Changes in directory llvm/include/llvm:
Constants.h updated: 1.94 -> 1.95 InstrTypes.h updated: 1.48 -> 1.49 Instruction.def updated: 1.25 -> 1.26 Instruction.h updated: 1.74 -> 1.75 Instructions.h updated: 1.46 -> 1.47 Type.h updated: 1.91 -> 1.92 --- Log message: For PR950: http://llvm.org/PR950 : The long awaited CAST patch. This introduces 12 new instructions into LLVM to replace the cast instruction. Corresponding changes throughout LLVM are provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the exception of 175.vpr which fails only on a slight floating point output difference. --- Diffs of the changes: (+727 -61) Constants.h | 28 ++- InstrTypes.h | 155 +++++++++++++++++ Instruction.def | 69 +++++-- Instruction.h | 17 + Instructions.h | 509 +++++++++++++++++++++++++++++++++++++++++++++++++++----- Type.h | 10 - 6 files changed, 727 insertions(+), 61 deletions(-) Index: llvm/include/llvm/Constants.h diff -u llvm/include/llvm/Constants.h:1.94 llvm/include/llvm/Constants.h:1.95 --- llvm/include/llvm/Constants.h:1.94 Wed Nov 8 00:47:32 2006 +++ llvm/include/llvm/Constants.h Sun Nov 26 19:05:09 2006 @@ -516,9 +516,33 @@ /// Cast constant expr /// + static Constant *getTrunc (Constant *C, const Type *Ty); + static Constant *getSignExtend (Constant *C, const Type *Ty); + static Constant *getZeroExtend (Constant *C, const Type *Ty); + static Constant *getFPTrunc (Constant *C, const Type *Ty); + static Constant *getFPExtend (Constant *C, const Type *Ty); + static Constant *getUIToFP (Constant *C, const Type *Ty); + static Constant *getSIToFP (Constant *C, const Type *Ty); + static Constant *getFPToUI (Constant *C, const Type *Ty); + static Constant *getFPToSI (Constant *C, const Type *Ty); + static Constant *getPtrToInt (Constant *C, const Type *Ty); + static Constant *getIntToPtr (Constant *C, const Type *Ty); + static Constant *getBitCast (Constant *C, const Type *Ty); + + // @brief Convenience function for getting one of the casting operations + // using a CastOps opcode. + static Constant *getCast( + unsigned ops, ///< The opcode for the conversion + Constant *C, ///< The constant to be converted + const Type *Ty ///< The type to which the constant is converted + ); + + // @brief Get a ConstantExpr Conversion operator that casts C to Ty static Constant *getCast(Constant *C, const Type *Ty); - static Constant *getSignExtend(Constant *C, const Type *Ty); - static Constant *getZeroExtend(Constant *C, const Type *Ty); + + /// @brief Return true if this is a convert constant expression + bool isCast() const; + /// Select constant expr /// Index: llvm/include/llvm/InstrTypes.h diff -u llvm/include/llvm/InstrTypes.h:1.48 llvm/include/llvm/InstrTypes.h:1.49 --- llvm/include/llvm/InstrTypes.h:1.48 Sun Nov 19 19:22:35 2006 +++ llvm/include/llvm/InstrTypes.h Sun Nov 26 19:05:09 2006 @@ -244,6 +244,161 @@ }; //===----------------------------------------------------------------------===// +// CastInst Class +//===----------------------------------------------------------------------===// + +/// CastInst - This is the base class for all instructions that perform data +/// casts. It is simply provided so that instruction category testing +/// can be performed with code like: +/// +/// if (isa<CastInst>(Instr)) { ... } +/// @brief Base class of casting instructions. +class CastInst : public UnaryInstruction { + /// @brief Copy constructor + CastInst(const CastInst &CI) + : UnaryInstruction(CI.getType(), CI.getOpcode(), CI.getOperand(0)) { + } + /// @brief Do not allow default construction + CastInst(); +protected: + /// @brief Constructor with insert-before-instruction semantics for subclasses + CastInst(const Type *Ty, unsigned iType, Value *S, + const std::string &Name = "", Instruction *InsertBefore = 0) + : UnaryInstruction(Ty, iType, S, Name, InsertBefore) { + } + /// @brief Constructor with insert-at-end-of-block semantics for subclasses + CastInst(const Type *Ty, unsigned iType, Value *S, + const std::string &Name, BasicBlock *InsertAtEnd) + : UnaryInstruction(Ty, iType, S, Name, InsertAtEnd) { + } +public: + /// Provides a way to construct any of the