavenger *RS = NULL) const;
+ virtual unsigned eliminateFrameIndex(MachineBasicBlock::iterator II,
+ int SPAdj, FrameIndexValue *Value = NULL,
+ RegScavenger *RS = NULL) const;
virtual void emitPrologue(MachineFunction &MF) const;
virtual void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
private:
+ unsigned estimateRSStackSizeLimit(MachineFunction &MF) const;
+
unsigned getRegisterPairEven(unsigned Reg, const MachineFunction &MF) const;
unsigned getRegisterPairOdd(unsigned Reg, const MachineFunction &MF) const;