X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FDerivedTypes.h;h=445c3deb7ce205dc8b21a2a45796fa5e63f2a446;hb=f9ef3b6e9eb0218477de2d1e8d0820263524670b;hp=0fc2c3a0c3af1449daf04d41dcb60b04b29ba7a9;hpb=c0ca67fbd39ce311dfaf30421ea193f8ecea1b62;p=oota-llvm.git diff --git a/include/llvm/DerivedTypes.h b/include/llvm/DerivedTypes.h index 0fc2c3a0c3a..445c3deb7ce 100644 --- a/include/llvm/DerivedTypes.h +++ b/include/llvm/DerivedTypes.h @@ -96,28 +96,26 @@ public: class FunctionType : public Type { FunctionType(const FunctionType &); // Do not implement const FunctionType &operator=(const FunctionType &); // Do not implement - FunctionType(const Type *Result, ArrayRef Params, bool IsVarArgs); + FunctionType(Type *Result, ArrayRef Params, bool IsVarArgs); public: /// FunctionType::get - This static method is the primary way of constructing /// a FunctionType. /// - static FunctionType *get(const Type *Result, - ArrayRef Params, bool isVarArg); - static FunctionType *get(const Type *Result, + static FunctionType *get(Type *Result, ArrayRef Params, bool isVarArg); /// FunctionType::get - Create a FunctionType taking no parameters. /// - static FunctionType *get(const Type *Result, bool isVarArg); + static FunctionType *get(Type *Result, bool isVarArg); /// isValidReturnType - Return true if the specified type is valid as a return /// type. - static bool isValidReturnType(const Type *RetTy); + static bool isValidReturnType(Type *RetTy); /// isValidArgumentType - Return true if the specified type is valid as an /// argument type. - static bool isValidArgumentType(const Type *ArgTy); + static bool isValidArgumentType(Type *ArgTy); bool isVarArg() const { return getSubclassData(); } Type *getReturnType() const { return ContainedTys[0]; } @@ -152,8 +150,8 @@ public: /// getTypeAtIndex - Given an index value into the type, return the type of /// the element. /// - Type *getTypeAtIndex(const Value *V) const; - Type *getTypeAtIndex(unsigned Idx) const; + Type *getTypeAtIndex(const Value *V); + Type *getTypeAtIndex(unsigned Idx); bool indexValid(const Value *V) const; bool indexValid(unsigned Idx) const; @@ -168,10 +166,25 @@ public: }; -/// StructType - Class to represent struct types, both normal and packed. -/// Besides being optionally packed, structs can be either "anonymous" or may -/// have an identity. Anonymous structs are uniqued by structural equivalence, -/// but types are each unique when created, and optionally have a name. +/// StructType - Class to represent struct types. There are two different kinds +/// of struct types: Literal structs and Identified structs. +/// +/// Literal struct types (e.g. { i32, i32 }) are uniqued structurally, and must +/// always have a body when created. You can get one of these by using one of +/// the StructType::get() forms. +/// +/// Identified structs (e.g. %foo or %42) may optionally have a name and are not +/// uniqued. The names for identified structs are managed at the LLVMContext +/// level, so there can only be a single identified struct with a given name in +/// a particular LLVMContext. Identified structs may also optionally be opaque +/// (have no body specified). You get one of these by using one of the +/// StructType::create() forms. +/// +/// Independent of what kind of struct you have, the body of a struct type are +/// laid out in memory consequtively with the elements directly one after the +/// other (if the struct is packed) or (if not packed) with padding between the +/// elements as defined by TargetData (which is required to match what the code +/// generator for a target expects). /// class StructType : public CompositeType { StructType(const StructType &); // Do not implement @@ -182,35 +195,37 @@ class StructType : public CompositeType { // This is the contents of the SubClassData field. SCDB_HasBody = 1, SCDB_Packed = 2, - SCDB_IsAnonymous = 4 + SCDB_IsLiteral = 4 }; /// SymbolTableEntry - For a named struct that actually has a name, this is a /// pointer to the symbol table entry (maintained by LLVMContext) for the - /// struct. This is null if the type is an anonymous struct or if it is - /// a named type that has an empty name. + /// struct. This is null if the type is an literal struct or if it is + /// a identified type that has an empty name. /// void *SymbolTableEntry; public: - /// StructType::createNamed - This creates a named struct with no body - /// specified. If the name is empty, it creates an unnamed struct, which has - /// a unique identity but no actual name. - static StructType *createNamed(LLVMContext &Context, StringRef Name); + ~StructType() { + delete [] ContainedTys; // Delete the body. + } + + /// StructType::create - This creates an identified struct. + static StructType *create(LLVMContext &Context, StringRef Name); + static StructType *create(LLVMContext &Context); - static StructType *createNamed(StringRef Name, ArrayRef Elements, - bool isPacked = false); - static StructType *createNamed(LLVMContext &Context, StringRef Name, - ArrayRef Elements, - bool isPacked = false); - static StructType *createNamed(StringRef Name, Type *elt1, ...) END_WITH_NULL; + static StructType *create(ArrayRef Elements, + StringRef Name, + bool isPacked = false); + static StructType *create(ArrayRef Elements); + static StructType *create(LLVMContext &Context, + ArrayRef Elements, + StringRef Name, + bool isPacked = false); + static StructType *create(LLVMContext &Context, ArrayRef Elements); + static StructType *create(StringRef Name, Type *elt1, ...) END_WITH_NULL; /// StructType::get - This static method is the primary way to create a - /// StructType. - /// - /// FIXME: Remove the 'const Type*' version of this when types are pervasively - /// de-constified. - static StructType *get(LLVMContext &Context, ArrayRef Elements, - bool isPacked = false); + /// literal StructType. static StructType *get(LLVMContext &Context, ArrayRef Elements, bool isPacked = false); @@ -222,13 +237,13 @@ public: /// structure types by specifying the elements as arguments. Note that this /// method always returns a non-packed struct, and requires at least one /// element type. - static StructType *get(const Type *elt1, ...) END_WITH_NULL; + static StructType *get(Type *elt1, ...) END_WITH_NULL; bool isPacked() const { return (getSubclassData() & SCDB_Packed) != 0; } - /// isAnonymous - Return true if this type is uniqued by structural - /// equivalence, false if it has an identity. - bool isAnonymous() const {return (getSubclassData() & SCDB_IsAnonymous) != 0;} + /// isLiteral - Return true if this type is uniqued by structural + /// equivalence, false if it is a struct definition. + bool isLiteral() const { return (getSubclassData() & SCDB_IsLiteral) != 0; } /// isOpaque - Return true if this is a type with an identity that has no body /// specified yet. These prints as 'opaque' in .ll files. @@ -239,21 +254,21 @@ public: /// getName - Return the name for this struct type if it has an identity. /// This may return an empty string for an unnamed struct type. Do not call - /// this on an anonymous type. + /// this on an literal type. StringRef getName() const; /// setName - Change the name of this type to the specified name, or to a name - /// with a suffix if there is a collision. Do not call this on an anonymous + /// with a suffix if there is a collision. Do not call this on an literal /// type. void setName(StringRef Name); - /// setBody - Specify a body for an opaque type. + /// setBody - Specify a body for an opaque identified type. void setBody(ArrayRef Elements, bool isPacked = false); void setBody(Type *elt1, ...) END_WITH_NULL; /// isValidElementType - Return true if the specified type is valid as a /// element type. - static bool isValidElementType(const Type *ElemTy); + static bool isValidElementType(Type *ElemTy); // Iterator access to the elements. @@ -263,7 +278,7 @@ public: /// isLayoutIdentical - Return true if this is layout identical to the /// specified struct. - bool isLayoutIdentical(const StructType *Other) const; + bool isLayoutIdentical(StructType *Other) const; // Random access to the elements unsigned getNumElements() const { return NumContainedTys; } @@ -324,11 +339,11 @@ public: /// ArrayType::get - This static method is the primary way to construct an /// ArrayType /// - static ArrayType *get(const Type *ElementType, uint64_t NumElements); + static ArrayType *get(Type *ElementType, uint64_t NumElements); /// isValidElementType - Return true if the specified type is valid as a /// element type. - static bool isValidElementType(const Type *ElemTy); + static bool isValidElementType(Type *ElemTy); uint64_t getNumElements() const { return NumElements; } @@ -351,13 +366,13 @@ public: /// VectorType::get - This static method is the primary way to construct an /// VectorType. /// - static VectorType *get(const Type *ElementType, unsigned NumElements); + static VectorType *get(Type *ElementType, unsigned NumElements); /// VectorType::getInteger - This static method gets a VectorType with the /// same number of elements as the input type, and the element type is an /// integer type of the same width as the input element type. /// - static VectorType *getInteger(const VectorType *VTy) { + static VectorType *getInteger(VectorType *VTy) { unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); Type *EltTy = IntegerType::get(VTy->getContext(), EltBits); return VectorType::get(EltTy, VTy->getNumElements()); @@ -367,7 +382,7 @@ public: /// getInteger except that the element types are twice as wide as the /// elements in the input type. /// - static VectorType *getExtendedElementVectorType(const VectorType *VTy) { + static VectorType *getExtendedElementVectorType(VectorType *VTy) { unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); Type *EltTy = IntegerType::get(VTy->getContext(), EltBits * 2); return VectorType::get(EltTy, VTy->getNumElements()); @@ -377,7 +392,7 @@ public: /// getInteger except that the element types are half as wide as the /// elements in the input type. /// - static VectorType *getTruncatedElementVectorType(const VectorType *VTy) { + static VectorType *getTruncatedElementVectorType(VectorType *VTy) { unsigned EltBits = VTy->getElementType()->getPrimitiveSizeInBits(); assert((EltBits & 1) == 0 && "Cannot truncate vector element with odd bit-width"); @@ -387,7 +402,7 @@ public: /// isValidElementType - Return true if the specified type is valid as a /// element type. - static bool isValidElementType(const Type *ElemTy); + static bool isValidElementType(Type *ElemTy); /// @brief Return the number of elements in the Vector type. unsigned getNumElements() const { return NumElements; } @@ -414,17 +429,17 @@ class PointerType : public SequentialType { public: /// PointerType::get - This constructs a pointer to an object of the specified /// type in a numbered address space. - static PointerType *get(const Type *ElementType, unsigned AddressSpace); + static PointerType *get(Type *ElementType, unsigned AddressSpace); /// PointerType::getUnqual - This constructs a pointer to an object of the /// specified type in the generic address space (address space zero). - static PointerType *getUnqual(const Type *ElementType) { + static PointerType *getUnqual(Type *ElementType) { return PointerType::get(ElementType, 0); } /// isValidElementType - Return true if the specified type is valid as a /// element type. - static bool isValidElementType(const Type *ElemTy); + static bool isValidElementType(Type *ElemTy); /// @brief Return the address space of the Pointer type. inline unsigned getAddressSpace() const { return getSubclassData(); }