1 //===-- LLVMContextImpl.cpp - Implement LLVMContextImpl -------------------===//
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 implements the opaque LLVMContextImpl.
12 //===----------------------------------------------------------------------===//
14 #include "LLVMContextImpl.h"
15 #include "llvm/ADT/STLExtras.h"
16 #include "llvm/IR/Attributes.h"
17 #include "llvm/IR/DiagnosticInfo.h"
18 #include "llvm/IR/Module.h"
22 LLVMContextImpl::LLVMContextImpl(LLVMContext &C)
23 : TheTrueVal(nullptr), TheFalseVal(nullptr),
24 VoidTy(C, Type::VoidTyID),
25 LabelTy(C, Type::LabelTyID),
26 HalfTy(C, Type::HalfTyID),
27 FloatTy(C, Type::FloatTyID),
28 DoubleTy(C, Type::DoubleTyID),
29 MetadataTy(C, Type::MetadataTyID),
30 X86_FP80Ty(C, Type::X86_FP80TyID),
31 FP128Ty(C, Type::FP128TyID),
32 PPC_FP128Ty(C, Type::PPC_FP128TyID),
33 X86_MMXTy(C, Type::X86_MMXTyID),
39 InlineAsmDiagHandler = nullptr;
40 InlineAsmDiagContext = nullptr;
41 DiagnosticHandler = nullptr;
42 DiagnosticContext = nullptr;
43 RespectDiagnosticFilters = false;
44 YieldCallback = nullptr;
45 YieldOpaqueHandle = nullptr;
46 NamedStructTypesUniqueID = 0;
50 struct DropReferences {
51 // Takes the value_type of a ConstantUniqueMap's internal map, whose 'second'
53 template <typename PairT> void operator()(const PairT &P) {
54 P.second->dropAllReferences();
58 // Temporary - drops pair.first instead of second.
60 // Takes the value_type of a ConstantUniqueMap's internal map, whose 'second'
62 template<typename PairT>
63 void operator()(const PairT &P) {
64 P.first->dropAllReferences();
69 LLVMContextImpl::~LLVMContextImpl() {
70 // NOTE: We need to delete the contents of OwnedModules, but Module's dtor
71 // will call LLVMContextImpl::removeModule, thus invalidating iterators into
72 // the container. Avoid iterators during this operation:
73 while (!OwnedModules.empty())
74 delete *OwnedModules.begin();
76 // Drop references for MDNodes. Do this before Values get deleted to avoid
77 // unnecessary RAUW when nodes are still unresolved.
78 for (auto *I : DistinctMDNodes)
79 I->dropAllReferences();
80 for (auto *I : MDTuples)
81 I->dropAllReferences();
82 for (auto *I : MDLocations)
83 I->dropAllReferences();
85 // Also drop references that come from the Value bridges.
86 for (auto &Pair : ValuesAsMetadata)
87 Pair.second->dropUsers();
88 for (auto &Pair : MetadataAsValues)
89 Pair.second->dropUse();
92 for (UniquableMDNode *I : DistinctMDNodes)
93 I->deleteAsSubclass();
94 for (MDTuple *I : MDTuples)
96 for (MDLocation *I : MDLocations)
99 // Free the constants. This is important to do here to ensure that they are
100 // freed before the LeakDetector is torn down.
101 std::for_each(ExprConstants.map_begin(), ExprConstants.map_end(),
103 std::for_each(ArrayConstants.map_begin(), ArrayConstants.map_end(),
105 std::for_each(StructConstants.map_begin(), StructConstants.map_end(),
107 std::for_each(VectorConstants.map_begin(), VectorConstants.map_end(),
109 ExprConstants.freeConstants();
110 ArrayConstants.freeConstants();
111 StructConstants.freeConstants();
112 VectorConstants.freeConstants();
113 DeleteContainerSeconds(CAZConstants);
114 DeleteContainerSeconds(CPNConstants);
115 DeleteContainerSeconds(UVConstants);
116 InlineAsms.freeConstants();
117 DeleteContainerSeconds(IntConstants);
118 DeleteContainerSeconds(FPConstants);
120 for (StringMap<ConstantDataSequential*>::iterator I = CDSConstants.begin(),
121 E = CDSConstants.end(); I != E; ++I)
123 CDSConstants.clear();
125 // Destroy attributes.
126 for (FoldingSetIterator<AttributeImpl> I = AttrsSet.begin(),
127 E = AttrsSet.end(); I != E; ) {
128 FoldingSetIterator<AttributeImpl> Elem = I++;
132 // Destroy attribute lists.
133 for (FoldingSetIterator<AttributeSetImpl> I = AttrsLists.begin(),
134 E = AttrsLists.end(); I != E; ) {
135 FoldingSetIterator<AttributeSetImpl> Elem = I++;
139 // Destroy attribute node lists.
140 for (FoldingSetIterator<AttributeSetNode> I = AttrsSetNodes.begin(),
141 E = AttrsSetNodes.end(); I != E; ) {
142 FoldingSetIterator<AttributeSetNode> Elem = I++;
146 // Destroy MetadataAsValues.
148 SmallVector<MetadataAsValue *, 8> MDVs;
149 MDVs.reserve(MetadataAsValues.size());
150 for (auto &Pair : MetadataAsValues)
151 MDVs.push_back(Pair.second);
152 MetadataAsValues.clear();
157 // Destroy ValuesAsMetadata.
158 for (auto &Pair : ValuesAsMetadata)
161 // Destroy MDStrings.
162 MDStringCache.clear();
165 // ConstantsContext anchors
166 void UnaryConstantExpr::anchor() { }
168 void BinaryConstantExpr::anchor() { }
170 void SelectConstantExpr::anchor() { }
172 void ExtractElementConstantExpr::anchor() { }
174 void InsertElementConstantExpr::anchor() { }
176 void ShuffleVectorConstantExpr::anchor() { }
178 void ExtractValueConstantExpr::anchor() { }
180 void InsertValueConstantExpr::anchor() { }
182 void GetElementPtrConstantExpr::anchor() { }
184 void CompareConstantExpr::anchor() { }