class StructType;
class PointerType;
class VectorType;
+class SequentialType;
template<class ConstantClass, class TypeClass, class ValType>
struct ConstantCreator;
template<class ConstantClass, class TypeClass>
+struct ConstantArrayCreator;
+template<class ConstantClass, class TypeClass>
struct ConvertConstantType;
//===----------------------------------------------------------------------===//
/// represents both boolean and integral constants.
/// @brief Class for constant integers.
class ConstantInt : public Constant {
+ virtual void anchor();
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
ConstantInt(const ConstantInt &); // DO NOT IMPLEMENT
ConstantInt(IntegerType *Ty, const APInt& V);
///
class ConstantFP : public Constant {
APFloat Val;
+ virtual void anchor();
void *operator new(size_t, unsigned);// DO NOT IMPLEMENT
ConstantFP(const ConstantFP &); // DO NOT IMPLEMENT
friend class LLVMContextImpl;
/// ConstantAggregateZero - All zero aggregate value
///
class ConstantAggregateZero : public Constant {
- friend struct ConstantCreator<ConstantAggregateZero, Type, char>;
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
ConstantAggregateZero(const ConstantAggregateZero &); // DO NOT IMPLEMENT
protected:
return User::operator new(s, 0);
}
public:
- static ConstantAggregateZero* get(Type *Ty);
+ static ConstantAggregateZero *get(Type *Ty);
virtual void destroyConstant();
+ /// getSequentialElement - If this CAZ has array or vector type, return a zero
+ /// with the right element type.
+ Constant *getSequentialElement() const;
+
+ /// getStructElement - If this CAZ has struct type, return a zero with the
+ /// right element type for the specified element.
+ Constant *getStructElement(unsigned Elt) const;
+
+ /// getElementValue - Return a zero of the right value for the specified GEP
+ /// index.
+ Constant *getElementValue(Constant *C) const;
+
+ /// getElementValue - Return a zero of the right value for the specified GEP
+ /// index.
+ Constant *getElementValue(unsigned Idx) const;
+
/// Methods for support type inquiry through isa, cast, and dyn_cast:
///
static bool classof(const ConstantAggregateZero *) { return true; }
/// ConstantArray - Constant Array Declarations
///
class ConstantArray : public Constant {
- friend struct ConstantCreator<ConstantArray, ArrayType,
- std::vector<Constant*> >;
+ friend struct ConstantArrayCreator<ConstantArray, ArrayType>;
ConstantArray(const ConstantArray &); // DO NOT IMPLEMENT
protected:
ConstantArray(ArrayType *T, ArrayRef<Constant *> Val);
// ConstantArray accessors
static Constant *get(ArrayType *T, ArrayRef<Constant*> V);
- /// This method constructs a ConstantArray and initializes it with a text
- /// string. The default behavior (AddNull==true) causes a null terminator to
- /// be placed at the end of the array. This effectively increases the length
- /// of the array by one (you've been warned). However, in some situations
- /// this is not desired so if AddNull==false then the string is copied without
- /// null termination.
- static Constant *get(LLVMContext &Context, StringRef Initializer,
- bool AddNull = true);
-
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant);
return reinterpret_cast<ArrayType*>(Value::getType());
}
- /// isString - This method returns true if the array is an array of i8 and
- /// the elements of the array are all ConstantInt's.
- bool isString() const;
-
- /// isCString - This method returns true if the array is a string (see
- /// @verbatim
- /// isString) and it ends in a null byte \0 and does not contains any other
- /// @endverbatim
- /// null bytes except its terminator.
- bool isCString() const;
-
- /// getAsString - If this array is isString(), then this method converts the
- /// array to an std::string and returns it. Otherwise, it asserts out.
- ///
- std::string getAsString() const;
-
- /// getAsCString - If this array is isCString(), then this method converts the
- /// array (without the trailing null byte) to an std::string and returns it.
- /// Otherwise, it asserts out.