CastInst subclasses using an + /// opcode instead of the subclass's constructor. The opcode must be in the + /// CastOps category (Instruction::isCast(opcode) returns true). This + /// constructor has insert-before-instruction semantics to automatically + /// insert the new CastInst before InsertBefore (if it is non-null). + /// @brief Construct any of the CastInst subclasses + static CastInst *create( + Instruction::CastOps, ///< The opcode of the cast instruction + Value *S, ///< The value to be casted (operand 0) + const Type *Ty, ///< The type to which cast should be made + const std::string &Name = "", ///< Name for the instruction + Instruction *InsertBefore = 0 ///< Place to insert the instruction + ); + /// Provides a way to construct any of the CastInst subclasses using an + /// opcode instead of the subclass's constructor. The opcode must be in the + /// CastOps category. This constructor has insert-at-end-of-block semantics + /// to automatically insert the new CastInst at the end of InsertAtEnd (if + /// its non-null). + /// @brief Construct any of the CastInst subclasses + static CastInst *create( + Instruction::CastOps, ///< The opcode for the cast instruction + Value *S, ///< The value to be casted (operand 0) + const Type *Ty, ///< The type to which operand is casted + const std::string &Name, ///< The name for the instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + /// Returns the opcode necessary to cast Val into Ty using usual casting + /// rules. + static Instruction::CastOps getCastOpcode( + const Value *Val, ///< The value to cast + const Type *Ty ///< The Type to which the value should be casted + ); + + /// Joins the create method (with insert-before-instruction semantics) above + /// with the getCastOpcode method. getOpcode(S,Ty) is called first to + /// obtain the opcode for casting S to type Ty. Then the get(...) method is + /// called to create the CastInst and insert it. The instruction is + /// inserted before InsertBefore (if it is non-null). The cast created is + /// inferred, because only the types involved are used in determining which + /// cast opcode to use. For specific casts, use one of the create methods. + /// @brief Inline helper method to join create with getCastOpcode. + inline static CastInst *createInferredCast( + Value *S, ///< The value to be casted (operand 0) + const Type *Ty, ///< Type to which operand should be casted + const std::string &Name = "", ///< Name for the instruction + Instruction *InsertBefore = 0 ///< Place to insert the CastInst + ) { + return create(getCastOpcode(S, Ty), S, Ty, Name, InsertBefore); + } + + /// Joins the get method (with insert-at-end-of-block semantics) method + /// above with the getCastOpcode method. getOpcode(S,Ty) is called first to + /// obtain the usual casting opcode for casting S to type Ty. Then the + /// get(...) method is called to create the CastInst and insert it. The + /// instruction is inserted at the end of InsertAtEnd (if it is non-null). + /// The created cast is inferred, because only the types involved are used + /// in determining which cast opcode to use. For specific casts, use one of + /// the create methods. + /// @brief Inline helper method to join create with getCastOpcode. + inline static CastInst *createInferredCast( + Value *S, ///< The value to be casted (operand 0) + const Type *Ty, ///< Type to which operand should be casted + const std::string &Name, ///< Name for the instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ) { + return create(getCastOpcode(S, Ty), S, Ty, Name, InsertAtEnd); + } + + /// There are several places where we need to know if a cast instruction + /// only deals with integer source and destination types. To simplify that + /// logic, this method is provided. + /// @returns true iff the cast has only integral typed operand and dest type. + /// @brief Determine if this is an integer-only cast. + bool isIntegerCast() const; + + /// A lossless cast is one that does not alter the basic value. It implies + /// a no-op cast but is more stringent, preventing things like int->float, + /// long->double, int->ptr, or