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//===- Linker.h - Module Linker Interface -----------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LINKER_LINKER_H
#define LLVM_LINKER_LINKER_H
#include "llvm/ADT/StringSet.h"
#include "llvm/Linker/IRMover.h"
namespace llvm {
class Module;
/// 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 {
IRMover Mover;
public:
enum Flags {
None = 0,
OverrideFromSrc = (1 << 0),
LinkOnlyNeeded = (1 << 1),
};
Linker(Module &M);
/// Link \p Src into the composite.
///
/// Passing OverrideSymbols as true will have symbols from Src
/// shadow those in the Dest.
///
/// Passing InternalizeCallback will have the linker call the function with
/// the new module and a list of global value names to be internalized by the
/// callback.
///
/// Returns true on error.
bool linkInModule(std::unique_ptr<Module> Src, unsigned Flags = Flags::None,
std::function<void(Module &, const StringSet<> &)>
InternalizeCallback = {});
static bool linkModules(Module &Dest, std::unique_ptr<Module> Src,
unsigned Flags = Flags::None,
std::function<void(Module &, const StringSet<> &)>
InternalizeCallback = {});
};
} // End llvm namespace
#endif
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