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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
//===-- ARMConstantPoolValue.h - ARM constantpool value ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the ARM specific constantpool value class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TARGET_ARM_CONSTANTPOOLVALUE_H
#define LLVM_TARGET_ARM_CONSTANTPOOLVALUE_H
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/Support/ErrorHandling.h"
#include <cstddef>
namespace llvm {
class BlockAddress;
class Constant;
class GlobalValue;
class LLVMContext;
class MachineBasicBlock;
namespace ARMCP {
enum ARMCPKind {
CPValue,
CPExtSymbol,
CPBlockAddress,
CPLSDA,
CPMachineBasicBlock
};
enum ARMCPModifier {
no_modifier,
TLSGD,
GOT,
GOTOFF,
GOTTPOFF,
TPOFF
};
}
/// ARMConstantPoolValue - ARM specific constantpool value. This is used to
/// represent PC-relative displacement between the address of the load
/// instruction and the constant being loaded, i.e. (&GV-(LPIC+8)).
class ARMConstantPoolValue : public MachineConstantPoolValue {
unsigned LabelId; // Label id of the load.
ARMCP::ARMCPKind Kind; // Kind of constant.
unsigned char PCAdjust; // Extra adjustment if constantpool is pc-relative.
// 8 for ARM, 4 for Thumb.
ARMCP::ARMCPModifier Modifier; // GV modifier i.e. (&GV(modifier)-(LPIC+8))
bool AddCurrentAddress;
protected:
ARMConstantPoolValue(Type *Ty, unsigned id, ARMCP::ARMCPKind Kind,
unsigned char PCAdj, ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress);
ARMConstantPoolValue(LLVMContext &C, unsigned id, ARMCP::ARMCPKind Kind,
unsigned char PCAdj, ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress);
public:
virtual ~ARMConstantPoolValue();
ARMCP::ARMCPModifier getModifier() const { return Modifier; }
const char *getModifierText() const;
bool hasModifier() const { return Modifier != ARMCP::no_modifier; }
bool mustAddCurrentAddress() const { return AddCurrentAddress; }
unsigned getLabelId() const { return LabelId; }
unsigned char getPCAdjustment() const { return PCAdjust; }
bool isGlobalValue() const { return Kind == ARMCP::CPValue; }
bool isExtSymbol() const { return Kind == ARMCP::CPExtSymbol; }
bool isBlockAddress() const { return Kind == ARMCP::CPBlockAddress; }
bool isLSDA() const { return Kind == ARMCP::CPLSDA; }
bool isMachineBasicBlock() const{ return Kind == ARMCP::CPMachineBasicBlock; }
virtual unsigned getRelocationInfo() const { return 2; }
virtual int getExistingMachineCPValue(MachineConstantPool *CP,
unsigned Alignment);
virtual void addSelectionDAGCSEId(FoldingSetNodeID &ID);
/// hasSameValue - Return true if this ARM constpool value can share the same
/// constantpool entry as another ARM constpool value.
virtual bool hasSameValue(ARMConstantPoolValue *ACPV);
bool equals(const ARMConstantPoolValue *A) const {
return this->LabelId == A->LabelId &&
this->PCAdjust == A->PCAdjust &&
this->Modifier == A->Modifier;
}
virtual void print(raw_ostream &O) const;
void print(raw_ostream *O) const { if (O) print(*O); }
void dump() const;
};
inline raw_ostream &operator<<(raw_ostream &O, const ARMConstantPoolValue &V) {
V.print(O);
return O;
}
/// ARMConstantPoolConstant - ARM-specific constant pool values for Constants,
/// Functions, and BlockAddresses.
class ARMConstantPoolConstant : public ARMConstantPoolValue {
const Constant *CVal; // Constant being loaded.
ARMConstantPoolConstant(const Constant *C,
unsigned ID,
ARMCP::ARMCPKind Kind,
unsigned char PCAdj,
ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress);
ARMConstantPoolConstant(Type *Ty, const Constant *C,
unsigned ID,
ARMCP::ARMCPKind Kind,
unsigned char PCAdj,
ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress);
public:
static ARMConstantPoolConstant *Create(const Constant *C, unsigned ID);
static ARMConstantPoolConstant *Create(const GlobalValue *GV,
ARMCP::ARMCPModifier Modifier);
static ARMConstantPoolConstant *Create(const Constant *C, unsigned ID,
ARMCP::ARMCPKind Kind,
unsigned char PCAdj);
static ARMConstantPoolConstant *Create(const Constant *C, unsigned ID,
ARMCP::ARMCPKind Kind,
unsigned char PCAdj,
ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress);
const GlobalValue *getGV() const;
const BlockAddress *getBlockAddress() const;
virtual int getExistingMachineCPValue(MachineConstantPool *CP,
unsigned Alignment);
/// hasSameValue - Return true if this ARM constpool value can share the same
/// constantpool entry as another ARM constpool value.
virtual bool hasSameValue(ARMConstantPoolValue *ACPV);
virtual void addSelectionDAGCSEId(FoldingSetNodeID &ID);
virtual void print(raw_ostream &O) const;
static bool classof(const ARMConstantPoolValue *APV) {
return APV->isGlobalValue() || APV->isBlockAddress() || APV->isLSDA();
}
};
/// ARMConstantPoolSymbol - ARM-specific constantpool values for external
/// symbols.
class ARMConstantPoolSymbol : public ARMConstantPoolValue {
const std::string S; // ExtSymbol being loaded.
ARMConstantPoolSymbol(LLVMContext &C, const char *s, unsigned id,
unsigned char PCAdj, ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress);
public:
static ARMConstantPoolSymbol *Create(LLVMContext &C, const char *s,
unsigned ID, unsigned char PCAdj);
const char *getSymbol() const { return S.c_str(); }
virtual int getExistingMachineCPValue(MachineConstantPool *CP,
unsigned Alignment);
virtual void addSelectionDAGCSEId(FoldingSetNodeID &ID);
/// hasSameValue - Return true if this ARM constpool value can share the same
/// constantpool entry as another ARM constpool value.
virtual bool hasSameValue(ARMConstantPoolValue *ACPV);
virtual void print(raw_ostream &O) const;
static bool classof(const ARMConstantPoolValue *ACPV) {
return ACPV->isExtSymbol();
}
};
/// ARMConstantPoolMBB - ARM-specific constantpool value of a machine basic
/// block.
class ARMConstantPoolMBB : public ARMConstantPoolValue {
const MachineBasicBlock *MBB; // Machine basic block.
ARMConstantPoolMBB(LLVMContext &C, const MachineBasicBlock *mbb, unsigned id,
unsigned char PCAdj, ARMCP::ARMCPModifier Modifier,
bool AddCurrentAddress);
public:
static ARMConstantPoolMBB *Create(LLVMContext &C,
const MachineBasicBlock *mbb,
unsigned ID, unsigned char PCAdj);
const MachineBasicBlock *getMBB() const { return MBB; }
virtual int getExistingMachineCPValue(MachineConstantPool *CP,
unsigned Alignment);
virtual void addSelectionDAGCSEId(FoldingSetNodeID &ID);
/// hasSameValue - Return true if this ARM constpool value can share the same
/// constantpool entry as another ARM constpool value.
virtual bool hasSameValue(ARMConstantPoolValue *ACPV);
virtual void print(raw_ostream &O) const;
static bool classof(const ARMConstantPoolValue *ACPV) {
return ACPV->isMachineBasicBlock();
}
};
} // End llvm namespace
#endif
|
