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GenericValue.h

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00001 //===-- GenericValue.h - Represent any type of LLVM value -------*- C++ -*-===//
00002 // 
00003 //                     The LLVM Compiler Infrastructure
00004 //
00005 // This file was developed by the LLVM research group and is distributed under
00006 // the University of Illinois Open Source License. See LICENSE.TXT for details.
00007 // 
00008 //===----------------------------------------------------------------------===//
00009 // 
00010 // The GenericValue class is used to represent an LLVM value of arbitrary type.
00011 //
00012 //===----------------------------------------------------------------------===//
00013 
00014 
00015 #ifndef GENERIC_VALUE_H
00016 #define GENERIC_VALUE_H
00017 
00018 #include "llvm/Support/DataTypes.h"
00019 
00020 namespace llvm {
00021 
00022 typedef uintptr_t PointerTy;
00023 
00024 union GenericValue {
00025   bool            BoolVal;
00026   unsigned char   UByteVal;
00027   signed   char   SByteVal;
00028   unsigned short  UShortVal;
00029   signed   short  ShortVal;
00030   unsigned int    UIntVal;
00031   signed   int    IntVal;
00032   uint64_t        ULongVal;
00033   int64_t         LongVal;
00034   double          DoubleVal;
00035   float           FloatVal;
00036   struct { unsigned int first; unsigned int second; } UIntPairVal;
00037   PointerTy       PointerVal;
00038   unsigned char   Untyped[8];
00039 
00040   GenericValue() {}
00041   GenericValue(void *V) {
00042     PointerVal = (PointerTy)(intptr_t)V;
00043   }
00044 };
00045 
00046 inline GenericValue PTOGV(void *P) { return GenericValue(P); }
00047 inline void* GVTOP(const GenericValue &GV) {
00048   return (void*)(intptr_t)GV.PointerVal;
00049 }
00050 
00051 } // End llvm namespace
00052 #endif