//
//===----------------------------------------------------------------------===//
-#ifndef ARMBASEREGISTERINFO_H
-#define ARMBASEREGISTERINFO_H
+#ifndef LLVM_LIB_TARGET_ARM_ARMBASEREGISTERINFO_H
+#define LLVM_LIB_TARGET_ARM_ARMBASEREGISTERINFO_H
-#include "ARM.h"
+#include "MCTargetDesc/ARMBaseInfo.h"
#include "llvm/Target/TargetRegisterInfo.h"
#define GET_REGINFO_HEADER
#include "ARMGenRegisterInfo.inc"
namespace llvm {
- class ARMSubtarget;
- class ARMBaseInstrInfo;
- class Type;
-
/// Register allocation hints.
namespace ARMRI {
enum {
case R4: case R5: case R6: case R7:
case LR: case SP: case PC:
return true;
- case R8: case R9: case R10: case R11:
+ case R8: case R9: case R10: case R11: case R12:
// For iOS we want r7 and lr to be next to each other.
return !isIOS;
default:
static inline bool isARMArea2Register(unsigned Reg, bool isIOS) {
using namespace ARM;
switch (Reg) {
- case R8: case R9: case R10: case R11:
+ case R8: case R9: case R10: case R11: case R12:
// iOS has this second area.
return isIOS;
default:
}
}
+static inline bool isCalleeSavedRegister(unsigned Reg,
+ const MCPhysReg *CSRegs) {
+ for (unsigned i = 0; CSRegs[i]; ++i)
+ if (Reg == CSRegs[i])
+ return true;
+ return false;
+}
+
class ARMBaseRegisterInfo : public ARMGenRegisterInfo {
protected:
- const ARMBaseInstrInfo &TII;
- const ARMSubtarget &STI;
-
- /// FramePtr - ARM physical register used as frame ptr.
- unsigned FramePtr;
-
/// BasePtr - ARM physical register used as a base ptr in complex stack
/// frames. I.e., when we need a 3rd base, not just SP and FP, due to
/// variable size stack objects.
unsigned BasePtr;
// Can be only subclassed.
- explicit ARMBaseRegisterInfo(const ARMBaseInstrInfo &tii,
- const ARMSubtarget &STI);
+ explicit ARMBaseRegisterInfo();
// Return the opcode that implements 'Op', or 0 if no opcode
unsigned getOpcode(int Op) const;
public:
/// Code Generation virtual methods...
- const uint16_t *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
- const uint32_t *getCallPreservedMask(CallingConv::ID) const;
- const uint32_t *getNoPreservedMask() const;
-
- BitVector getReservedRegs(const MachineFunction &MF) 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;
+ const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF) const override;
+ const uint32_t *getCallPreservedMask(const MachineFunction &MF,
+ CallingConv::ID) const override;
+ const uint32_t *getNoPreservedMask() const override;
+
+ /// getThisReturnPreservedMask - Returns a call preserved mask specific to the
+ /// case that 'returned' is on an i32 first argument if the calling convention
+ /// is one that can (partially) model this attribute with a preserved mask
+ /// (i.e. it is a calling convention that uses the same register for the first
+ /// i32 argument and an i32 return value)
+ ///
+ /// Should return NULL in the case that the calling convention does not have
+ /// this property
+ const uint32_t *getThisReturnPreservedMask(const MachineFunction &MF,
+ CallingConv::ID) const;
+
+ BitVector getReservedRegs(const MachineFunction &MF) const override;
+
+ const TargetRegisterClass *
+ getPointerRegClass(const MachineFunction &MF,
+ unsigned Kind = 0) const override;
+ const TargetRegisterClass *
+ getCrossCopyRegClass(const TargetRegisterClass *RC) const override;
+
+ const TargetRegisterClass *
+ getLargestLegalSuperClass(const TargetRegisterClass *RC,
+ const MachineFunction &MF) const override;
unsigned getRegPressureLimit(const TargetRegisterClass *RC,
- MachineFunction &MF) const;
+ MachineFunction &MF) const override;