- ///
- std::string getAsCString() const;
-
virtual void destroyConstant();
virtual void replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U);
// ConstantStruct - Constant Struct Declarations
//
class ConstantStruct : public Constant {
- friend struct ConstantCreator<ConstantStruct, StructType,
- std::vector<Constant*> >;
+ friend struct ConstantArrayCreator<ConstantStruct, StructType>;
ConstantStruct(const ConstantStruct &); // DO NOT IMPLEMENT
protected:
ConstantStruct(StructType *T, ArrayRef<Constant *> Val);
/// ConstantVector - Constant Vector Declarations
///
class ConstantVector : public Constant {
- friend struct ConstantCreator<ConstantVector, VectorType,
- std::vector<Constant*> >;
+ friend struct ConstantArrayCreator<ConstantVector, VectorType>;
ConstantVector(const ConstantVector &); // DO NOT IMPLEMENT
protected:
ConstantVector(VectorType *T, ArrayRef<Constant *> Val);
// ConstantVector accessors
static Constant *get(ArrayRef<Constant*> V);
+ /// getSplat - Return a ConstantVector with the specified constant in each
+ /// element.
+ static Constant *getSplat(unsigned NumElts, Constant *Elt);
+
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant);
/// ConstantPointerNull - a constant pointer value that points to null
///
class ConstantPointerNull : public Constant {
- friend struct ConstantCreator<ConstantPointerNull, PointerType, char>;
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
ConstantPointerNull(const ConstantPointerNull &); // DO NOT IMPLEMENT
protected:
return V->getValueID() == ConstantPointerNullVal;
}
};
+
+//===----------------------------------------------------------------------===//
+/// ConstantDataSequential - A vector or array constant whose element type is a
+/// simple 1/2/4/8-byte integer or float/double, and whose elements are just
+/// simple data values (i.e. ConstantInt/ConstantFP). This Constant node has no
+/// operands because it stores all of the elements of the constant as densely
+/// packed data, instead of as Value*'s.
+///
+/// This is the common base class of ConstantDataArray and ConstantDataVector.
+///
+class ConstantDataSequential : public Constant {
+ friend class LLVMContextImpl;
+ /// DataElements - A pointer to the bytes underlying this constant (which is
+ /// owned by the uniquing StringMap).
+ const char *DataElements;
+
+ /// Next - This forms a link list of ConstantDataSequential nodes that have
+ /// the same value but different type. For example, 0,0,0,1 could be a 4
+ /// element array of i8, or a 1-element array of i32. They'll both end up in
+ /// the same StringMap bucket, linked up.
+ ConstantDataSequential *Next;
+ void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
+ ConstantDataSequential(const ConstantDataSequential &); // DO NOT IMPLEMENT
+protected:
+ explicit ConstantDataSequential(Type *ty, ValueTy VT, const char *Data)
+ : Constant(ty, VT, 0, 0), DataElements(Data), Next(0) {}
+ ~ConstantDataSequential() { delete Next; }
+
+ static Constant *getImpl(StringRef Bytes, Type *Ty);
+
+protected:
+ // allocate space for exactly zero operands.
+ void *operator new(size_t s) {
+ return User::operator new(s, 0);
+ }
+public:
+
+ /// isElementTypeCompatible - Return true if a ConstantDataSequential can be
+ /// formed with a vector or array of the specified element type.
+ /// ConstantDataArray only works with normal float and int types that are
+ /// stored densely in memory, not with things like i42 or x86_f80.
+ static bool isElementTypeCompatible(const Type *Ty);
+
+ /// getElementAsInteger - If this is a sequential container of integers (of
+ /// any size), return the specified element in the low bits of a uint64_t.
+ uint64_t getElementAsInteger(unsigned i) const;
+
+ /// getElementAsAPFloat - If this is a sequential container of floating point
+ /// type, return the specified element as an APFloat.
+ APFloat getElementAsAPFloat(unsigned i) const;
+
+ /// getElementAsFloat - If this is an sequential container of floats, return
+ /// the specified element as a float.
+ float getElementAsFloat(unsigned i) const;
+
+ /// getElementAsDouble - If this is an sequential container of doubles, return
+ /// the specified element as a double.
+ double getElementAsDouble(unsigned i) const;
+
+ /// getElementAsConstant - Return a Constant for a specified index's element.
+ /// Note that this has to compute a new constant to return, so it isn't as
+ /// efficient as getElementAsInteger/Float/Double.
