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https://github.com/c64scene-ar/llvm-6502.git
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18961504fc
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2777 91177308-0d34-0410-b5e6-96231b3b80d8
408 lines
15 KiB
C++
408 lines
15 KiB
C++
//===-- llvm/DerivedTypes.h - Classes for handling data types ----*- C++ -*--=//
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//
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// This file contains the declarations of classes that represent "derived
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// types". These are things like "arrays of x" or "structure of x, y, z" or
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// "method returning x taking (y,z) as parameters", etc...
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//
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// The implementations of these classes live in the Type.cpp file.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_DERIVED_TYPES_H
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#define LLVM_DERIVED_TYPES_H
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#include "llvm/Type.h"
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class DerivedType : public Type {
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char isRefining; // Used for recursive types
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// AbstractTypeUsers - Implement a list of the users that need to be notified
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// if I am a type, and I get resolved into a more concrete type.
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//
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///// FIXME: kill mutable nonsense when Type's are not const
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mutable std::vector<AbstractTypeUser *> AbstractTypeUsers;
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protected:
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inline DerivedType(PrimitiveID id) : Type("", id) {
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isRefining = 0;
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}
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~DerivedType() {
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assert(AbstractTypeUsers.empty());
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}
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// typeIsRefined - Notify AbstractTypeUsers of this type that the current type
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// has been refined a bit. The pointer is still valid and still should be
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// used, but the subtypes have changed.
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//
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void typeIsRefined();
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// setDerivedTypeProperties - Based on the subtypes, set the name of this
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// type so that it is printed nicely by the type printer. Also calculate
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// whether this type is abstract or not. Used by the constructor and when
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// the type is refined.
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//
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void setDerivedTypeProperties();
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public:
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//===--------------------------------------------------------------------===//
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// Abstract Type handling methods - These types have special lifetimes, which
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// are managed by (add|remove)AbstractTypeUser. See comments in
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// AbstractTypeUser.h for more information.
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// addAbstractTypeUser - Notify an abstract type that there is a new user of
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// it. This function is called primarily by the PATypeHandle class.
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//
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void addAbstractTypeUser(AbstractTypeUser *U) const;
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// removeAbstractTypeUser - Notify an abstract type that a user of the class
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// no longer has a handle to the type. This function is called primarily by
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// the PATypeHandle class. When there are no users of the abstract type, it
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// is anihilated, because there is no way to get a reference to it ever again.
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//
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void removeAbstractTypeUser(AbstractTypeUser *U) const;
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// refineAbstractTypeTo - This function is used to when it is discovered that
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// the 'this' abstract type is actually equivalent to the NewType specified.
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// This causes all users of 'this' to switch to reference the more concrete
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// type NewType and for 'this' to be deleted.
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//
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void refineAbstractTypeTo(const Type *NewType);
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const DerivedType *T) { return true; }
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static inline bool classof(const Type *T) {
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return T->isDerivedType();
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}
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static inline bool classof(const Value *V) {
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return isa<Type>(V) && classof(cast<Type>(V));
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}
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};
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class FunctionType : public DerivedType {
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public:
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typedef std::vector<PATypeHandle<Type> > ParamTypes;
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private:
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PATypeHandle<Type> ResultType;
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ParamTypes ParamTys;
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bool isVarArgs;
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FunctionType(const FunctionType &); // Do not implement
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const FunctionType &operator=(const FunctionType &); // Do not implement
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protected:
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// This should really be private, but it squelches a bogus warning
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// from GCC to make them protected: warning: `class FunctionType' only
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// defines private constructors and has no friends
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// Private ctor - Only can be created by a static member...
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FunctionType(const Type *Result, const std::vector<const Type*> &Params,
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bool IsVarArgs);
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public:
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inline bool isVarArg() const { return isVarArgs; }
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inline const Type *getReturnType() const { return ResultType; }
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inline const ParamTypes &getParamTypes() const { return ParamTys; }
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// Parameter type accessors...
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const Type *getParamType(unsigned i) const { return ParamTys[i]; }
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// getNumParams - Return the number of fixed parameters this function type
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// requires. This does not consider varargs.
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//
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unsigned getNumParams() const { return ParamTys.size(); }
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virtual const Type *getContainedType(unsigned i) const {
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return i == 0 ? ResultType :
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(i <= ParamTys.size() ? ParamTys[i-1].get() : 0);
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}
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virtual unsigned getNumContainedTypes() const { return ParamTys.size()+1; }
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// refineAbstractType - Called when a contained type is found to be more
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// concrete - this could potentially change us from an abstract type to a
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// concrete type.
