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//===- XCoreRegisterInfo.h - XCore Register Information Impl ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the XCore implementation of the MRegisterInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef XCOREREGISTERINFO_H
#define XCOREREGISTERINFO_H
#include "llvm/Target/TargetRegisterInfo.h"
#include "XCoreGenRegisterInfo.h.inc"
namespace llvm {
class TargetInstrInfo;
struct XCoreRegisterInfo : public XCoreGenRegisterInfo {
private:
const TargetInstrInfo &TII;
void loadConstant(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
unsigned DstReg, int64_t Value, DebugLoc dl) const;
void storeToStack(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
unsigned SrcReg, int Offset, DebugLoc dl) const;
void loadFromStack(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
unsigned DstReg, int Offset, DebugLoc dl) const;
public:
XCoreRegisterInfo(const TargetInstrInfo &tii);
/// Code Generation virtual methods...
const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
BitVector getReservedRegs(const MachineFunction &MF) const;
bool requiresRegisterScavenging(const MachineFunction &MF) const;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const;
void eliminateFrameIndex(MachineBasicBlock::iterator II,
int SPAdj, RegScavenger *RS = NULL) const;
// Debug information queries.
unsigned getRARegister() const;
unsigned getFrameRegister(const MachineFunction &MF) const;
//! Return the array of argument passing registers
/*!
\note The size of this array is returned by getArgRegsSize().
*/
static const unsigned *getArgRegs(const MachineFunction *MF = 0);
//! Return the size of the argument passing register array
static unsigned getNumArgRegs(const MachineFunction *MF = 0);
//! Return whether to emit frame moves
static bool needsFrameMoves(const MachineFunction &MF);
//! Get DWARF debugging register number
int getDwarfRegNum(unsigned RegNum, bool isEH) const;
};
} // end namespace llvm
#endif
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