+ Constant *getElementAsConstant(unsigned i) const;
+
+ /// getType - Specialize the getType() method to always return a
+ /// SequentialType, which reduces the amount of casting needed in parts of the
+ /// compiler.
+ inline SequentialType *getType() const {
+ return reinterpret_cast<SequentialType*>(Value::getType());
+ }
+
+ /// getElementType - Return the element type of the array/vector.
+ Type *getElementType() const;
+
+ /// getNumElements - Return the number of elements in the array or vector.
+ unsigned getNumElements() const;
+
+ /// getElementByteSize - Return the size (in bytes) of each element in the
+ /// array/vector. The size of the elements is known to be a multiple of one
+ /// byte.
+ uint64_t getElementByteSize() const;
+
+
+ /// isString - This method returns true if this is an array of i8.
+ bool isString() const;
+
+ /// isCString - This method returns true if the array "isString", ends with a
+ /// nul byte, and does not contains any other nul bytes.
+ bool isCString() const;
+
+ /// getAsString - If this array is isString(), then this method returns the
+ /// array as a StringRef. Otherwise, it asserts out.
+ ///
+ StringRef getAsString() const {
+ assert(isString() && "Not a string");
+ return getRawDataValues();
+ }
+
+ /// getAsCString - If this array is isCString(), then this method returns the
+ /// array (without the trailing null byte) as a StringRef. Otherwise, it
+ /// asserts out.
+ ///
+ StringRef getAsCString() const {
+ assert(isCString() && "Isn't a C string");
+ StringRef Str = getAsString();
+ return Str.substr(0, Str.size()-1);
+ }
+
+ /// getRawDataValues - Return the raw, underlying, bytes of this data. Note
+ /// that this is an extremely tricky thing to work with, as it exposes the
+ /// host endianness of the data elements.
+ StringRef getRawDataValues() const;
+
+ virtual void destroyConstant();
+
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
+ ///
+ static bool classof(const ConstantDataSequential *) { return true; }
+ static bool classof(const Value *V) {
+ return V->getValueID() == ConstantDataArrayVal ||
+ V->getValueID() == ConstantDataVectorVal;
+ }
+private:
+ const char *getElementPointer(unsigned Elt) const;
+};
+
+//===----------------------------------------------------------------------===//
+/// ConstantDataArray - An array constant whose element type is a simple
+/// 1/2/4/8-byte integer or float/double, and whose elements are just simple
+/// data values (i.e. ConstantInt/ConstantFP). This Constant node has no
+/// operands because it stores all of the elements of the constant as densely
+/// packed data, instead of as Value*'s.
+class ConstantDataArray : public ConstantDataSequential {
+ void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
+ ConstantDataArray(const ConstantDataArray &); // DO NOT IMPLEMENT
+ virtual void anchor();
+ friend class ConstantDataSequential;
+ explicit ConstantDataArray(Type *ty, const char *Data)
+ : ConstantDataSequential(ty, ConstantDataArrayVal, Data) {}
+protected:
+ // allocate space for exactly zero operands.
+ void *operator new(size_t s) {
+ return User::operator new(s, 0);
+ }
+public:
+
+ /// get() constructors - Return a constant with array type with an element
+ /// count and element type matching the ArrayRef passed in. Note that this
+ /// can return a ConstantAggregateZero object.
+ static Constant *get(LLVMContext &Context, ArrayRef<uint8_t> Elts);
+ static Constant *get(LLVMContext &Context, ArrayRef<uint16_t> Elts);
+ static Constant *get(LLVMContext &Context, ArrayRef<uint32_t> Elts);
+ static Constant *get(LLVMContext &Context, ArrayRef<uint64_t> Elts);
+ static Constant *get(LLVMContext &Context, ArrayRef<float> Elts);
+ static Constant *get(LLVMContext &Context, ArrayRef<double> Elts);
+
+ /// getString - This method constructs a CDS and initializes it with a text
+ /// string. The default behavior (AddNull==true) causes a null terminator to
+ /// be placed at the end of the array (increasing the length of the string by
+ /// one more than the StringRef would normally indicate. Pass AddNull=false
+ /// to disable this behavior.
