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//===-- LLVMContextImpl.h - The LLVMContextImpl opaque class --------------===//
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// The LLVM Compiler Infrastructure
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//===----------------------------------------------------------------------===//
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// This file declares LLVMContextImpl, the opaque implementation
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LLVMCONTEXT_IMPL_H
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#define LLVM_LLVMCONTEXT_IMPL_H
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#include "ConstantsContext.h"
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#include "LeaksContext.h"
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#include "TypesContext.h"
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#include "llvm/LLVMContext.h"
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#include "llvm/Metadata.h"
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/Support/ValueHandle.h"
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#include "llvm/ADT/APFloat.h"
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#include "llvm/ADT/APInt.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/FoldingSet.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/StringMap.h"
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struct DenseMapAPIntKeyInfo {
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KeyTy(const APInt& V, const Type* Ty) : val(V), type(Ty) {}
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KeyTy(const KeyTy& that) : val(that.val), type(that.type) {}
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bool operator==(const KeyTy& that) const {
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return type == that.type && this->val == that.val;
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bool operator!=(const KeyTy& that) const {
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return !this->operator==(that);
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static inline KeyTy getEmptyKey() { return KeyTy(APInt(1,0), 0); }
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static inline KeyTy getTombstoneKey() { return KeyTy(APInt(1,1), 0); }
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static unsigned getHashValue(const KeyTy &Key) {
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return DenseMapInfo<void*>::getHashValue(Key.type) ^
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Key.val.getHashValue();
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static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
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struct DenseMapAPFloatKeyInfo {
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KeyTy(const APFloat& V) : val(V){}
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KeyTy(const KeyTy& that) : val(that.val) {}
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bool operator==(const KeyTy& that) const {
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return this->val.bitwiseIsEqual(that.val);
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bool operator!=(const KeyTy& that) const {
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return !this->operator==(that);
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static inline KeyTy getEmptyKey() {
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return KeyTy(APFloat(APFloat::Bogus,1));
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static inline KeyTy getTombstoneKey() {
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return KeyTy(APFloat(APFloat::Bogus,2));
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static unsigned getHashValue(const KeyTy &Key) {
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return Key.val.getHashValue();
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static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
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class LLVMContextImpl {
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typedef DenseMap<DenseMapAPIntKeyInfo::KeyTy, ConstantInt*,
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DenseMapAPIntKeyInfo> IntMapTy;
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IntMapTy IntConstants;
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typedef DenseMap<DenseMapAPFloatKeyInfo::KeyTy, ConstantFP*,
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DenseMapAPFloatKeyInfo> FPMapTy;
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StringMap<MDString*> MDStringCache;
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FoldingSet<MDNode> MDNodeSet;
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ConstantUniqueMap<char, Type, ConstantAggregateZero> AggZeroConstants;
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typedef ConstantUniqueMap<std::vector<Constant*>, ArrayType,
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ConstantArray, true /*largekey*/> ArrayConstantsTy;
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ArrayConstantsTy ArrayConstants;
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typedef ConstantUniqueMap<std::vector<Constant*>, StructType,
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ConstantStruct, true /*largekey*/> StructConstantsTy;
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StructConstantsTy StructConstants;
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typedef ConstantUniqueMap<Constant*, UnionType, ConstantUnion>
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UnionConstantsTy UnionConstants;
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typedef ConstantUniqueMap<std::vector<Constant*>, VectorType,
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ConstantVector> VectorConstantsTy;
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VectorConstantsTy VectorConstants;
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ConstantUniqueMap<char, PointerType, ConstantPointerNull> NullPtrConstants;
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ConstantUniqueMap<char, Type, UndefValue> UndefValueConstants;
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DenseMap<std::pair<Function*, BasicBlock*> , BlockAddress*> BlockAddresses;
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ConstantUniqueMap<ExprMapKeyType, Type, ConstantExpr> ExprConstants;
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ConstantInt *TheTrueVal;
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ConstantInt *TheFalseVal;
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LeakDetectorImpl<Value> LLVMObjects;
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// Basic type instances.
