1//===-- XCoreRegisterInfo.h - XCore Register Information Impl ---*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file contains the XCore implementation of the MRegisterInfo class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef XCOREREGISTERINFO_H
15#define XCOREREGISTERINFO_H
16
17#include "llvm/Target/TargetRegisterInfo.h"
18
19#define GET_REGINFO_HEADER
20#include "XCoreGenRegisterInfo.inc"
21
22namespace llvm {
23
24class TargetInstrInfo;
25
26struct XCoreRegisterInfo : public XCoreGenRegisterInfo {
27private:
28  void loadConstant(MachineBasicBlock &MBB,
29                  MachineBasicBlock::iterator I,
30                  unsigned DstReg, int64_t Value, DebugLoc dl) const;
31
32  void storeToStack(MachineBasicBlock &MBB,
33                  MachineBasicBlock::iterator I,
34                  unsigned SrcReg, int Offset, DebugLoc dl) const;
35
36  void loadFromStack(MachineBasicBlock &MBB,
37                  MachineBasicBlock::iterator I,
38                  unsigned DstReg, int Offset, DebugLoc dl) const;
39
40public:
41  XCoreRegisterInfo();
42
43  /// Code Generation virtual methods...
44
45  const uint16_t *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
46
47  BitVector getReservedRegs(const MachineFunction &MF) const;
48
49  bool requiresRegisterScavenging(const MachineFunction &MF) const;
50
51  bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const;
52
53  bool useFPForScavengingIndex(const MachineFunction &MF) const;
54
55  void eliminateFrameIndex(MachineBasicBlock::iterator II,
56                           int SPAdj, unsigned FIOperandNum,
57                           RegScavenger *RS = NULL) const;
58
59  // Debug information queries.
60  unsigned getFrameRegister(const MachineFunction &MF) const;
61
62  //! Return whether to emit frame moves
63  static bool needsFrameMoves(const MachineFunction &MF);
64};
65
66} // end namespace llvm
67
68#endif
69