LLVM API Documentation
00001 //===- llvm/Analysis/FindUsedTypes.h - Find all Types in use ----*- 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 pass is used to seek out all of the types in use by the program. 00011 // 00012 //===----------------------------------------------------------------------===// 00013 00014 #ifndef LLVM_ANALYSIS_FINDUSEDTYPES_H 00015 #define LLVM_ANALYSIS_FINDUSEDTYPES_H 00016 00017 #include "llvm/Pass.h" 00018 #include <set> 00019 00020 namespace llvm { 00021 00022 class Type; 00023 00024 class FindUsedTypes : public ModulePass { 00025 std::set<const Type *> UsedTypes; 00026 public: 00027 /// getTypes - After the pass has been run, return the set containing all of 00028 /// the types used in the module. 00029 /// 00030 const std::set<const Type *> &getTypes() const { return UsedTypes; } 00031 00032 /// Print the types found in the module. If the optional Module parameter is 00033 /// passed in, then the types are printed symbolically if possible, using the 00034 /// symbol table from the module. 00035 /// 00036 void print(std::ostream &o, const Module *M) const; 00037 00038 private: 00039 /// IncorporateType - Incorporate one type and all of its subtypes into the 00040 /// collection of used types. 00041 /// 00042 void IncorporateType(const Type *Ty); 00043 00044 /// IncorporateValue - Incorporate all of the types used by this value. 00045 /// 00046 void IncorporateValue(const Value *V); 00047 00048 public: 00049 /// run - This incorporates all types used by the specified module 00050 bool runOnModule(Module &M); 00051 00052 /// getAnalysisUsage - We do not modify anything. 00053 virtual void getAnalysisUsage(AnalysisUsage &AU) const { 00054 AU.setPreservesAll(); 00055 } 00056 00057 // stub - dummy function, just ignore it 00058 static void stub(); 00059 }; 00060 00061 // Make sure that any clients of this file link in PostDominators.cpp 00062 static IncludeFile 00063 FIND_USED_TYPES_INCLUDE_FILE((void*)&FindUsedTypes::stub); 00064 00065 } // End llvm namespace 00066 00067 #endif