XCoreRegisterInfo.h revision 226633 
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  const TargetInstrInfo &TII;
29
30  void loadConstant(MachineBasicBlock &MBB,
31                  MachineBasicBlock::iterator I,
32                  unsigned DstReg, int64_t Value, DebugLoc dl) const;
33
34  void storeToStack(MachineBasicBlock &MBB,
35                  MachineBasicBlock::iterator I,
36                  unsigned SrcReg, int Offset, DebugLoc dl) const;
37
38  void loadFromStack(MachineBasicBlock &MBB,
39                  MachineBasicBlock::iterator I,
40                  unsigned DstReg, int Offset, DebugLoc dl) const;
41
42public:
43  XCoreRegisterInfo(const TargetInstrInfo &tii);
44
45  /// Code Generation virtual methods...
46
47  const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
48
49  BitVector getReservedRegs(const MachineFunction &MF) const;
50
51  bool requiresRegisterScavenging(const MachineFunction &MF) const;
52
53  bool useFPForScavengingIndex(const MachineFunction &MF) const;
54
55  void eliminateCallFramePseudoInstr(MachineFunction &MF,
56                                     MachineBasicBlock &MBB,
57                                     MachineBasicBlock::iterator I) const;
58
59  void eliminateFrameIndex(MachineBasicBlock::iterator II,
60                           int SPAdj, RegScavenger *RS = NULL) const;
61
62  // Debug information queries.
63  unsigned getFrameRegister(const MachineFunction &MF) const;
64
65  //! Return the array of argument passing registers
66  /*!
67    \note The size of this array is returned by getArgRegsSize().
68    */
69  static const unsigned *getArgRegs(const MachineFunction *MF = 0);
70
71  //! Return the size of the argument passing register array
72  static unsigned getNumArgRegs(const MachineFunction *MF = 0);
73
74  //! Return whether to emit frame moves
75  static bool needsFrameMoves(const MachineFunction &MF);
76};
77
78} // end namespace llvm
79
80#endif
81