mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-11 08:07:22 +00:00
ab0e04c2f2
want to do bitwise inspection of integer types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26032 91177308-0d34-0410-b5e6-96231b3b80d8
666 lines
25 KiB
C++
666 lines
25 KiB
C++
//===-- llvm/Constants.h - Constant class subclass definitions --*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains the declarations for the subclasses of Constant, which
|
|
// represent the different flavors of constant values that live in LLVM. Note
|
|
// that Constants are immutable (once created they never change) and are fully
|
|
// shared by structural equivalence. This means that two structurally
|
|
// equivalent constants will always have the same address. Constant's are
|
|
// created on demand as needed and never deleted: thus clients don't have to
|
|
// worry about the lifetime of the objects.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CONSTANTS_H
|
|
#define LLVM_CONSTANTS_H
|
|
|
|
#include "llvm/Constant.h"
|
|
#include "llvm/Type.h"
|
|
|
|
namespace llvm {
|
|
|
|
class ArrayType;
|
|
class StructType;
|
|
class PointerType;
|
|
class PackedType;
|
|
|
|
template<class ConstantClass, class TypeClass, class ValType>
|
|
struct ConstantCreator;
|
|
template<class ConstantClass, class TypeClass>
|
|
struct ConvertConstantType;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// ConstantIntegral - Shared superclass of boolean and integer constants.
|
|
///
|
|
/// This class just defines some common interfaces to be implemented.
|
|
///
|
|
class ConstantIntegral : public Constant {
|
|
protected:
|
|
union {
|
|
int64_t Signed;
|
|
uint64_t Unsigned;
|
|
} Val;
|
|
ConstantIntegral(const Type *Ty, ValueTy VT, uint64_t V);
|
|
public:
|
|
|
|
/// getRawValue - return the underlying value of this constant as a 64-bit
|
|
/// unsigned integer value.
|
|
///
|
|
inline uint64_t getRawValue() const { return Val.Unsigned; }
|
|
|
|
/// getZExtValue - Return the constant zero extended as appropriate for this
|
|
/// type.
|
|
inline uint64_t getZExtValue() const {
|
|
unsigned Size = getType()->getPrimitiveSizeInBits();
|
|
return Val.Unsigned & (~0ULL >> (64-Size));
|
|
}
|
|
|
|
/// getSExtValue - Return the constant sign extended as appropriate for this
|
|
/// type.
|
|
inline int64_t getSExtValue() const {
|
|
unsigned Size = getType()->getPrimitiveSizeInBits();
|
|
return (Val.Signed << (64-Size)) >> (64-Size);
|
|
}
|
|
|
|
/// 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 Value *V) {
|
|
return V->getValueType() == ConstantBoolVal ||
|
|
V->getValueType() == ConstantSIntVal ||
|
|
V->getValueType() == ConstantUIntVal;
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// ConstantBool - Boolean Values
|
|
///
|
|
class ConstantBool : public ConstantIntegral {
|
|
ConstantBool(bool V);
|
|
public:
|
|
static ConstantBool *True, *False; // The True & False values
|
|
|
|
/// 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.
|
|
inline ConstantBool *inverted() const { return (this==True) ? False : True; }
|
|
|
|
/// getValue - return the boolean value of this constant.
|
|
///
|
|
inline bool getValue() const { return static_cast<bool>(getRawValue()); }
|
|
|
|
/// 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:
|
|
static inline bool classof(const ConstantBool *) { return true; }
|
|
static bool classof(const Value *V) {
|
|
return V->getValueType() == ConstantBoolVal;
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// ConstantInt - Superclass of ConstantSInt & ConstantUInt, to make dealing
|
|
/// with integral constants easier.
|
|
///
|
|
class ConstantInt : public ConstantIntegral {
|
|
protected:
|
|
ConstantInt(const ConstantInt &); // DO NOT IMPLEMENT
|
|
ConstantInt(const Type *Ty, ValueTy VT, uint64_t V);
|
|
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.
|
|
///
|
|
bool equalsInt(unsigned char V) const {
|
|
assert(V <= 127 &&
|
|
"equalsInt: Can only be used with very small positive constants!");
|
|
return Val.Unsigned == V;
|
|
}
|
|
|
|
/// 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.
