1 //===- llvm/Analysis/FindUsedTypes.h - Find all Types in use -----*- C++ -*--=//
3 // This pass is used to seek out all of the types in use by the program.
5 //===----------------------------------------------------------------------===//
7 #ifndef LLVM_ANALYSIS_FINDUSEDTYPES_H
8 #define LLVM_ANALYSIS_FINDUSEDTYPES_H
10 #include "llvm/Pass.h"
14 class FindUsedTypes : public Pass {
15 std::set<const Type *> UsedTypes;
17 bool IncludeSymbolTables;
20 // FindUsedTypes ctor - This pass can optionally include types that are
21 // referenced only in symbol tables, but the default is not to.
23 FindUsedTypes(bool IST = false) : IncludeSymbolTables(IST) {}
25 // getTypes - After the pass has been run, return the set containing all of
26 // the types used in the module.
28 inline const std::set<const Type *> &getTypes() const { return UsedTypes; }
30 // Print the types found in the module. If the optional Module parameter is
31 // passed in, then the types are printed symbolically if possible, using the
32 // symbol table from the module.
34 void printTypes(std::ostream &o, const Module *M = 0) const;
37 // IncorporateType - Incorporate one type and all of its subtypes into the
38 // collection of used types.
40 void IncorporateType(const Type *Ty);
42 // IncorporateSymbolTable - Add all types referenced by the specified symtab
43 // into the collection of used types.
45 void IncorporateSymbolTable(const SymbolTable *ST);
48 // doPassInitialization - This loops over global constants defined in the
49 // module, converting them to their new type.
51 bool doPassInitialization(Module *M);
53 // doPerMethodWork - This incorporates all types used by the specified method
55 bool doPerMethodWork(Method *M);