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//===----------------- LLVMContextImpl.h - Implementation ------*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares LLVMContextImpl, the opaque implementation
// of LLVMContext.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LLVMCONTEXT_IMPL_H
#define LLVM_LLVMCONTEXT_IMPL_H
#include "ConstantsContext.h"
#include "LeaksContext.h"
#include "TypesContext.h"
#include "llvm/LLVMContext.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/System/Mutex.h"
#include "llvm/System/RWMutex.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/StringMap.h"
#include <vector>
namespace llvm {
class ConstantInt;
class ConstantFP;
class MDString;
class MDNode;
class LLVMContext;
class Type;
class Value;
struct DenseMapAPIntKeyInfo {
struct KeyTy {
APInt val;
const Type* type;
KeyTy(const APInt& V, const Type* Ty) : val(V), type(Ty) {}
KeyTy(const KeyTy& that) : val(that.val), type(that.type) {}
bool operator==(const KeyTy& that) const {
return type == that.type && this->val == that.val;
}
bool operator!=(const KeyTy& that) const {
return !this->operator==(that);
}
};
static inline KeyTy getEmptyKey() { return KeyTy(APInt(1,0), 0); }
static inline KeyTy getTombstoneKey() { return KeyTy(APInt(1,1), 0); }
static unsigned getHashValue(const KeyTy &Key) {
return DenseMapInfo<void*>::getHashValue(Key.type) ^
Key.val.getHashValue();
}
static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
return LHS == RHS;
}
static bool isPod() { return false; }
};
struct DenseMapAPFloatKeyInfo {
struct KeyTy {
APFloat val;
KeyTy(const APFloat& V) : val(V){}
KeyTy(const KeyTy& that) : val(that.val) {}
bool operator==(const KeyTy& that) const {
return this->val.bitwiseIsEqual(that.val);
}
bool operator!=(const KeyTy& that) const {
return !this->operator==(that);
}
};
static inline KeyTy getEmptyKey() {
return KeyTy(APFloat(APFloat::Bogus,1));
}
static inline KeyTy getTombstoneKey() {
return KeyTy(APFloat(APFloat::Bogus,2));
}
static unsigned getHashValue(const KeyTy &Key) {
return Key.val.getHashValue();
}
static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
return LHS == RHS;
}
static bool isPod() { return false; }
};
class LLVMContextImpl {
public:
sys::SmartRWMutex<true> ConstantsLock;
typedef DenseMap<DenseMapAPIntKeyInfo::KeyTy, ConstantInt*,
DenseMapAPIntKeyInfo> IntMapTy;
IntMapTy IntConstants;
typedef DenseMap<DenseMapAPFloatKeyInfo::KeyTy, ConstantFP*,
DenseMapAPFloatKeyInfo> FPMapTy;
FPMapTy FPConstants;
StringMap<MDString*> MDStringCache;
ValueMap<char, Type, ConstantAggregateZero> AggZeroConstants;
typedef ValueMap<std::vector<Value*>, Type, MDNode, true /*largekey*/>
MDNodeMapTy;
MDNodeMapTy MDNodes;
typedef ValueMap<std::vector<Constant*>, ArrayType,
ConstantArray, true /*largekey*/> ArrayConstantsTy;
ArrayConstantsTy ArrayConstants;
typedef ValueMap<std::vector<Constant*>, StructType,
ConstantStruct, true /*largekey*/> StructConstantsTy;
StructConstantsTy StructConstants;
typedef ValueMap<std::vector<Constant*>, VectorType,
ConstantVector> VectorConstantsTy;
VectorConstantsTy VectorConstants;
ValueMap<char, PointerType, ConstantPointerNull> NullPtrConstants;
ValueMap<char, Type, UndefValue> UndefValueConstants;
ValueMap<ExprMapKeyType, Type, ConstantExpr> ExprConstants;
ConstantInt *TheTrueVal;
ConstantInt *TheFalseVal;
// Lock used for guarding access to the leak detector
sys::SmartMutex<true> LLVMObjectsLock;
LeakDetectorImpl<Value> LLVMObjects;
// Lock used for guarding access to the type maps.
sys::SmartMutex<true> TypeMapLock;
// Recursive lock used for guarding access to AbstractTypeUsers.
// NOTE: The true template parameter means this will no-op when we're not in
// multithreaded mode.
sys::SmartMutex<true> AbstractTypeUsersLock;
// Concrete/Abstract TypeDescriptions - We lazily calculate type descriptions
// for types as they are needed. Because resolution of types must invalidate
// all of the abstract type descriptions, we keep them in a seperate map to
// make this easy.
TypePrinting ConcreteTypeDescriptions;
TypePrinting AbstractTypeDescriptions;
TypeMap<ArrayValType, ArrayType> ArrayTypes;
TypeMap<VectorValType, VectorType> VectorTypes;
TypeMap<PointerValType, PointerType> PointerTypes;
TypeMap<FunctionValType, FunctionType> FunctionTypes;
TypeMap<StructValType, StructType> StructTypes;
TypeMap<IntegerValType, IntegerType> IntegerTypes;
const Type *VoidTy;
const Type *LabelTy;
const Type *FloatTy;
const Type *DoubleTy;
const Type *MetadataTy;
const Type *X86_FP80Ty;
const Type *FP128Ty;
const Type *PPC_FP128Ty;
const IntegerType *Int1Ty;
const IntegerType *Int8Ty;
const IntegerType *Int16Ty;
const IntegerType *Int32Ty;
const IntegerType *Int64Ty;
/// ValueHandles - This map keeps track of all of the value handles that are
/// watching a Value*. The Value::HasValueHandle bit is used to know
// whether or not a value has an entry in this map.
typedef DenseMap<Value*, ValueHandleBase*> ValueHandlesTy;
ValueHandlesTy ValueHandles;
LLVMContextImpl(LLVMContext &C) : TheTrueVal(0), TheFalseVal(0),
VoidTy(new Type(C, Type::VoidTyID)),
LabelTy(new Type(C, Type::LabelTyID)),
FloatTy(new Type(C, Type::FloatTyID)),
DoubleTy(new Type(C, Type::DoubleTyID)),
MetadataTy(new Type(C, Type::MetadataTyID)),
X86_FP80Ty(new Type(C, Type::X86_FP80TyID)),
FP128Ty(new Type(C, Type::FP128TyID)),
PPC_FP128Ty(new Type(C, Type::PPC_FP128TyID)),
Int1Ty(new IntegerType(C, 1)),
Int8Ty(new IntegerType(C, 8)),
Int16Ty(new IntegerType(C, 16)),
Int32Ty(new IntegerType(C, 32)),
Int64Ty(new IntegerType(C, 64)) { }
~LLVMContextImpl() {
// In principle, we should delete the member types here. However,
// this causes destruction order issues with the types in the TypeMaps.
// For now, just leak this, which is at least not a regression from the
// previous behavior, though still undesirable.
#if 0
delete VoidTy;
delete LabelTy;
delete FloatTy;
delete DoubleTy;
delete MetadataTy;
delete X86_FP80Ty;
delete FP128Ty;
delete PPC_FP128Ty;
delete Int1Ty;
delete Int8Ty;
delete Int16Ty;
delete Int32Ty;
delete Int64Ty;
#endif
}
};
}
#endif
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