LLVM  6.0.0svn
LTOBackend.h
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1 //===-LTOBackend.h - LLVM Link Time Optimizer Backend ---------------------===//
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 // This file implements the "backend" phase of LTO, i.e. it performs
11 // optimization and code generation on a loaded module. It is generally used
12 // internally by the LTO class but can also be used independently, for example
13 // to implement a standalone ThinLTO backend.
14 //
15 //===----------------------------------------------------------------------===//
16 
17 #ifndef LLVM_LTO_LTOBACKEND_H
18 #define LLVM_LTO_LTOBACKEND_H
19 
20 #include "llvm/ADT/MapVector.h"
21 #include "llvm/IR/DiagnosticInfo.h"
23 #include "llvm/LTO/LTO.h"
27 
28 namespace llvm {
29 
30 class BitcodeModule;
31 class Error;
32 class Module;
33 class Target;
34 
35 namespace lto {
36 
37 /// Runs a regular LTO backend. The regular LTO backend can also act as the
38 /// regular LTO phase of ThinLTO, which may need to access the combined index.
39 Error backend(Config &C, AddStreamFn AddStream,
40  unsigned ParallelCodeGenParallelismLevel,
41  std::unique_ptr<Module> M, ModuleSummaryIndex &CombinedIndex);
42 
43 /// Runs a ThinLTO backend.
44 Error thinBackend(Config &C, unsigned Task, AddStreamFn AddStream, Module &M,
45  const ModuleSummaryIndex &CombinedIndex,
46  const FunctionImporter::ImportMapTy &ImportList,
47  const GVSummaryMapTy &DefinedGlobals,
48  MapVector<StringRef, BitcodeModule> &ModuleMap);
49 }
50 }
51 
52 #endif
uint64_t CallInst * C
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
StringMap< FunctionsToImportTy > ImportMapTy
The map contains an entry for every module to import from, the key being the module identifier to pas...
std::function< std::unique_ptr< NativeObjectStream >unsigned Task)> AddStreamFn
This type defines the callback to add a native object that is generated on the fly.
Definition: LTO.h:175
DenseMap< GlobalValue::GUID, GlobalValueSummary * > GVSummaryMapTy
Map of global value GUID to its summary, used to identify values defined in a particular module...
Error thinBackend(Config &C, unsigned Task, AddStreamFn AddStream, Module &M, const ModuleSummaryIndex &CombinedIndex, const FunctionImporter::ImportMapTy &ImportList, const GVSummaryMapTy &DefinedGlobals, MapVector< StringRef, BitcodeModule > &ModuleMap)
Runs a ThinLTO backend.
Definition: LTOBackend.cpp:396
Error backend(Config &C, AddStreamFn AddStream, unsigned ParallelCodeGenParallelismLevel, std::unique_ptr< Module > M, ModuleSummaryIndex &CombinedIndex)
Runs a regular LTO backend.
Definition: LTOBackend.cpp:361
ModuleSummaryIndex.h This file contains the declarations the classes that hold the module index and s...