packed->anything. + /// @returns true iff the cast is lossless. + /// @brief Determine if this is a lossless cast. + bool isLosslessCast() const; + + /// A no-op cast is one that can be effected without changing any bits. + /// It implies that the source and destination types are the same size. The + /// IntPtrTy argument is used to make accurate determinations for casts + /// involving Integer and Pointer types. They are no-op casts if the integer + /// is the same size as the pointer. However, pointer size varies with + /// platform. Generally, the result of TargetData::getIntPtrType() should be + /// passed in. If that's not available, use Type::ULongTy, which will make + /// the isNoopCast call conservative. + /// @brief Determine if this cast is a no-op cast. + bool isNoopCast( + const Type *IntPtrTy ///< Integer type corresponding to pointer + ) const; + + /// Determine how a pair of casts can be eliminated, if they can be at all. + /// This is a helper function for both CastInst and ConstantExpr. + /// @returns 0 if the CastInst pair can't be eliminated + /// @returns Instruction::CastOps value for a cast that can replace + /// the pair, casting SrcTy to DstTy. + /// @brief Determine if a cast pair is eliminable + static unsigned isEliminableCastPair( + Instruction::CastOps firstOpcode, ///< Opcode of first cast + Instruction::CastOps secondOpcode, ///< Opcode of second cast + const Type *SrcTy, ///< SrcTy of 1st cast + const Type *MidTy, ///< DstTy of 1st cast & SrcTy of 2nd cast + const Type *DstTy, ///< DstTy of 2nd cast + const Type *IntPtrTy ///< Integer type corresponding to Ptr types + ); + + /// @brief Return the opcode of this CastInst + Instruction::CastOps getOpcode() const { + return Instruction::CastOps(Instruction::getOpcode()); + } + + /// @brief Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const CastInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() >= CastOpsBegin && I->getOpcode() < CastOpsEnd; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + +//===----------------------------------------------------------------------===// // CmpInst Class //===----------------------------------------------------------------------===// Index: llvm/include/llvm/Instruction.def diff -u llvm/include/llvm/Instruction.def:1.25 llvm/include/llvm/Instruction.def:1.26 --- llvm/include/llvm/Instruction.def:1.25 Sun Nov 19 19:22:35 2006 +++ llvm/include/llvm/Instruction.def Sun Nov 26 19:05:09 2006 @@ -60,6 +60,20 @@ #define LAST_MEMORY_INST(num) #endif +#ifndef FIRST_CAST_INST +#define FIRST_CAST_INST(num) +#endif +#ifndef HANDLE_CAST_INST +#ifndef HANDLE_INST +#define HANDLE_CAST_INST(num, opcode, Class) +#else +#define HANDLE_CAST_INST(num, opcode, Class) HANDLE_INST(num, opcode, Class) +#endif +#endif +#ifndef LAST_CAST_INST +#define LAST_CAST_INST(num) +#endif + #ifndef FIRST_OTHER_INST #define FIRST_OTHER_INST(num) #endif @@ -124,24 +138,41 @@ HANDLE_MEMORY_INST(30, GetElementPtr, GetElementPtrInst) LAST_MEMORY_INST(30) +// Cast operators ... +// NOTE: The order matters here because CastInst::isEliminableCastPair +// NOTE: (see Instructions.cpp) encodes a table based on this ordering. + FIRST_CAST_INST(31) +HANDLE_CAST_INST(31, Trunc , CastInst ) // Truncate integers +HANDLE_CAST_INST(32, ZExt , CastInst ) // Zero extend integers +HANDLE_CAST_INST(33, SExt , CastInst ) // Sign extend integers +HANDLE_CAST_INST(34, FPToUI , CastInst ) // floating point -> UInt +HANDLE_CAST_INST(35, FPToSI , CastInst ) // floating point -> SInt +HANDLE_CAST_INST(36, UIToFP , CastInst ) // UInt -> floating point +HANDLE_CAST_INST(37, SIToFP , CastInst ) // SInt -> floating point +HANDLE_CAST_INST(38, FPTrunc , CastInst ) // Truncate floating point +HANDLE_CAST_INST(39, FPExt , CastInst ) // Extend floating point +HANDLE_CAST_INST(40, PtrToInt, CastInst ) // Pointer -> Integer +HANDLE_CAST_INST(41, IntToPtr, CastInst ) // Integer -> Pointer +HANDLE_CAST_INST(42, BitCast , CastInst ) // Type cast + LAST_CAST_INST(42) + // Other operators... - FIRST_OTHER_INST(31) -HANDLE_OTHER_INST(31, ICmp , ICmpInst ) // Integer comparison instruction -HANDLE_OTHER_INST(32, FCmp , FCmpInst ) // Floating point comparison instr. -HANDLE_OTHER_INST(33, PHI , PHINode ) // PHI node instruction -HANDLE_OTHER_INST(34, Cast , CastInst ) // Type cast -HANDLE_OTHER_INST(35, Call , CallInst ) // Call a function -HANDLE_OTHER_INST(36, Shl , ShiftInst ) // Shift Left operations (logical) -HANDLE_OTHER_INST(37, LShr , ShiftInst ) // Logical Shift right (unsigned) -HANDLE_OTHER_INST(38, AShr , ShiftInst ) // Arithmetic shift right (signed) -HANDLE_OTHER_INST(39, Select , SelectInst ) // select instruction -HANDLE_OTHER_INST(40, UserOp1, Instruction) // May be used internally in a pass -HANDLE_OTHER_INST(41, UserOp2, Instruction) // Internal to passes only -HANDLE_OTHER_INST(42, VAArg , VAArgInst ) // vaarg instruction -HANDLE_OTHER_INST(43, ExtractElement, ExtractElementInst)// extract from vector. -HANDLE_OTHER_INST(44, InsertElement, InsertElementInst) // insert into vector -HANDLE_OTHER_INST(45, ShuffleVector, ShuffleVectorInst) // shuffle two vectors. - LAST_OTHER_INST(45) + FIRST_OTHER_INST(43) +HANDLE_OTHER_INST(43, ICmp , ICmpInst ) // Integer comparison instruction +HANDLE_OTHER_INST(44, FCmp , FCmpInst ) // Floating point comparison instr. +HANDLE_OTHER_INST(45, PHI , PHINode ) // PHI node instruction +HANDLE_OTHER_INST(46, Call , CallInst ) // Call a function +HANDLE_OTHER_INST(47, Shl , ShiftInst ) // Shift Left operations (logical) +HANDLE_OTHER_INST(48, LShr , ShiftInst ) // Logical Shift right (unsigned) +HANDLE_OTHER_INST(49, AShr , ShiftInst ) // Arithmetic shift right (signed) +HANDLE_OTHER_INST(50, Select , SelectInst ) // select instruction +HANDLE_OTHER_INST(51, UserOp1, Instruction) // May be used internally in a pass +HANDLE_OTHER_INST(52, UserOp2, Instruction) // Internal to passes only +HANDLE_OTHER_INST(53, VAArg , VAArgInst ) // vaarg instruction +HANDLE_OTHER_INST(54, ExtractElement, ExtractElementInst)// extract from vector. +HANDLE_OTHER_INST(55, InsertElement, InsertElementInst) // insert into vector +HANDLE_OTHER_INST(56, ShuffleVector, ShuffleVectorInst) // shuffle two vectors. + LAST_OTHER_INST(56) #undef FIRST_TERM_INST #undef HANDLE_TERM_INST @@ -155,6 +186,10 @@ #undef HANDLE_MEMORY_INST #undef LAST_MEMORY_INST +#undef FIRST_CAST_INST +#undef HANDLE_CAST_INST +#undef LAST_CAST_INST + #undef FIRST_OTHER_INST #undef HANDLE_OTHER_INST #undef LAST_OTHER_INST Index: llvm/include/llvm/Instruction.h diff -u llvm/include/llvm/Instruction.h:1.74 llvm/include/llvm/Instruction.h:1.75 --- llvm/include/llvm/Instruction.h:1.74 Sat Sep 30 17:20:34 2006 +++ llvm/include/llvm/Instruction.h Sun Nov 26 19:05:09 2006 @@ -125,6 +125,16 @@ return getOpcode() >= BinaryOpsBegin && getOpcode() < BinaryOpsEnd; } + /// @brief Determine if the OpCode is one of the CastInst instructions. + static inline bool isCast(unsigned OpCode) { + return OpCode >= CastOpsBegin && OpCode < CastOpsEnd; + } + + /// @brief Determine if this is one of the CastInst instructions. + inline bool isCast() const { + return isCast(getOpcode()); + } + /// isAssociative - Return true if the instruction is associative: /// /// Associative operators satisfy: x op (y op z) === (x op y) op z @@ -191,6 +201,13 @@ #include "llvm/Instruction.def" }; + enum CastOps { +#define FIRST_CAST_INST(N) CastOpsBegin = N, +#define HANDLE_CAST_INST(N, OPC, CLASS) OPC = N, +#define LAST_CAST_INST(N) CastOpsEnd = N+1 +#include "llvm/Instruction.def" + }; + enum OtherOps { #define FIRST_OTHER_INST(N) OtherOpsBegin = N, #define HANDLE_OTHER_INST(N, OPC, CLASS) OPC = N, Index: llvm/include/llvm/Instructions.h diff -u llvm/include/llvm/Instructions.h:1.46 llvm/include/llvm/Instructions.h:1.47 --- llvm/include/llvm/Instructions.h:1.46 Sun Nov 19 19:22:35 2006 +++ llvm/include/llvm/Instructions.h Sun Nov 26 19:05:09 2006 @@ -710,44 +710,6 @@ } }; -//===----------------------------------------------------------------------===// -// CastInst Class -//===----------------------------------------------------------------------===// - -/// CastInst - This class represents a cast from Operand[0] to the type of -/// the instruction (i->getType()). -/// -class CastInst : public UnaryInstruction { - CastInst(const CastInst &CI) - : UnaryInstruction(CI.getType(), Cast, CI.getOperand(0)) { - } -public: - CastInst(Value *S, const Type *Ty, const std::string &Name = "", - Instruction *InsertBefore = 0) - : UnaryInstruction(Ty, Cast, S, Name, InsertBefore) { - } - CastInst(Value *S, const Type *Ty, const std::string &Name, - BasicBlock *InsertAtEnd) - : UnaryInstruction(Ty, Cast, S, Name, InsertAtEnd) { - } - - /// isTruncIntCast - Return true if this is a truncating integer cast - /// instruction, e.g. a cast from long to uint. - bool isTruncIntCast() const; - - - virtual CastInst *clone() const; - - // Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const CastInst *) { return true; } - static inline bool classof(const Instruction *I) { - return I->getOpcode() == Cast; - } - static inline bool classof(const Value *V) { - return isa<Instruction>(V) && classof(cast<Instruction>(V)); - } -}; - //===----------------------------------------------------------------------===// // CallInst Class @@ -1770,6 +1732,477 @@ virtual void setSuccessorV(unsigned idx, BasicBlock *B); }; +//===----------------------------------------------------------------------===// +// TruncInst Class +//===----------------------------------------------------------------------===// + +/// @brief This class represents a truncation of integer types. +class TruncInst : public CastInst { + /// Private copy constructor + TruncInst(const TruncInst &CI) + : CastInst(CI.getType(), Trunc, CI.getOperand(0)) { + } +public: + /// @brief Constructor with insert-before-instruction semantics + TruncInst( + Value *S, ///< The value to be truncated + const Type *Ty, ///< The (smaller) type to truncate to + const std::string &Name = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// @brief Constructor with insert-at-end-of-block semantics + TruncInst( + Value *S, ///< The value to be truncated + const Type *Ty, ///< The (smaller) type to truncate to + const std::string &Name, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + /// @brief Clone an identical TruncInst + virtual CastInst *clone() const; + + /// @brief Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const TruncInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() == Trunc; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + +//===----------------------------------------------------------------------===// +// ZExtInst Class +//===----------------------------------------------------------------------===// + +/// @brief This class represents zero extension of integer types. +class ZExtInst : public CastInst { + /// @brief Private copy constructor + ZExtInst(const ZExtInst &CI) + : CastInst(CI.getType(), ZExt, CI.getOperand(0)) { + } +public: + /// @brief Constructor with insert-before-instruction semantics + ZExtInst( + Value *S, ///< The value to be zero extended + const Type *Ty, ///< The type to zero extend to + const std::string &Name = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// @brief Constructor with insert-at-end semantics. + ZExtInst( + Value *S, ///< The value to be zero extended + const Type *Ty, ///< The type to zero extend to + const std::string &Name, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + /// @brief Clone an identical ZExtInst + virtual CastInst *clone() const; + + /// @brief Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const ZExtInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() == ZExt; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + +//===----------------------------------------------------------------------===// +// SExtInst Class +//===----------------------------------------------------------------------===// + +/// @brief This class represents a sign extension of integer types. +class SExtInst : public CastInst { + /// @brief Private copy constructor + SExtInst(const SExtInst &CI) + : CastInst(CI.getType(), SExt, CI.getOperand(0)) { + } +public: + /// @brief Constructor with insert-before-instruction semantics + SExtInst( + Value *S, ///< The value to be sign extended + const Type *Ty, ///< The type to sign extend to + const std::string &Name = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// @brief Constructor with insert-at-end-of-block semantics + SExtInst( + Value *S, ///< The value to be sign extended + const Type *Ty, ///< The type to sign extend to + const std::string &Name, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + /// @brief Clone an identical SExtInst + virtual CastInst *clone() const; + + /// @brief Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const SExtInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() == SExt; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + +//===----------------------------------------------------------------------===// +// FPTruncInst Class +//===----------------------------------------------------------------------===// + +/// @brief This class represents a truncation of floating point types. +class FPTruncInst : public CastInst { + FPTruncInst(const FPTruncInst &CI) + : CastInst(CI.getType(), FPTrunc, CI.getOperand(0)) { + } +public: + /// @brief Constructor with insert-before-instruction semantics + FPTruncInst( + Value *S, ///< The value to be truncated + const Type *Ty, ///< The type to truncate to + const std::string &Name = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// @brief Constructor with insert-before-instruction semantics + FPTruncInst( + Value *S, ///< The value to be truncated + const Type *Ty, ///< The type to truncate to + const std::string &Name, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + /// @brief Clone an identical FPTruncInst + virtual CastInst *clone() const; + + /// @brief Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const FPTruncInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() == FPTrunc; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + +//===----------------------------------------------------------------------===// +// FPExtInst Class +//===----------------------------------------------------------------------===// + +/// @brief This class represents an extension of floating point types. +class FPExtInst : public CastInst { + FPExtInst(const FPExtInst &CI) + : CastInst(CI.getType(), FPExt, CI.getOperand(0)) { + } +public: + /// @brief Constructor with insert-before-instruction semantics + FPExtInst( + Value *S, ///< The value to be extended + const Type *Ty, ///< The type to extend to + const std::string &Name = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// @brief Constructor with insert-at-end-of-block semantics + FPExtInst( + Value *S, ///< The value to be extended + const Type *Ty, ///< The type to extend to + const std::string &Name, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + /// @brief Clone an identical FPExtInst + virtual CastInst *clone() const; + + /// @brief Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const FPExtInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() == FPExt; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + +//===----------------------------------------------------------------------===// +// UIToFPInst Class +//===----------------------------------------------------------------------===// + +/// @brief This class represents a cast unsigned integer to floating point. +class UIToFPInst : public CastInst { + UIToFPInst(const UIToFPInst &CI) + : CastInst(CI.getType(), UIToFP, CI.getOperand(0)) { + } +public: + /// @brief Constructor with insert-before-instruction semantics + UIToFPInst( + Value *S, ///< The value to be converted + const Type *Ty, ///< The type to convert to + const std::string &Name = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// @brief Constructor with insert-at-end-of-block semantics + UIToFPInst( + Value *S, ///< The value to be converted + const Type *Ty, ///< The type to convert to + const std::string &Name, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + /// @brief Clone an identical UIToFPInst + virtual CastInst *clone() const; + + /// @brief Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const UIToFPInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() == UIToFP; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + +//===----------------------------------------------------------------------===// +// SIToFPInst Class +//===----------------------------------------------------------------------===// + +/// @brief This class represents a cast from signed integer to floating point. +class SIToFPInst : public CastInst { + SIToFPInst(const SIToFPInst &CI) + : CastInst(CI.getType(), SIToFP, CI.getOperand(0)) { + } +public: + /// @brief Constructor with insert-before-instruction semantics + SIToFPInst( + Value *S, ///< The value to be converted + const Type *Ty, ///< The type to convert to + const std::string &Name = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// @brief Constructor with insert-at-end-of-block semantics + SIToFPInst( + Value *S, ///< The value to be converted + const Type *Ty, ///< The type to convert to + const std::string &Name, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + /// @brief Clone an identical SIToFPInst + virtual CastInst *clone() const; + + /// @brief Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const SIToFPInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() == SIToFP; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + +//===----------------------------------------------------------------------===// +// FPToUIInst Class +//===----------------------------------------------------------------------===// + +/// @brief This class represents a cast from floating point to unsigned integer +class FPToUIInst : public CastInst { + FPToUIInst(const FPToUIInst &CI) + : CastInst(CI.getType(), FPToUI, CI.getOperand(0)) { + } +public: + /// @brief Constructor with insert-before-instruction semantics + FPToUIInst( + Value *S, ///< The value to be converted + const Type *Ty, ///< The type to convert to + const std::string &Name = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// @brief Constructor with insert-at-end-of-block semantics + FPToUIInst( + Value *S, ///< The value to be converted + const Type *Ty, ///< The type to convert to + const std::string &Name, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< Where to insert the new instruction + ); + + /// @brief Clone an identical FPToUIInst + virtual CastInst *clone() const; + + /// @brief Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const FPToUIInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() == FPToUI; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + +//===----------------------------------------------------------------------===// +// FPToSIInst Class +//===----------------------------------------------------------------------===// + +/// @brief This class represents a cast from floating point to signed integer. +class FPToSIInst : public CastInst { + FPToSIInst(const FPToSIInst &CI) + : CastInst(CI.getType(), FPToSI, CI.getOperand(0)) { + } +public: + /// @brief Constructor with insert-before-instruction semantics + FPToSIInst( + Value *S, ///< The value to be converted + const Type *Ty, ///< The type to convert to + const std::string &Name = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// @brief Constructor with insert-at-end-of-block semantics + FPToSIInst( + Value *S, ///< The value to be converted + const Type *Ty, ///< The type to convert to + const std::string &Name, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + /// @brief Clone an identical FPToSIInst + virtual CastInst *clone() const; + + /// @brief Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const FPToSIInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() == FPToSI; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + +//===----------------------------------------------------------------------===// +// IntToPtrInst Class +//===----------------------------------------------------------------------===// + +/// @brief This class represents a cast from an integer to a pointer. +class IntToPtrInst : public CastInst { + IntToPtrInst(const IntToPtrInst &CI) + : CastInst(CI.getType(), IntToPtr, CI.getOperand(0)) { + } +public: + /// @brief Constructor with insert-before-instruction semantics + IntToPtrInst( + Value *S, ///< The value to be converted + const