class StructType;
class PointerType;
+
//===---------------------------------------------------------------------------
-// ConstantBool - Boolean Values
-//
-class ConstantBool : public Constant {
+/// ConstantIntegral - Shared superclass of boolean and integer constants.
+///
+/// This class just defines some common interfaces to be implemented.
+///
+class ConstantIntegral : public Constant {
+protected:
+ ConstantIntegral(const Type *Ty) : Constant(Ty) {}
+public:
+
+ /// isNullValue - Return true if this is the value that would be returned by
+ /// getNullValue.
+ ///
+ virtual bool isNullValue() const = 0;
+
+ /// isMaxValue - Return true if this is the largest value that may be
+ /// represented by this type.
+ ///
+ virtual bool isMaxValue() const = 0;
+
+ /// isMinValue - Return true if this is the smallest value that may be
+ /// represented by this type.
+ ///
+ virtual bool isMinValue() const = 0;
+
+ /// isAllOnesValue - Return true if every bit in this constant is set to true.
+ ///
+ virtual bool isAllOnesValue() const = 0;
+
+ /// Static constructor to get the maximum/minimum/allones constant of
+ /// specified (integral) type...
+ ///
+ static ConstantIntegral *getMaxValue(const Type *Ty);
+ static ConstantIntegral *getMinValue(const Type *Ty);
+ static ConstantIntegral *getAllOnesValue(const Type *Ty);
+
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
+ static inline bool classof(const ConstantIntegral *) { return true; }
+ static bool classof(const Constant *CPV); // defined in Constants.cpp
+ static inline bool classof(const Value *V) {
+ return isa<Constant>(V) && classof(cast<Constant>(V));
+ }
+};
+
+
+//===---------------------------------------------------------------------------
+/// ConstantBool - Boolean Values
+///
+class ConstantBool : public ConstantIntegral {
bool Val;
ConstantBool(bool V);
~ConstantBool() {}
public:
static ConstantBool *True, *False; // The True & False values
- // Factory objects - Return objects of the specified value
+ /// get() - Static factory methods - Return objects of the specified value
static ConstantBool *get(bool Value) { return Value ? True : False; }
static ConstantBool *get(const Type *Ty, bool Value) { return get(Value); }
- // inverted - Return the opposite value of the current value.
+ /// inverted - Return the opposite value of the current value.
inline ConstantBool *inverted() const { return (this==True) ? False : True; }
+ /// getValue - return the boolean value of this constant.
+ ///
inline bool getValue() const { return Val; }
- // isNullValue - Return true if this is the value that would be returned by
- // getNullValue.
+ /// isNullValue - Return true if this is the value that would be returned by
+ /// getNullValue.
+ ///
virtual bool isNullValue() const { return this == False; }
+ virtual bool isMaxValue() const { return this == True; }
+ virtual bool isMinValue() const { return this == False; }
+ virtual bool isAllOnesValue() const { return this == True; }
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstantBool *) { return true; }
static bool classof(const Constant *CPV) {
return (CPV == True) | (CPV == False);
//===---------------------------------------------------------------------------
-// ConstantInt - Superclass of ConstantSInt & ConstantUInt, to make dealing
-// with integral constants easier.
-//
-class ConstantInt : public Constant {
+/// ConstantInt - Superclass of ConstantSInt & ConstantUInt, to make dealing
+/// with integral constants easier.
+///
+class ConstantInt : public ConstantIntegral {
protected:
union {
int64_t Signed;
ConstantInt(const Type *Ty, uint64_t V);
~ConstantInt() {}
public:
- // equalsInt - Provide a helper method that can be used to determine if the
- // constant contained within is equal to a constant. This only works for very
- // small values, because this is all that can be represented with all types.
- //
+ /// equalsInt - Provide a helper method that can be used to determine if the
+ /// constant contained within is equal to a constant. This only works for
+ /// very small values, because this is all that can be represented with all
+ /// types.
+ ///
bool equalsInt(unsigned char V) const {
assert(V <= 127 &&
"equals: Can only be used with very small positive constants!");
return Val.Unsigned == V;
}
- // ConstantInt::get static method: return a constant pool int with the
- // specified value. as above, we work only with very small values here.
- //
+ /// ConstantInt::get static method: return a ConstantInt with the specified
+ /// value. as above, we work only with very small values here.
+ ///
static ConstantInt *get(const Type *Ty, unsigned char V);
- // isNullValue - Return true if this is the value that would be returned by
- // getNullValue.
