/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/include/clang/AST/BaseSubobject.h
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1 | | //===- BaseSubobject.h - BaseSubobject class --------------------*- 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 | | // This file provides a definition of the BaseSubobject class. |
10 | | // |
11 | | //===----------------------------------------------------------------------===// |
12 | | |
13 | | #ifndef LLVM_CLANG_AST_BASESUBOBJECT_H |
14 | | #define LLVM_CLANG_AST_BASESUBOBJECT_H |
15 | | |
16 | | #include "clang/AST/CharUnits.h" |
17 | | #include "clang/AST/DeclCXX.h" |
18 | | #include "llvm/ADT/DenseMapInfo.h" |
19 | | #include "llvm/Support/type_traits.h" |
20 | | #include <cstdint> |
21 | | #include <utility> |
22 | | |
23 | | namespace clang { |
24 | | |
25 | | class CXXRecordDecl; |
26 | | |
27 | | // BaseSubobject - Uniquely identifies a direct or indirect base class. |
28 | | // Stores both the base class decl and the offset from the most derived class to |
29 | | // the base class. Used for vtable and VTT generation. |
30 | | class BaseSubobject { |
31 | | /// Base - The base class declaration. |
32 | | const CXXRecordDecl *Base; |
33 | | |
34 | | /// BaseOffset - The offset from the most derived class to the base class. |
35 | | CharUnits BaseOffset; |
36 | | |
37 | | public: |
38 | 3.13k | BaseSubobject() = default; |
39 | | BaseSubobject(const CXXRecordDecl *Base, CharUnits BaseOffset) |
40 | 204k | : Base(Base), BaseOffset(BaseOffset) {} |
41 | | |
42 | | /// getBase - Returns the base class declaration. |
43 | 145k | const CXXRecordDecl *getBase() const { return Base; } |
44 | | |
45 | | /// getBaseOffset - Returns the base class offset. |
46 | 145k | CharUnits getBaseOffset() const { return BaseOffset; } |
47 | | |
48 | 1.15M | friend bool operator==(const BaseSubobject &LHS, const BaseSubobject &RHS) { |
49 | 1.15M | return LHS.Base == RHS.Base && LHS.BaseOffset == RHS.BaseOffset1.03M ; |
50 | 1.15M | } |
51 | | }; |
52 | | |
53 | | } // namespace clang |
54 | | |
55 | | namespace llvm { |
56 | | |
57 | | template<> struct DenseMapInfo<clang::BaseSubobject> { |
58 | 73.5k | static clang::BaseSubobject getEmptyKey() { |
59 | 73.5k | return clang::BaseSubobject( |
60 | 73.5k | DenseMapInfo<const clang::CXXRecordDecl *>::getEmptyKey(), |
61 | 73.5k | clang::CharUnits::fromQuantity(DenseMapInfo<int64_t>::getEmptyKey())); |
62 | 73.5k | } |
63 | | |
64 | 53.7k | static clang::BaseSubobject getTombstoneKey() { |
65 | 53.7k | return clang::BaseSubobject( |
66 | 53.7k | DenseMapInfo<const clang::CXXRecordDecl *>::getTombstoneKey(), |
67 | 53.7k | clang::CharUnits::fromQuantity(DenseMapInfo<int64_t>::getTombstoneKey())); |
68 | 53.7k | } |
69 | | |
70 | 25.1k | static unsigned getHashValue(const clang::BaseSubobject &Base) { |
71 | 25.1k | using PairTy = std::pair<const clang::CXXRecordDecl *, clang::CharUnits>; |
72 | | |
73 | 25.1k | return DenseMapInfo<PairTy>::getHashValue(PairTy(Base.getBase(), |
74 | 25.1k | Base.getBaseOffset())); |
75 | 25.1k | } |
76 | | |
77 | | static bool isEqual(const clang::BaseSubobject &LHS, |
78 | 1.15M | const clang::BaseSubobject &RHS) { |
79 | 1.15M | return LHS == RHS; |
80 | 1.15M | } |
81 | | }; |
82 | | |
83 | | } // namespace llvm |
84 | | |
85 | | #endif // LLVM_CLANG_AST_BASESUBOBJECT_H |