1 //===- MSP430RegisterInfo.h - MSP430 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 MSP430 implementation of the MRegisterInfo class.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_TARGET_MSP430REGISTERINFO_H
15 #define LLVM_TARGET_MSP430REGISTERINFO_H
16 
17 #include "llvm/Target/TargetRegisterInfo.h"
18 #include "MSP430GenRegisterInfo.h.inc"
19 
20 namespace llvm {
21 
22 class TargetInstrInfo;
23 class MSP430TargetMachine;
24 
25 struct MSP430RegisterInfo : public MSP430GenRegisterInfo {
26 private:
27   MSP430TargetMachine &TM;
28   const TargetInstrInfo &TII;
29 
30   /// StackAlign - Default stack alignment.
31   ///
32   unsigned StackAlign;
33 public:
34   MSP430RegisterInfo(MSP430TargetMachine &tm, const TargetInstrInfo &tii);
35 
36   /// Code Generation virtual methods...
37   const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
38 
39   const TargetRegisterClass* const*
40     getCalleeSavedRegClasses(const MachineFunction *MF = 0) const;
41 
42   BitVector getReservedRegs(const MachineFunction &MF) const;
43   const TargetRegisterClass* getPointerRegClass(unsigned Kind = 0) const;
44 
45   bool hasFP(const MachineFunction &MF) const;
46   bool hasReservedCallFrame(MachineFunction &MF) const;
47 
48   void eliminateCallFramePseudoInstr(MachineFunction &MF,
49                                      MachineBasicBlock &MBB,
50                                      MachineBasicBlock::iterator I) const;
51 
52   void eliminateFrameIndex(MachineBasicBlock::iterator II,
53                            int SPAdj, RegScavenger *RS = NULL) const;
54 
55   void emitPrologue(MachineFunction &MF) const;
56   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
57 
58   void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
59 
60   // Debug information queries.
61   unsigned getRARegister() const;
62   unsigned getFrameRegister(MachineFunction &MF) const;
63 
64   //! Get DWARF debugging register number
65   int getDwarfRegNum(unsigned RegNum, bool isEH) const;
66 };
67 
68 } // end namespace llvm
69 
70 #endif // LLVM_TARGET_MSP430REGISTERINFO_H
71