/Users/buildslave/jenkins/sharedspace/clang-stage2-coverage-R@2/llvm/include/llvm/ADT/ilist_node_base.h
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1 | | //===- llvm/ADT/ilist_node_base.h - Intrusive List Node Base -----*- 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 | | #ifndef LLVM_ADT_ILIST_NODE_BASE_H |
11 | | #define LLVM_ADT_ILIST_NODE_BASE_H |
12 | | |
13 | | #include "llvm/ADT/PointerIntPair.h" |
14 | | |
15 | | namespace llvm { |
16 | | |
17 | | /// Base class for ilist nodes. |
18 | | /// |
19 | | /// Optionally tracks whether this node is the sentinel. |
20 | | template <bool EnableSentinelTracking> class ilist_node_base; |
21 | | |
22 | | template <> class ilist_node_base<false> { |
23 | | ilist_node_base *Prev = nullptr; |
24 | | ilist_node_base *Next = nullptr; |
25 | | |
26 | | public: |
27 | 1.38G | void setPrev(ilist_node_base *Prev) { this->Prev = Prev; } |
28 | 1.38G | void setNext(ilist_node_base *Next) { this->Next = Next; } |
29 | 7.94G | ilist_node_base *getPrev() const { return Prev; } |
30 | 8.20G | ilist_node_base *getNext() const { return Next; } |
31 | | |
32 | 0 | bool isKnownSentinel() const { return false; } |
33 | 20.8M | void initializeSentinel() {} |
34 | | }; |
35 | | |
36 | | template <> class ilist_node_base<true> { |
37 | | PointerIntPair<ilist_node_base *, 1> PrevAndSentinel; |
38 | | ilist_node_base *Next = nullptr; |
39 | | |
40 | | public: |
41 | 316M | void setPrev(ilist_node_base *Prev) { PrevAndSentinel.setPointer(Prev); } |
42 | 316M | void setNext(ilist_node_base *Next) { this->Next = Next; } |
43 | 925M | ilist_node_base *getPrev() const { return PrevAndSentinel.getPointer(); } |
44 | 2.32G | ilist_node_base *getNext() const { return Next; } |
45 | | |
46 | 1.91G | bool isSentinel() const { return PrevAndSentinel.getInt(); } |
47 | 0 | bool isKnownSentinel() const { return isSentinel(); } |
48 | 5.99M | void initializeSentinel() { PrevAndSentinel.setInt(true); } |
49 | | }; |
50 | | |
51 | | } // end namespace llvm |
52 | | |
53 | | #endif // LLVM_ADT_ILIST_NODE_BASE_H |