-//===----------------- LLVMContextImpl.h - Implementation ------*- C++ -*--===//
+//===-- LLVMContextImpl.h - The LLVMContextImpl opaque class ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
#ifndef LLVM_LLVMCONTEXT_IMPL_H
#define LLVM_LLVMCONTEXT_IMPL_H
-#include "llvm/System/RWMutex.h"
+#include "llvm/LLVMContext.h"
+#include "ConstantsContext.h"
+#include "LeaksContext.h"
+#include "llvm/Constants.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/Metadata.h"
+#include "llvm/Support/ValueHandle.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APInt.h"
+#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/FoldingSet.h"
+#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/Hashing.h"
+#include <vector>
namespace llvm {
class ConstantInt;
class ConstantFP;
-class MDString;
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) {}
+ Type* type;
+ KeyTy(const APInt& V, 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);
}
+ friend hash_code hash_value(const KeyTy &Key) {
+ return hash_combine(Key.type, Key.val);
+ }
};
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();
+ return static_cast<unsigned>(hash_value(Key));
}
static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
return LHS == RHS;
}
- static bool isPod() { return false; }
};
struct DenseMapAPFloatKeyInfo {
bool operator!=(const KeyTy& that) const {
return !this->operator==(that);
}
+ friend hash_code hash_value(const KeyTy &Key) {
+ return hash_combine(Key.val);
+ }
};
static inline KeyTy getEmptyKey() {
return KeyTy(APFloat(APFloat::Bogus,1));
return KeyTy(APFloat(APFloat::Bogus,2));
}
static unsigned getHashValue(const KeyTy &Key) {
- return Key.val.getHashValue();
+ return static_cast<unsigned>(hash_value(Key));
}
static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
return LHS == RHS;
}
- static bool isPod() { return false; }
};
+struct AnonStructTypeKeyInfo {
+ struct KeyTy {
+ ArrayRef<Type*> ETypes;
+ bool isPacked;
+ KeyTy(const ArrayRef<Type*>& E, bool P) :
+ ETypes(E), isPacked(P) {}
+ KeyTy(const KeyTy& that) :
+ ETypes(that.ETypes), isPacked(that.isPacked) {}
+ KeyTy(const StructType* ST) :
+ ETypes(ArrayRef<Type*>(ST->element_begin(), ST->element_end())),
+ isPacked(ST->isPacked()) {}
+ bool operator==(const KeyTy& that) const {
+ if (isPacked != that.isPacked)
+ return false;
+ if (ETypes != that.ETypes)
+ return false;
+ return true;
+ }
+ bool operator!=(const KeyTy& that) const {
+ return !this->operator==(that);
+ }
+ };
+ static inline StructType* getEmptyKey() {
+ return DenseMapInfo<StructType*>::getEmptyKey();
+ }
+ static inline StructType* getTombstoneKey() {
+ return DenseMapInfo<StructType*>::getTombstoneKey();
+ }
+ static unsigned getHashValue(const KeyTy& Key) {
+ return hash_combine(hash_combine_range(Key.ETypes.begin(),
+ Key.ETypes.end()),
+ Key.isPacked);
+ }
+ static unsigned getHashValue(const StructType *ST) {
+ return getHashValue(KeyTy(ST));
+ }
+ static bool isEqual(const KeyTy& LHS, const StructType *RHS) {
+ if (RHS == getEmptyKey() || RHS == getTombstoneKey())
+ return false;
+ return LHS == KeyTy(RHS);
+ }
+ static bool isEqual(const StructType *LHS, const StructType *RHS) {
+ return LHS == RHS;
+ }
+};
+
+struct FunctionTypeKeyInfo {
+ struct KeyTy {
+ const Type *ReturnType;
+ ArrayRef<Type*> Params;
+ bool isVarArg;
+ KeyTy(const Type* R, const ArrayRef<Type*>& P, bool V) :
+ ReturnType(R), Params(P), isVarArg(V) {}
+ KeyTy(const KeyTy& that) :
+ ReturnType(that.ReturnType),
+ Params(that.Params),
+ isVarArg(that.isVarArg) {}
+ KeyTy(const FunctionType* FT) :
+ ReturnType(FT->getReturnType()),
+ Params(ArrayRef<Type*>(FT->param_begin(), FT->param_end())),
+ isVarArg(FT->isVarArg()) {}
+ bool operator==(const KeyTy& that) const {
+ if (ReturnType != that.ReturnType)
+ return false;
+ if (isVarArg != that.isVarArg)
+ return false;
+ if (Params != that.Params)
+ return false;
+ return true;
+ }
+ bool operator!=(const KeyTy& that) const {
+ return !this->operator==(that);
+ }
+ };
+ static inline FunctionType* getEmptyKey() {
+ return DenseMapInfo<FunctionType*>::getEmptyKey();
+ }
+ static inline FunctionType* getTombstoneKey() {
+ return DenseMapInfo<FunctionType*>::getTombstoneKey();
+ }
+ static unsigned getHashValue(const KeyTy& Key) {
+ return hash_combine(Key.ReturnType,
+ hash_combine_range(Key.Params.begin(),
+ Key.Params.end()),
+ Key.isVarArg);
+ }
+ static unsigned getHashValue(const FunctionType *FT) {
+ return getHashValue(KeyTy(FT));
+ }
+ static bool isEqual(const KeyTy& LHS, const FunctionType *RHS) {
+ if (RHS == getEmptyKey() || RHS == getTombstoneKey())
+ return false;
+ return LHS == KeyTy(RHS);
+ }
+ static bool isEqual(const FunctionType *LHS, const FunctionType *RHS) {
+ return LHS == RHS;
+ }
+};
+
+// Provide a FoldingSetTrait::Equals specialization for MDNode that can use a
+// shortcut to avoid comparing all operands.
