| //===-- ConstantFolding.h - Internal Constant Folding Interface -*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file was developed by the LLVM research group and 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 I don't know how to perform the |
| // specified operation on the specified constant types. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef CONSTANTFOLDING_H |
| #define CONSTANTFOLDING_H |
| |
| #include <vector> |
| |
| namespace llvm { |
| class Value; |
| class Constant; |
| class Type; |
| |
| // Constant fold various types of instruction... |
| Constant *ConstantFoldCastInstruction(const Constant *V, const Type *DestTy); |
| Constant *ConstantFoldSelectInstruction(const Constant *Cond, |
| const Constant *V1, |
| const Constant *V2); |
| Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1, |
| const Constant *V2); |
| Constant *ConstantFoldGetElementPtr(const Constant *C, |
| const std::vector<Value*> &IdxList); |
| } // End llvm namespace |
| |
| #endif |
