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 uint16_t *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 trackLivenessAfterRegAlloc(const MachineFunction &MF) const;
54
55  bool useFPForScavengingIndex(const MachineFunction &MF) const;
56
57  void eliminateFrameIndex(MachineBasicBlock::iterator II,
58                           int SPAdj, unsigned FIOperandNum,
59                           RegScavenger *RS = NULL) const;
60
61  // Debug information queries.
62  unsigned getFrameRegister(const MachineFunction &MF) const;
63
64  //! Return whether to emit frame moves
65  static bool needsFrameMoves(const MachineFunction &MF);
66};
67
68} // end namespace llvm
69
70#endif
71