1//===-- AMDGPURegisterInfo.h - AMDGPURegisterInfo Interface -*- 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/// \file
11/// \brief TargetRegisterInfo interface that is implemented by all hw codegen
12/// targets.
13//
14//===----------------------------------------------------------------------===//
15
16#ifndef AMDGPUREGISTERINFO_H
17#define AMDGPUREGISTERINFO_H
18
19#include "llvm/ADT/BitVector.h"
20#include "llvm/Target/TargetRegisterInfo.h"
21
22#define GET_REGINFO_HEADER
23#define GET_REGINFO_ENUM
24#include "AMDGPUGenRegisterInfo.inc"
25
26namespace llvm {
27
28class AMDGPUSubtarget;
29class TargetInstrInfo;
30
31struct AMDGPURegisterInfo : public AMDGPUGenRegisterInfo {
32  static const MCPhysReg CalleeSavedReg;
33  const AMDGPUSubtarget &ST;
34
35  AMDGPURegisterInfo(const AMDGPUSubtarget &st);
36
37  BitVector getReservedRegs(const MachineFunction &MF) const override {
38    assert(!"Unimplemented");  return BitVector();
39  }
40
41  virtual const TargetRegisterClass* getCFGStructurizerRegClass(MVT VT) const {
42    assert(!"Unimplemented"); return nullptr;
43  }
44
45  virtual unsigned getHWRegIndex(unsigned Reg) const {
46    assert(!"Unimplemented"); return 0;
47  }
48
49  /// \returns the sub reg enum value for the given \p Channel
50  /// (e.g. getSubRegFromChannel(0) -> AMDGPU::sub0)
51  unsigned getSubRegFromChannel(unsigned Channel) const;
52
53  const MCPhysReg* getCalleeSavedRegs(const MachineFunction *MF) const override;
54  void eliminateFrameIndex(MachineBasicBlock::iterator MI, int SPAdj,
55                           unsigned FIOperandNum,
56                           RegScavenger *RS) const override;
57  unsigned getFrameRegister(const MachineFunction &MF) const override;
58
59  unsigned getIndirectSubReg(unsigned IndirectIndex) const;
60
61};
62
63} // End namespace llvm
64
65#endif // AMDIDSAREGISTERINFO_H
66