+ /// isNullValue - Return true if this is the value that would be returned by
+ /// getNullValue.
virtual bool isNullValue() const { return Val.Unsigned == 0; }
+ virtual bool isAllOnesValue() const { return Val.Signed == -1; }
+ virtual bool isMaxValue() const = 0;
+ virtual bool isMinValue() const = 0;
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstantInt *) { return true; }
- static bool classof(const Constant *CPV); // defined in CPV.cpp
+ static bool classof(const Constant *CPV); // defined in Constants.cpp
static inline bool classof(const Value *V) {
return isa<Constant>(V) && classof(cast<Constant>(V));
}
//===---------------------------------------------------------------------------
-// ConstantSInt - Signed Integer Values [sbyte, short, int, long]
-//
+/// ConstantSInt - Signed Integer Values [sbyte, short, int, long]
+///
class ConstantSInt : public ConstantInt {
ConstantSInt(const ConstantSInt &); // DO NOT IMPLEMENT
protected:
ConstantSInt(const Type *Ty, int64_t V);
~ConstantSInt() {}
public:
+ /// get() - Static factory methods - Return objects of the specified value
static ConstantSInt *get(const Type *Ty, int64_t V);
+ /// isValueValidForType - return true if Ty is big enough to represent V.
static bool isValueValidForType(const Type *Ty, int64_t V);
+
+ /// getValue - return the underlying value of this constant.
inline int64_t getValue() const { return Val.Signed; }
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ /// isMaxValue - Return true if this is the largest value that may be
+ /// represented by this type.
+ ///
+ virtual bool isMaxValue() const {
+ int64_t V = getValue();
+ if (V < 0) return false; // Be careful about wrap-around on 'long's
+ ++V;
+ return !isValueValidForType(getType(), V) || V < 0;
+ }
+
+ /// isMinValue - Return true if this is the smallest value that may be
+ /// represented by this type.
+ ///
+ virtual bool isMinValue() const {
+ int64_t V = getValue();
+ if (V > 0) return false; // Be careful about wrap-around on 'long's
+ --V;
+ return !isValueValidForType(getType(), V) || V > 0;
+ }
+
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstantSInt *) { return true; }
- static bool classof(const Constant *CPV); // defined in CPV.cpp
+ static bool classof(const Constant *CPV); // defined in Constants.cpp
static inline bool classof(const Value *V) {
return isa<Constant>(V) && classof(cast<Constant>(V));
}
};
//===---------------------------------------------------------------------------
-// ConstantUInt - Unsigned Integer Values [ubyte, ushort, uint, ulong]
-//
+/// ConstantUInt - Unsigned Integer Values [ubyte, ushort, uint, ulong]
+///
class ConstantUInt : public ConstantInt {
ConstantUInt(const ConstantUInt &); // DO NOT IMPLEMENT
protected:
ConstantUInt(const Type *Ty, uint64_t V);
~ConstantUInt() {}
public:
+ /// get() - Static factory methods - Return objects of the specified value
static ConstantUInt *get(const Type *Ty, uint64_t V);
+ /// isValueValidForType - return true if Ty is big enough to represent V.
static bool isValueValidForType(const Type *Ty, uint64_t V);
+
+ /// getValue - return the underlying value of this constant.
inline uint64_t getValue() const { return Val.Unsigned; }
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ /// isMaxValue - Return true if this is the largest value that may be
+ /// represented by this type.
+ ///
+ virtual bool isMaxValue() const { return isAllOnesValue(); }
+ virtual bool isMinValue() const { return getValue() == 0; }
+
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstantUInt *) { return true; }
- static bool classof(const Constant *CPV); // defined in CPV.cpp
+ static bool classof(const Constant *CPV); // defined in Constants.cpp
static inline bool classof(const Value *V) {
return isa<Constant>(V) && classof(cast<Constant>(V));
}
//===---------------------------------------------------------------------------
-// ConstantFP - Floating Point Values [float, double]
-//
+/// ConstantFP - Floating Point Values [float, double]
+///
class ConstantFP : public Constant {
double Val;
ConstantFP(const ConstantFP &); // DO NOT IMPLEMENT
ConstantFP(const Type *Ty, double V);
~ConstantFP() {}
public:
+ /// get() - Static factory methods - Return objects of the specified value
static ConstantFP *get(const Type *Ty, double V);
+ /// isValueValidForType - return true if Ty is big enough to represent V.
static bool isValueValidForType(const Type *Ty, double V);
inline double getValue() const { return Val; }
- // isNullValue - Return true if this is the value that would be returned by
- // getNullValue.
