1 //===- ARCRegisterInfo.h - ARC 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 ARC implementation of the MRegisterInfo class.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_LIB_TARGET_ARC_ARCREGISTERINFO_H
14 #define LLVM_LIB_TARGET_ARC_ARCREGISTERINFO_H
15 
16 #include "llvm/CodeGen/TargetRegisterInfo.h"
17 
18 #define GET_REGINFO_HEADER
19 #include "ARCGenRegisterInfo.inc"
20 
21 namespace llvm {
22 
23 class TargetInstrInfo;
24 class ARCSubtarget;
25 
26 struct ARCRegisterInfo : public ARCGenRegisterInfo {
27   const ARCSubtarget &ST;
28 
29 public:
30   ARCRegisterInfo(const ARCSubtarget &);
31 
32   /// Code Generation virtual methods...
33 
34   const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF) const override;
35 
36   BitVector getReservedRegs(const MachineFunction &MF) const override;
37 
38   bool requiresRegisterScavenging(const MachineFunction &MF) const override;
39 
40   bool useFPForScavengingIndex(const MachineFunction &MF) const override;
41 
42   bool supportsBackwardScavenger() const override { return true; }
43 
44   bool eliminateFrameIndex(MachineBasicBlock::iterator II, int SPAdj,
45                            unsigned FIOperandNum,
46                            RegScavenger *RS = nullptr) const override;
47 
48   const uint32_t *getCallPreservedMask(const MachineFunction &MF,
49                                        CallingConv::ID CC) const override;
50 
51   // Debug information queries.
52   Register getFrameRegister(const MachineFunction &MF) const override;
53 
54   //! Return whether to emit frame moves
55   static bool needsFrameMoves(const MachineFunction &MF);
56 };
57 
58 } // end namespace llvm
59 
60 #endif // LLVM_LIB_TARGET_ARC_ARCREGISTERINFO_H
61