-//===- ARMBaseRegisterInfo.h - ARM Register Information Impl ----*- C++ -*-===//
+//===-- ARMBaseRegisterInfo.h - ARM Register Information Impl ---*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
#include "ARM.h"
#include "llvm/Target/TargetRegisterInfo.h"
-#include "ARMGenRegisterInfo.h.inc"
+
+#define GET_REGINFO_HEADER
+#include "ARMGenRegisterInfo.inc"
namespace llvm {
class ARMSubtarget;
};
}
-/// isARMLowRegister - Returns true if the register is low register r0-r7.
-///
-static inline bool isARMLowRegister(unsigned Reg) {
+/// isARMArea1Register - Returns true if the register is a low register (r0-r7)
+/// or a stack/pc register that we should push/pop.
+static inline bool isARMArea1Register(unsigned Reg, bool isIOS) {
+ using namespace ARM;
+ switch (Reg) {
+ case R0: case R1: case R2: case R3:
+ case R4: case R5: case R6: case R7:
+ case LR: case SP: case PC:
+ return true;
+ case R8: case R9: case R10: case R11:
+ // For iOS we want r7 and lr to be next to each other.
+ return !isIOS;
+ default:
+ return false;
+ }
+}
+
+static inline bool isARMArea2Register(unsigned Reg, bool isIOS) {
+ using namespace ARM;
+ switch (Reg) {
+ case R8: case R9: case R10: case R11:
+ // iOS has this second area.
+ return isIOS;
+ default:
+ return false;
+ }
+}
+
+static inline bool isARMArea3Register(unsigned Reg, bool isIOS) {
using namespace ARM;
switch (Reg) {
- case R0: case R1: case R2: case R3:
- case R4: case R5: case R6: case R7:
- return true;
- default:
- return false;
+ case D15: case D14: case D13: case D12:
+ case D11: case D10: case D9: case D8:
+ return true;
+ default:
+ return false;
}
}
unsigned getOpcode(int Op) const;
public:
- /// getRegisterNumbering - Given the enum value for some register, e.g.
- /// 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;
+ const uint16_t *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
+ const uint32_t *getCallPreservedMask(CallingConv::ID) const;
BitVector getReservedRegs(const MachineFunction &MF) 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;
-
/// canCombineSubRegIndices - Given a register class and a list of
/// subregister indices, return true if it's possible to combine the
/// subregister indices into one that corresponds to a larger
SmallVectorImpl<unsigned> &SubIndices,
unsigned &NewSubIdx) const;
- const TargetRegisterClass *getPointerRegClass(unsigned Kind = 0) const;
+ const TargetRegisterClass*
+ getPointerRegClass(const MachineFunction &MF, unsigned Kind = 0) const;
+ const TargetRegisterClass*
+ getCrossCopyRegClass(const TargetRegisterClass *RC) const;
+
+ const TargetRegisterClass*
+ getLargestLegalSuperClass(const TargetRegisterClass *RC) const;
- std::pair<TargetRegisterClass::iterator,TargetRegisterClass::iterator>
- getAllocationOrder(const TargetRegisterClass *RC,
- unsigned HintType, unsigned HintReg,
- const MachineFunction &MF) const;
+ unsigned getRegPressureLimit(const TargetRegisterClass *RC,
+ MachineFunction &MF) const;
+
+ ArrayRef<uint16_t> getRawAllocationOrder(const TargetRegisterClass *RC,
+ unsigned HintType, unsigned HintReg,
+ const MachineFunction &MF) const;
unsigned ResolveRegAllocHint(unsigned Type, unsigned Reg,
const MachineFunction &MF) const;
void UpdateRegAllocHint(unsigned Reg, unsigned NewReg,
MachineFunction &MF) const;
- bool hasFP(const MachineFunction &MF) const;
+ virtual bool avoidWriteAfterWrite(const TargetRegisterClass *RC) const;
+
bool hasBasePointer(const MachineFunction &MF) const;
bool canRealignStack(const MachineFunction &MF) const;
bool needsStackRealignment(const MachineFunction &MF) const;
int64_t getFrameIndexInstrOffset(const MachineInstr *MI, int Idx) const;
bool needsFrameBaseReg(MachineInstr *MI, int64_t Offset) const;
- void materializeFrameBaseRegister(MachineBasicBlock::iterator I,
+ void materializeFrameBaseRegister(MachineBasicBlock *MBB,
unsigned BaseReg, int FrameIdx,
int64_t Offset) const;
void resolveFrameIndex(MachineBasicBlock::iterator I,
bool cannotEliminateFrame(const MachineFunction &MF) const;
- void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
- RegScavenger *RS = NULL) const;
-
// Debug information queries.
- unsigned getRARegister() const;
unsigned getFrameRegister(const MachineFunction &MF) const;
- int getFrameIndexReference(const MachineFunction &MF, int FI,
- unsigned &FrameReg) const;
- int ResolveFrameIndexReference(const MachineFunction &MF, int FI,
- unsigned &FrameReg, int SPAdj) const;
- int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
+ unsigned getBaseRegister() const { return BasePtr; }
// Exception handling queries.
unsigned getEHExceptionRegister() const;
unsigned getEHHandlerRegister() const;
- int getDwarfRegNum(unsigned RegNum, bool isEH) const;
-
bool isLowRegister(unsigned Reg) const;
unsigned DestReg, unsigned SubIdx,
int Val,
ARMCC::CondCodes Pred = ARMCC::AL,
- unsigned PredReg = 0) const;
+ unsigned PredReg = 0,
+ unsigned MIFlags = MachineInstr::NoFlags)const;
/// Code Generation virtual methods...
virtual bool isReservedReg(const MachineFunction &MF, unsigned Reg) const;
virtual bool requiresRegisterScavenging(const MachineFunction &MF) const;
+ virtual bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const;
+
virtual bool requiresFrameIndexScavenging(const MachineFunction &MF) const;
virtual bool requiresVirtualBaseRegisters(const MachineFunction &MF) const;
- virtual bool hasReservedCallFrame(const MachineFunction &MF) const;
- virtual bool canSimplifyCallFramePseudos(const 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 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;