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GenericValue.h
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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 
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;
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.
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
PointerTy PointerVal
Definition: GenericValue.h:34
std::vector< GenericValue > AggregateVal
Definition: GenericValue.h:40
unsigned char Untyped[8]
Definition: GenericValue.h:36
This file implements a class to represent arbitrary precision integral constant values and operations...
#define P(N)
GenericValue(void *V)
Definition: GenericValue.h:46
struct IntPair UIntPairVal
Definition: GenericValue.h:35
void * GVTOP(const GenericValue &GV)
Definition: GenericValue.h:50
GenericValue PTOGV(void *P)
Definition: GenericValue.h:49
Class for arbitrary precision integers.
Definition: APInt.h:75
void * PointerTy
Definition: GenericValue.h:23