mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-17 05:29:24 +00:00
* Add support for Opaque & Abstract types.
* Remove silly enum values that are never going to be used * What used to be a types "name" is now it's "description" * Add a new iterator to type to allow users to iterate over subtypes git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@426 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
46b23d92e3
commit
a797d28333
@ -10,6 +10,17 @@
|
||||
//
|
||||
// Types, once allocated, are never free'd.
|
||||
//
|
||||
// Opaque types are simple derived types with no state. There may be many
|
||||
// different Opaque type objects floating around, but two are only considered
|
||||
// identical if they are pointer equals of each other. This allows us to have
|
||||
// two opaque types that end up resolving to different concrete types later.
|
||||
//
|
||||
// Opaque types are also kinda wierd and scary and different because they have
|
||||
// to keep a list of uses of the type. When, through linking, parsing, or
|
||||
// bytecode reading, they become resolved, they need to find and update all
|
||||
// users of the unknown type, causing them to reference a new, more concrete
|
||||
// type. Opaque types are deleted when their use list dwindles to zero users.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
#ifndef LLVM_TYPE_H
|
||||
@ -20,11 +31,12 @@
|
||||
namespace opt {
|
||||
class ConstRules;
|
||||
}
|
||||
class ConstPoolVal;
|
||||
class DerivedType;
|
||||
class MethodType;
|
||||
class ArrayType;
|
||||
class StructType;
|
||||
class PointerType;
|
||||
class StructType;
|
||||
class OpaqueType;
|
||||
|
||||
class Type : public Value {
|
||||
public:
|
||||
@ -44,16 +56,15 @@ public:
|
||||
FloatTyID , DoubleTyID, // 10,11: Floating point types...
|
||||
|
||||
TypeTyID, // 12 : Type definitions
|
||||
LabelTyID , LockTyID, // 13,14: Labels... mutexes...
|
||||
|
||||
// TODO: Kill FillerTyID. It just makes FirstDerivedTyID = 0x10
|
||||
FillerTyID , // 15 : filler
|
||||
LabelTyID , // 13 : Labels...
|
||||
/*LockTyID , */ // 14 : mutex - TODO
|
||||
|
||||
// Derived types... see DerivedTypes.h file...
|
||||
// Make sure FirstDerivedTyID stays up to date!!!
|
||||
MethodTyID , ModuleTyID, // Methods... Modules...
|
||||
ArrayTyID , PointerTyID, // Array... pointer...
|
||||
StructTyID , PackedTyID, // Structure... SIMD 'packed' format...
|
||||
StructTyID , OpaqueTyID, // Structure... Opaque type instances...
|
||||
//PackedTyID , // SIMD 'packed' format... TODO
|
||||
//...
|
||||
|
||||
NumPrimitiveIDs, // Must remain as last defined ID
|
||||
@ -61,8 +72,11 @@ public:
|
||||
};
|
||||
|
||||
private:
|
||||
PrimitiveID ID; // The current base type of this type...
|
||||
unsigned UID; // The unique ID number for this class
|
||||
PrimitiveID ID; // The current base type of this type...
|
||||
unsigned UID; // The unique ID number for this class
|
||||
string Desc; // The printed name of the string...
|
||||
bool Abstract; // True if type contains an OpaqueType
|
||||
bool Recursive; // True if the type is recursive
|
||||
|
||||
// ConstRulesImpl - See Opt/ConstantHandling.h for more info
|
||||
mutable const opt::ConstRules *ConstRulesImpl;
|
||||
@ -70,9 +84,46 @@ private:
|
||||
protected:
|
||||
// ctor is protected, so only subclasses can create Type objects...
|
||||
Type(const string &Name, PrimitiveID id);
|
||||
public:
|
||||
virtual ~Type() {}
|
||||
|
||||
// When types are refined, they update their description to be more concrete.
