X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FMetadata.h;h=7cfcb7007950ae18867be5e59becd66529337434;hb=d9c86dc6d95885f0c88f8068a06eab87da328490;hp=ec6ba1b63d5e9b79d1b5c7caf69983192e90f86a;hpb=5d0cacdbb6577f2449986f345858db17dc1bcf59;p=oota-llvm.git diff --git a/include/llvm/Metadata.h b/include/llvm/Metadata.h index ec6ba1b63d5..7cfcb700795 100644 --- a/include/llvm/Metadata.h +++ b/include/llvm/Metadata.h @@ -30,28 +30,11 @@ template class SymbolTableListTraits; -//===----------------------------------------------------------------------===// -// MetadataBase - A base class for MDNode, MDString and NamedMDNode. -class MetadataBase : public Value { -protected: - MetadataBase(const Type *Ty, unsigned scid) - : Value(Ty, scid) {} - -public: - - /// Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const MetadataBase *) { return true; } - static bool classof(const Value *V) { - return V->getValueID() == MDStringVal || V->getValueID() == MDNodeVal - || V->getValueID() == NamedMDNodeVal; - } -}; - //===----------------------------------------------------------------------===// /// MDString - a single uniqued string. /// These are used to efficiently contain a byte sequence for metadata. /// MDString is always unnamd. -class MDString : public MetadataBase { +class MDString : public Value { MDString(const MDString &); // DO NOT IMPLEMENT StringRef Str; @@ -60,8 +43,10 @@ protected: public: static MDString *get(LLVMContext &Context, StringRef Str); - static MDString *get(LLVMContext &Context, const char *Str); - + static MDString *get(LLVMContext &Context, const char *Str) { + return get(Context, Str ? StringRef(Str) : StringRef()); + } + StringRef getString() const { return Str; } unsigned getLength() const { return (unsigned)Str.size(); } @@ -88,10 +73,11 @@ class MDNodeOperand; //===----------------------------------------------------------------------===// /// MDNode - a tuple of other values. -class MDNode : public MetadataBase, public FoldingSetNode { +class MDNode : public Value, public FoldingSetNode { MDNode(const MDNode &); // DO NOT IMPLEMENT void operator=(const MDNode &); // DO NOT IMPLEMENT friend class MDNodeOperand; + friend class LLVMContextImpl; /// NumOperands - This many 'MDNodeOperand' items are co-allocated onto the /// end of this MDNode. @@ -105,7 +91,7 @@ class MDNode : public MetadataBase, public FoldingSetNode { FunctionLocalBit = 1 << 0, /// NotUniquedBit - This is set on MDNodes that are not uniqued because they - /// have a null perand. + /// have a null operand. NotUniquedBit = 1 << 1, /// DestroyFlag - This bit is set by destroy() so the destructor can assert @@ -113,17 +99,35 @@ class MDNode : public MetadataBase, public FoldingSetNode { DestroyFlag = 1 << 2 }; - // Replace each instance of F from the operand list of this node with T. + // FunctionLocal enums. + enum FunctionLocalness { + FL_Unknown = -1, + FL_No = 0, + FL_Yes = 1 + }; + + /// replaceOperand - Replace each instance of F from the operand list of this + /// node with T. void replaceOperand(MDNodeOperand *Op, Value *NewVal); ~MDNode(); protected: explicit MDNode(LLVMContext &C, Value *const *Vals, unsigned NumVals, bool isFunctionLocal); + + static MDNode *getMDNode(LLVMContext &C, Value *const *Vals, unsigned NumVals, + FunctionLocalness FL, bool Insert = true); public: // Constructors and destructors. - static MDNode *get(LLVMContext &Context, Value *const *Vals, unsigned NumVals, - bool isFunctionLocal = false); + static MDNode *get(LLVMContext &Context, Value *const *Vals, + unsigned NumVals); + // getWhenValsUnresolved - Construct MDNode determining function-localness + // from isFunctionLocal argument, not by analyzing Vals. + static MDNode *getWhenValsUnresolved(LLVMContext &Context, Value *const *Vals, + unsigned NumVals, bool isFunctionLocal); + + static MDNode *getIfExists(LLVMContext &Context, Value *const *Vals, + unsigned NumVals); /// getOperand - Return specified operand. Value *getOperand(unsigned i) const; @@ -138,6 +142,12 @@ public: bool isFunctionLocal() const { return (getSubclassDataFromValue() & FunctionLocalBit) != 0; } + + // getFunction - If this metadata is function-local and recursively has a + // function-local operand, return the first such operand's parent function. + // Otherwise, return null. getFunction() should not be used for performance- + // critical code because it recursively visits all the MDNode's operands. + const Function *getFunction() const; // destroy - Delete this node. Only when there are no uses. void destroy(); @@ -155,9 +165,7 @@ private: bool isNotUniqued() const { return (getSubclassDataFromValue() & NotUniquedBit) != 0; } - void setIsNotUniqued() { - setValueSubclassData(getSubclassDataFromValue() | NotUniquedBit); - } + void setIsNotUniqued(); // Shadow Value::setValueSubclassData with a private forwarding method so that // any future subclasses cannot accidentally use it. @@ -167,24 +175,25 @@ private: }; //===----------------------------------------------------------------------===// -/// NamedMDNode - a tuple of other metadata. +/// NamedMDNode - a tuple of MDNodes. /// NamedMDNode is always named. All NamedMDNode operand has a type of metadata. -class NamedMDNode : public MetadataBase, public ilist_node { +class NamedMDNode : public Value, public ilist_node { friend class SymbolTableListTraits; + friend struct ilist_traits; friend class LLVMContextImpl; - NamedMDNode(const NamedMDNode &); // DO NOT IMPLEMENT + std::string Name; Module *Parent; - void *Operands; // SmallVector, 4> + void *Operands; // SmallVector, 4> void setParent(Module *M) { Parent = M; } protected: - explicit NamedMDNode(LLVMContext &C, const Twine &N, MetadataBase*const *Vals, + explicit NamedMDNode(LLVMContext &C, const Twine &N, MDNode*const *Vals, unsigned NumVals, Module *M = 0); public: - static NamedMDNode *Create(LLVMContext &C, const Twine &N, - MetadataBase *const *MDs, + static NamedMDNode *Create(LLVMContext &C, const Twine &N, + MDNode *const *MDs, unsigned NumMDs, Module *M = 0) { return new NamedMDNode(C, N, MDs, NumMDs, M); } @@ -206,14 +215,20 @@ public: inline const Module *getParent() const { return Parent; } /// getOperand - Return specified operand. - MetadataBase *getOperand(unsigned i) const; + MDNode *getOperand(unsigned i) const; /// getNumOperands - Return the number of NamedMDNode operands. unsigned getNumOperands() const; /// addOperand - Add metadata operand. - void addOperand(MetadataBase *M); - + void addOperand(MDNode *M); + + /// setName - Set the name of this named metadata. + void setName(const Twine &NewName); + + /// getName - Return a constant reference to this named metadata's name. + StringRef getName() const; + /// Methods for support type inquiry through isa, cast, and dyn_cast: static inline bool classof(const NamedMDNode *) { return true; } static bool classof(const Value *V) {