//===-- ConstantFolding.h - Internal Constant Folding Interface -*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file defines the (internal) constant folding interfaces for LLVM. These // interfaces are used by the ConstantExpr::get* methods to automatically fold // constants when possible. // // These operators may return a null object if they don't know how to perform // the specified operation on the specified constant types. // //===----------------------------------------------------------------------===// #ifndef LLVM_LIB_IR_CONSTANTFOLD_H #define LLVM_LIB_IR_CONSTANTFOLD_H namespace llvm { template <typename T> class ArrayRef; class Value; class Constant; class Type; // Constant fold various types of instruction... Constant *ConstantFoldCastInstruction( unsigned opcode, ///< The opcode of the cast Constant *V, ///< The source constant Type *DestTy ///< The destination type ); Constant *ConstantFoldSelectInstruction(Constant *Cond, Constant *V1, Constant *V2); Constant *ConstantFoldExtractElementInstruction(Constant *Val, Constant *Idx); Constant *ConstantFoldInsertElementInstruction(Constant *Val, Constant *Elt, Constant *Idx); Constant *ConstantFoldShuffleVectorInstruction(Constant *V1, Constant *V2, Constant *Mask); Constant *ConstantFoldExtractValueInstruction(Constant *Agg, ArrayRef<unsigned> Idxs); Constant *ConstantFoldInsertValueInstruction(Constant *Agg, Constant *Val, ArrayRef<unsigned> Idxs); Constant *ConstantFoldBinaryInstruction(unsigned Opcode, Constant *V1, Constant *V2); Constant *ConstantFoldCompareInstruction(unsigned short predicate, Constant *C1, Constant *C2); Constant *ConstantFoldGetElementPtr(Type *Ty, Constant *C, bool inBounds, ArrayRef<Constant *> Idxs); Constant *ConstantFoldGetElementPtr(Type *Ty, Constant *C, bool inBounds, ArrayRef<Value *> Idxs); } // End llvm namespace #endif