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1 //===- subzero/src/IceLiveness.h - Liveness analysis ------------*- C++ -*-===// | 1 //===- subzero/src/IceLiveness.h - Liveness analysis ------------*- C++ -*-===// |
2 // | 2 // |
3 // The Subzero Code Generator | 3 // The Subzero Code Generator |
4 // | 4 // |
5 // This file is distributed under the University of Illinois Open Source | 5 // This file is distributed under the University of Illinois Open Source |
6 // License. See LICENSE.TXT for details. | 6 // License. See LICENSE.TXT for details. |
7 // | 7 // |
8 //===----------------------------------------------------------------------===// | 8 //===----------------------------------------------------------------------===// |
9 // | 9 // |
10 // This file declares the Liveness and LivenessNode classes, | 10 // This file declares the Liveness and LivenessNode classes, |
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39 // LivenessNode::NumGlobals. | 39 // LivenessNode::NumGlobals. |
40 llvm::BitVector LiveIn, LiveOut; | 40 llvm::BitVector LiveIn, LiveOut; |
41 // LiveBegin and LiveEnd track the instruction numbers of the start | 41 // LiveBegin and LiveEnd track the instruction numbers of the start |
42 // and end of each variable's live range within this block. The | 42 // and end of each variable's live range within this block. The |
43 // size of each vector is NumLocals + Liveness::NumGlobals. | 43 // size of each vector is NumLocals + Liveness::NumGlobals. |
44 std::vector<InstNumberT> LiveBegin, LiveEnd; | 44 std::vector<InstNumberT> LiveBegin, LiveEnd; |
45 | 45 |
46 private: | 46 private: |
47 // TODO: Disable these constructors when Liveness::Nodes is no | 47 // TODO: Disable these constructors when Liveness::Nodes is no |
48 // longer an STL container. | 48 // longer an STL container. |
49 // LivenessNode(const LivenessNode &) LLVM_DELETED_FUNCTION; | 49 // LivenessNode(const LivenessNode &) = delete; |
50 // LivenessNode &operator=(const LivenessNode &) LLVM_DELETED_FUNCTION; | 50 // LivenessNode &operator=(const LivenessNode &) = delete; |
51 }; | 51 }; |
52 | 52 |
53 class Liveness { | 53 class Liveness { |
54 public: | 54 public: |
55 Liveness(Cfg *Func, LivenessMode Mode) | 55 Liveness(Cfg *Func, LivenessMode Mode) |
56 : Func(Func), Mode(Mode), NumGlobals(0) {} | 56 : Func(Func), Mode(Mode), NumGlobals(0) {} |
57 void init(); | 57 void init(); |
58 Variable *getVariable(SizeT LiveIndex, const CfgNode *Node) const; | 58 Variable *getVariable(SizeT LiveIndex, const CfgNode *Node) const; |
59 SizeT getLiveIndex(const Variable *Var) const; | 59 SizeT getLiveIndex(const Variable *Var) const; |
60 SizeT getNumGlobalVars() const { return NumGlobals; } | 60 SizeT getNumGlobalVars() const { return NumGlobals; } |
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84 // Size of Nodes is Cfg::Nodes.size(). | 84 // Size of Nodes is Cfg::Nodes.size(). |
85 std::vector<LivenessNode> Nodes; | 85 std::vector<LivenessNode> Nodes; |
86 // VarToLiveMap maps a Variable's Variable::Number to its live index | 86 // VarToLiveMap maps a Variable's Variable::Number to its live index |
87 // within its basic block. | 87 // within its basic block. |
88 std::vector<SizeT> VarToLiveMap; | 88 std::vector<SizeT> VarToLiveMap; |
89 // LiveToVarMap is analogous to LivenessNode::LiveToVarMap, but for | 89 // LiveToVarMap is analogous to LivenessNode::LiveToVarMap, but for |
90 // non-local variables. | 90 // non-local variables. |
91 std::vector<Variable *> LiveToVarMap; | 91 std::vector<Variable *> LiveToVarMap; |
92 // LiveRanges maps a Variable::Number to its live range. | 92 // LiveRanges maps a Variable::Number to its live range. |
93 std::vector<LiveRange> LiveRanges; | 93 std::vector<LiveRange> LiveRanges; |
94 Liveness(const Liveness &) LLVM_DELETED_FUNCTION; | 94 Liveness(const Liveness &) = delete; |
95 Liveness &operator=(const Liveness &) LLVM_DELETED_FUNCTION; | 95 Liveness &operator=(const Liveness &) = delete; |
96 }; | 96 }; |
97 | 97 |
98 } // end of namespace Ice | 98 } // end of namespace Ice |
99 | 99 |
100 #endif // SUBZERO_SRC_ICELIVENESS_H | 100 #endif // SUBZERO_SRC_ICELIVENESS_H |
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