+ /// isNullValue - Return true if this is the value that would be returned by
+ /// getNullValue.
virtual bool isNullValue() const { return Val == 0; }
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstantFP *) { return true; }
- static bool classof(const Constant *CPV); // defined in CPV.cpp
+ static bool classof(const Constant *CPV); // defined in Constants.cpp
static inline bool classof(const Value *V) {
return isa<Constant>(V) && classof(cast<Constant>(V));
}
//===---------------------------------------------------------------------------
-// ConstantArray - Constant Array Declarations
-//
+/// ConstantArray - Constant Array Declarations
+///
class ConstantArray : public Constant {
ConstantArray(const ConstantArray &); // DO NOT IMPLEMENT
protected:
ConstantArray(const ArrayType *T, const std::vector<Constant*> &Val);
~ConstantArray() {}
- virtual void destroyConstant();
public:
+ /// get() - Static factory methods - Return objects of the specified value
static ConstantArray *get(const ArrayType *T, const std::vector<Constant*> &);
static ConstantArray *get(const std::string &Initializer);
+ /// getType - Specialize the getType() method to always return an ArrayType,
+ /// which reduces the amount of casting needed in parts of the compiler.
+ ///
inline const ArrayType *getType() const {
return (ArrayType*)Value::getType();
}
+ /// getAsString - If the sub-element type of this array is either sbyte or
+ /// ubyte, then this method converts the array to an std::string and returns
+ /// it. Otherwise, it asserts out.
+ ///
+ std::string getAsString() const;
+
+ /// getValues - Return a vector of the component constants that make up this
+ /// array.
inline const std::vector<Use> &getValues() const { return Operands; }
- // isNullValue - Return true if this is the value that would be returned by
- // getNullValue.
+ /// isNullValue - Return true if this is the value that would be returned by
+ /// getNullValue.
virtual bool isNullValue() const { return false; }
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ virtual void destroyConstant();
+ virtual void replaceUsesOfWithOnConstant(Value *From, Value *To);
+
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstantArray *) { return true; }
- static bool classof(const Constant *CPV); // defined in CPV.cpp
+ static bool classof(const Constant *CPV); // defined in Constants.cpp
static inline bool classof(const Value *V) {
return isa<Constant>(V) && classof(cast<Constant>(V));
}
ConstantStruct(const StructType *T, const std::vector<Constant*> &Val);
~ConstantStruct() {}
- virtual void destroyConstant();
public:
+ /// get() - Static factory methods - Return objects of the specified value
static ConstantStruct *get(const StructType *T,
const std::vector<Constant*> &V);
+ /// getType() specialization - Reduce amount of casting...
inline const StructType *getType() const {
return (StructType*)Value::getType();
}
+ /// getValues - Return a vector of the component constants that make up this
+ /// structure.
inline const std::vector<Use> &getValues() const { return Operands; }
- // isNullValue - Return true if this is the value that would be returned by
- // getNullValue.
+ /// isNullValue - Return true if this is the value that would be returned by
+ /// getNullValue.
virtual bool isNullValue() const { return false; }
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ virtual void destroyConstant();
+ virtual void replaceUsesOfWithOnConstant(Value *From, Value *To);
+
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstantStruct *) { return true; }
- static bool classof(const Constant *CPV); // defined in CPV.cpp
+ static bool classof(const Constant *CPV); // defined in Constants.cpp
static inline bool classof(const Value *V) {
return isa<Constant>(V) && classof(cast<Constant>(V));
}
};
//===---------------------------------------------------------------------------
-// ConstantPointer - Constant Pointer Declarations
-//
-// The ConstantPointer class represents a null pointer of a specific type. For
-// a more specific/useful instance, a subclass of ConstantPointer should be
-// used.
-//
+/// ConstantPointer - Constant Pointer Declarations
+///
+/// The ConstantPointer class represents a null pointer of a specific type. For
+/// a more specific/useful instance, a subclass of ConstantPointer should be
+/// used.
+///
class ConstantPointer : public Constant {
ConstantPointer(const ConstantPointer &); // DO NOT IMPLEMENT
protected:
return (PointerType*)Value::getType();
}
- // isNullValue - Return true if this is the value that would be returned by
- // getNullValue.
+ /// isNullValue - Return true if this is the value that would be returned by
+ /// getNullValue.
virtual bool isNullValue() const { return false; }
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstantPointer *) { return true; }
static bool classof(const Constant *CPV); // defined in Constants.cpp
static inline bool classof(const Value *V) {
}
};
-// ConstantPointerNull - a constant pointer value that points to null
-//
+/// ConstantPointerNull - a constant pointer value that points to null
+///
class ConstantPointerNull : public ConstantPointer {
ConstantPointerNull(const ConstantPointerNull &); // DO NOT IMPLEMENT
protected:
inline ~ConstantPointerNull() {}
public:
+ /// get() - Static factory methods - Return objects of the specified value
static ConstantPointerNull *get(const PointerType *T);
- // isNullValue - Return true if this is the value that would be returned by
- // getNullValue.
