1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
//===- MipsMachineFunctionInfo.h - Private data used for Mips ---*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file declares the Mips specific subclass of MachineFunctionInfo.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_MIPS_MIPSMACHINEFUNCTION_H
#define LLVM_LIB_TARGET_MIPS_MIPSMACHINEFUNCTION_H
#include "Mips16HardFloatInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineMemOperand.h"
#include <map>
namespace llvm {
/// MipsFunctionInfo - This class is derived from MachineFunction private
/// Mips target-specific information for each MachineFunction.
class MipsFunctionInfo : public MachineFunctionInfo {
public:
MipsFunctionInfo(const Function &F, const TargetSubtargetInfo *STI) {}
MachineFunctionInfo *
clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
const override;
~MipsFunctionInfo() override;
unsigned getSRetReturnReg() const { return SRetReturnReg; }
void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
bool globalBaseRegSet() const;
Register getGlobalBaseReg(MachineFunction &MF);
Register getGlobalBaseRegForGlobalISel(MachineFunction &MF);
// Insert instructions to initialize the global base register in the
// first MBB of the function.
void initGlobalBaseReg(MachineFunction &MF);
int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
bool hasByvalArg() const { return HasByvalArg; }
void setFormalArgInfo(unsigned Size, bool HasByval) {
IncomingArgSize = Size;
HasByvalArg = HasByval;
}
unsigned getIncomingArgSize() const { return IncomingArgSize; }
bool callsEhReturn() const { return CallsEhReturn; }
void setCallsEhReturn() { CallsEhReturn = true; }
void createEhDataRegsFI(MachineFunction &MF);
int getEhDataRegFI(unsigned Reg) const { return EhDataRegFI[Reg]; }
bool isEhDataRegFI(int FI) const;
/// Create a MachinePointerInfo that has an ExternalSymbolPseudoSourceValue
/// object representing a GOT entry for an external function.
MachinePointerInfo callPtrInfo(MachineFunction &MF, const char *ES);
// Functions with the "interrupt" attribute require special prologues,
// epilogues and additional spill slots.
bool isISR() const { return IsISR; }
void setISR() { IsISR = true; }
void createISRRegFI(MachineFunction &MF);
int getISRRegFI(Register Reg) const { return ISRDataRegFI[Reg]; }
bool isISRRegFI(int FI) const;
/// Create a MachinePointerInfo that has a GlobalValuePseudoSourceValue object
/// representing a GOT entry for a global function.
MachinePointerInfo callPtrInfo(MachineFunction &MF, const GlobalValue *GV);
void setSaveS2() { SaveS2 = true; }
bool hasSaveS2() const { return SaveS2; }
int getMoveF64ViaSpillFI(MachineFunction &MF, const TargetRegisterClass *RC);
std::map<const char *, const Mips16HardFloatInfo::FuncSignature *>
StubsNeeded;
private:
virtual void anchor();
/// SRetReturnReg - Some subtargets require that sret lowering includes
/// returning the value of the returned struct in a register. This field
/// holds the virtual register into which the sret argument is passed.
Register SRetReturnReg;
/// GlobalBaseReg - keeps track of the virtual register initialized for
/// use as the global base register. This is used for PIC in some PIC
/// relocation models.
Register GlobalBaseReg;
/// VarArgsFrameIndex - FrameIndex for start of varargs area.
int VarArgsFrameIndex = 0;
/// True if function has a byval argument.
bool HasByvalArg;
/// Size of incoming argument area.
unsigned IncomingArgSize;
/// CallsEhReturn - Whether the function calls llvm.eh.return.
bool CallsEhReturn = false;
/// Frame objects for spilling eh data registers.
int EhDataRegFI[4];
/// ISR - Whether the function is an Interrupt Service Routine.
bool IsISR = false;
/// Frame objects for spilling C0_STATUS, C0_EPC
int ISRDataRegFI[2];
// saveS2
bool SaveS2 = false;
/// FrameIndex for expanding BuildPairF64 nodes to spill and reload when the
/// O32 FPXX ABI is enabled. -1 is used to denote invalid index.
int MoveF64ViaSpillFI = -1;
};
} // end namespace llvm
#endif // LLVM_LIB_TARGET_MIPS_MIPSMACHINEFUNCTION_H
|
