LLVM  12.0.0git
HexagonMachineFunctionInfo.h
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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 
13 #include <map>
14 
15 namespace llvm {
16 
17 namespace 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.
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 
41 public:
42  HexagonMachineFunctionInfo() = default;
43 
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 
62  PacketInfo[MI] |= Hexagon::StartPacket;
63  }
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
bool isEndPacket(const MachineInstr *MI) const
const unsigned int StartPacket
This class represents lattice values for constants.
Definition: AllocatorList.h:23
unsigned Reg
Hexagon target-specific information for each MachineFunction.
MachineFunctionInfo - This class can be derived from and used by targets to hold private target-speci...
#define H(x, y, z)
Definition: MD5.cpp:58
const unsigned int EndPacket
Representation of each machine instruction.
Definition: MachineInstr.h:62
bool isStartPacket(const MachineInstr *MI) const
IRTranslator LLVM IR MI