diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/Constants.h | 9 | ||||
| -rw-r--r-- | include/llvm/InstrTypes.h | 27 |
2 files changed, 32 insertions, 4 deletions
diff --git a/include/llvm/Constants.h b/include/llvm/Constants.h index 06aaca6..3359138 100644 --- a/include/llvm/Constants.h +++ b/include/llvm/Constants.h @@ -541,8 +541,15 @@ public: const Type *Ty ///< The type to which the constant is converted ); + // This method uses the CastInst::getCastOpcode method to infer the + // cast opcode to use. // @brief Get a ConstantExpr Conversion operator that casts C to Ty - static Constant *getCast(Constant *C, const Type *Ty); + static Constant *getInferredCast(Constant *C, bool SrcIsSigned, + const Type *Ty, bool DestIsSigned); + + static Constant *getCast(Constant *C, const Type *Ty) { + return getInferredCast(C, C->getType()->isSigned(), Ty, Ty->isSigned()); + } /// @brief Return true if this is a convert constant expression bool isCast() const; diff --git a/include/llvm/InstrTypes.h b/include/llvm/InstrTypes.h index 0a489f3..07d13da 100644 --- a/include/llvm/InstrTypes.h +++ b/include/llvm/InstrTypes.h @@ -303,7 +303,9 @@ public: /// rules. static Instruction::CastOps getCastOpcode( const Value *Val, ///< The value to cast - const Type *Ty ///< The Type to which the value should be casted + bool SrcIsSigned, ///< Whether to treat the source as signed + const Type *Ty, ///< The Type to which the value should be casted + bool DstIsSigned ///< Whether to treate the dest. as signed ); /// Joins the create method (with insert-before-instruction semantics) above @@ -316,12 +318,21 @@ public: /// @brief Inline helper method to join create with getCastOpcode. inline static CastInst *createInferredCast( Value *S, ///< The value to be casted (operand 0) + bool SrcIsSigned, ///< Whether to treat the source as signed const Type *Ty, ///< Type to which operand should be casted + bool DstIsSigned, ///< Whether to treate the dest. as signed 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); + return create(getCastOpcode(S, SrcIsSigned, Ty, DstIsSigned), + S, Ty, Name, InsertBefore); } + 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 + ); /// Joins the get method (with insert-at-end-of-block semantics) method /// above with the getCastOpcode method. getOpcode(S,Ty) is called first to @@ -334,13 +345,23 @@ public: /// @brief Inline helper method to join create with getCastOpcode. inline static CastInst *createInferredCast( Value *S, ///< The value to be casted (operand 0) + bool SrcIsSigned, ///< Whether to treat the source as signed const Type *Ty, ///< Type to which operand should be casted + bool DstIsSigned, ///< Whether to treate the dest. as signed 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); + return create(getCastOpcode(S, SrcIsSigned, Ty, DstIsSigned), + S, Ty, Name, InsertAtEnd); } + 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 + ); + /// 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. |