1 //===- LegacyPassManager.h - Legacy 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 legacy 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_IR_LEGACYPASSMANAGER_H
18 #define LLVM_IR_LEGACYPASSMANAGER_H
20 #include "llvm/Pass.h"
21 #include "llvm/Support/CBindingWrapping.h"
30 class PassManagerImpl;
31 class FunctionPassManagerImpl;
33 /// PassManagerBase - An abstract interface to allow code to add passes to
34 /// a pass manager without having to hard-code what kind of pass manager
36 class PassManagerBase {
38 virtual ~PassManagerBase();
40 /// Add a pass to the queue of passes to run. This passes ownership of
41 /// the Pass to the PassManager. When the PassManager is destroyed, the pass
42 /// will be destroyed as well, so there is no need to delete the pass. This
43 /// may even destroy the pass right away if it is found to be redundant. This
44 /// implies that all passes MUST be allocated with 'new'.
45 virtual void add(Pass *P) = 0;
48 /// PassManager manages ModulePassManagers
49 class PassManager : public PassManagerBase {
53 ~PassManager() override;
55 void add(Pass *P) override;
57 /// run - Execute all of the passes scheduled for execution. Keep track of
58 /// whether any of the passes modifies the module, and if so, return true.
62 /// PassManagerImpl_New is the actual class. PassManager is just the
63 /// wraper to publish simple pass manager interface
67 /// FunctionPassManager manages FunctionPasses and BasicBlockPassManagers.
68 class FunctionPassManager : public PassManagerBase {
70 /// FunctionPassManager ctor - This initializes the pass manager. It needs,
71 /// but does not take ownership of, the specified Module.
72 explicit FunctionPassManager(Module *M);
73 ~FunctionPassManager() override;
75 void add(Pass *P) override;
77 /// run - Execute all of the passes scheduled for execution. Keep
78 /// track of whether any of the passes modifies the function, and if
81 bool run(Function &F);
83 /// doInitialization - Run all of the initializers for the function passes.
85 bool doInitialization();
87 /// doFinalization - Run all of the finalizers for the function passes.
89 bool doFinalization();
92 FunctionPassManagerImpl *FPM;
96 } // End legacy namespace
98 // Create wrappers for C Binding types (see CBindingWrapping.h).
99 DEFINE_STDCXX_CONVERSION_FUNCTIONS(legacy::PassManagerBase, LLVMPassManagerRef)
101 } // End llvm namespace