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comparison include/llvm/Analysis/JumpInstrTableInfo.h @ 83:60c9769439b8 LLVM3.7

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LLVM 3.7
author Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
date Wed, 18 Feb 2015 14:55:36 +0900
parents 54457678186b
children
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78:af83660cff7b 83:60c9769439b8
14 #ifndef LLVM_ANALYSIS_JUMPINSTRTABLEINFO_H 14 #ifndef LLVM_ANALYSIS_JUMPINSTRTABLEINFO_H
15 #define LLVM_ANALYSIS_JUMPINSTRTABLEINFO_H 15 #define LLVM_ANALYSIS_JUMPINSTRTABLEINFO_H
16 16
17 #include "llvm/ADT/DenseMap.h" 17 #include "llvm/ADT/DenseMap.h"
18 #include "llvm/Pass.h" 18 #include "llvm/Pass.h"
19
20 #include <vector> 19 #include <vector>
21 20
22 namespace llvm { 21 namespace llvm {
23 class Function; 22 class Function;
24 class FunctionType; 23 class FunctionType;
35 /// for the jump-instruction tables. 34 /// for the jump-instruction tables.
36 class JumpInstrTableInfo : public ImmutablePass { 35 class JumpInstrTableInfo : public ImmutablePass {
37 public: 36 public:
38 static char ID; 37 static char ID;
39 38
40 JumpInstrTableInfo(); 39 /// The default byte alignment for jump tables is 16, which is large but
40 /// usually safe.
41 JumpInstrTableInfo(uint64_t ByteAlign = 16);
41 virtual ~JumpInstrTableInfo(); 42 virtual ~JumpInstrTableInfo();
42 const char *getPassName() const override { 43 const char *getPassName() const override {
43 return "Jump-Instruction Table Info"; 44 return "Jump-Instruction Table Info";
44 } 45 }
45 46
50 void insertEntry(FunctionType *TableFunTy, Function *Target, Function *Jump); 51 void insertEntry(FunctionType *TableFunTy, Function *Target, Function *Jump);
51 52
52 /// Gets the tables. 53 /// Gets the tables.
53 const JumpTables &getTables() const { return Tables; } 54 const JumpTables &getTables() const { return Tables; }
54 55
56 /// Gets the alignment in bytes of a jumptable entry.
57 uint64_t entryByteAlignment() const { return ByteAlignment; }
55 private: 58 private:
56 JumpTables Tables; 59 JumpTables Tables;
60
61 /// A power-of-two alignment of a jumptable entry.
62 uint64_t ByteAlignment;
57 }; 63 };
64
65 /// Creates a JumpInstrTableInfo pass with the given bound on entry size. This
66 /// bound specifies the maximum number of bytes needed to represent an
67 /// unconditional jump or a trap instruction in the back end currently in use.
68 ModulePass *createJumpInstrTableInfoPass(unsigned Bound);
58 } 69 }
59 70
60 #endif /* LLVM_ANALYSIS_JUMPINSTRTABLEINFO_H */ 71 #endif /* LLVM_ANALYSIS_JUMPINSTRTABLEINFO_H */