1//=- HexagonMachineFunctionInfo.h - Hexagon machine function info -*- 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#ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGONMACHINEFUNCTIONINFO_H
10#define LLVM_LIB_TARGET_HEXAGON_HEXAGONMACHINEFUNCTIONINFO_H
11
12#include "llvm/CodeGen/MachineFunction.h"
13#include <map>
14
15namespace llvm {
16
17namespace Hexagon {
18
19    const unsigned int StartPacket = 0x1;
20    const unsigned int EndPacket = 0x2;
21
22} // end namespace Hexagon
23
24/// Hexagon target-specific information for each MachineFunction.
25class HexagonMachineFunctionInfo : public MachineFunctionInfo {
26  // SRetReturnReg - Some subtargets require that sret lowering includes
27  // returning the value of the returned struct in a register. This field
28  // holds the virtual register into which the sret argument is passed.
29  unsigned SRetReturnReg = 0;
30  unsigned StackAlignBaseVReg = 0;    // Aligned-stack base register (virtual)
31  unsigned StackAlignBasePhysReg = 0; //                             (physical)
32  int VarArgsFrameIndex;
33  int RegSavedAreaStartFrameIndex;
34  int FirstNamedArgFrameIndex;
35  int LastNamedArgFrameIndex;
36  bool HasClobberLR = false;
37  bool HasEHReturn = false;
38  std::map<const MachineInstr*, unsigned> PacketInfo;
39  virtual void anchor();
40
41public:
42  HexagonMachineFunctionInfo() = default;
43
44  HexagonMachineFunctionInfo(MachineFunction &MF) {}
45
46  unsigned getSRetReturnReg() const { return SRetReturnReg; }
47  void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
48
49  void setVarArgsFrameIndex(int v) { VarArgsFrameIndex = v; }
50  int getVarArgsFrameIndex() { return VarArgsFrameIndex; }
51
52  void setRegSavedAreaStartFrameIndex(int v) { RegSavedAreaStartFrameIndex = v;}
53  int getRegSavedAreaStartFrameIndex() { return RegSavedAreaStartFrameIndex; }
54
55  void setFirstNamedArgFrameIndex(int v) { FirstNamedArgFrameIndex = v; }
56  int getFirstNamedArgFrameIndex() { return FirstNamedArgFrameIndex; }
57
58  void setLastNamedArgFrameIndex(int v) { LastNamedArgFrameIndex = v; }
59  int getLastNamedArgFrameIndex() { return LastNamedArgFrameIndex; }
60
61  void setStartPacket(MachineInstr* MI) {
62    PacketInfo[MI] |= Hexagon::StartPacket;
63  }
64  void setEndPacket(MachineInstr* MI)   {
65    PacketInfo[MI] |= Hexagon::EndPacket;
66  }
67  bool isStartPacket(const MachineInstr* MI) const {
68    return (PacketInfo.count(MI) &&
69            (PacketInfo.find(MI)->second & Hexagon::StartPacket));
70  }
71  bool isEndPacket(const MachineInstr* MI) const {
72    return (PacketInfo.count(MI) &&
73            (PacketInfo.find(MI)->second & Hexagon::EndPacket));
74  }
75  void setHasClobberLR(bool v) { HasClobberLR = v;  }
76  bool hasClobberLR() const { return HasClobberLR; }
77
78  bool hasEHReturn() const { return HasEHReturn; };
79  void setHasEHReturn(bool H = true) { HasEHReturn = H; };
80
81  void setStackAlignBaseVReg(unsigned R) { StackAlignBaseVReg = R; }
82  unsigned getStackAlignBaseVReg() const { return StackAlignBaseVReg; }
83
84  void setStackAlignBasePhysReg(unsigned R) { StackAlignBasePhysReg = R; }
85  unsigned getStackAlignBasePhysReg() const { return StackAlignBasePhysReg; }
86};
87
88} // end namespace llvm
89
90#endif // LLVM_LIB_TARGET_HEXAGON_HEXAGONMACHINEFUNCTIONINFO_H
91