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       1             : //===- GenericValue.h - Represent any type of LLVM value --------*- C++ -*-===//
       2             : //
       3             : //                     The LLVM Compiler Infrastructure
       4             : //
       5             : // This file is distributed under the University of Illinois Open Source
       6             : // License. See LICENSE.TXT for details.
       7             : //
       8             : //===----------------------------------------------------------------------===//
       9             : //
      10             : // The GenericValue class is used to represent an LLVM value of arbitrary type.
      11             : //
      12             : //===----------------------------------------------------------------------===//
      13             : 
      14             : #ifndef LLVM_EXECUTIONENGINE_GENERICVALUE_H
      15             : #define LLVM_EXECUTIONENGINE_GENERICVALUE_H
      16             : 
      17             : #include "llvm/ADT/APInt.h"
      18             : #include <vector>
      19             : 
      20             : namespace llvm {
      21             : 
      22             : using PointerTy = void *;
      23             : 
      24        2530 : struct GenericValue {
      25             :   struct IntPair {
      26             :     unsigned int first;
      27             :     unsigned int second;
      28             :   };
      29             :   union {
      30             :     double DoubleVal;
      31             :     float FloatVal;
      32             :     PointerTy PointerVal;
      33             :     struct IntPair UIntPairVal;
      34             :     unsigned char Untyped[8];
      35             :   };
      36             :   APInt IntVal; // also used for long doubles.
      37             :   // For aggregate data types.
      38             :   std::vector<GenericValue> AggregateVal;
      39             : 
      40             :   // to make code faster, set GenericValue to zero could be omitted, but it is
      41             :   // potentially can cause problems, since GenericValue to store garbage
      42             :   // instead of zero.
      43        5666 :   GenericValue() : IntVal(1, 0) {
      44        5658 :     UIntPairVal.first = 0;
      45        5622 :     UIntPairVal.second = 0;
      46             :   }
      47         170 :   explicit GenericValue(void *V) : PointerVal(V), IntVal(1, 0) {}
      48             : };
      49             : 
      50             : inline GenericValue PTOGV(void *P) { return GenericValue(P); }
      51           0 : inline void *GVTOP(const GenericValue &GV) { return GV.PointerVal; }
      52             : 
      53             : } // end namespace llvm
      54             : 
      55             : #endif // LLVM_EXECUTIONENGINE_GENERICVALUE_H