|
|
virtual bool isNullValue() const { return Val.Unsigned == 0; }
|
|
virtual bool isMaxValue() const = 0;
|
|
virtual bool isMinValue() const = 0;
|
|
|
|
/// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const ConstantInt *) { return true; }
|
|
static bool classof(const Value *V) {
|
|
return V->getValueType() == ConstantSIntVal ||
|
|
V->getValueType() == ConstantUIntVal;
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// ConstantSInt - Signed Integer Values [sbyte, short, int, long]
|
|
///
|
|
class ConstantSInt : public ConstantInt {
|
|
ConstantSInt(const ConstantSInt &); // DO NOT IMPLEMENT
|
|
friend struct ConstantCreator<ConstantSInt, Type, int64_t>;
|
|
|
|
protected:
|
|
ConstantSInt(const Type *Ty, int64_t V);
|
|
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; }
|
|
|
|
virtual bool isAllOnesValue() const { return getValue() == -1; }
|
|
|
|
/// 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 Value *V) {
|
|
return V->getValueType() == ConstantSIntVal;
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// ConstantUInt - Unsigned Integer Values [ubyte, ushort, uint, ulong]
|
|
///
|
|
class ConstantUInt : public ConstantInt {
|
|
ConstantUInt(const ConstantUInt &); // DO NOT IMPLEMENT
|
|
friend struct ConstantCreator<ConstantUInt, Type, uint64_t>;
|
|
protected:
|
|
ConstantUInt(const Type *Ty, uint64_t V);
|
|
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; }
|
|
|
|
/// isMaxValue - Return true if this is the largest value that may be
|
|
/// represented by this type.
|
|
///
|
|
virtual bool isAllOnesValue() const;
|
|
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 Value *V) {
|
|
return V->getValueType() == ConstantUIntVal;
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// ConstantFP - Floating Point Values [float, double]
|
|
///
|
|
class ConstantFP : public Constant {
|
|
double Val;
|
|
friend struct ConstantCreator<ConstantFP, Type, uint64_t>;
|
|
friend struct ConstantCreator<ConstantFP, Type, uint32_t>;
|
|
ConstantFP(const ConstantFP &); // DO NOT IMPLEMENT
|
|
protected:
|
|
ConstantFP(const Type *Ty, double V);
|
|
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. Don't depend on == for doubles to tell us it's zero, it
|
|
/// considers -0.0 to be null as well as 0.0. :(
|
|
virtual bool isNullValue() const;
|
|
|
|
/// isExactlyValue - We don't rely on operator== working on double values, as
|
|
/// it returns true for things that are clearly not equal, like -0.0 and 0.0.
|
|
/// As such, this method can be used to do an exact bit-for-bit comparison of
|
|
/// two floating point values.
|
|
bool isExactlyValue(double V) const;
|
|
|
|
/// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const ConstantFP *) { return true; }
|
|
static bool classof(const Value *V) {
|
|
return V->getValueType() == ConstantFPVal;
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// ConstantAggregateZero - All zero aggregate value
|
|
///
|
|
class ConstantAggregateZero : public Constant {
|
|
friend struct ConstantCreator<ConstantAggregateZero, Type, char>;
|
|
ConstantAggregateZero(const ConstantAggregateZero &); // DO NOT IMPLEMENT
|
|
protected:
|
|
ConstantAggregateZero(const Type *Ty)
|
|
: Constant(Ty, ConstantAggregateZeroVal, 0, 0) {}
|
|
public:
|
|
/// get() - static factory method for creating a null aggregate. It is
|
|
/// illegal to call this method with a non-aggregate type.
|
|
static Constant *get(const Type *Ty);
|
|
|
|
/// isNullValue - Return true if this is the value that would be returned by
|
|
/// getNullValue.
|
|
virtual bool isNullValue() const { return true; }
|
|
|
|
virtual void destroyConstant();
|
|
|
|
/// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
///
|
|
static bool classof(const ConstantAggregateZero *) { return true; }
|
|
static bool classof(const Value *V) {
|
|
return V->getValueType() == ConstantAggregateZeroVal;
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// ConstantArray - Constant Array Declarations
|
|
///
|
|
class ConstantArray : public Constant {
|
|
friend struct ConstantCreator<ConstantArray, ArrayType,
|
|
std::vector<Constant*> >;
|
|
ConstantArray(const ConstantArray &); // DO NOT IMPLEMENT
|
|
protected:
|
|
ConstantArray(const ArrayType *T, const std::vector<Constant*> &Val);
|
|
~ConstantArray();
|
|
public:
|
|
/// get() - Static factory methods - Return objects of the specified value
|
|
static Constant *get(const ArrayType *T, const std::vector<Constant*> &);
|
|
static Constant *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 reinterpret_cast<const ArrayType*>(Value::getType());
|
|
}
|
|
|
|
/// isString - This method returns true if the array is an array of sbyte or
|
|
/// ubyte, and if the elements of the array are all ConstantInt's.
