LLVM  9.0.0svn
Linker.h
Go to the documentation of this file.
1 //===- Linker.h - Module Linker Interface -----------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef LLVM_LINKER_LINKER_H
10 #define LLVM_LINKER_LINKER_H
11 
12 #include "llvm/ADT/StringSet.h"
13 #include "llvm/Linker/IRMover.h"
14 
15 namespace llvm {
16 class Module;
17 class StructType;
18 class Type;
19 
20 /// This class provides the core functionality of linking in LLVM. It keeps a
21 /// pointer to the merged module so far. It doesn't take ownership of the
22 /// module since it is assumed that the user of this class will want to do
23 /// something with it after the linking.
24 class Linker {
25  IRMover Mover;
26 
27 public:
28  enum Flags {
29  None = 0,
30  OverrideFromSrc = (1 << 0),
31  LinkOnlyNeeded = (1 << 1),
32  };
33 
34  Linker(Module &M);
35 
36  /// Link \p Src into the composite.
37  ///
38  /// Passing OverrideSymbols as true will have symbols from Src
39  /// shadow those in the Dest.
40  ///
41  /// Passing InternalizeCallback will have the linker call the function with
42  /// the new module and a list of global value names to be internalized by the
43  /// callback.
44  ///
45  /// Returns true on error.
46  bool linkInModule(std::unique_ptr<Module> Src, unsigned Flags = Flags::None,
47  std::function<void(Module &, const StringSet<> &)>
48  InternalizeCallback = {});
49 
50  static bool linkModules(Module &Dest, std::unique_ptr<Module> Src,
51  unsigned Flags = Flags::None,
52  std::function<void(Module &, const StringSet<> &)>
53  InternalizeCallback = {});
54 };
55 
56 } // End llvm namespace
57 
58 #endif
Type
MessagePack types as defined in the standard, with the exception of Integer being divided into a sign...
Definition: MsgPackReader.h:48
This class represents lattice values for constants.
Definition: AllocatorList.h:23
A Module instance is used to store all the information related to an LLVM module. ...
Definition: Module.h:65
Linker(Module &M)
static bool linkModules(Module &Dest, std::unique_ptr< Module > Src, unsigned Flags=Flags::None, std::function< void(Module &, const StringSet<> &)> InternalizeCallback={})
This function links two modules together, with the resulting Dest module modified to be the composite...
This class provides the core functionality of linking in LLVM.
Definition: Linker.h:24
bool linkInModule(std::unique_ptr< Module > Src, unsigned Flags=Flags::None, std::function< void(Module &, const StringSet<> &)> InternalizeCallback={})
Link Src into the composite.
StringSet - A wrapper for StringMap that provides set-like functionality.
Definition: StringSet.h:27
print Print MemDeps of function