X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FConstants.h;h=a9a18d7930f3481bbc4e45268d86929ed36cc0e0;hb=b834a7b73ce0dcf8fbf8d8b0d62f69e4b78059ad;hp=0088d68f59a36142ddfd7dd464ec8aafc5c5685c;hpb=7b048b391f9ded004170a67780d1c6a5eedeb604;p=oota-llvm.git diff --git a/include/llvm/Constants.h b/include/llvm/Constants.h index 0088d68f59a..a9a18d7930f 100644 --- a/include/llvm/Constants.h +++ b/include/llvm/Constants.h @@ -7,7 +7,8 @@ // //===----------------------------------------------------------------------===// // -/// @file This file contains the declarations for the subclasses of Constant, +/// @file +/// 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 @@ -49,6 +50,7 @@ class ConstantInt : public Constant { ConstantInt(const ConstantInt &); // DO NOT IMPLEMENT ConstantInt(const IntegerType *Ty, const APInt& V); APInt Val; + friend class LLVMContextImpl; protected: // allocate space for exactly zero operands void *operator new(size_t s) { @@ -91,27 +93,6 @@ public: return Val == V; } - /// getTrue/getFalse - Return the singleton true/false values. - static inline ConstantInt *getTrue() { - if (TheTrueVal) return TheTrueVal; - return CreateTrueFalseVals(true); - } - static inline ConstantInt *getFalse() { - if (TheFalseVal) return TheFalseVal; - return CreateTrueFalseVals(false); - } - - /// Return a ConstantInt with the specified value for the specified type. The - /// value V will be canonicalized to a an unsigned APInt. Accessing it with - /// either getSExtValue() or getZExtValue() will yield a correctly sized and - /// signed value for the type Ty. - /// @brief Get a ConstantInt for a specific value. - static ConstantInt *get(const Type *Ty, uint64_t V, bool isSigned = false); - - /// Return a ConstantInt with the specified value and an implied Type. The - /// type is the integer type that corresponds to the bit width of the value. - static ConstantInt *get(const APInt &V); - /// getType - Specialize the getType() method to always return an IntegerType, /// which reduces the amount of casting needed in parts of the compiler. /// @@ -204,19 +185,11 @@ public: return Val.getLimitedValue(Limit); } - /// @returns the value for an integer constant of the given type that has all - /// its bits set to true. - /// @brief Get the all ones value - static ConstantInt *getAllOnesValue(const Type *Ty); - /// @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->getValueID() == ConstantIntVal; } - static void ResetTrueFalse() { TheTrueVal = TheFalseVal = 0; } -private: - static ConstantInt *CreateTrueFalseVals(bool WhichOne); }; @@ -227,6 +200,7 @@ class ConstantFP : public Constant { APFloat Val; void *operator new(size_t, unsigned);// DO NOT IMPLEMENT ConstantFP(const ConstantFP &); // DO NOT IMPLEMENT + friend class LLVMContextImpl; protected: ConstantFP(const Type *Ty, const APFloat& V); protected: @@ -235,14 +209,6 @@ protected: return User::operator new(s, 0); } public: - /// get() - Static factory methods - Return objects of the specified value - static ConstantFP *get(const APFloat &V); - - /// get() - This returns a constant fp for the specified value in the - /// specified type. This should only be used for simple constant values like - /// 2.0/1.0 etc, that are known-valid both as double and as the target format. - 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, const APFloat& V); inline const APFloat& getValueAPF() const { return Val; } @@ -251,9 +217,12 @@ public: /// 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); + + /// isNegativeZeroValue - Return true if the value is what would be returned + /// by getZeroValueForNegation. + virtual bool isNegativeZeroValue() const { + return Val.isZero() && Val.isNegative(); + } /// 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. @@ -295,10 +264,6 @@ protected: return User::operator new(s, 0); } public: - /// get() - static factory method for creating a null aggregate. It is - /// illegal to call this method with a non-aggregate type. - static ConstantAggregateZero *get(const Type *Ty); - /// isNullValue - Return true if this is the value that would be returned by /// getNullValue. virtual bool isNullValue() const { return true; } @@ -321,25 +286,10 @@ class ConstantArray : public Constant { friend struct ConstantCreator >; ConstantArray(const ConstantArray &); // DO NOT IMPLEMENT + friend class LLVMContextImpl; protected: ConstantArray(const ArrayType *T, const std::vector &Val); public: - /// get() - Static factory methods - Return objects of the specified value - static Constant *get(const ArrayType *T, const std::vector &); - static Constant *get(const ArrayType *T, - Constant*const*Vals, unsigned NumVals) { - // FIXME: make this the primary ctor method. - return get(T, std::vector(Vals, Vals+NumVals)); - } - - /// 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(const std::string &Initializer, bool AddNull = true); - /// Transparently provide more efficient getOperand methods. DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant); @@ -400,12 +350,6 @@ public: /// get() - Static factory methods - Return objects of the specified value /// static Constant *get(const StructType *T, const std::vector &V); - static Constant *get(const std::vector &V, bool Packed = false); - static Constant *get(Constant*const* Vals, unsigned NumVals, - bool Packed = false) { - // FIXME: make this the primary ctor method. - return get(std::vector(Vals, Vals+NumVals), Packed); - } /// Transparently provide more efficient getOperand methods. DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant); @@ -451,11 +395,6 @@ protected: public: /// get() - Static factory methods - Return objects of the specified value static Constant *get(const VectorType *T, const std::vector &); - static Constant *get(const std::vector &V); - static Constant *get(Constant*const* Vals, unsigned NumVals) { - // FIXME: make this the primary ctor method. - return get(std::vector(Vals, Vals+NumVals)); - } /// Transparently provide more efficient getOperand methods. DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant); @@ -466,11 +405,6 @@ public: inline const VectorType *getType() const { return reinterpret_cast(Value::getType()); } - - /// @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 vectors are always @@ -670,44 +604,19 @@ public: 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 an i64). - /// - static Constant *getSizeOf(const Type *Ty); - /// ConstantExpr::get - Return a binary or shift operator constant expression, /// folding if possible. /// static Constant *get(unsigned Opcode, Constant *C1, Constant *C2); - /// @brief Return an ICmp, FCmp, VICmp, or VFCmp comparison operator constant - /// expression. + /// @brief Return an ICmp or FCmp comparison operator constant expression. static Constant *getCompare(unsigned short pred, 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 *getUDiv(Constant *C1, Constant *C2); - static Constant *getSDiv(Constant *C1, Constant *C2); - static Constant *getFDiv(Constant *C1, Constant *C2); - static Constant *getURem(Constant *C1, Constant *C2); // unsigned rem - static Constant *getSRem(Constant *C1, Constant *C2); // signed rem - static Constant *getFRem(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 *getICmp(unsigned short pred, Constant *LHS, Constant *RHS); static Constant *getFCmp(unsigned short pred, Constant *LHS, Constant *RHS); - static Constant *getVICmp(unsigned short pred, Constant *LHS, Constant *RHS); - static Constant *getVFCmp(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); /// Getelementptr form. std::vector is only accepted for convenience: /// all elements must be Constant's. @@ -725,11 +634,6 @@ public: static Constant *getInsertValue(Constant *Agg, Constant *Val, const unsigned *IdxList, unsigned NumIdx); - /// Floating point negation must be implemented with f(x) = -0.0 - x. This - /// 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); - /// isNullValue - Return true if this is the value that would be returned by /// getNullValue. virtual bool isNullValue() const { return false; } @@ -811,7 +715,6 @@ public: return V->getValueID() == UndefValueVal; } }; - } // End llvm namespace #endif