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comparison lib/Target/Mips/MipsMachineFunction.h @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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children 54457678186b
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-1:000000000000 0:95c75e76d11b
1 //===-- MipsMachineFunctionInfo.h - Private data used for Mips ----*- 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 // This file declares the Mips specific subclass of MachineFunctionInfo.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #ifndef MIPS_MACHINE_FUNCTION_INFO_H
15 #define MIPS_MACHINE_FUNCTION_INFO_H
16
17 #include "MipsSubtarget.h"
18 #include "llvm/ADT/StringMap.h"
19 #include "llvm/ADT/ValueMap.h"
20 #include "llvm/CodeGen/MachineFrameInfo.h"
21 #include "llvm/CodeGen/MachineFunction.h"
22 #include "llvm/CodeGen/MachineMemOperand.h"
23 #include "llvm/CodeGen/PseudoSourceValue.h"
24 #include "llvm/IR/GlobalValue.h"
25 #include "llvm/Target/TargetFrameLowering.h"
26 #include "llvm/Target/TargetMachine.h"
27 #include <utility>
28
29 namespace llvm {
30
31 /// \brief A class derived from PseudoSourceValue that represents a GOT entry
32 /// resolved by lazy-binding.
33 class MipsCallEntry : public PseudoSourceValue {
34 public:
35 explicit MipsCallEntry(const StringRef &N);
36 explicit MipsCallEntry(const GlobalValue *V);
37 virtual bool isConstant(const MachineFrameInfo *) const;
38 virtual bool isAliased(const MachineFrameInfo *) const;
39 virtual bool mayAlias(const MachineFrameInfo *) const;
40
41 private:
42 virtual void printCustom(raw_ostream &O) const;
43 #ifndef NDEBUG
44 std::string Name;
45 const GlobalValue *Val;
46 #endif
47 };
48
49 /// MipsFunctionInfo - This class is derived from MachineFunction private
50 /// Mips target-specific information for each MachineFunction.
51 class MipsFunctionInfo : public MachineFunctionInfo {
52 public:
53 MipsFunctionInfo(MachineFunction& MF)
54 : MF(MF), SRetReturnReg(0), GlobalBaseReg(0), Mips16SPAliasReg(0),
55 VarArgsFrameIndex(0), CallsEhReturn(false)
56 {}
57
58 ~MipsFunctionInfo();
59
60 unsigned getSRetReturnReg() const { return SRetReturnReg; }
61 void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
62
63 bool globalBaseRegSet() const;
64 unsigned getGlobalBaseReg();
65
66 bool mips16SPAliasRegSet() const;
67 unsigned getMips16SPAliasReg();
68
69 int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
70 void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
71
72 bool hasByvalArg() const { return HasByvalArg; }
73 void setFormalArgInfo(unsigned Size, bool HasByval) {
74 IncomingArgSize = Size;
75 HasByvalArg = HasByval;
76 }
77
78 unsigned getIncomingArgSize() const { return IncomingArgSize; }
79
80 bool callsEhReturn() const { return CallsEhReturn; }
81 void setCallsEhReturn() { CallsEhReturn = true; }
82
83 void createEhDataRegsFI();
84 int getEhDataRegFI(unsigned Reg) const { return EhDataRegFI[Reg]; }
85 bool isEhDataRegFI(int FI) const;
86
87 /// \brief Create a MachinePointerInfo that has a MipsCallEntr object
88 /// representing a GOT entry for an external function.
89 MachinePointerInfo callPtrInfo(const StringRef &Name);
90
91 /// \brief Create a MachinePointerInfo that has a MipsCallEntr object
92 /// representing a GOT entry for a global function.
93 MachinePointerInfo callPtrInfo(const GlobalValue *Val);
94
95 private:
96 virtual void anchor();
97
98 MachineFunction& MF;
99 /// SRetReturnReg - Some subtargets require that sret lowering includes
100 /// returning the value of the returned struct in a register. This field
101 /// holds the virtual register into which the sret argument is passed.
102 unsigned SRetReturnReg;
103
104 /// GlobalBaseReg - keeps track of the virtual register initialized for
105 /// use as the global base register. This is used for PIC in some PIC
106 /// relocation models.
107 unsigned GlobalBaseReg;
108
109 /// Mips16SPAliasReg - keeps track of the virtual register initialized for
110 /// use as an alias for SP for use in load/store of halfword/byte from/to
111 /// the stack
112 unsigned Mips16SPAliasReg;
113
114 /// VarArgsFrameIndex - FrameIndex for start of varargs area.
115 int VarArgsFrameIndex;
116
117 /// True if function has a byval argument.
118 bool HasByvalArg;
119
120 /// Size of incoming argument area.
121 unsigned IncomingArgSize;
122
123 /// CallsEhReturn - Whether the function calls llvm.eh.return.
124 bool CallsEhReturn;
125
126 /// Frame objects for spilling eh data registers.
127 int EhDataRegFI[4];
128
129 /// MipsCallEntry maps.
130 StringMap<const MipsCallEntry *> ExternalCallEntries;
131 ValueMap<const GlobalValue *, const MipsCallEntry *> GlobalCallEntries;
132 };
133
134 } // end of namespace llvm
135
136 #endif // MIPS_MACHINE_FUNCTION_INFO_H