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 | |
19 | namespace llvm { |
20 | |
21 | using PointerTy = void *; |
22 | |
23 | struct 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 | |
49 | inline GenericValue PTOGV(void *P) { return GenericValue(P); } |
50 | inline void *GVTOP(const GenericValue &GV) { return GV.PointerVal; } |
51 | |
52 | } // end namespace llvm |
53 | |
54 | #endif // LLVM_EXECUTIONENGINE_GENERICVALUE_H |
55 | |