FunctionImport.h revision 292915 
1//===- llvm/Transforms/IPO/FunctionImport.h - ThinLTO importing -*- C++ -*-===//
2//
3//                      The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef LLVM_FUNCTIONIMPORT_H
11#define LLVM_FUNCTIONIMPORT_H
12
13#include "llvm/ADT/StringMap.h"
14#include <functional>
15
16namespace llvm {
17class LLVMContext;
18class Module;
19class FunctionInfoIndex;
20
21/// The function importer is automatically importing function from other modules
22/// based on the provided summary informations.
23class FunctionImporter {
24
25  /// The summaries index used to trigger importing.
26  const FunctionInfoIndex &Index;
27
28  /// Factory function to load a Module for a given identifier
29  std::function<std::unique_ptr<Module>(StringRef Identifier)> ModuleLoader;
30
31public:
32  /// Create a Function Importer.
33  FunctionImporter(
34      const FunctionInfoIndex &Index,
35      std::function<std::unique_ptr<Module>(StringRef Identifier)> ModuleLoader)
36      : Index(Index), ModuleLoader(ModuleLoader) {}
37
38  /// Import functions in Module \p M based on the summary informations.
39  bool importFunctions(Module &M);
40};
41}
42
43#endif // LLVM_FUNCTIONIMPORT_H
44