|
||||
//
|
||||
inline void setDescription(const string &D) { Desc = D; }
|
||||
|
||||
// setName - Associate the name with this type in the symbol table, but don't
|
||||
// set the local name to be equal specified name.
|
||||
//
|
||||
virtual void setName(const string &Name, SymbolTable *ST = 0);
|
||||
|
||||
// Types can become nonabstract later, if they are refined.
|
||||
//
|
||||
inline void setAbstract(bool Val) { Abstract = Val; }
|
||||
|
||||
// Types can become recursive later, if they are refined.
|
||||
//
|
||||
inline void setRecursive(bool Val) { Recursive = Val; }
|
||||
|
||||
public:
|
||||
|
||||
//===--------------------------------------------------------------------===//
|
||||
// Property accessors for dealing with types...
|
||||
//
|
||||
|
||||
// getPrimitiveID - Return the base type of the type. This will return one
|
||||
// of the PrimitiveID enum elements defined above.
|
||||
//
|
||||
inline PrimitiveID getPrimitiveID() const { return ID; }
|
||||
|
||||
// getUniqueID - Returns the UID of the type. This can be thought of as a
|
||||
// small integer version of the pointer to the type class. Two types that are
|
||||
// structurally different have different UIDs. This can be used for indexing
|
||||
// types into an array.
|
||||
//
|
||||
inline unsigned getUniqueID() const { return UID; }
|
||||
|
||||
// getDescription - Return the string representation of the type...
|
||||
inline const string &getDescription() const { return Desc; }
|
||||
|
||||
// isSigned - Return whether a numeric type is signed.
|
||||
virtual bool isSigned() const { return 0; }
|
||||
|
||||
@ -87,8 +138,38 @@ public:
|
||||
//
|
||||
virtual bool isIntegral() const { return 0; }
|
||||
|
||||
inline unsigned getUniqueID() const { return UID; }
|
||||
inline PrimitiveID getPrimitiveID() const { return ID; }
|
||||
// isAbstract - True if the type is either an Opaque type, or is a derived
|
||||
// type that includes an opaque type somewhere in it.
|
||||
//
|
||||
inline bool isAbstract() const { return Abstract; }
|
||||
|
||||
// isRecursive - True if the type graph contains a cycle.
|
||||
//
|
||||
inline bool isRecursive() const { return Recursive; }
|
||||
|
||||
//===--------------------------------------------------------------------===//
|
||||
// Type Iteration support
|
||||
//
|
||||
class TypeIterator;
|
||||
typedef TypeIterator contype_iterator;
|
||||
inline contype_iterator contype_begin() const; // DEFINED BELOW
|
||||
inline contype_iterator contype_end() const; // DEFINED BELOW
|
||||
|
||||
// getContainedType - This method is used to implement the type iterator
|
||||
// (defined a the end of the file). For derived types, this returns the types
|
||||
// 'contained' in the derived type, returning 0 when 'i' becomes invalid. This
|
||||
// allows the user to iterate over the types in a struct, for example, really
|
||||
// easily.
|
||||
//
|
||||
virtual const Type *getContainedType(unsigned i) const { return 0; }
|
||||
|
||||
// getNumContainedTypes - Return the number of types in the derived type
|
||||
virtual unsigned getNumContainedTypes() const { return 0; }
|
||||
|
||||
//===--------------------------------------------------------------------===//
|
||||
// Static members exported by the Type class itself. Useful for getting
|
||||
// instances of Type.
|
||||
//
|
||||
|
||||
// getPrimitiveType/getUniqueIDType - Return a type based on an identifier.
|
||||
static const Type *getPrimitiveType(PrimitiveID IDNumber);
|
||||
@ -98,9 +179,11 @@ public:
|
||||
// for more info on this...
|
||||
//
|
||||
inline const opt::ConstRules *getConstRules() const { return ConstRulesImpl; }
|
||||
inline void setConstRules(const opt::ConstRules *R) const { ConstRulesImpl = R; }
|
||||
inline void setConstRules(const opt::ConstRules *R) const { ConstRulesImpl=R;}
|
||||
|
||||
public: // These are the builtin types that are always available...
