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 15 #ifndef LLVM_EXECUTIONENGINE_GENERICVALUE_H 16 #define LLVM_EXECUTIONENGINE_GENERICVALUE_H 17 18 #include "llvm/ADT/APInt.h" 19 #include "llvm/Support/DataTypes.h" 20 21 namespace llvm { 22 23 typedef void* PointerTy; 24 class APInt; 25 26 struct GenericValue { 27 struct IntPair { 28 unsigned int first; 29 unsigned int second; 30 }; 31 union { 32 double DoubleVal; 33 float FloatVal; 34 PointerTy PointerVal; 35 struct IntPair UIntPairVal; 36 unsigned char Untyped[8]; 37 }; 38 APInt IntVal; // also used for long doubles. 39 // For aggregate data types. 40 std::vector<GenericValue> AggregateVal; 41 42 // to make code faster, set GenericValue to zero could be omitted, but it is 43 // potentially can cause problems, since GenericValue to store garbage 44 // instead of zero. 45 GenericValue() : IntVal(1,0) {UIntPairVal.first = 0; UIntPairVal.second = 0;} 46 explicit GenericValue(void *V) : PointerVal(V), IntVal(1,0) { } 47 }; 48 49 inline GenericValue PTOGV(void *P) { return GenericValue(P); } 50 inline void* GVTOP(const GenericValue &GV) { return GV.PointerVal; } 51 52 } // End llvm namespace. 53 #endif 54
