LLVM API Documentation
00001 //===- llvm/PassManager.h - Container for Passes ----------------*- C++ -*-===// 00002 // 00003 // The LLVM Compiler Infrastructure 00004 // 00005 // This file was developed by the LLVM research group and is distributed under 00006 // the University of Illinois Open Source License. See LICENSE.TXT for details. 00007 // 00008 //===----------------------------------------------------------------------===// 00009 // 00010 // This file defines the PassManager class. This class is used to hold, 00011 // maintain, and optimize execution of Passes. The PassManager class ensures 00012 // that analysis results are available before a pass runs, and that Pass's are 00013 // destroyed when the PassManager is destroyed. 00014 // 00015 //===----------------------------------------------------------------------===// 00016 00017 #ifndef LLVM_PASSMANAGER_H 00018 #define LLVM_PASSMANAGER_H 00019 00020 namespace llvm { 00021 00022 class Pass; 00023 class ModulePass; 00024 class Module; 00025 class ModuleProvider; 00026 template<class UnitType> class PassManagerT; 00027 00028 class PassManager { 00029 PassManagerT<Module> *PM; // This is a straightforward Pimpl class 00030 public: 00031 PassManager(); 00032 ~PassManager(); 00033 00034 /// add - Add a pass to the queue of passes to run. This passes ownership of 00035 /// the Pass to the PassManager. When the PassManager is destroyed, the pass 00036 /// will be destroyed as well, so there is no need to delete the pass. This 00037 /// implies that all passes MUST be allocated with 'new'. 00038 /// 00039 void add(Pass *P); 00040 00041 /// run - Execute all of the passes scheduled for execution. Keep track of 00042 /// whether any of the passes modifies the module, and if so, return true. 00043 /// 00044 bool run(Module &M); 00045 }; 00046 00047 class FunctionPass; 00048 class ImmutablePass; 00049 class Function; 00050 00051 class FunctionPassManager { 00052 PassManagerT<Function> *PM; // This is a straightforward Pimpl class 00053 ModuleProvider *MP; 00054 public: 00055 FunctionPassManager(ModuleProvider *P); 00056 ~FunctionPassManager(); 00057 00058 /// add - Add a pass to the queue of passes to run. This passes 00059 /// ownership of the FunctionPass to the PassManager. When the 00060 /// PassManager is destroyed, the pass will be destroyed as well, so 00061 /// there is no need to delete the pass. This implies that all 00062 /// passes MUST be allocated with 'new'. 00063 /// 00064 void add(FunctionPass *P); 00065 00066 /// add - ImmutablePasses are not FunctionPasses, so we have a 00067 /// special hack to get them into a FunctionPassManager. 00068 /// 00069 void add(ImmutablePass *IP); 00070 00071 /// run - Execute all of the passes scheduled for execution. Keep 00072 /// track of whether any of the passes modifies the function, and if 00073 /// so, return true. 00074 /// 00075 bool run(Function &F); 00076 }; 00077 00078 } // End llvm namespace 00079 00080 #endif