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New pass to figure out what types are in use by a program

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1231 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2001-11-09 05:27:10 +00:00
parent 04aec9fbb4
commit f26e28711b
1 changed files with 58 additions and 0 deletions
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include/llvm/Analysis/FindUsedTypes.h Normal file
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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 FindUsedTypes : public Pass {
set<const Type *> UsedTypes;
bool IncludeSymbolTables;
public:
// FindUsedTypes ctor - This pass can optionally include types that are
// referenced only in symbol tables, but the default is not to.
//
FindUsedTypes(bool IST = false) : IncludeSymbolTables(IST) {}
// getTypes - After the pass has been run, return the set containing all of
// the types used in the module.
//
inline const 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 printTypes(ostream &o, const Module *M = 0) const;
private:
// IncorporateType - Incorporate one type and all of its subtypes into the
// collection of used types.
//
void IncorporateType(const Type *Ty);
// IncorporateSymbolTable - Add all types referenced by the specified symtab
// into the collection of used types.
//
void IncorporateSymbolTable(const SymbolTable *ST);
protected:
// doPassInitialization - This loops over global constants defined in the
// module, converting them to their new type.
//
bool doPassInitialization(Module *M);
// doPerMethodWork - This incorporates all types used by the specified method
//
bool doPerMethodWork(Method *M);
};
#endif