1 //===-- ConstantHandling.h - Stuff for manipulating constants ---*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // WARNING: These operators may return a null object if I don't know how to
11 // perform the specified operation on the specified constant types.
13 //===----------------------------------------------------------------------===//
15 #ifndef CONSTANTHANDLING_H
16 #define CONSTANTHANDLING_H
28 // Binary Operators...
29 virtual Constant *add(const Constant *V1, const Constant *V2) const = 0;
30 virtual Constant *sub(const Constant *V1, const Constant *V2) const = 0;
31 virtual Constant *mul(const Constant *V1, const Constant *V2) const = 0;
32 virtual Constant *div(const Constant *V1, const Constant *V2) const = 0;
33 virtual Constant *rem(const Constant *V1, const Constant *V2) const = 0;
34 virtual Constant *op_and(const Constant *V1, const Constant *V2) const = 0;
35 virtual Constant *op_or (const Constant *V1, const Constant *V2) const = 0;
36 virtual Constant *op_xor(const Constant *V1, const Constant *V2) const = 0;
37 virtual Constant *shl(const Constant *V1, const Constant *V2) const = 0;
38 virtual Constant *shr(const Constant *V1, const Constant *V2) const = 0;
40 virtual Constant *lessthan(const Constant *V1, const Constant *V2) const = 0;
42 virtual Constant *equalto(const Constant *V1, const Constant *V2) const = 0;
44 // Casting operators. ick
45 virtual Constant *castToBool (const Constant *V) const = 0;
46 virtual Constant *castToSByte (const Constant *V) const = 0;
47 virtual Constant *castToUByte (const Constant *V) const = 0;
48 virtual Constant *castToShort (const Constant *V) const = 0;
49 virtual Constant *castToUShort(const Constant *V) const = 0;
50 virtual Constant *castToInt (const Constant *V) const = 0;
51 virtual Constant *castToUInt (const Constant *V) const = 0;
52 virtual Constant *castToLong (const Constant *V) const = 0;
53 virtual Constant *castToULong (const Constant *V) const = 0;
54 virtual Constant *castToFloat (const Constant *V) const = 0;
55 virtual Constant *castToDouble(const Constant *V) const = 0;
56 virtual Constant *castToPointer(const Constant *V,
57 const PointerType *Ty) const = 0;
59 // ConstRules::get - Return an instance of ConstRules for the specified
62 static ConstRules &get(const Constant *V1, const Constant *V2);
64 ConstRules(const ConstRules &); // Do not implement
65 ConstRules &operator=(const ConstRules &); // Do not implement
69 //===----------------------------------------------------------------------===//
70 // Implement higher level instruction folding type instructions
71 //===----------------------------------------------------------------------===//
73 // Constant fold various types of instruction...
74 Constant *ConstantFoldCastInstruction(const Constant *V, const Type *DestTy);
75 Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
77 Constant *ConstantFoldGetElementPtr(const Constant *C,
78 const std::vector<Constant*> &IdxList);
80 } // End llvm namespace