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//===- llvm/Analysis/FindUsedTypes.h - Find all Types in use -----*- C++ -*--=//
//
// This pass is used to seek out all of the types in use by the program.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ANALYSIS_FINDUSEDTYPES_H
#define LLVM_ANALYSIS_FINDUSEDTYPES_H
#include "llvm/Pass.h"
#include <set>
class SymbolTable;
class Type;
class FindUsedTypes : public Pass {
std::set<const Type *> UsedTypes;
public:
// FindUsedTypes ctor - This pass can optionally include types that are
// referenced only in symbol tables, but the default is not to.
//
static AnalysisID ID;
// getTypes - After the pass has been run, return the set containing all of
// the types used in the module.
//
const std::set<const Type *> &getTypes() const { return UsedTypes; }
// Print the types found in the module. If the optional Module parameter is
// passed in, then the types are printed symbolically if possible, using the
// symbol table from the module.
//
void print(std::ostream &o, const Module *M) const;
private:
// IncorporateType - Incorporate one type and all of its subtypes into the
// collection of used types.
//
void IncorporateType(const Type *Ty);
public:
// run - This incorporates all types used by the specified module
//
bool run(Module &M);
// getAnalysisUsage - Of course, we provide ourself...
//
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
}
};
#endif
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