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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
//===-- CodeGen/MachineInstBuilder.h - Simplify creation of MIs -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file exposes a function named BuildMI, which is useful for dramatically
// simplifying how MachineInstr's are created. It allows use of code like this:
//
// M = BuildMI(X86::ADDrr8, 2).addReg(argVal1).addReg(argVal2);
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_MACHINEINSTRBUILDER_H
#define LLVM_CODEGEN_MACHINEINSTRBUILDER_H
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
namespace llvm {
class TargetInstrDescriptor;
class MachineInstrBuilder {
MachineInstr *MI;
public:
explicit MachineInstrBuilder(MachineInstr *mi) : MI(mi) {}
/// Allow automatic conversion to the machine instruction we are working on.
///
operator MachineInstr*() const { return MI; }
operator MachineBasicBlock::iterator() const { return MI; }
/// addReg - Add a new virtual register operand...
///
const
MachineInstrBuilder &addReg(unsigned RegNo, bool isDef = false,
bool isImp = false, bool isKill = false,
bool isDead = false) const {
MI->addRegOperand(RegNo, isDef, isImp, isKill, isDead);
return *this;
}
/// addImm - Add a new immediate operand.
///
const MachineInstrBuilder &addImm(int64_t Val) const {
MI->addImmOperand(Val);
return *this;
}
const MachineInstrBuilder &addMBB(MachineBasicBlock *MBB) const {
MI->addMachineBasicBlockOperand(MBB);
return *this;
}
const MachineInstrBuilder &addFrameIndex(unsigned Idx) const {
MI->addFrameIndexOperand(Idx);
return *this;
}
const MachineInstrBuilder &addConstantPoolIndex(unsigned Idx,
int Offset = 0) const {
MI->addConstantPoolIndexOperand(Idx, Offset);
return *this;
}
const MachineInstrBuilder &addJumpTableIndex(unsigned Idx) const {
MI->addJumpTableIndexOperand(Idx);
return *this;
}
const MachineInstrBuilder &addGlobalAddress(GlobalValue *GV,
int Offset = 0) const {
MI->addGlobalAddressOperand(GV, Offset);
return *this;
}
const MachineInstrBuilder &addExternalSymbol(const char *FnName) const{
MI->addExternalSymbolOperand(FnName);
return *this;
}
};
/// BuildMI - Builder interface. Specify how to create the initial instruction
/// itself.
///
inline MachineInstrBuilder BuildMI(const TargetInstrDescriptor &TID) {
return MachineInstrBuilder(new MachineInstr(TID));
}
/// BuildMI - This version of the builder sets up the first operand as a
/// destination virtual register.
///
inline MachineInstrBuilder BuildMI(const TargetInstrDescriptor &TID,
unsigned DestReg) {
return MachineInstrBuilder(new MachineInstr(TID)).addReg(DestReg, true);
}
/// BuildMI - This version of the builder inserts the newly-built
/// instruction before the given position in the given MachineBasicBlock, and
/// sets up the first operand as a destination virtual register.
///
inline MachineInstrBuilder BuildMI(MachineBasicBlock &BB,
MachineBasicBlock::iterator I,
const TargetInstrDescriptor &TID,
unsigned DestReg) {
MachineInstr *MI = new MachineInstr(TID);
BB.insert(I, MI);
return MachineInstrBuilder(MI).addReg(DestReg, true);
}
/// BuildMI - This version of the builder inserts the newly-built
/// instruction before the given position in the given MachineBasicBlock, and
/// does NOT take a destination register.
///
inline MachineInstrBuilder BuildMI(MachineBasicBlock &BB,
MachineBasicBlock::iterator I,
const TargetInstrDescriptor &TID) {
MachineInstr *MI = new MachineInstr(TID);
BB.insert(I, MI);
return MachineInstrBuilder(MI);
}
/// BuildMI - This version of the builder inserts the newly-built
/// instruction at the end of the given MachineBasicBlock, and does NOT take a
/// destination register.
///
inline MachineInstrBuilder BuildMI(MachineBasicBlock *BB,
const TargetInstrDescriptor &TID) {
return BuildMI(*BB, BB->end(), TID);
}
/// BuildMI - This version of the builder inserts the newly-built
/// instruction at the end of the given MachineBasicBlock, and sets up the first
/// operand as a destination virtual register.
///
inline MachineInstrBuilder BuildMI(MachineBasicBlock *BB,
const TargetInstrDescriptor &TID,
unsigned DestReg) {
return BuildMI(*BB, BB->end(), TID, DestReg);
}
} // End llvm namespace
#endif
|