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//
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virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
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static FunctionType *get(const Type *Result,
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const std::vector<const Type*> &Params,
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bool isVarArg);
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const FunctionType *T) { return true; }
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static inline bool classof(const Type *T) {
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return T->getPrimitiveID() == FunctionTyID;
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}
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static inline bool classof(const Value *V) {
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return isa<Type>(V) && classof(cast<const Type>(V));
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}
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};
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// CompositeType - Common super class of ArrayType, StructType, and PointerType
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//
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class CompositeType : public DerivedType {
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protected:
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inline CompositeType(PrimitiveID id) : DerivedType(id) { }
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public:
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// getTypeAtIndex - Given an index value into the type, return the type of the
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// element.
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//
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virtual const Type *getTypeAtIndex(const Value *V) const = 0;
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virtual bool indexValid(const Value *V) const = 0;
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// getIndexType - Return the type required of indices for this composite.
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// For structures, this is ubyte, for arrays, this is uint
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//
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virtual const Type *getIndexType() const = 0;
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const CompositeType *T) { return true; }
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static inline bool classof(const Type *T) {
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return T->getPrimitiveID() == ArrayTyID ||
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T->getPrimitiveID() == StructTyID ||
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T->getPrimitiveID() == PointerTyID;
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}
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static inline bool classof(const Value *V) {
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return isa<Type>(V) && classof(cast<const Type>(V));
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}
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};
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class StructType : public CompositeType {
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public:
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typedef std::vector<PATypeHandle<Type> > ElementTypes;
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private:
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ElementTypes ETypes; // Element types of struct
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StructType(const StructType &); // Do not implement
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const StructType &operator=(const StructType &); // Do not implement
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protected:
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// This should really be private, but it squelches a bogus warning
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// from GCC to make them protected: warning: `class StructType' only
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// defines private constructors and has no friends
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// Private ctor - Only can be created by a static member...
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StructType(const std::vector<const Type*> &Types);
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public:
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inline const ElementTypes &getElementTypes() const { return ETypes; }
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virtual const Type *getContainedType(unsigned i) const {
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return i < ETypes.size() ? ETypes[i].get() : 0;
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}
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virtual unsigned getNumContainedTypes() const { return ETypes.size(); }
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// getTypeAtIndex - Given an index value into the type, return the type of the
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// element. For a structure type, this must be a constant value...
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//
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virtual const Type *getTypeAtIndex(const Value *V) const ;
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virtual bool indexValid(const Value *V) const;
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// getIndexType - Return the type required of indices for this composite.
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// For structures, this is ubyte, for arrays, this is uint
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//
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virtual const Type *getIndexType() const { return Type::UByteTy; }
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// refineAbstractType - Called when a contained type is found to be more
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// concrete - this could potentially change us from an abstract type to a
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// concrete type.
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//
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virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
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static StructType *get(const std::vector<const Type*> &Params);
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const StructType *T) { return true; }
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static inline bool classof(const Type *T) {
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return T->getPrimitiveID() == StructTyID;
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}
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static inline bool classof(const Value *V) {
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return isa<Type>(V) && classof(cast<const Type>(V));
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}
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};
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// SequentialType - This is the superclass of the array and pointer type
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// classes. Both of these represent "arrays" in memory. The array type
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// represents a specifically sized array, pointer types are unsized/unknown size
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// arrays. SequentialType holds the common features of both, which stem from
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// the fact that both lay their components out in memory identically.
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//
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class SequentialType : public CompositeType {
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SequentialType(const SequentialType &); // Do not implement!
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const SequentialType &operator=(const SequentialType &); // Do not implement!
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protected:
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PATypeHandle<Type> ElementType;
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SequentialType(PrimitiveID TID, const Type *ElType)
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: CompositeType(TID), ElementType(PATypeHandle<Type>(ElType, this)) {
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}
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public:
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inline const Type *getElementType() const { return ElementType; }
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virtual const Type *getContainedType(unsigned i) const {
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return i == 0 ? ElementType.get() : 0;
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}
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virtual unsigned getNumContainedTypes() const { return 1; }
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// getTypeAtIndex - Given an index value into the type, return the type of the
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// element. For sequential types, there is only one subtype...
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//
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virtual const Type *getTypeAtIndex(const Value *V) const {
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return ElementType.get();
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}
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virtual bool indexValid(const Value *V) const {
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return V->getType() == Type::UIntTy; // Must be an unsigned int index
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}
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// getIndexType() - Return the type required of indices for this composite.
