/Users/buildslave/jenkins/sharedspace/clang-stage2-coverage-R@2/llvm/include/llvm/IR/Comdat.h
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1 | | //===- llvm/IR/Comdat.h - Comdat definitions --------------------*- 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 | | /// @file |
11 | | /// This file contains the declaration of the Comdat class, which represents a |
12 | | /// single COMDAT in LLVM. |
13 | | // |
14 | | //===----------------------------------------------------------------------===// |
15 | | |
16 | | #ifndef LLVM_IR_COMDAT_H |
17 | | #define LLVM_IR_COMDAT_H |
18 | | |
19 | | namespace llvm { |
20 | | |
21 | | class raw_ostream; |
22 | | class StringRef; |
23 | | template <typename ValueTy> class StringMapEntry; |
24 | | |
25 | | // This is a Name X SelectionKind pair. The reason for having this be an |
26 | | // independent object instead of just adding the name and the SelectionKind |
27 | | // to a GlobalObject is that it is invalid to have two Comdats with the same |
28 | | // name but different SelectionKind. This structure makes that unrepresentable. |
29 | | class Comdat { |
30 | | public: |
31 | | enum SelectionKind { |
32 | | Any, ///< The linker may choose any COMDAT. |
33 | | ExactMatch, ///< The data referenced by the COMDAT must be the same. |
34 | | Largest, ///< The linker will choose the largest COMDAT. |
35 | | NoDuplicates, ///< No other Module may specify this COMDAT. |
36 | | SameSize, ///< The data referenced by the COMDAT must be the same size. |
37 | | }; |
38 | | |
39 | | Comdat(const Comdat &) = delete; |
40 | | Comdat(Comdat &&C); |
41 | | |
42 | 12.8k | SelectionKind getSelectionKind() const { return SK; } |
43 | 4.36k | void setSelectionKind(SelectionKind Val) { SK = Val; } |
44 | | StringRef getName() const; |
45 | | void print(raw_ostream &OS, bool IsForDebug = false) const; |
46 | | void dump() const; |
47 | | |
48 | | private: |
49 | | friend class Module; |
50 | | |
51 | | Comdat(); |
52 | | |
53 | | // Points to the map in Module. |
54 | | StringMapEntry<Comdat> *Name = nullptr; |
55 | | SelectionKind SK = Any; |
56 | | }; |
57 | | |
58 | 0 | inline raw_ostream &operator<<(raw_ostream &OS, const Comdat &C) { |
59 | 0 | C.print(OS); |
60 | 0 | return OS; |
61 | 0 | } |
62 | | |
63 | | } // end namespace llvm |
64 | | |
65 | | #endif // LLVM_IR_COMDAT_H |