-// Get a ConstantInt from an APInt. Note that the value stored in the DenseMap
-// as the key, is a DenseMapAPIntKeyInfo::KeyTy which has provided the
-// operator== and operator!= to ensure that the DenseMap doesn't attempt to
-// compare APInt's of different widths, which would violate an APInt class
-// invariant which generates an assertion.
-ConstantInt *LLVMContextImpl::getConstantInt(const APInt& V) {
- // Get the corresponding integer type for the bit width of the value.
- const IntegerType *ITy = Context.getIntegerType(V.getBitWidth());
- // get an existing value or the insertion position
- DenseMapAPIntKeyInfo::KeyTy Key(V, ITy);
-
- ConstantsLock.reader_acquire();
- ConstantInt *&Slot = IntConstants[Key];
- ConstantsLock.reader_release();
-
- if (!Slot) {
- sys::SmartScopedWriter<true> Writer(ConstantsLock);
- ConstantInt *&NewSlot = IntConstants[Key];
- if (!Slot) {
- NewSlot = new ConstantInt(ITy, V);
- }
-
- return NewSlot;
- } else {
- return Slot;
+LLVMContextImpl::LLVMContextImpl(LLVMContext &C)
+ : TheTrueVal(0), TheFalseVal(0),
+ VoidTy(C, Type::VoidTyID),
+ LabelTy(C, Type::LabelTyID),
+ HalfTy(C, Type::HalfTyID),
+ FloatTy(C, Type::FloatTyID),
+ DoubleTy(C, Type::DoubleTyID),
+ MetadataTy(C, Type::MetadataTyID),
+ X86_FP80Ty(C, Type::X86_FP80TyID),
+ FP128Ty(C, Type::FP128TyID),
+ PPC_FP128Ty(C, Type::PPC_FP128TyID),
+ X86_MMXTy(C, Type::X86_MMXTyID),
+ Int1Ty(C, 1),
+ Int8Ty(C, 8),
+ Int16Ty(C, 16),
+ Int32Ty(C, 32),
+ Int64Ty(C, 64) {
+ InlineAsmDiagHandler = 0;
+ InlineAsmDiagContext = 0;
+ NamedStructTypesUniqueID = 0;
+}
+
+namespace {
+struct DropReferences {
+ // Takes the value_type of a ConstantUniqueMap's internal map, whose 'second'
+ // is a Constant*.
+ template<typename PairT>
+ void operator()(const PairT &P) {
+ P.second->dropAllReferences();