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 #include <vector> 21 22 namespace llvm { 23 24 typedef void* PointerTy; 25 class APInt; 26 27 struct GenericValue { 28 struct IntPair { 29 unsigned int first; 30 unsigned int second; 31 }; 32 union { 33 double DoubleVal; 34 float FloatVal; 35 PointerTy PointerVal; 36 struct IntPair UIntPairVal; 37 unsigned char Untyped[8]; 38 }; 39 APInt IntVal; // also used for long doubles. 40 // For aggregate data types. 41 std::vector<GenericValue> AggregateVal; 42 43 // to make code faster, set GenericValue to zero could be omitted, but it is 44 // potentially can cause problems, since GenericValue to store garbage 45 // instead of zero. GenericValueGenericValue46 GenericValue() : IntVal(1,0) {UIntPairVal.first = 0; UIntPairVal.second = 0;} GenericValueGenericValue47 explicit GenericValue(void *V) : PointerVal(V), IntVal(1,0) { } 48 }; 49 PTOGV(void * P)50inline GenericValue PTOGV(void *P) { return GenericValue(P); } GVTOP(const GenericValue & GV)51inline void* GVTOP(const GenericValue &GV) { return GV.PointerVal; } 52 53 } // End llvm namespace. 54 #endif 55