1 //===- llvm/Analysis/FindUsedTypes.h - Find all Types in use ----*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This pass is used to seek out all of the types in use by the program. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_ANALYSIS_FINDUSEDTYPES_H 15 #define LLVM_ANALYSIS_FINDUSEDTYPES_H 16 17 #include "llvm/ADT/SetVector.h" 18 #include "llvm/Pass.h" 19 20 namespace llvm { 21 22 class Type; 23 class Value; 24 25 class FindUsedTypes : public ModulePass { 26 SetVector<Type *> UsedTypes; 27 public: 28 static char ID; // Pass identification, replacement for typeid 29 FindUsedTypes() : ModulePass(ID) { 30 initializeFindUsedTypesPass(*PassRegistry::getPassRegistry()); 31 } 32 33 /// getTypes - After the pass has been run, return the set containing all of 34 /// the types used in the module. 35 /// 36 const SetVector<Type *> &getTypes() const { return UsedTypes; } 37 38 /// Print the types found in the module. If the optional Module parameter is 39 /// passed in, then the types are printed symbolically if possible, using the 40 /// symbol table from the module. 41 /// 42 void print(raw_ostream &o, const Module *M) const; 43 44 private: 45 /// IncorporateType - Incorporate one type and all of its subtypes into the 46 /// collection of used types. 47 /// 48 void IncorporateType(Type *Ty); 49 50 /// IncorporateValue - Incorporate all of the types used by this value. 51 /// 52 void IncorporateValue(const Value *V); 53 54 public: 55 /// run - This incorporates all types used by the specified module 56 bool runOnModule(Module &M); 57 58 /// getAnalysisUsage - We do not modify anything. 59 virtual void getAnalysisUsage(AnalysisUsage &AU) const { 60 AU.setPreservesAll(); 61 } 62 }; 63 64 } // End llvm namespace 65 66 #endif 67