|
|
bool isString() 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;
|
|
|
|
/// isNullValue - Return true if this is the value that would be returned by
|
|
/// getNullValue. This always returns false because zero arrays are always
|
|
/// created as ConstantAggregateZero objects.
|
|
virtual bool isNullValue() const { return false; }
|
|
|
|
virtual void destroyConstant();
|
|
virtual void replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U);
|
|
|
|
/// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const ConstantArray *) { return true; }
|
|
static bool classof(const Value *V) {
|
|
return V->getValueType() == ConstantArrayVal;
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// ConstantStruct - Constant Struct Declarations
|
|
//
|
|
class ConstantStruct : public Constant {
|
|
friend struct ConstantCreator<ConstantStruct, StructType,
|
|
std::vector<Constant*> >;
|
|
ConstantStruct(const ConstantStruct &); // DO NOT IMPLEMENT
|
|
protected:
|
|
ConstantStruct(const StructType *T, const std::vector<Constant*> &Val);
|
|
~ConstantStruct();
|
|
public:
|
|
/// get() - Static factory methods - Return objects of the specified value
|
|
///
|
|
static Constant *get(const StructType *T, const std::vector<Constant*> &V);
|
|
static Constant *get(const std::vector<Constant*> &V);
|
|
|
|
/// getType() specialization - Reduce amount of casting...
|
|
///
|
|
inline const StructType *getType() const {
|
|
return reinterpret_cast<const StructType*>(Value::getType());
|
|
}
|
|
|
|
/// isNullValue - Return true if this is the value that would be returned by
|
|
/// getNullValue. This always returns false because zero structs are always
|
|
/// created as ConstantAggregateZero objects.
|
|
virtual bool isNullValue() const {
|
|
return false;
|
|
}
|
|
|
|
virtual void destroyConstant();
|
|
virtual void replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U);
|
|
|
|
/// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const ConstantStruct *) { return true; }
|
|
static bool classof(const Value *V) {
|
|
return V->getValueType() == ConstantStructVal;
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// ConstantPacked - Constant Packed Declarations
|
|
///
|
|
class ConstantPacked : public Constant {
|
|
friend struct ConstantCreator<ConstantPacked, PackedType,
|
|
std::vector<Constant*> >;
|
|
ConstantPacked(const ConstantPacked &); // DO NOT IMPLEMENT
|
|
protected:
|
|
ConstantPacked(const PackedType *T, const std::vector<Constant*> &Val);
|
|
~ConstantPacked();
|
|
public:
|
|
/// get() - Static factory methods - Return objects of the specified value
|
|
static Constant *get(const PackedType *T, const std::vector<Constant*> &);
|
|
static Constant *get(const std::vector<Constant*> &V);
|
|
|
|
/// getType - Specialize the getType() method to always return an PackedType,
|
|
/// which reduces the amount of casting needed in parts of the compiler.
|
|
///
|
|
inline const PackedType *getType() const {
|
|
return reinterpret_cast<const PackedType*>(Value::getType());
|
|
}
|
|
|
|
/// isNullValue - Return true if this is the value that would be returned by
|
|
/// getNullValue. This always returns false because zero arrays are always
|
|
/// created as ConstantAggregateZero objects.
|
|
virtual bool isNullValue() const { return false; }
|
|
|
|
virtual void destroyConstant();
|
|
virtual void replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U);
|
|
|
|
/// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const ConstantPacked *) { return true; }
|
|
static bool classof(const Value *V) {
|
|
return V->getValueType() == ConstantPackedVal;
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// ConstantPointerNull - a constant pointer value that points to null
|
|
///
|
|
class ConstantPointerNull : public Constant {
|
|
friend struct ConstantCreator<ConstantPointerNull, PointerType, char>;
|
|
ConstantPointerNull(const ConstantPointerNull &); // DO NOT IMPLEMENT
|
|
protected:
|
|
ConstantPointerNull(const PointerType *T)
|
|
: Constant(reinterpret_cast<const Type*>(T),
|
|
Value::ConstantPointerNullVal, 0, 0) {}
|
|
|
|
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.
