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
|
//===-- LLVMContext.cpp - Implement LLVMContext -----------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements LLVMContext, as a wrapper around the opaque
// class LLVMContextImpl.
//
//===----------------------------------------------------------------------===//
#include "llvm/LLVMContext.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Instruction.h"
#include "llvm/Metadata.h"
#include "llvm/Support/ManagedStatic.h"
#include "LLVMContextImpl.h"
#include <cstdarg>
using namespace llvm;
static ManagedStatic<LLVMContext> GlobalContext;
LLVMContext& llvm::getGlobalContext() {
return *GlobalContext;
}
LLVMContext::LLVMContext() : pImpl(new LLVMContextImpl(*this)) { }
LLVMContext::~LLVMContext() { delete pImpl; }
// Constant accessors
// Constructor to create a '0' constant of arbitrary type...
static const uint64_t zero[2] = {0, 0};
Constant* LLVMContext::getNullValue(const Type* Ty) {
switch (Ty->getTypeID()) {
case Type::IntegerTyID:
return ConstantInt::get(Ty, 0);
case Type::FloatTyID:
return ConstantFP::get(Ty->getContext(), APFloat(APInt(32, 0)));
case Type::DoubleTyID:
return ConstantFP::get(Ty->getContext(), APFloat(APInt(64, 0)));
case Type::X86_FP80TyID:
return ConstantFP::get(Ty->getContext(), APFloat(APInt(80, 2, zero)));
case Type::FP128TyID:
return ConstantFP::get(Ty->getContext(),
APFloat(APInt(128, 2, zero), true));
case Type::PPC_FP128TyID:
return ConstantFP::get(Ty->getContext(), APFloat(APInt(128, 2, zero)));
case Type::PointerTyID:
return getConstantPointerNull(cast<PointerType>(Ty));
case Type::StructTyID:
case Type::ArrayTyID:
case Type::VectorTyID:
return getConstantAggregateZero(Ty);
default:
// Function, Label, or Opaque type?
assert(!"Cannot create a null constant of that type!");
return 0;
}
}
Constant* LLVMContext::getAllOnesValue(const Type* Ty) {
if (const IntegerType* ITy = dyn_cast<IntegerType>(Ty))
return ConstantInt::get(*this, APInt::getAllOnesValue(ITy->getBitWidth()));
std::vector<Constant*> Elts;
const VectorType* VTy = cast<VectorType>(Ty);
Elts.resize(VTy->getNumElements(), getAllOnesValue(VTy->getElementType()));
assert(Elts[0] && "Not a vector integer type!");
return cast<ConstantVector>(ConstantVector::get(Elts));
}
// UndefValue accessors.
UndefValue* LLVMContext::getUndef(const Type* Ty) {
return UndefValue::get(Ty);
}
// ConstantInt accessors.
ConstantInt* LLVMContext::getTrue() {
assert(this && "Context not initialized!");
assert(pImpl && "Context not initialized!");
return pImpl->getTrue();
}
ConstantInt* LLVMContext::getFalse() {
assert(this && "Context not initialized!");
assert(pImpl && "Context not initialized!");
return pImpl->getFalse();
}
// ConstantPointerNull accessors.
ConstantPointerNull* LLVMContext::getConstantPointerNull(const PointerType* T) {
return ConstantPointerNull::get(T);
}
// ConstantAggregateZero accessors.
ConstantAggregateZero* LLVMContext::getConstantAggregateZero(const Type* Ty) {
return pImpl->getConstantAggregateZero(Ty);
}
// MDNode accessors
MDNode* LLVMContext::getMDNode(Value* const* Vals, unsigned NumVals) {
return pImpl->getMDNode(Vals, NumVals);
}
// MDString accessors
MDString* LLVMContext::getMDString(const StringRef &Str) {
return pImpl->getMDString(Str.data(), Str.size());
}
// FunctionType accessors
FunctionType* LLVMContext::getFunctionType(const Type* Result, bool isVarArg) {
return FunctionType::get(Result, isVarArg);
}
FunctionType* LLVMContext::getFunctionType(const Type* Result,
const std::vector<const Type*>& Params,
bool isVarArg) {
return FunctionType::get(Result, Params, isVarArg);
}
// IntegerType accessors
const IntegerType* LLVMContext::getIntegerType(unsigned NumBits) {
return IntegerType::get(NumBits);
}
// OpaqueType accessors
OpaqueType* LLVMContext::getOpaqueType() {
return OpaqueType::get();
}
// StructType accessors
StructType* LLVMContext::getStructType(bool isPacked) {
return StructType::get(isPacked);
}
StructType* LLVMContext::getStructType(const std::vector<const Type*>& Params,
bool isPacked) {
return StructType::get(Params, isPacked);
}
StructType *LLVMContext::getStructType(const Type *type, ...) {
va_list ap;
std::vector<const llvm::Type*> StructFields;
va_start(ap, type);
while (type) {
StructFields.push_back(type);
type = va_arg(ap, llvm::Type*);
}
return StructType::get(StructFields);
}
// ArrayType accessors
ArrayType* LLVMContext::getArrayType(const Type* ElementType,
uint64_t NumElements) {
return ArrayType::get(ElementType, NumElements);
}
// PointerType accessors
PointerType* LLVMContext::getPointerType(const Type* ElementType,
unsigned AddressSpace) {
return PointerType::get(ElementType, AddressSpace);
}
PointerType* LLVMContext::getPointerTypeUnqual(const Type* ElementType) {
return PointerType::getUnqual(ElementType);
}
// VectorType accessors
VectorType* LLVMContext::getVectorType(const Type* ElementType,
unsigned NumElements) {
return VectorType::get(ElementType, NumElements);
}
VectorType* LLVMContext::getVectorTypeInteger(const VectorType* VTy) {
return VectorType::getInteger(VTy);
}
VectorType* LLVMContext::getVectorTypeExtendedElement(const VectorType* VTy) {
return VectorType::getExtendedElementVectorType(VTy);
}
VectorType* LLVMContext::getVectorTypeTruncatedElement(const VectorType* VTy) {
return VectorType::getTruncatedElementVectorType(VTy);
}
const Type* LLVMContext::makeCmpResultType(const Type* opnd_type) {
if (const VectorType* vt = dyn_cast<const VectorType>(opnd_type)) {
return getVectorType(Type::Int1Ty, vt->getNumElements());
}
return Type::Int1Ty;
}
void LLVMContext::erase(MDString *M) {
pImpl->erase(M);
}
void LLVMContext::erase(MDNode *M) {
pImpl->erase(M);
}
void LLVMContext::erase(ConstantAggregateZero *Z) {
pImpl->erase(Z);
}
|
