1 //===- llvm/PassManager.h - Container for Passes ----------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the PassManager class. This class is used to hold,
11 // maintain, and optimize execution of Passes. The PassManager class ensures
12 // that analysis results are available before a pass runs, and that Pass's are
13 // destroyed when the PassManager is destroyed.
15 //===----------------------------------------------------------------------===//
17 #ifndef LLVM_PASSMANAGER_H
18 #define LLVM_PASSMANAGER_H
20 #include "llvm/Pass.h"
29 class PassManagerImpl;
30 class FunctionPassManagerImpl;
32 /// PassManagerBase - An abstract interface to allow code to add passes to
33 /// a pass manager without having to hard-code what kind of pass manager
35 class PassManagerBase {
37 virtual ~PassManagerBase();
39 /// add - Add a pass to the queue of passes to run. This passes ownership of
40 /// the Pass to the PassManager. When the PassManager is destroyed, the pass
41 /// will be destroyed as well, so there is no need to delete the pass. This
42 /// implies that all passes MUST be allocated with 'new'.
43 virtual void add(Pass *P) = 0;
46 /// PassManager manages ModulePassManagers
47 class PassManager : public PassManagerBase {
53 /// add - Add a pass to the queue of passes to run. This passes ownership of
54 /// the Pass to the PassManager. When the PassManager is destroyed, the pass
55 /// will be destroyed as well, so there is no need to delete the pass. This
56 /// implies that all passes MUST be allocated with 'new'.
59 /// run - Execute all of the passes scheduled for execution. Keep track of
60 /// whether any of the passes modifies the module, and if so, return true.
65 /// PassManagerImpl_New is the actual class. PassManager is just the
66 /// wraper to publish simple pass manager interface
70 /// FunctionPassManager manages FunctionPasses and BasicBlockPassManagers.
71 class FunctionPassManager : public PassManagerBase {
73 /// FunctionPassManager ctor - This initializes the pass manager. It needs,
74 /// but does not take ownership of, the specified module provider.
75 explicit FunctionPassManager(ModuleProvider *P);
76 ~FunctionPassManager();
78 /// add - Add a pass to the queue of passes to run. This passes
79 /// ownership of the Pass to the PassManager. When the
80 /// PassManager_X is destroyed, the pass will be destroyed as well, so
81 /// there is no need to delete the pass. (TODO delete passes.)
82 /// This implies that all passes MUST be allocated with 'new'.
85 /// run - Execute all of the passes scheduled for execution. Keep
86 /// track of whether any of the passes modifies the function, and if
89 bool run(Function &F);
91 /// doInitialization - Run all of the initializers for the function passes.
93 bool doInitialization();
95 /// doFinalization - Run all of the finalizers for the function passes.
97 bool doFinalization();
99 /// getModuleProvider - Return the module provider that this passmanager is
100 /// currently using. This is the module provider that it uses when a function
101 /// is optimized that is non-resident in the module.
102 ModuleProvider *getModuleProvider() const { return MP; }
103 void setModuleProvider(ModuleProvider *NewMP) { MP = NewMP; }
106 FunctionPassManagerImpl *FPM;
110 } // End llvm namespace