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* Add destroyConstant stuff to handle module local constants 

* Add classof implementations for more ConstPoolVal subclasses
* Pull null pointer implementation stuff out of ConstPoolPointer into
  a subclass ConstPoolPointerNull
* Implement ConstPoolPointerReference correctly and completely

llvm-svn: 732
This commit is contained in:
Chris Lattner 2001-10-13 06:11:10 +00:00
parent 0b6c38d98f
commit b7420043d6
1 changed files with 103 additions and 2 deletions
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105
llvm/include/llvm/ConstPoolVals.h
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@ -24,6 +24,16 @@ protected:
inline ConstPoolVal(const Type *Ty) : User(Ty, Value::ConstantVal) {}
~ConstPoolVal() {}
// destroyConstant - Called if some element of this constant is no longer
// valid. At this point only other constants may be on the use_list for this
// constant. Any constants on our Use list must also be destroy'd. The
// implementation must be sure to remove the constant from the list of
// available cached constants. Implementations should call
// destroyConstantImpl as the last thing they do, to destroy all users and
// delete this.
//
virtual void destroyConstant() { assert(0 && "Not reached!"); }
void destroyConstantImpl();
public:
// Specialize setName to handle symbol table majik...
virtual void setName(const string &name, SymbolTable *ST = 0);
@ -131,6 +141,13 @@ public:
static bool isValueValidForType(const Type *Ty, int64_t V);
inline int64_t getValue() const { return Val.Signed; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstPoolSInt *) { return true; }
static bool classof(const ConstPoolVal *CPV); // defined in CPV.cpp
static inline bool classof(const Value *V) {
return isa<ConstPoolVal>(V) && classof(cast<ConstPoolVal>(V));
}
};
//===---------------------------------------------------------------------------
@ -148,6 +165,13 @@ public:
static bool isValueValidForType(const Type *Ty, uint64_t V);
inline uint64_t getValue() const { return Val.Unsigned; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstPoolUInt *) { return true; }
static bool classof(const ConstPoolVal *CPV); // defined in CPV.cpp
static inline bool classof(const Value *V) {
return isa<ConstPoolVal>(V) && classof(cast<ConstPoolVal>(V));
}
};
@ -167,6 +191,13 @@ public:
static bool isValueValidForType(const Type *Ty, double V);
inline double getValue() const { return Val; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstPoolFP *) { return true; }
static bool classof(const ConstPoolVal *CPV); // defined in CPV.cpp
static inline bool classof(const Value *V) {
return isa<ConstPoolVal>(V) && classof(cast<ConstPoolVal>(V));
}
};
@ -178,12 +209,21 @@ class ConstPoolArray : public ConstPoolVal {
protected:
ConstPoolArray(const ArrayType *T, const vector<ConstPoolVal*> &Val);
~ConstPoolArray() {}
virtual void destroyConstant();
public:
static ConstPoolArray *get(const ArrayType *T, const vector<ConstPoolVal*> &);
virtual string getStrValue() const;
inline const vector<Use> &getValues() const { return Operands; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstPoolArray *) { return true; }
static bool classof(const ConstPoolVal *CPV); // defined in CPV.cpp
static inline bool classof(const Value *V) {
return isa<ConstPoolVal>(V) && classof(cast<ConstPoolVal>(V));
}
};
@ -195,6 +235,8 @@ class ConstPoolStruct : public ConstPoolVal {
protected:
ConstPoolStruct(const StructType *T, const vector<ConstPoolVal*> &Val);
~ConstPoolStruct() {}
virtual void destroyConstant();
public:
static ConstPoolStruct *get(const StructType *T,
const vector<ConstPoolVal*> &V);
@ -202,6 +244,13 @@ public:
virtual string getStrValue() const;
inline const vector<Use> &getValues() const { return Operands; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstPoolStruct *) { return true; }
static bool classof(const ConstPoolVal *CPV); // defined in CPV.cpp
static inline bool classof(const Value *V) {
return isa<ConstPoolVal>(V) && classof(cast<ConstPoolVal>(V));
}
};
//===---------------------------------------------------------------------------
@ -211,15 +260,46 @@ public:
// a more specific/useful instance, a subclass of ConstPoolPointer should be
// used.
//
class ConstPoolPointerNull;
class ConstPoolPointer : public ConstPoolVal {
ConstPoolPointer(const ConstPoolPointer &); // DO NOT IMPLEMENT
protected:
ConstPoolPointer(const PointerType *T);
inline ConstPoolPointer(const PointerType *T) : ConstPoolVal((const Type*)T){}
~ConstPoolPointer() {}
public:
static ConstPoolPointer *getNull(const PointerType *T);
virtual string getStrValue() const = 0;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstPoolPointer *) { return true; }
static bool classof(const ConstPoolVal *CPV); // defined in CPV.cpp
static inline bool classof(const Value *V) {
return isa<ConstPoolVal>(V) && classof(cast<ConstPoolVal>(V));
}
};
// ConstPoolPointerNull - a constant pointer value that points to null
//
class ConstPoolPointerNull : public ConstPoolPointer {
ConstPoolPointerNull(const ConstPoolPointerNull &); // DO NOT IMPLEMENT
protected:
inline ConstPoolPointerNull(const PointerType *T) : ConstPoolPointer(T) {}
inline ~ConstPoolPointerNull() {}
public:
virtual string getStrValue() const;
static ConstPoolPointerNull *get(const PointerType *T);
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstPoolPointerNull *) { return true; }
static inline bool classof(const ConstPoolPointer *P) {
return P->getNumOperands() == 0;
}
static inline bool classof(const ConstPoolVal *CPV) {
return isa<ConstPoolPointer>(CPV) && classof(cast<ConstPoolPointer>(CPV));
}
static inline bool classof(const Value *V) {
return isa<ConstPoolPointer>(V) && classof(cast<ConstPoolPointer>(V));
}
};
@ -227,10 +307,14 @@ public:
// point to a global value, which lies at a constant, fixed address.
//
class ConstPoolPointerReference : public ConstPoolPointer {
friend class Module; // Modules maintain these references
ConstPoolPointerReference(const ConstPoolPointerReference &); // DNI!
protected:
ConstPoolPointerReference(GlobalValue *GV);
~ConstPoolPointerReference() {}
virtual void destroyConstant() { destroyConstantImpl(); }
public:
static ConstPoolPointerReference *get(GlobalValue *GV);
@ -242,6 +326,23 @@ public:
GlobalValue *getValue() {
return cast<GlobalValue>(Operands[0].get());
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstPoolPointerReference *) { return true; }
static inline bool classof(const ConstPoolPointer *CPV) {
return CPV->getNumOperands() == 1;
}
static inline bool classof(const ConstPoolVal *CPV) {
return isa<ConstPoolPointer>(CPV) && classof(cast<ConstPoolPointer>(CPV));
}
static inline bool classof(const Value *V) {
return isa<ConstPoolPointer>(V) && classof(cast<ConstPoolPointer>(V));
}
// WARNING: Only to be used by Bytecode & Assembly Parsers! USER CODE SHOULD
// NOT USE THIS!!
void mutateReference(GlobalValue *NewGV);
// END WARNING!!
};