-//===--------------- LLVMContextImpl.cpp - Implementation ------*- C++ -*--===//
+//===-- LLVMContextImpl.cpp - Implement LLVMContextImpl -------------------===//
//
// The LLVM Compiler Infrastructure
//
//
//===----------------------------------------------------------------------===//
//
-// This file implements LLVMContextImpl, the opaque implementation
-// of LLVMContext.
+// This file implements the opaque LLVMContextImpl.
//
//===----------------------------------------------------------------------===//
#include "LLVMContextImpl.h"
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/LLVMContext.h"
-#include "llvm/MDNode.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/Attributes.h"
+#include "llvm/Module.h"
+#include <algorithm>
using namespace llvm;
-static char getValType(ConstantAggregateZero *CPZ) { return 0; }
-
-LLVMContextImpl::LLVMContextImpl(LLVMContext &C) :
- Context(C), TheTrueVal(0), TheFalseVal(0) { }
+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;
+}
-MDString *LLVMContextImpl::getMDString(const char *StrBegin,
- unsigned StrLength) {
- sys::SmartScopedWriter<true> Writer(ConstantsLock);
- StringMapEntry<MDString *> &Entry =
- MDStringCache.GetOrCreateValue(StringRef(StrBegin, StrLength));
- MDString *&S = Entry.getValue();
- if (!S) S = new MDString(Entry.getKeyData(),
- Entry.getKeyLength());
+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();
+ }
+};
- return S;
+// Temporary - drops pair.first instead of second.
+struct DropFirst {
+ // Takes the value_type of a ConstantUniqueMap's internal map, whose 'second'
+ // is a Constant*.
+ template<typename PairT>
+ void operator()(const PairT &P) {
+ P.first->dropAllReferences();
+ }
+};
}
-MDNode *LLVMContextImpl::getMDNode(Value*const* Vals, unsigned NumVals) {
- FoldingSetNodeID ID;
- for (unsigned i = 0; i != NumVals; ++i)
- ID.AddPointer(Vals[i]);
-
- ConstantsLock.reader_acquire();
- void *InsertPoint;
- MDNode *N = MDNodeSet.FindNodeOrInsertPos(ID, InsertPoint);
- ConstantsLock.reader_release();
+LLVMContextImpl::~LLVMContextImpl() {
+ // NOTE: We need to delete the contents of OwnedModules, but we have to
+ // duplicate it into a temporary vector, because the destructor of Module
+ // will try to remove itself from OwnedModules set. This would cause
+ // iterator invalidation if we iterated on the set directly.
+ std::vector<Module*> Modules(OwnedModules.begin(), OwnedModules.end());
+ DeleteContainerPointers(Modules);
- if (!N) {
- sys::SmartScopedWriter<true> Writer(ConstantsLock);
- N = MDNodeSet.FindNodeOrInsertPos(ID, InsertPoint);
- if (!N) {
- // InsertPoint will have been set by the FindNodeOrInsertPos call.
- N = new MDNode(Vals, NumVals);
- MDNodeSet.InsertNode(N, InsertPoint);
- }
+ // Free the constants. This is important to do here to ensure that they are
+ // freed before the LeakDetector is torn down.
+ std::for_each(ExprConstants.map_begin(), ExprConstants.map_end(),
+ DropReferences());
+ std::for_each(ArrayConstants.map_begin(), ArrayConstants.map_end(),
+ DropFirst());
+ std::for_each(StructConstants.map_begin(), StructConstants.map_end(),
+ DropFirst());
+ std::for_each(VectorConstants.map_begin(), VectorConstants.map_end(),
+ DropFirst());
+ ExprConstants.freeConstants();
+ ArrayConstants.freeConstants();
+ StructConstants.freeConstants();
+ VectorConstants.freeConstants();
+ DeleteContainerSeconds(CAZConstants);
+ DeleteContainerSeconds(CPNConstants);
+ DeleteContainerSeconds(UVConstants);
+ InlineAsms.freeConstants();
+ DeleteContainerSeconds(IntConstants);
+ DeleteContainerSeconds(FPConstants);
+
+ for (StringMap<ConstantDataSequential*>::iterator I = CDSConstants.begin(),
+ E = CDSConstants.end(); I != E; ++I)
+ delete I->second;
+ CDSConstants.clear();
+
+ // Destroy attributes.
+ for (FoldingSetIterator<AttributesImpl> I = AttrsSet.begin(),
+ E = AttrsSet.end(); I != E; ) {
+ FoldingSetIterator<AttributesImpl> Elem = I++;
+ delete &*Elem;
}
- return N;
-}
+ // Destroy attribute lists.
+ for (FoldingSetIterator<AttributeListImpl> I = AttrsLists.begin(),
+ E = AttrsLists.end(); I != E; ) {
+ FoldingSetIterator<AttributeListImpl> Elem = I++;
+ delete &*Elem;
+ }
-ConstantAggregateZero*
-LLVMContextImpl::getConstantAggregateZero(const Type *Ty) {
- assert((isa<StructType>(Ty) || isa<ArrayType>(Ty) || isa<VectorType>(Ty)) &&
- "Cannot create an aggregate zero of non-aggregate type!");
+ // Destroy MDNodes. ~MDNode can move and remove nodes between the MDNodeSet
+ // and the NonUniquedMDNodes sets, so copy the values out first.
+ SmallVector<MDNode*, 8> MDNodes;
+ MDNodes.reserve(MDNodeSet.size() + NonUniquedMDNodes.size());
+ for (FoldingSetIterator<MDNode> I = MDNodeSet.begin(), E = MDNodeSet.end();
+ I != E; ++I)
+ MDNodes.push_back(&*I);
+ MDNodes.append(NonUniquedMDNodes.begin(), NonUniquedMDNodes.end());
+ for (SmallVectorImpl<MDNode *>::iterator I = MDNodes.begin(),
+ E = MDNodes.end(); I != E; ++I)
+ (*I)->destroy();
+ assert(MDNodeSet.empty() && NonUniquedMDNodes.empty() &&
+ "Destroying all MDNodes didn't empty the Context's sets.");
- // Implicitly locked.
- return AggZeroConstants.getOrCreate(Ty, 0);
+ // Destroy MDStrings.
+ DeleteContainerSeconds(MDStringCache);
}
-// *** erase methods ***
+// ConstantsContext anchors
+void UnaryConstantExpr::anchor() { }
-void LLVMContextImpl::erase(MDString *M) {
- sys::SmartScopedWriter<true> Writer(ConstantsLock);
- MDStringCache.erase(MDStringCache.find(M->getString()));
-}
+void BinaryConstantExpr::anchor() { }
-void LLVMContextImpl::erase(MDNode *M) {
- sys::SmartScopedWriter<true> Writer(ConstantsLock);
- MDNodeSet.RemoveNode(M);
-}
+void SelectConstantExpr::anchor() { }
-void LLVMContextImpl::erase(ConstantAggregateZero *Z) {
- AggZeroConstants.remove(Z);
-}
+void ExtractElementConstantExpr::anchor() { }
+
+void InsertElementConstantExpr::anchor() { }
+
+void ShuffleVectorConstantExpr::anchor() { }
+
+void ExtractValueConstantExpr::anchor() { }
+
+void InsertValueConstantExpr::anchor() { }
+
+void GetElementPtrConstantExpr::anchor() { }
+
+void CompareConstantExpr::anchor() { }
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