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comparison include/llvm/IR/BasicBlock.h @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents 95c75e76d11b
children 60c9769439b8
comparison
equal deleted inserted replaced
34:e874dbf0ad9d 77:54457678186b
21 #include "llvm/Support/CBindingWrapping.h" 21 #include "llvm/Support/CBindingWrapping.h"
22 #include "llvm/Support/DataTypes.h" 22 #include "llvm/Support/DataTypes.h"
23 23
24 namespace llvm { 24 namespace llvm {
25 25
26 class CallInst;
26 class LandingPadInst; 27 class LandingPadInst;
27 class TerminatorInst; 28 class TerminatorInst;
28 class LLVMContext; 29 class LLVMContext;
29 class BlockAddress; 30 class BlockAddress;
30 31
88 /// 89 ///
89 /// If the function parameter is specified, the basic block is automatically 90 /// If the function parameter is specified, the basic block is automatically
90 /// inserted at either the end of the function (if InsertBefore is null), or 91 /// inserted at either the end of the function (if InsertBefore is null), or
91 /// before the specified basic block. 92 /// before the specified basic block.
92 explicit BasicBlock(LLVMContext &C, const Twine &Name = "", 93 explicit BasicBlock(LLVMContext &C, const Twine &Name = "",
93 Function *Parent = 0, BasicBlock *InsertBefore = 0); 94 Function *Parent = nullptr,
95 BasicBlock *InsertBefore = nullptr);
94 public: 96 public:
95 /// \brief Get the context in which this basic block lives. 97 /// \brief Get the context in which this basic block lives.
96 LLVMContext &getContext() const; 98 LLVMContext &getContext() const;
97 99
98 /// Instruction iterators... 100 /// Instruction iterators...
105 /// 107 ///
106 /// If the Parent parameter is specified, the basic block is automatically 108 /// If the Parent parameter is specified, the basic block is automatically
107 /// inserted at either the end of the function (if InsertBefore is 0), or 109 /// inserted at either the end of the function (if InsertBefore is 0), or
108 /// before the specified basic block. 110 /// before the specified basic block.
109 static BasicBlock *Create(LLVMContext &Context, const Twine &Name = "", 111 static BasicBlock *Create(LLVMContext &Context, const Twine &Name = "",
110 Function *Parent = 0,BasicBlock *InsertBefore = 0) { 112 Function *Parent = nullptr,
113 BasicBlock *InsertBefore = nullptr) {
111 return new BasicBlock(Context, Name, Parent, InsertBefore); 114 return new BasicBlock(Context, Name, Parent, InsertBefore);
112 } 115 }
113 ~BasicBlock(); 116 ~BasicBlock();
114 117
115 /// \brief Return the enclosing method, or null if none. 118 /// \brief Return the enclosing method, or null if none.
116 const Function *getParent() const { return Parent; } 119 const Function *getParent() const { return Parent; }
117 Function *getParent() { return Parent; } 120 Function *getParent() { return Parent; }
121
122 const DataLayout *getDataLayout() const;
118 123
119 /// \brief Returns the terminator instruction if the block is well formed or 124 /// \brief Returns the terminator instruction if the block is well formed or
120 /// null if the block is not well formed. 125 /// null if the block is not well formed.
121 TerminatorInst *getTerminator(); 126 TerminatorInst *getTerminator();
122 const TerminatorInst *getTerminator() const; 127 const TerminatorInst *getTerminator() const;
128
129 /// \brief Returns the call instruction marked 'musttail' prior to the
130 /// terminating return instruction of this basic block, if such a call is
131 /// present. Otherwise, returns null.
132 CallInst *getTerminatingMustTailCall();
133 const CallInst *getTerminatingMustTailCall() const {
134 return const_cast<BasicBlock *>(this)->getTerminatingMustTailCall();
135 }
123 136
124 /// \brief Returns a pointer to the first instruction in this block that is 137 /// \brief Returns a pointer to the first instruction in this block that is
125 /// not a PHINode instruction. 138 /// not a PHINode instruction.
126 /// 139 ///
127 /// When adding instructions to the beginning of the basic block, they should 140 /// When adding instructions to the beginning of the basic block, they should
167 180
168 /// \brief Unlink this basic block from its current function and insert it 181 /// \brief Unlink this basic block from its current function and insert it
169 /// right after \p MovePos in the function \p MovePos lives in. 182 /// right after \p MovePos in the function \p MovePos lives in.
170 void moveAfter(BasicBlock *MovePos); 183 void moveAfter(BasicBlock *MovePos);
171 184
172 185 /// \brief Insert unlinked basic block into a function.
173 /// \brief Return this block if it has a single predecessor block. Otherwise 186 ///
174 /// return a null pointer. 187 /// Inserts an unlinked basic block into \c Parent. If \c InsertBefore is
188 /// provided, inserts before that basic block, otherwise inserts at the end.
189 ///
190 /// \pre \a getParent() is \c nullptr.
191 void insertInto(Function *Parent, BasicBlock *InsertBefore = nullptr);
192
193 /// \brief Return the predecessor of this block if it has a single predecessor
194 /// block. Otherwise return a null pointer.
175 BasicBlock *getSinglePredecessor(); 195 BasicBlock *getSinglePredecessor();
176 const BasicBlock *getSinglePredecessor() const { 196 const BasicBlock *getSinglePredecessor() const {
177 return const_cast<BasicBlock*>(this)->getSinglePredecessor(); 197 return const_cast<BasicBlock*>(this)->getSinglePredecessor();
178 } 198 }
179 199
180 /// \brief Return this block if it has a unique predecessor block. Otherwise return a null pointer. 200 /// \brief Return the predecessor of this block if it has a unique predecessor
201 /// block. Otherwise return a null pointer.
181 /// 202 ///
182 /// Note that unique predecessor doesn't mean single edge, there can be 203 /// Note that unique predecessor doesn't mean single edge, there can be
183 /// multiple edges from the unique predecessor to this block (for example a 204 /// multiple edges from the unique predecessor to this block (for example a
184 /// switch statement with multiple cases having the same destination). 205 /// switch statement with multiple cases having the same destination).
185 BasicBlock *getUniquePredecessor(); 206 BasicBlock *getUniquePredecessor();