Type *Ty, ///< The type to convert to + const std::string &Name = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// @brief Constructor with insert-at-end-of-block semantics + IntToPtrInst( + Value *S, ///< The value to be converted + const Type *Ty, ///< The type to convert to + const std::string &Name, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + /// @brief Clone an identical IntToPtrInst + virtual CastInst *clone() const; + + // Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const IntToPtrInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() == IntToPtr; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + +//===----------------------------------------------------------------------===// +// PtrToIntInst Class +//===----------------------------------------------------------------------===// + +/// @brief This class represents a cast from a pointer to an integer +class PtrToIntInst : public CastInst { + PtrToIntInst(const PtrToIntInst &CI) + : CastInst(CI.getType(), PtrToInt, CI.getOperand(0)) { + } +public: + /// @brief Constructor with insert-before-instruction semantics + PtrToIntInst( + Value *S, ///< The value to be converted + const Type *Ty, ///< The type to convert to + const std::string &Name = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// @brief Constructor with insert-at-end-of-block semantics + PtrToIntInst( + Value *S, ///< The value to be converted + const Type *Ty, ///< The type to convert to + const std::string &Name, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + /// @brief Clone an identical PtrToIntInst + virtual CastInst *clone() const; + + // Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const PtrToIntInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() == PtrToInt; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + +//===----------------------------------------------------------------------===// +// BitCastInst Class +//===----------------------------------------------------------------------===// + +/// @brief This class represents a no-op cast from one type to another. +class BitCastInst : public CastInst { + BitCastInst(const BitCastInst &CI) + : CastInst(CI.getType(), BitCast, CI.getOperand(0)) { + } +public: + /// @brief Constructor with insert-before-instruction semantics + BitCastInst( + Value *S, ///< The value to be casted + const Type *Ty, ///< The type to casted to + const std::string &Name = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// @brief Constructor with insert-at-end-of-block semantics + BitCastInst( + Value *S, ///< The value to be casted + const Type *Ty, ///< The type to casted to + const std::string &Name, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + /// @brief Clone an identical BitCastInst + virtual CastInst *clone() const; + + // Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const BitCastInst *) { return true; } + static inline bool classof(const Instruction *I) { + return I->getOpcode() == BitCast; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + } // End llvm namespace #endif Index: llvm/include/llvm/Type.h diff -u llvm/include/llvm/Type.h:1.91 llvm/include/llvm/Type.h:1.92 --- llvm/include/llvm/Type.h:1.91 Thu Oct 26 13:22:45 2006 +++ llvm/include/llvm/Type.h Sun Nov 26 19:05:09 2006 @@ -194,10 +194,12 @@ /// inline bool isAbstract() const { return Abstract; } - /// isLosslesslyConvertibleTo - Return true if this type can be converted to - /// 'Ty' without any reinterpretation of bits. For example, uint to int. - /// - bool isLosslesslyConvertibleTo(const Type *Ty) const; + /// canLosslesslyBitCastTo - Return true if this type could be converted + /// with a lossless BitCast to type 'Ty'. For example, uint to int. BitCasts + /// are valid for types of the same size only where no re-interpretation of + /// the bits is done. + /// @brief Determine if this type could be losslessly bitcast to Ty + bool canLosslesslyBitCastTo(const Type *Ty) const; /// Here are some useful little methods to query what type derived types are _______________________________________________ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