+ static Constant *getString(LLVMContext &Context, StringRef Initializer,
+ bool AddNull = true);
+
+ /// getType - Specialize the getType() method to always return an ArrayType,
+ /// which reduces the amount of casting needed in parts of the compiler.
+ ///
+ inline ArrayType *getType() const {
+ return reinterpret_cast<ArrayType*>(Value::getType());
+ }
+
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
+ ///
+ static bool classof(const ConstantDataArray *) { return true; }
+ static bool classof(const Value *V) {
+ return V->getValueID() == ConstantDataArrayVal;
+ }
+};
+
+//===----------------------------------------------------------------------===//
+/// ConstantDataVector - A vector constant whose element type is a simple
+/// 1/2/4/8-byte integer or float/double, and whose elements are just simple
+/// data values (i.e. ConstantInt/ConstantFP). This Constant node has no
+/// operands because it stores all of the elements of the constant as densely
+/// packed data, instead of as Value*'s.
+class ConstantDataVector : public ConstantDataSequential {
+ void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
+ ConstantDataVector(const ConstantDataVector &); // DO NOT IMPLEMENT
+ virtual void anchor();
+ friend class ConstantDataSequential;
+ explicit ConstantDataVector(Type *ty, const char *Data)
+ : ConstantDataSequential(ty, ConstantDataVectorVal, Data) {}
+protected:
+ // allocate space for exactly zero operands.
+ void *operator new(size_t s) {
+ return User::operator new(s, 0);
+ }
+public:
+
+ /// get() constructors - Return a constant with vector type with an element
+ /// count and element type matching the ArrayRef passed in. Note that this
+ /// can return a ConstantAggregateZero object.
+ static Constant *get(LLVMContext &Context, ArrayRef<uint8_t> Elts);
+ static Constant *get(LLVMContext &Context, ArrayRef<uint16_t> Elts);
+ static Constant *get(LLVMContext &Context, ArrayRef<uint32_t> Elts);
+ static Constant *get(LLVMContext &Context, ArrayRef<uint64_t> Elts);
+ static Constant *get(LLVMContext &Context, ArrayRef<float> Elts);
+ static Constant *get(LLVMContext &Context, ArrayRef<double> Elts);
+
+ /// getSplat - Return a ConstantVector with the specified constant in each
+ /// element. The specified constant has to be a of a compatible type (i8/i16/
+ /// i32/i64/float/double) and must be a ConstantFP or ConstantInt.
+ static Constant *getSplat(unsigned NumElts, Constant *Elt);
+
+ /// getSplatValue - If this is a splat constant, meaning that all of the
+ /// elements have the same value, return that value. Otherwise return NULL.
+ Constant *getSplatValue() const;
+
+ /// getType - Specialize the getType() method to always return a VectorType,
+ /// which reduces the amount of casting needed in parts of the compiler.
+ ///
+ inline VectorType *getType() const {
+ return reinterpret_cast<VectorType*>(Value::getType());
+ }
+
+ /// Methods for support type inquiry through isa, cast, and dyn_cast:
+ ///
+ static bool classof(const ConstantDataVector *) { return true; }
+ static bool classof(const Value *V) {
+ return V->getValueID() == ConstantDataVectorVal;
+ }
+};
+
+
/// BlockAddress - The address of a basic block.
///
/// LangRef.html#undefvalues for details.
///
class UndefValue : public Constant {
- friend struct ConstantCreator<UndefValue, Type, char>;
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
UndefValue(const UndefValue &); // DO NOT IMPLEMENT
protected:
///
static UndefValue *get(Type *T);
+ /// getSequentialElement - If this Undef has array or vector type, return a
+ /// undef with the right element type.
+ UndefValue *getSequentialElement() const;
+
+ /// getStructElement - If this undef has struct type, return a undef with the
+ /// right element type for the specified element.
+ UndefValue *getStructElement(unsigned Elt) const;
+
+ /// getElementValue - Return an undef of the right value for the specified GEP
+ /// index.
+ UndefValue *getElementValue(Constant *C) const;
+
+ /// getElementValue - Return an undef of the right value for the specified GEP
+ /// index.
+ UndefValue *getElementValue(unsigned Idx) const;
+
virtual void destroyConstant();
/// Methods for support type inquiry through isa, cast, and dyn_cast:
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