void getRegAllocationHints(unsigned VirtReg,
ArrayRef<MCPhysReg> Order,
SmallVectorImpl<MCPhysReg> &Hints,
const MachineFunction &MF,
- const VirtRegMap *VRM) const;
+ const VirtRegMap *VRM,
+ const LiveRegMatrix *Matrix) const override;
- void UpdateRegAllocHint(unsigned Reg, unsigned NewReg,
- MachineFunction &MF) const;
-
- virtual bool avoidWriteAfterWrite(const TargetRegisterClass *RC) const;
+ void updateRegAllocHint(unsigned Reg, unsigned NewReg,
+ MachineFunction &MF) const override;
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;
+ bool canRealignStack(const MachineFunction &MF) const override;
+ int64_t getFrameIndexInstrOffset(const MachineInstr *MI,
+ int Idx) const override;
+ bool needsFrameBaseReg(MachineInstr *MI, int64_t Offset) const override;
void materializeFrameBaseRegister(MachineBasicBlock *MBB,
unsigned BaseReg, int FrameIdx,
- int64_t Offset) const;
- void resolveFrameIndex(MachineBasicBlock::iterator I,
- unsigned BaseReg, int64_t Offset) const;
- bool isFrameOffsetLegal(const MachineInstr *MI, int64_t Offset) const;
+ int64_t Offset) const override;
+ void resolveFrameIndex(MachineInstr &MI, unsigned BaseReg,
+ int64_t Offset) const override;
+ bool isFrameOffsetLegal(const MachineInstr *MI, unsigned BaseReg,
+ int64_t Offset) const override;
bool cannotEliminateFrame(const MachineFunction &MF) const;
// Debug information queries.
- unsigned getFrameRegister(const MachineFunction &MF) const;
+ unsigned getFrameRegister(const MachineFunction &MF) const override;
unsigned getBaseRegister() const { return BasePtr; }
- // Exception handling queries.
- unsigned getEHExceptionRegister() const;
- unsigned getEHHandlerRegister() const;
-
bool isLowRegister(unsigned Reg) const;
/// specified immediate.
virtual void emitLoadConstPool(MachineBasicBlock &MBB,
MachineBasicBlock::iterator &MBBI,
- DebugLoc dl,
- unsigned DestReg, unsigned SubIdx,
- int Val,
- ARMCC::CondCodes Pred = ARMCC::AL,
+ DebugLoc dl, unsigned DestReg, unsigned SubIdx,
+ int Val, ARMCC::CondCodes Pred = ARMCC::AL,
unsigned PredReg = 0,
unsigned MIFlags = MachineInstr::NoFlags)const;
/// Code Generation virtual methods...
- virtual bool requiresRegisterScavenging(const MachineFunction &MF) const;
+ bool requiresRegisterScavenging(const MachineFunction &MF) const override;
- virtual bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const;
+ bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const override;
- virtual bool requiresFrameIndexScavenging(const MachineFunction &MF) const;
+ bool requiresFrameIndexScavenging(const MachineFunction &MF) const override;
- virtual bool requiresVirtualBaseRegisters(const MachineFunction &MF) const;
+ bool requiresVirtualBaseRegisters(const MachineFunction &MF) const override;
- virtual void eliminateCallFramePseudoInstr(MachineFunction &MF,
- MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I) const;
+ void eliminateFrameIndex(MachineBasicBlock::iterator II,
+ int SPAdj, unsigned FIOperandNum,
+ RegScavenger *RS = nullptr) const override;
- virtual void eliminateFrameIndex(MachineBasicBlock::iterator II,
- int SPAdj, unsigned FIOperandNum,
- RegScavenger *RS = NULL) const;
+ /// \brief SrcRC and DstRC will be morphed into NewRC if this returns true
+ bool shouldCoalesce(MachineInstr *MI,
+ const TargetRegisterClass *SrcRC,
+ unsigned SubReg,
+ const TargetRegisterClass *DstRC,
+ unsigned DstSubReg,
+ const TargetRegisterClass *NewRC) const override;
};
} // end namespace llvm
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