1 //===-- Mips16RegisterInfo.h - Mips16 Register Information ------*- 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 Mips16 implementation of the TargetRegisterInfo class.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_MIPS_MIPS16REGISTERINFO_H
15 #define LLVM_LIB_TARGET_MIPS_MIPS16REGISTERINFO_H
16 
17 #include "MipsRegisterInfo.h"
18 
19 namespace llvm {
20 class Mips16InstrInfo;
21 
22 class Mips16RegisterInfo : public MipsRegisterInfo {
23 public:
24   Mips16RegisterInfo();
25 
26   bool requiresRegisterScavenging(const MachineFunction &MF) const override;
27 
28   bool requiresFrameIndexScavenging(const MachineFunction &MF) const override;
29 
30   bool useFPForScavengingIndex(const MachineFunction &MF) const override;
31 
32   bool saveScavengerRegister(MachineBasicBlock &MBB,
33                                      MachineBasicBlock::iterator I,
34                                      MachineBasicBlock::iterator &UseMI,
35                                      const TargetRegisterClass *RC,
36                                      unsigned Reg) const override;
37 
38   const TargetRegisterClass *intRegClass(unsigned Size) const override;
39 
40 private:
41   void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo,
42                    int FrameIndex, uint64_t StackSize,
43                    int64_t SPOffset) const override;
44 };
45 
46 } // end namespace llvm
47 
48 #endif
49