|
|
virtual bool isNullValue() const { return true; }
|
|
|
|
virtual void destroyConstant();
|
|
|
|
/// getType - Specialize the getType() method to always return an PointerType,
|
|
/// which reduces the amount of casting needed in parts of the compiler.
|
|
///
|
|
inline const PointerType *getType() const {
|
|
return reinterpret_cast<const PointerType*>(Value::getType());
|
|
}
|
|
|
|
/// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const ConstantPointerNull *) { return true; }
|
|
static bool classof(const Value *V) {
|
|
return V->getValueType() == ConstantPointerNullVal;
|
|
}
|
|
};
|
|
|
|
|
|
/// ConstantExpr - a constant value that is initialized with an expression using
|
|
/// other constant values.
|
|
///
|
|
/// This class uses the standard Instruction opcodes to define the various
|
|
/// constant expressions. The Opcode field for the ConstantExpr class is
|
|
/// maintained in the Value::SubclassData field.
|
|
class ConstantExpr : public Constant {
|
|
friend struct ConstantCreator<ConstantExpr,Type,
|
|
std::pair<unsigned, std::vector<Constant*> > >;
|
|
friend struct ConvertConstantType<ConstantExpr, Type>;
|
|
|
|
protected:
|
|
ConstantExpr(const Type *Ty, unsigned Opcode, Use *Ops, unsigned NumOps)
|
|
: Constant(Ty, ConstantExprVal, Ops, NumOps) {
|
|
// Operation type (an Instruction opcode) is stored as the SubclassData.
|
|
SubclassData = Opcode;
|
|
}
|
|
|
|
// These private methods are used by the type resolution code to create
|
|
// ConstantExprs in intermediate forms.
|
|
static Constant *getTy(const Type *Ty, unsigned Opcode,
|
|
Constant *C1, Constant *C2);
|
|
static Constant *getShiftTy(const Type *Ty,
|
|
unsigned Opcode, Constant *C1, Constant *C2);
|
|
static Constant *getSelectTy(const Type *Ty,
|
|
Constant *C1, Constant *C2, Constant *C3);
|
|
static Constant *getGetElementPtrTy(const Type *Ty, Constant *C,
|
|
const std::vector<Value*> &IdxList);
|
|
static Constant *getExtractElementTy(const Type *Ty, Constant *Val,
|
|
Constant *Idx);
|
|
static Constant *getInsertElementTy(const Type *Ty, Constant *Val,
|
|
Constant *Elt, Constant *Idx);
|
|
|
|
public:
|
|
// Static methods to construct a ConstantExpr of different kinds. Note that
|
|
// these methods may return a object that is not an instance of the
|
|
// ConstantExpr class, because they will attempt to fold the constant
|
|
// expression into something simpler if possible.
|
|
|
|
/// Cast constant expr
|
|
///
|
|
static Constant *getCast(Constant *C, const Type *Ty);
|
|
static Constant *getSignExtend(Constant *C, const Type *Ty);
|
|
static Constant *getZeroExtend(Constant *C, const Type *Ty);
|
|
|
|
/// Select constant expr
|
|
///
|
|
static Constant *getSelect(Constant *C, Constant *V1, Constant *V2) {
|
|
return getSelectTy(V1->getType(), C, V1, V2);
|
|
}
|
|
|
|
/// getSizeOf constant expr - computes the size of a type in a target
|
|
/// independent way (Note: the return type is ULong but the object is not
|
|
/// necessarily a ConstantUInt).
|
|
///
|
|
static Constant *getSizeOf(const Type *Ty);
|
|
|
|
/// getPtrPtrFromArrayPtr constant expr - given a pointer to a constant array,
|
|
/// return a pointer to a pointer of the array element type.
|
|
static Constant *getPtrPtrFromArrayPtr(Constant *C);
|
|
|
|
/// ConstantExpr::get - Return a binary or shift operator constant expression,
|
|
/// folding if possible.
