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//===- Linker.h - Module Linker Interface -----------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LINKER_LINKER_H
#define LLVM_LINKER_LINKER_H
#include "llvm/ADT/SmallPtrSet.h"
#include <string>
namespace llvm {
class Comdat;
class GlobalValue;
class Module;
class StringRef;
class StructType;
/// This class provides the core functionality of linking in LLVM. It keeps a
/// pointer to the merged module so far. It doesn't take ownership of the
/// module since it is assumed that the user of this class will want to do
/// something with it after the linking.
class Linker {
public:
enum LinkerMode {
DestroySource = 0, // Allow source module to be destroyed.
PreserveSource = 1 // Preserve the source module.
};
Linker(Module *M, bool SuppressWarnings=false);
~Linker();
Module *getModule() const { return Composite; }
void deleteModule();
/// \brief Link \p Src into the composite. The source is destroyed if
/// \p Mode is DestroySource and preserved if it is PreserveSource.
/// If \p ErrorMsg is not null, information about any error is written
/// to it.
/// Returns true on error.
bool linkInModule(Module *Src, unsigned Mode, std::string *ErrorMsg);
bool linkInModule(Module *Src, std::string *ErrorMsg) {
return linkInModule(Src, Linker::DestroySource, ErrorMsg);
}
static bool LinkModules(Module *Dest, Module *Src, unsigned Mode,
std::string *ErrorMsg);
private:
Module *Composite;
SmallPtrSet<StructType*, 32> IdentifiedStructTypes;
bool SuppressWarnings;
};
} // End llvm namespace
#endif
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