1//===- GenericValue.h - Represent any type of LLVM value --------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// The GenericValue class is used to represent an LLVM value of arbitrary type.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_EXECUTIONENGINE_GENERICVALUE_H
14#define LLVM_EXECUTIONENGINE_GENERICVALUE_H
15
16#include "llvm/ADT/APInt.h"
17#include <vector>
18
19namespace llvm {
20
21using PointerTy = void *;
22
23struct GenericValue {
24 struct IntPair {
25 unsigned int first;
26 unsigned int second;
27 };
28 union {
29 double DoubleVal;
30 float FloatVal;
31 PointerTy PointerVal;
32 struct IntPair UIntPairVal;
33 unsigned char Untyped[8];
34 };
35 APInt IntVal; // also used for long doubles.
36 // For aggregate data types.
37 std::vector<GenericValue> AggregateVal;
38
39 // to make code faster, set GenericValue to zero could be omitted, but it is
40 // potentially can cause problems, since GenericValue to store garbage
41 // instead of zero.
42 GenericValue() : IntVal(1, 0) {
43 UIntPairVal.first = 0;
44 UIntPairVal.second = 0;
45 }
46 explicit GenericValue(void *V) : PointerVal(V), IntVal(1, 0) {}
47};
48
49inline GenericValue PTOGV(void *P) { return GenericValue(P); }
50inline void *GVTOP(const GenericValue &GV) { return GV.PointerVal; }
51
52} // end namespace llvm
53
54#endif // LLVM_EXECUTIONENGINE_GENERICVALUE_H
55