+template<> struct FoldingSetTrait<MDNode> : DefaultFoldingSetTrait<MDNode> {
+ static bool Equals(const MDNode &X, const FoldingSetNodeID &ID,
+ unsigned IDHash, FoldingSetNodeID &TempID) {
+ assert(!X.isNotUniqued() && "Non-uniqued MDNode in FoldingSet?");
+ // First, check if the cached hashes match. If they don't we can skip the
+ // expensive operand walk.
+ if (X.Hash != IDHash)
+ return false;
+
+ // If they match we have to compare the operands.
+ X.Profile(TempID);
+ return TempID == ID;
+ }
+ static unsigned ComputeHash(const MDNode &X, FoldingSetNodeID &) {
+ return X.Hash; // Return cached hash.
+ }
+};
+
+/// DebugRecVH - This is a CallbackVH used to keep the Scope -> index maps
+/// up to date as MDNodes mutate. This class is implemented in DebugLoc.cpp.
+class DebugRecVH : public CallbackVH {
+ /// Ctx - This is the LLVM Context being referenced.
+ LLVMContextImpl *Ctx;
+
+ /// Idx - The index into either ScopeRecordIdx or ScopeInlinedAtRecords that
+ /// this reference lives in. If this is zero, then it represents a
+ /// non-canonical entry that has no DenseMap value. This can happen due to
+ /// RAUW.
+ int Idx;
+public:
+ DebugRecVH(MDNode *n, LLVMContextImpl *ctx, int idx)
+ : CallbackVH(n), Ctx(ctx), Idx(idx) {}
+
+ MDNode *get() const {
+ return cast_or_null<MDNode>(getValPtr());
+ }
+
+ virtual void deleted();
+ virtual void allUsesReplacedWith(Value *VNew);
+};
+
class LLVMContextImpl {
- sys::SmartRWMutex<true> ConstantsLock;
+public:
+ /// OwnedModules - The set of modules instantiated in this context, and which
+ /// will be automatically deleted if this context is deleted.
+ SmallPtrSet<Module*, 4> OwnedModules;
+
+ LLVMContext::InlineAsmDiagHandlerTy InlineAsmDiagHandler;
+ void *InlineAsmDiagContext;
typedef DenseMap<DenseMapAPIntKeyInfo::KeyTy, ConstantInt*,
- DenseMapAPIntKeyInfo> IntMapTy;
+ DenseMapAPIntKeyInfo> IntMapTy;
IntMapTy IntConstants;
typedef DenseMap<DenseMapAPFloatKeyInfo::KeyTy, ConstantFP*,
- DenseMapAPFloatKeyInfo> FPMapTy;
+ DenseMapAPFloatKeyInfo> FPMapTy;
FPMapTy FPConstants;
- StringMap<MDString*> MDStringCache;
+ StringMap<Value*> MDStringCache;
- LLVMContext &Context;
- LLVMContextImpl();
- LLVMContextImpl(const LLVMContextImpl&);
-public:
- LLVMContextImpl(LLVMContext &C) : Context(C) { }
+ FoldingSet<MDNode> MDNodeSet;
+ // MDNodes may be uniqued or not uniqued. When they're not uniqued, they
+ // aren't in the MDNodeSet, but they're still shared between objects, so no
+ // one object can destroy them. This set allows us to at least destroy them
+ // on Context destruction.