|
||||
//===--------------------------------------------------------------------===//
|
||||
// These are the builtin types that are always available...
|
||||
//
|
||||
static const Type *VoidTy , *BoolTy;
|
||||
static const Type *SByteTy, *UByteTy,
|
||||
*ShortTy, *UShortTy,
|
||||
@ -108,7 +191,7 @@ public: // These are the builtin types that are always available...
|
||||
*LongTy , *ULongTy;
|
||||
static const Type *FloatTy, *DoubleTy;
|
||||
|
||||
static const Type *TypeTy , *LabelTy, *LockTy;
|
||||
static const Type *TypeTy , *LabelTy; //, *LockTy;
|
||||
|
||||
// Here are some useful little methods to query what type derived types are
|
||||
// Note that all other types can just compare to see if this == Type::xxxTy;
|
||||
@ -117,6 +200,15 @@ public: // These are the builtin types that are always available...
|
||||
inline bool isPrimitiveType() const { return ID < FirstDerivedTyID; }
|
||||
|
||||
inline bool isLabelType() const { return this == LabelTy; }
|
||||
|
||||
inline const DerivedType *castDerivedType() const {
|
||||
return isDerivedType() ? (const DerivedType*)this : 0;
|
||||
}
|
||||
inline const DerivedType *castDerivedTypeAsserting() const {
|
||||
assert(isDerivedType());
|
||||
return (const DerivedType*)this;
|
||||
}
|
||||
|
||||
inline const MethodType *isMethodType() const {
|
||||
return ID == MethodTyID ? (const MethodType*)this : 0;
|
||||
}
|
||||
@ -130,6 +222,45 @@ public: // These are the builtin types that are always available...
|
||||
inline const StructType *isStructType() const {
|
||||
return ID == StructTyID ? (const StructType*)this : 0;
|
||||
}
|
||||
inline const OpaqueType *isOpaqueType() const {
|
||||
return ID == OpaqueTyID ? (const OpaqueType*)this : 0;
|
||||
}
|
||||
|
||||
private:
|
||||
class TypeIterator : public std::bidirectional_iterator<const Type,
|
||||
ptrdiff_t> {
|
||||
const Type * const Ty;
|
||||
unsigned Idx;
|
||||
|
||||
typedef TypeIterator _Self;
|
||||
public:
|
||||
inline TypeIterator(const Type *ty, unsigned idx) : Ty(ty), Idx(idx) {}
|
||||
inline ~TypeIterator() {}
|
||||
|
||||
inline bool operator==(const _Self& x) const { return Idx == x.Idx; }
|
||||
inline bool operator!=(const _Self& x) const { return !operator==(x); }
|
||||
|
||||
inline pointer operator*() const { return Ty->getContainedType(Idx); }
|
||||
inline pointer operator->() const { return operator*(); }
|
||||
|
||||
inline _Self& operator++() { ++Idx; return *this; } // Preincrement
|
||||
inline _Self operator++(int) { // Postincrement
|
||||
_Self tmp = *this; ++*this; return tmp;
|
||||
}
|
||||
|
||||
inline _Self& operator--() { --Idx; return *this; } // Predecrement
|
||||
inline _Self operator--(int) { // Postdecrement
|
||||
_Self tmp = *this; --*this; return tmp;
|
||||
}
|
||||
};
|
||||
};
|
||||
|
||||
inline Type::TypeIterator Type::contype_begin() const {
|
||||
return TypeIterator(this, 0);
|
||||
}
|
||||
|
||||
inline Type::TypeIterator Type::contype_end() const {
|
||||
return TypeIterator(this, getNumContainedTypes());
|
||||
}
|
||||
|
||||
#endif
|
||||
|
Loading…
Reference in New Issue
Block a user