#include "llvm/Constant.h"
#include "llvm/Type.h"
#include "llvm/ADT/APInt.h"
+#include "llvm/ADT/APFloat.h"
namespace llvm {
/// @returns the 64-bit value of this constant if its active bits number is
/// not greater than 64, otherwise, just return the given uint64_t number.
/// @brief Get the constant's value if possible.
- uint64_t getLimitedValue(uint64_t Limit) {
- return (Val.getActiveBits() > 64 || Val.getZExtValue() > Limit) ?
- Limit : Val.getZExtValue();
+ uint64_t getLimitedValue(uint64_t Limit = ~0ULL) const {
+ return Val.getLimitedValue(Limit);
}
/// @returns the value for an integer constant of the given type that has all
/// @brief Methods to 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() == ConstantIntVal;
+ return V->getValueID() == ConstantIntVal;
}
static void ResetTrueFalse() { TheTrueVal = TheFalseVal = 0; }
private:
/// ConstantFP - Floating Point Values [float, double]
///
class ConstantFP : public Constant {
- double Val;
+ APFloat Val;
ConstantFP(const ConstantFP &); // DO NOT IMPLEMENT
protected:
- ConstantFP(const Type *Ty, double V);
+ ConstantFP(const Type *Ty, const APFloat& V);
public:
/// get() - Static factory methods - Return objects of the specified value
- static ConstantFP *get(const Type *Ty, double V);
+ static ConstantFP *get(const Type *Ty, const APFloat& 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; }
+ static bool isValueValidForType(const Type *Ty, const APFloat& V);
+ inline const APFloat& getValueAPF() 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;
+ // Get a negative zero.
+ static ConstantFP *getNegativeZero(const Type* Ty);
+
/// 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;
-
+ /// two floating point values. The version with a double operand is retained
+ /// because it's so convenient to write isExactlyValue(2.0), but please use
+ /// it only for constants.
+ bool isExactlyValue(const APFloat& V) const;
+
+ bool isExactlyValue(double V) const {
+ if (&Val.getSemantics() == &APFloat::IEEEdouble)
+ return isExactlyValue(APFloat(V));
+ else if (&Val.getSemantics() == &APFloat::IEEEsingle)
+ return isExactlyValue(APFloat((float)V));
+ assert(0);
+ return false;
+ }
/// 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;
+ return V->getValueID() == ConstantFPVal;
}
};
///
static bool classof(const ConstantAggregateZero *) { return true; }
static bool classof(const Value *V) {
- return V->getValueType() == ConstantAggregateZeroVal;
+ return V->getValueID() == ConstantAggregateZeroVal;
}
};
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;
/// 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;
+ return V->getValueID() == ConstantArrayVal;
}
};
/// 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;
+ return V->getValueID() == ConstantStructVal;
}
};
return get(std::vector<Constant*>(Vals, Vals+NumVals));
}
- /// getType - Specialize the getType() method to always return an VectorType,
+ /// getType - Specialize the getType() method to always return a VectorType,
/// which reduces the amount of casting needed in parts of the compiler.
///
inline const VectorType *getType() const {
return reinterpret_cast<const VectorType*>(Value::getType());
}
- /// @returns the value for an packed integer constant of the given type that
+ /// @returns the value for a vector integer constant of the given type that
/// has all its bits set to true.
/// @brief Get the all ones value
static ConstantVector *getAllOnesValue(const VectorType *Ty);
/// isNullValue - Return true if this is the value that would be returned by
- /// getNullValue. This always returns false because zero arrays are always
+ /// getNullValue. This always returns false because zero vectors are always
/// created as ConstantAggregateZero objects.
virtual bool isNullValue() const { return false; }
- /// This function will return true iff every element in this packed constant
+ /// This function will return true iff every element in this vector constant
/// is set to all ones.
/// @returns true iff this constant's emements are all set to all ones.
/// @brief Determine if the value is all ones.
bool isAllOnesValue() const;
+ /// 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();
+
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 ConstantVector *) { return true; }
static bool classof(const Value *V) {
- return V->getValueType() == ConstantVectorVal;
+ return V->getValueID() == ConstantVectorVal;
}
};
/// 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;
+ return V->getValueID() == ConstantPointerNullVal;
}
};
}
/// getSizeOf constant expr - computes the size of a type in a target
- /// independent way (Note: the return type is a ULong).
+ /// independent way (Note: the return type is an i64).
///
static Constant *getSizeOf(const Type *Ty);
static Constant *getAnd(Constant *C1, Constant *C2);
static Constant *getOr(Constant *C1, Constant *C2);
static Constant *getXor(Constant *C1, Constant *C2);
- static Constant* getICmp(unsigned short pred, Constant* LHS, Constant* RHS);
- static Constant* getFCmp(unsigned short pred, Constant* LHS, Constant* RHS);
+ static Constant *getICmp(unsigned short pred, Constant *LHS, Constant *RHS);
+ static Constant *getFCmp(unsigned short pred, Constant *LHS, Constant *RHS);
static Constant *getShl(Constant *C1, Constant *C2);
static Constant *getLShr(Constant *C1, Constant *C2);
static Constant *getAShr(Constant *C1, Constant *C2);
static Constant *getShuffleVector(Constant *V1, Constant *V2, Constant *Mask);
/// Floating point negation must be implemented with f(x) = -0.0 - x. This
- /// method returns the negative zero constant for floating point or packed
+ /// method returns the negative zero constant for floating point or vector
/// floating point types; for all other types, it returns the null value.
static Constant *getZeroValueForNegationExpr(const Type *Ty);
/// 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;
+ return V->getValueID() == ConstantExprVal;
}
};
/// 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;
+ return V->getValueID() == UndefValueVal;
}
};
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