+ SmallPtrSet<MDNode*, 1> NonUniquedMDNodes;
+
+ DenseMap<Type*, ConstantAggregateZero*> CAZConstants;
+
+ typedef ConstantAggrUniqueMap<ArrayType, ConstantArray> ArrayConstantsTy;
+ ArrayConstantsTy ArrayConstants;
+
+ typedef ConstantAggrUniqueMap<StructType, ConstantStruct> StructConstantsTy;
+ StructConstantsTy StructConstants;
+
+ typedef ConstantAggrUniqueMap<VectorType, ConstantVector> VectorConstantsTy;
+ VectorConstantsTy VectorConstants;
+
+ DenseMap<PointerType*, ConstantPointerNull*> CPNConstants;
+
+ DenseMap<Type*, UndefValue*> UVConstants;
+
+ StringMap<ConstantDataSequential*> CDSConstants;
+
+
+ DenseMap<std::pair<Function*, BasicBlock*> , BlockAddress*> BlockAddresses;
+ ConstantUniqueMap<ExprMapKeyType, const ExprMapKeyType&, Type, ConstantExpr>
+ ExprConstants;
+
+ ConstantUniqueMap<InlineAsmKeyType, const InlineAsmKeyType&, PointerType,
+ InlineAsm> InlineAsms;
+
+ ConstantInt *TheTrueVal;
+ ConstantInt *TheFalseVal;
+
+ LeakDetectorImpl<Value> LLVMObjects;
+
+ // Basic type instances.
+ Type VoidTy, LabelTy, HalfTy, FloatTy, DoubleTy, MetadataTy;
+ Type X86_FP80Ty, FP128Ty, PPC_FP128Ty, X86_MMXTy;
+ IntegerType Int1Ty, Int8Ty, Int16Ty, Int32Ty, Int64Ty;
+
+
+ /// TypeAllocator - All dynamically allocated types are allocated from this.
+ /// They live forever until the context is torn down.
+ BumpPtrAllocator TypeAllocator;
+
+ DenseMap<unsigned, IntegerType*> IntegerTypes;
+
+ typedef DenseMap<FunctionType*, bool, FunctionTypeKeyInfo> FunctionTypeMap;
+ FunctionTypeMap FunctionTypes;
+ typedef DenseMap<StructType*, bool, AnonStructTypeKeyInfo> StructTypeMap;
+ StructTypeMap AnonStructTypes;
+ StringMap<StructType*> NamedStructTypes;
+ unsigned NamedStructTypesUniqueID;
+
+ DenseMap<std::pair<Type *, uint64_t>, ArrayType*> ArrayTypes;
+ DenseMap<std::pair<Type *, unsigned>, VectorType*> VectorTypes;
+ DenseMap<Type*, PointerType*> PointerTypes; // Pointers in AddrSpace = 0
+ DenseMap<std::pair<Type*, unsigned>, PointerType*> ASPointerTypes;
+
+
+ /// 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;
+
+ /// CustomMDKindNames - Map to hold the metadata string to ID mapping.
+ StringMap<unsigned> CustomMDKindNames;
+
+ typedef std::pair<unsigned, TrackingVH<MDNode> > MDPairTy;
+ typedef SmallVector<MDPairTy, 2> MDMapTy;
+
+ /// MetadataStore - Collection of per-instruction metadata used in this
+ /// context.
+ DenseMap<const Instruction *, MDMapTy> MetadataStore;
+
+ /// ScopeRecordIdx - This is the index in ScopeRecords for an MDNode scope
+ /// entry with no "inlined at" element.
+ DenseMap<MDNode*, int> ScopeRecordIdx;
- /// Return a ConstantInt with the specified value and an implied Type. The
- /// type is the integer type that corresponds to the bit width of the value.
- ConstantInt *getConstantInt(const APInt &V);
+ /// ScopeRecords - These are the actual mdnodes (in a value handle) for an
+ /// index. The ValueHandle ensures that ScopeRecordIdx stays up to date if
+ /// the MDNode is RAUW'd.
+ std::vector<DebugRecVH> ScopeRecords;
- ConstantFP *getConstantFP(const APFloat &V);
+ /// ScopeInlinedAtIdx - This is the index in ScopeInlinedAtRecords for an
+ /// scope/inlined-at pair.
+ DenseMap<std::pair<MDNode*, MDNode*>, int> ScopeInlinedAtIdx;
- MDString *getMDString(const char *StrBegin, const char *StrEnd);
+ /// ScopeInlinedAtRecords - These are the actual mdnodes (in value handles)
+ /// for an index. The ValueHandle ensures that ScopeINlinedAtIdx stays up
+ /// to date.
+ std::vector<std::pair<DebugRecVH, DebugRecVH> > ScopeInlinedAtRecords;
+ int getOrAddScopeRecordIdxEntry(MDNode *N, int ExistingIdx);
+ int getOrAddScopeInlinedAtIdxEntry(MDNode *Scope, MDNode *IA,int ExistingIdx);
- void erase(MDString *M);
+ LLVMContextImpl(LLVMContext &C);
+ ~LLVMContextImpl();
};
}
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