1 //===- LanaiRegisterInfo.h - Lanai 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 Lanai implementation of the TargetRegisterInfo class.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_LIB_TARGET_LANAI_LANAIREGISTERINFO_H
14 #define LLVM_LIB_TARGET_LANAI_LANAIREGISTERINFO_H
15 
16 #include "llvm/CodeGen/TargetRegisterInfo.h"
17 
18 #define GET_REGINFO_HEADER
19 #include "LanaiGenRegisterInfo.inc"
20 
21 namespace llvm {
22 
23 struct LanaiRegisterInfo : public LanaiGenRegisterInfo {
24   LanaiRegisterInfo();
25 
26   const uint32_t *getCallPreservedMask(const MachineFunction &MF,
27                                        CallingConv::ID) const override;
28 
29   // Code Generation virtual methods.
30   const uint16_t *
31   getCalleeSavedRegs(const MachineFunction *MF = nullptr) const override;
32 
33   BitVector getReservedRegs(const MachineFunction &MF) const override;
34 
35   bool requiresRegisterScavenging(const MachineFunction &MF) const override;
36 
37   bool supportsBackwardScavenger() const override { return true; }
38 
39   bool eliminateFrameIndex(MachineBasicBlock::iterator II, int SPAdj,
40                            unsigned FIOperandNum,
41                            RegScavenger *RS = nullptr) const override;
42 
43   // Debug information queries.
44   unsigned getRARegister() const;
45   Register getFrameRegister(const MachineFunction &MF) const override;
46   Register getBaseRegister() const;
47   bool hasBasePointer(const MachineFunction &MF) const;
48 
49   int getDwarfRegNum(unsigned RegNum, bool IsEH) const;
50 };
51 
52 } // end namespace llvm
53 
54 #endif // LLVM_LIB_TARGET_LANAI_LANAIREGISTERINFO_H
55