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Move this file to lib/VMCore

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10804 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2004-01-12 20:47:29 +00:00
parent 731ba7f032
commit 302753863d
1 changed files with 0 additions and 102 deletions
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include/llvm/ConstantHandling.h
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//===-- ConstantHandling.h - Stuff for manipulating constants ---*- 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.
//
//===----------------------------------------------------------------------===//
//
// WARNING: These operators may return a null object if I don't know how to
// perform the specified operation on the specified constant types.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CONSTANTHANDLING_H
#define LLVM_CONSTANTHANDLING_H
#include "llvm/Constants.h"
#include "llvm/Type.h"
namespace llvm {
class PointerType;
struct ConstRules {
ConstRules() {}
// Binary Operators...
virtual Constant *add(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *sub(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *mul(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *div(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *rem(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *op_and(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *op_or (const Constant *V1, const Constant *V2) const = 0;
virtual Constant *op_xor(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *shl(const Constant *V1, const Constant *V2) const = 0;
virtual Constant *shr(const Constant *V1, const Constant *V2) const = 0;
virtual ConstantBool *lessthan(const Constant *V1,
const Constant *V2) const = 0;
virtual ConstantBool *equalto(const Constant *V1,
const Constant *V2) const = 0;
// Casting operators. ick
virtual ConstantBool *castToBool (const Constant *V) const = 0;
virtual ConstantSInt *castToSByte (const Constant *V) const = 0;
virtual ConstantUInt *castToUByte (const Constant *V) const = 0;
virtual ConstantSInt *castToShort (const Constant *V) const = 0;
virtual ConstantUInt *castToUShort(const Constant *V) const = 0;
virtual ConstantSInt *castToInt (const Constant *V) const = 0;
virtual ConstantUInt *castToUInt (const Constant *V) const = 0;
virtual ConstantSInt *castToLong (const Constant *V) const = 0;
virtual ConstantUInt *castToULong (const Constant *V) const = 0;
virtual ConstantFP *castToFloat (const Constant *V) const = 0;
virtual ConstantFP *castToDouble(const Constant *V) const = 0;
virtual Constant *castToPointer(const Constant *V,
const PointerType *Ty) const = 0;
inline Constant *castTo(const Constant *V, const Type *Ty) const {
switch (Ty->getPrimitiveID()) {
case Type::BoolTyID: return castToBool(V);
case Type::UByteTyID: return castToUByte(V);
case Type::SByteTyID: return castToSByte(V);
case Type::UShortTyID: return castToUShort(V);
case Type::ShortTyID: return castToShort(V);
case Type::UIntTyID: return castToUInt(V);
case Type::IntTyID: return castToInt(V);
case Type::ULongTyID: return castToULong(V);
case Type::LongTyID: return castToLong(V);
case Type::FloatTyID: return castToFloat(V);
case Type::DoubleTyID: return castToDouble(V);
case Type::PointerTyID:
return castToPointer(V, reinterpret_cast<const PointerType*>(Ty));
default: return 0;
}
}
// ConstRules::get - Return an instance of ConstRules for the specified
// constant operands.
//
static ConstRules &get(const Constant *V1, const Constant *V2);
private:
ConstRules(const ConstRules &); // Do not implement
ConstRules &operator=(const ConstRules &); // Do not implement
};
//===----------------------------------------------------------------------===//
// Implement higher level instruction folding type instructions
//===----------------------------------------------------------------------===//
// Constant fold various types of instruction...
Constant *ConstantFoldCastInstruction(const Constant *V, const Type *DestTy);
Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
const Constant *V2);
Constant *ConstantFoldGetElementPtr(const Constant *C,
const std::vector<Constant*> &IdxList);
} // End llvm namespace
#endif