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// For structures, this is ubyte, for arrays, this is uint
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//
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virtual const Type *getIndexType() const { return Type::UIntTy; }
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const SequentialType *T) { return true; }
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static inline bool classof(const Type *T) {
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return T->getPrimitiveID() == ArrayTyID ||
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T->getPrimitiveID() == PointerTyID;
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}
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static inline bool classof(const Value *V) {
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return isa<Type>(V) && classof(cast<const Type>(V));
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}
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};
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class ArrayType : public SequentialType {
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unsigned NumElements;
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ArrayType(const ArrayType &); // Do not implement
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const ArrayType &operator=(const ArrayType &); // Do not implement
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protected:
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// This should really be private, but it squelches a bogus warning
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// from GCC to make them protected: warning: `class ArrayType' only
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// defines private constructors and has no friends
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// Private ctor - Only can be created by a static member...
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ArrayType(const Type *ElType, unsigned NumEl);
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public:
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inline unsigned getNumElements() const { return NumElements; }
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// refineAbstractType - Called when a contained type is found to be more
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// concrete - this could potentially change us from an abstract type to a
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// concrete type.
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//
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virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
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static ArrayType *get(const Type *ElementType, unsigned NumElements);
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const ArrayType *T) { return true; }
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static inline bool classof(const Type *T) {
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return T->getPrimitiveID() == ArrayTyID;
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}
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static inline bool classof(const Value *V) {
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return isa<Type>(V) && classof(cast<const Type>(V));
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}
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};
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class PointerType : public SequentialType {
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PointerType(const PointerType &); // Do not implement
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const PointerType &operator=(const PointerType &); // Do not implement
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protected:
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// This should really be private, but it squelches a bogus warning
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// from GCC to make them protected: warning: `class PointerType' only
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// defines private constructors and has no friends
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// Private ctor - Only can be created by a static member...
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PointerType(const Type *ElType);
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public:
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// PointerType::get - Named constructor for pointer types...
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static PointerType *get(const Type *ElementType);
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// refineAbstractType - Called when a contained type is found to be more
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// concrete - this could potentially change us from an abstract type to a
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// concrete type.
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//
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virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const PointerType *T) { return true; }
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static inline bool classof(const Type *T) {
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return T->getPrimitiveID() == PointerTyID;
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}
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static inline bool classof(const Value *V) {
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return isa<Type>(V) && classof(cast<const Type>(V));
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}
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};
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class OpaqueType : public DerivedType {
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private:
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OpaqueType(const OpaqueType &); // Do not implement
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const OpaqueType &operator=(const OpaqueType &); // Do not implement
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protected:
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// This should really be private, but it squelches a bogus warning
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// from GCC to make them protected: warning: `class OpaqueType' only
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// defines private constructors and has no friends
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// Private ctor - Only can be created by a static member...
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OpaqueType();
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public:
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// get - Static factory method for the OpaqueType class...
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static OpaqueType *get() {
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return new OpaqueType(); // All opaque types are distinct
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}
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const OpaqueType *T) { return true; }
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static inline bool classof(const Type *T) {
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return T->getPrimitiveID() == OpaqueTyID;
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}
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static inline bool classof(const Value *V) {
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return isa<Type>(V) && classof(cast<Type>(V));
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}
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};
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// Define some inline methods for the AbstractTypeUser.h:PATypeHandle class.
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// These are defined here because they MUST be inlined, yet are dependant on
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// the definition of the Type class. Of course Type derives from Value, which
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// contains an AbstractTypeUser instance, so there is no good way to factor out
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// the code. Hence this bit of uglyness.
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//
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template <class TypeSubClass> void PATypeHandle<TypeSubClass>::addUser() {
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assert(Ty && "Type Handle has a null type!");
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if (Ty->isAbstract())
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cast<DerivedType>(Ty)->addAbstractTypeUser(User);
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}
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template <class TypeSubClass> void PATypeHandle<TypeSubClass>::removeUser() {
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if (Ty->isAbstract())
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cast<DerivedType>(Ty)->removeAbstractTypeUser(User);
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}
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template <class TypeSubClass>
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void PATypeHandle<TypeSubClass>::removeUserFromConcrete() {
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if (!Ty->isAbstract())
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cast<DerivedType>(Ty)->removeAbstractTypeUser(User);
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}
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#endif
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