include/llvm/ExecutionEngine/GenericValue.h

//===-- GenericValue.h - Represent any type of LLVM value -------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// The GenericValue class is used to represent an LLVM value of arbitrary type.
//
//===----------------------------------------------------------------------===//


#ifndef GENERIC_VALUE_H
#define GENERIC_VALUE_H

#include "llvm/ADT/APInt.h"
#include "llvm/Support/DataTypes.h"

namespace llvm {

typedef void* PointerTy;
class APInt;

struct GenericValue {
  union {
    double          DoubleVal;
    float           FloatVal;
    PointerTy       PointerVal;
    struct { unsigned int first; unsigned int second; } UIntPairVal;
    unsigned char   Untyped[8];
  };
  APInt IntVal;   // also used for long doubles

  GenericValue() : DoubleVal(0.0), IntVal(1,0) {}
  explicit GenericValue(void *V) : PointerVal(V), IntVal(1,0) { }
};

inline GenericValue PTOGV(void *P) { return GenericValue(P); }
inline void* GVTOP(const GenericValue &GV) { return GV.PointerVal; }

} // End llvm namespace
#endif