|
|
///
|
|
static Constant *get(unsigned Opcode, Constant *C1, Constant *C2);
|
|
|
|
/// ConstantExpr::get* - Return some common constants without having to
|
|
/// specify the full Instruction::OPCODE identifier.
|
|
///
|
|
static Constant *getNeg(Constant *C);
|
|
static Constant *getNot(Constant *C);
|
|
static Constant *getAdd(Constant *C1, Constant *C2);
|
|
static Constant *getSub(Constant *C1, Constant *C2);
|
|
static Constant *getMul(Constant *C1, Constant *C2);
|
|
static Constant *getDiv(Constant *C1, Constant *C2);
|
|
static Constant *getRem(Constant *C1, Constant *C2);
|
|
static Constant *getAnd(Constant *C1, Constant *C2);
|
|
static Constant *getOr(Constant *C1, Constant *C2);
|
|
static Constant *getXor(Constant *C1, Constant *C2);
|
|
static Constant *getSetEQ(Constant *C1, Constant *C2);
|
|
static Constant *getSetNE(Constant *C1, Constant *C2);
|
|
static Constant *getSetLT(Constant *C1, Constant *C2);
|
|
static Constant *getSetGT(Constant *C1, Constant *C2);
|
|
static Constant *getSetLE(Constant *C1, Constant *C2);
|
|
static Constant *getSetGE(Constant *C1, Constant *C2);
|
|
static Constant *getShl(Constant *C1, Constant *C2);
|
|
static Constant *getShr(Constant *C1, Constant *C2);
|
|
|
|
static Constant *getUShr(Constant *C1, Constant *C2); // unsigned shr
|
|
static Constant *getSShr(Constant *C1, Constant *C2); // signed shr
|
|
|
|
/// Getelementptr form. std::vector<Value*> is only accepted for convenience:
|
|
/// all elements must be Constant's.
|
|
///
|
|
static Constant *getGetElementPtr(Constant *C,
|
|
const std::vector<Constant*> &IdxList);
|
|
static Constant *getGetElementPtr(Constant *C,
|
|
const std::vector<Value*> &IdxList);
|
|
|
|
/// Extractelement form.
|
|
///
|
|
static Constant *getExtractElement(Constant *Val, Constant *Idx);
|
|
|
|
/// Insertelement form.
|
|
///
|
|
static Constant *getInsertElement(Constant *Val, Constant *Elt,
|
|
Constant *Idx);
|
|
|
|
/// 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
|
|
unsigned getOpcode() const { return SubclassData; }
|
|
|
|
/// getOpcodeName - Return a string representation for an opcode.
|
|
const char *getOpcodeName() const;
|
|
|
|
virtual void destroyConstant();
|
|
virtual void replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U);
|
|
|
|
/// Override methods to provide more type information...
|
|
inline Constant *getOperand(unsigned i) {
|
|
return cast<Constant>(User::getOperand(i));
|
|
}
|
|
inline Constant *getOperand(unsigned i) const {
|
|
return const_cast<Constant*>(cast<Constant>(User::getOperand(i)));
|
|
}
|
|
|
|
|
|
/// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const ConstantExpr *) { return true; }
|
|
static inline bool classof(const Value *V) {
|
|
return V->getValueType() == ConstantExprVal;
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// UndefValue - 'undef' values are things that do not have specified contents.
|
|
/// These are used for a variety of purposes, including global variable
|
|
/// initializers and operands to instructions. 'undef' values can occur with
|
|
/// any type.
|
|
///
|
|
class UndefValue : public Constant {
|
|
friend struct ConstantCreator<UndefValue, Type, char>;
|
|
UndefValue(const UndefValue &); // DO NOT IMPLEMENT
|
|
protected:
|
|
UndefValue(const Type *T) : Constant(T, UndefValueVal, 0, 0) {}
|
|
public:
|
|
/// get() - Static factory methods - Return an 'undef' object of the specified
|
|
/// type.
|
|
///
|
|
static UndefValue *get(const Type *T);
|
|
|
|
/// isNullValue - Return true if this is the value that would be returned by
|
|
/// getNullValue.
|
|
virtual bool isNullValue() const { return false; }
|
|
|
|
virtual void destroyConstant();
|
|
|
|
/// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const UndefValue *) { return true; }
|
|
static bool classof(const Value *V) {
|
|
return V->getValueType() == UndefValueVal;
|
|
}
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|