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const Type MetadataTy;
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const Type X86_FP80Ty;
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const Type PPC_FP128Ty;
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const IntegerType Int1Ty;
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const IntegerType Int8Ty;
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const IntegerType Int16Ty;
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const IntegerType Int32Ty;
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const IntegerType Int64Ty;
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// Concrete/Abstract TypeDescriptions - We lazily calculate type descriptions
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// for types as they are needed. Because resolution of types must invalidate
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// all of the abstract type descriptions, we keep them in a seperate map to
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TypePrinting ConcreteTypeDescriptions;
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TypePrinting AbstractTypeDescriptions;
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TypeMap<ArrayValType, ArrayType> ArrayTypes;
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TypeMap<VectorValType, VectorType> VectorTypes;
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TypeMap<PointerValType, PointerType> PointerTypes;
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TypeMap<FunctionValType, FunctionType> FunctionTypes;
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TypeMap<StructValType, StructType> StructTypes;
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TypeMap<UnionValType, UnionType> UnionTypes;
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TypeMap<IntegerValType, IntegerType> IntegerTypes;
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// Opaque types are not structurally uniqued, so don't use TypeMap.
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typedef SmallPtrSet<const OpaqueType*, 8> OpaqueTypesTy;
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OpaqueTypesTy OpaqueTypes;
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/// Used as an abstract type that will never be resolved.
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OpaqueType *const AlwaysOpaqueTy;
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/// ValueHandles - This map keeps track of all of the value handles that are
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/// watching a Value*. The Value::HasValueHandle bit is used to know
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// whether or not a value has an entry in this map.
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typedef DenseMap<Value*, ValueHandleBase*> ValueHandlesTy;
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ValueHandlesTy ValueHandles;
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/// CustomMDKindNames - Map to hold the metadata string to ID mapping.
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StringMap<unsigned> CustomMDKindNames;
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typedef std::pair<unsigned, TrackingVH<MDNode> > MDPairTy;
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typedef SmallVector<MDPairTy, 2> MDMapTy;
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/// MetadataStore - Collection of per-instruction metadata used in this
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DenseMap<const Instruction *, MDMapTy> MetadataStore;
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LLVMContextImpl(LLVMContext &C) : TheTrueVal(0), TheFalseVal(0),
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VoidTy(C, Type::VoidTyID),
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LabelTy(C, Type::LabelTyID),
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FloatTy(C, Type::FloatTyID),
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DoubleTy(C, Type::DoubleTyID),
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MetadataTy(C, Type::MetadataTyID),
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X86_FP80Ty(C, Type::X86_FP80TyID),
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FP128Ty(C, Type::FP128TyID),
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PPC_FP128Ty(C, Type::PPC_FP128TyID),
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AlwaysOpaqueTy(new OpaqueType(C)) {
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// Make sure the AlwaysOpaqueTy stays alive as long as the Context.
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AlwaysOpaqueTy->addRef();
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OpaqueTypes.insert(AlwaysOpaqueTy);
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ExprConstants.freeConstants();
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ArrayConstants.freeConstants();
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StructConstants.freeConstants();
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VectorConstants.freeConstants();
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AggZeroConstants.freeConstants();
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NullPtrConstants.freeConstants();
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UndefValueConstants.freeConstants();
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for (IntMapTy::iterator I = IntConstants.begin(), E = IntConstants.end();
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if (I->second->use_empty())
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for (FPMapTy::iterator I = FPConstants.begin(), E = FPConstants.end();
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if (I->second->use_empty())
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AlwaysOpaqueTy->dropRef();
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for (OpaqueTypesTy::iterator I = OpaqueTypes.begin(), E = OpaqueTypes.end();
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(*I)->AbstractTypeUsers.clear();
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// Destroy MDNode operands first.
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for (FoldingSetIterator<MDNode> I = MDNodeSet.begin(), E = MDNodeSet.end();
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N->replaceAllOperandsWithNull();
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while (!MDNodeSet.empty()) {
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MDNode *N = &(*MDNodeSet.begin());
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// Destroy MDStrings.
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for (StringMap<MDString*>::iterator I = MDStringCache.begin(),
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E = MDStringCache.end(); I != E; ++I) {