1 //===----------------- LLVMContextImpl.h - Implementation ------*- C++ -*--===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares LLVMContextImpl, the opaque implementation
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_LLVMCONTEXT_IMPL_H
16 #define LLVM_LLVMCONTEXT_IMPL_H
18 #include "ConstantsContext.h"
19 #include "TypesContext.h"
20 #include "llvm/LLVMContext.h"
21 #include "llvm/Constants.h"
22 #include "llvm/DerivedTypes.h"
23 #include "llvm/System/RWMutex.h"
24 #include "llvm/ADT/APFloat.h"
25 #include "llvm/ADT/APInt.h"
26 #include "llvm/ADT/DenseMap.h"
27 #include "llvm/ADT/FoldingSet.h"
28 #include "llvm/ADT/StringMap.h"
41 struct DenseMapAPIntKeyInfo {
45 KeyTy(const APInt& V, const Type* Ty) : val(V), type(Ty) {}
46 KeyTy(const KeyTy& that) : val(that.val), type(that.type) {}
47 bool operator==(const KeyTy& that) const {
48 return type == that.type && this->val == that.val;
50 bool operator!=(const KeyTy& that) const {
51 return !this->operator==(that);
54 static inline KeyTy getEmptyKey() { return KeyTy(APInt(1,0), 0); }
55 static inline KeyTy getTombstoneKey() { return KeyTy(APInt(1,1), 0); }
56 static unsigned getHashValue(const KeyTy &Key) {
57 return DenseMapInfo<void*>::getHashValue(Key.type) ^
58 Key.val.getHashValue();
60 static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
63 static bool isPod() { return false; }
66 struct DenseMapAPFloatKeyInfo {
69 KeyTy(const APFloat& V) : val(V){}
70 KeyTy(const KeyTy& that) : val(that.val) {}
71 bool operator==(const KeyTy& that) const {
72 return this->val.bitwiseIsEqual(that.val);
74 bool operator!=(const KeyTy& that) const {
75 return !this->operator==(that);
78 static inline KeyTy getEmptyKey() {
79 return KeyTy(APFloat(APFloat::Bogus,1));
81 static inline KeyTy getTombstoneKey() {
82 return KeyTy(APFloat(APFloat::Bogus,2));
84 static unsigned getHashValue(const KeyTy &Key) {
85 return Key.val.getHashValue();
87 static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
90 static bool isPod() { return false; }
93 class LLVMContextImpl {
95 sys::SmartRWMutex<true> ConstantsLock;
97 typedef DenseMap<DenseMapAPIntKeyInfo::KeyTy, ConstantInt*,
98 DenseMapAPIntKeyInfo> IntMapTy;
99 IntMapTy IntConstants;
101 typedef DenseMap<DenseMapAPFloatKeyInfo::KeyTy, ConstantFP*,
102 DenseMapAPFloatKeyInfo> FPMapTy;
105 StringMap<MDString*> MDStringCache;
107 ValueMap<char, Type, ConstantAggregateZero> AggZeroConstants;
109 typedef ValueMap<std::vector<Value*>, Type, MDNode, true /*largekey*/>
114 typedef ValueMap<std::vector<Constant*>, ArrayType,
115 ConstantArray, true /*largekey*/> ArrayConstantsTy;
116 ArrayConstantsTy ArrayConstants;
118 typedef ValueMap<std::vector<Constant*>, StructType,
119 ConstantStruct, true /*largekey*/> StructConstantsTy;
120 StructConstantsTy StructConstants;
122 typedef ValueMap<std::vector<Constant*>, VectorType,
123 ConstantVector> VectorConstantsTy;
124 VectorConstantsTy VectorConstants;
126 ValueMap<char, PointerType, ConstantPointerNull> NullPtrConstants;
128 ValueMap<char, Type, UndefValue> UndefValueConstants;
130 ValueMap<ExprMapKeyType, Type, ConstantExpr> ExprConstants;
132 ConstantInt *TheTrueVal;
133 ConstantInt *TheFalseVal;
135 TypeMap<ArrayValType, ArrayType> ArrayTypes;
136 TypeMap<VectorValType, VectorType> VectorTypes;
137 TypeMap<PointerValType, PointerType> PointerTypes;
138 TypeMap<FunctionValType, FunctionType> FunctionTypes;
139 TypeMap<StructValType, StructType> StructTypes;
140 TypeMap<IntegerValType, IntegerType> IntegerTypes;
145 const Type *DoubleTy;
146 const Type *MetadataTy;
147 const Type *X86_FP80Ty;
149 const Type *PPC_FP128Ty;
151 const IntegerType *Int1Ty;
152 const IntegerType *Int8Ty;
153 const IntegerType *Int16Ty;
154 const IntegerType *Int32Ty;
155 const IntegerType *Int64Ty;
157 LLVMContextImpl(LLVMContext &C) : TheTrueVal(0), TheFalseVal(0),
158 VoidTy(new Type(C, Type::VoidTyID)),
159 LabelTy(new Type(C, Type::LabelTyID)),
160 FloatTy(new Type(C, Type::FloatTyID)),
161 DoubleTy(new Type(C, Type::DoubleTyID)),
162 MetadataTy(new Type(C, Type::MetadataTyID)),
163 X86_FP80Ty(new Type(C, Type::X86_FP80TyID)),
164 FP128Ty(new Type(C, Type::FP128TyID)),
165 PPC_FP128Ty(new Type(C, Type::PPC_FP128TyID)),
166 Int1Ty(new IntegerType(C, 1)),
167 Int8Ty(new IntegerType(C, 8)),
168 Int16Ty(new IntegerType(C, 16)),
169 Int32Ty(new IntegerType(C, 32)),
170 Int64Ty(new IntegerType(C, 64)) { }
173 // In principle, we should delete the member types here. However,
174 // this causes destruction order issues with the types in the TypeMaps.
175 // For now, just leak this, which is at least not a regression from the
176 // previous behavior, though still undesirable.