+ /// isNullValue - Return true if this is the value that would be returned by
+ /// getNullValue.
virtual bool isNullValue() const { return true; }
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ virtual void destroyConstant();
+
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstantPointerNull *) { return true; }
static inline bool classof(const ConstantPointer *P) {
return (P->getNumOperands() == 0 && P->isNullValue());
};
-// ConstantPointerRef - a constant pointer value that is initialized to
-// point to a global value, which lies at a constant, fixed address.
-//
+/// ConstantPointerRef - a constant pointer value that is initialized to
+/// point to a global value, which lies at a constant, fixed address.
+///
class ConstantPointerRef : public ConstantPointer {
friend class Module; // Modules maintain these references
ConstantPointerRef(const ConstantPointerRef &); // DNI!
protected:
ConstantPointerRef(GlobalValue *GV);
~ConstantPointerRef() {}
-
- virtual void destroyConstant() { destroyConstantImpl(); }
public:
+ /// get() - Static factory methods - Return objects of the specified value
static ConstantPointerRef *get(GlobalValue *GV);
const GlobalValue *getValue() const {
return cast<GlobalValue>(Operands[0].get());
}
+
GlobalValue *getValue() {
return cast<GlobalValue>(Operands[0].get());
}
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+ virtual void destroyConstant();
+ virtual void replaceUsesOfWithOnConstant(Value *From, Value *To);
+
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstantPointerRef *) { return true; }
static inline bool classof(const ConstantPointer *CPV) {
// check for a single operand (the target value)
static inline bool classof(const Value *V) {
return isa<ConstantPointer>(V) && classof(cast<ConstantPointer>(V));
}
-
- // WARNING: Only to be used by Bytecode & Assembly Parsers! USER CODE SHOULD
- // NOT USE THIS!!
- // Returns the number of uses of OldV that were replaced.
- virtual unsigned mutateReferences(Value* OldV, Value *NewV);
- // END WARNING!!
};
const Type *DestTy);
~ConstantExpr() {}
- virtual void destroyConstant();
-
public:
// Static methods to construct a ConstantExpr of different kinds.
- // Unary constant expr - Use with unary operators and casts
- static ConstantExpr *get(unsigned Opcode, Constant *C, const Type *Ty);
+ /// Cast constant expr
+ static ConstantExpr *getCast(Constant *C, const Type *Ty);
- // Binary constant expr - Use with binary operators...
+ /// Binary constant expr - Use with binary operators...
static ConstantExpr *get(unsigned Opcode, Constant *C1, Constant *C2);
- // Getelementptr form...
+ /// Getelementptr form...
static ConstantExpr *getGetElementPtr(Constant *C,
const std::vector<Constant*> &IdxList);
- // isNullValue - Return true if this is the value that would be returned by
- // getNullValue.
+ /// isNullValue - Return true if this is the value that would be returned by
+ /// getNullValue.
virtual bool isNullValue() const { return false; }
- // getOpcode - Return the opcode at the root of this constant expression
+ /// getOpcode - Return the opcode at the root of this constant expression
unsigned getOpcode() const { return iType; }
- // getOpcodeName - Return a string representation for an opcode.
+ /// getOpcodeName - Return a string representation for an opcode.
const char *getOpcodeName() const;
- // isConstantExpr - Return true if this is a ConstantExpr
+ /// isConstantExpr - Return true if this is a ConstantExpr
virtual bool isConstantExpr() const { return true; }
-
- // Methods for support type inquiry through isa, cast, and dyn_cast:
+
+ virtual void destroyConstant();
+ virtual void replaceUsesOfWithOnConstant(Value *From, Value *To);
+
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const ConstantExpr *) { return true; }
static inline bool classof(const Constant *CPV) {
return CPV->isConstantExpr();
static inline bool classof(const Value *V) {
return isa<Constant>(V) && classof(cast<Constant>(V));
}
-
-public:
- // WARNING: Only to be used by Bytecode & Assembly Parsers! USER CODE SHOULD
- // NOT USE THIS!!
- // Returns the number of uses of OldV that were replaced.
- virtual unsigned mutateReferences(Value* OldV, Value *NewV);
- // END WARNING!!
};
-
#endif
projects / oota-llvm.git / blobdiff