1 //= LoongArchRegisterInfo.h - LoongArch Register Information Impl -*- C++ -*-=//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file contains the LoongArch implementation of the TargetRegisterInfo
10 // class.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_LOONGARCH_LOONGARCHREGISTERINFO_H
15 #define LLVM_LIB_TARGET_LOONGARCH_LOONGARCHREGISTERINFO_H
16 
17 #include "llvm/CodeGen/TargetRegisterInfo.h"
18 
19 #define GET_REGINFO_HEADER
20 #include "LoongArchGenRegisterInfo.inc"
21 
22 namespace llvm {
23 
24 struct LoongArchRegisterInfo : public LoongArchGenRegisterInfo {
25 
26   LoongArchRegisterInfo(unsigned HwMode);
27 
28   const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF) const override;
29   const uint32_t *getCallPreservedMask(const MachineFunction &MF,
30                                        CallingConv::ID) const override;
31   const uint32_t *getNoPreservedMask() const override;
32 
33   BitVector getReservedRegs(const MachineFunction &MF) const override;
34 
35   const TargetRegisterClass *
36   getPointerRegClass(const MachineFunction &MF,
37                      unsigned Kind = 0) const override {
38     return &LoongArch::GPRRegClass;
39   }
40 
41   bool eliminateFrameIndex(MachineBasicBlock::iterator MI, int SPAdj,
42                            unsigned FIOperandNum,
43                            RegScavenger *RS = nullptr) const override;
44 
45   Register getFrameRegister(const MachineFunction &MF) const override;
46 
47   bool requiresRegisterScavenging(const MachineFunction &MF) const override {
48     return true;
49   }
50 
51   bool requiresFrameIndexScavenging(const MachineFunction &MF) const override {
52     return true;
53   }
54 };
55 } // end namespace llvm
56 
57 #endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHREGISTERINFO_H
58