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annotate include/llvm/IR/LegacyPassManager.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 afa8332a0e37
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1 //===- LegacyPassManager.h - Legacy Container for Passes --------*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file defines the legacy PassManager class. This class is used to hold,
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11 // maintain, and optimize execution of Passes. The PassManager class ensures
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12 // that analysis results are available before a pass runs, and that Pass's are
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13 // destroyed when the PassManager is destroyed.
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14 //
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15 //===----------------------------------------------------------------------===//
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16
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17 #ifndef LLVM_IR_LEGACYPASSMANAGER_H
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18 #define LLVM_IR_LEGACYPASSMANAGER_H
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19
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20 #include "llvm/Pass.h"
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21 #include "llvm/Support/CBindingWrapping.h"
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22
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23 namespace llvm {
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24
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25 class Pass;
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26 class Module;
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27
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28 namespace legacy {
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29
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30 class PassManagerImpl;
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31 class FunctionPassManagerImpl;
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32
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33 /// PassManagerBase - An abstract interface to allow code to add passes to
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34 /// a pass manager without having to hard-code what kind of pass manager
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35 /// it is.
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36 class PassManagerBase {
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37 public:
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38 virtual ~PassManagerBase();
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39
83
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40 /// Add a pass to the queue of passes to run. This passes ownership of
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41 /// the Pass to the PassManager. When the PassManager is destroyed, the pass
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42 /// will be destroyed as well, so there is no need to delete the pass. This
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43 /// may even destroy the pass right away if it is found to be redundant. This
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44 /// implies that all passes MUST be allocated with 'new'.
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45 virtual void add(Pass *P) = 0;
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46 };
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47
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48 /// PassManager manages ModulePassManagers
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49 class PassManager : public PassManagerBase {
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50 public:
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51
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52 PassManager();
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53 ~PassManager();
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54
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55 void add(Pass *P) override;
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56
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57 /// run - Execute all of the passes scheduled for execution. Keep track of
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58 /// whether any of the passes modifies the module, and if so, return true.
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59 bool run(Module &M);
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60
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61 private:
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62 /// PassManagerImpl_New is the actual class. PassManager is just the
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63 /// wraper to publish simple pass manager interface
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64 PassManagerImpl *PM;
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65 };
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66
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67 /// FunctionPassManager manages FunctionPasses and BasicBlockPassManagers.
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68 class FunctionPassManager : public PassManagerBase {
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69 public:
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70 /// FunctionPassManager ctor - This initializes the pass manager. It needs,
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71 /// but does not take ownership of, the specified Module.
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72 explicit FunctionPassManager(Module *M);
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73 ~FunctionPassManager();
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74
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75 void add(Pass *P) override;
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76
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77 /// run - Execute all of the passes scheduled for execution. Keep
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78 /// track of whether any of the passes modifies the function, and if
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79 /// so, return true.
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80 ///
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81 bool run(Function &F);
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82
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83 /// doInitialization - Run all of the initializers for the function passes.
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84 ///
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85 bool doInitialization();
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86
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87 /// doFinalization - Run all of the finalizers for the function passes.
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88 ///
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89 bool doFinalization();
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90
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91 private:
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92 FunctionPassManagerImpl *FPM;
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93 Module *M;
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94 };
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95
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96 } // End legacy namespace
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97
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98 // Create wrappers for C Binding types (see CBindingWrapping.h).
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99 DEFINE_STDCXX_CONVERSION_FUNCTIONS(legacy::PassManagerBase, LLVMPassManagerRef)
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100
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101 } // End llvm namespace
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102
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103 #endif