LLVM  6.0.0svn
BitcodeWriterPass.cpp
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1 //===- BitcodeWriterPass.cpp - Bitcode writing pass -----------------------===//
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 // BitcodeWriterPass implementation.
11 //
12 //===----------------------------------------------------------------------===//
13 
17 #include "llvm/IR/Module.h"
18 #include "llvm/IR/PassManager.h"
19 #include "llvm/Pass.h"
20 using namespace llvm;
21 
23  const ModuleSummaryIndex *Index =
24  EmitSummaryIndex ? &(AM.getResult<ModuleSummaryIndexAnalysis>(M))
25  : nullptr;
26  WriteBitcodeToFile(&M, OS, ShouldPreserveUseListOrder, Index, EmitModuleHash);
27  return PreservedAnalyses::all();
28 }
29 
30 namespace {
31  class WriteBitcodePass : public ModulePass {
32  raw_ostream &OS; // raw_ostream to print on
33  bool ShouldPreserveUseListOrder;
34  bool EmitSummaryIndex;
35  bool EmitModuleHash;
36 
37  public:
38  static char ID; // Pass identification, replacement for typeid
39  WriteBitcodePass() : ModulePass(ID), OS(dbgs()) {
41  }
42 
43  explicit WriteBitcodePass(raw_ostream &o, bool ShouldPreserveUseListOrder,
44  bool EmitSummaryIndex, bool EmitModuleHash)
45  : ModulePass(ID), OS(o),
46  ShouldPreserveUseListOrder(ShouldPreserveUseListOrder),
47  EmitSummaryIndex(EmitSummaryIndex), EmitModuleHash(EmitModuleHash) {
49  }
50 
51  StringRef getPassName() const override { return "Bitcode Writer"; }
52 
53  bool runOnModule(Module &M) override {
54  const ModuleSummaryIndex *Index =
55  EmitSummaryIndex
56  ? &(getAnalysis<ModuleSummaryIndexWrapperPass>().getIndex())
57  : nullptr;
58  WriteBitcodeToFile(&M, OS, ShouldPreserveUseListOrder, Index,
59  EmitModuleHash);
60  return false;
61  }
62  void getAnalysisUsage(AnalysisUsage &AU) const override {
63  AU.setPreservesAll();
64  if (EmitSummaryIndex)
66  }
67  };
68 }
69 
70 char WriteBitcodePass::ID = 0;
71 INITIALIZE_PASS_BEGIN(WriteBitcodePass, "write-bitcode", "Write Bitcode", false,
72  true)
74 INITIALIZE_PASS_END(WriteBitcodePass, "write-bitcode", "Write Bitcode", false,
75  true)
76 
78  bool ShouldPreserveUseListOrder,
79  bool EmitSummaryIndex, bool EmitModuleHash) {
80  return new WriteBitcodePass(Str, ShouldPreserveUseListOrder,
81  EmitSummaryIndex, EmitModuleHash);
82 }
static PassRegistry * getPassRegistry()
getPassRegistry - Access the global registry object, which is automatically initialized at applicatio...
PassT::Result & getResult(IRUnitT &IR, ExtraArgTs... ExtraArgs)
Get the result of an analysis pass for a given IR unit.
Definition: PassManager.h:687
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
A Module instance is used to store all the information related to an LLVM module. ...
Definition: Module.h:63
This is the interface to build a ModuleSummaryIndex for a module.
This file provides a bitcode writing pass.
Analysis pass to provide the ModuleSummaryIndex object.
INITIALIZE_PASS_BEGIN(WriteBitcodePass, "write-bitcode", "Write Bitcode", false, true) INITIALIZE_PASS_END(WriteBitcodePass
AnalysisUsage & addRequired()
#define INITIALIZE_PASS_DEPENDENCY(depName)
Definition: PassSupport.h:51
write bitcode
Class to hold module path string table and global value map, and encapsulate methods for operating on...
void WriteBitcodeToFile(const Module *M, raw_ostream &Out, bool ShouldPreserveUseListOrder=false, const ModuleSummaryIndex *Index=nullptr, bool GenerateHash=false, ModuleHash *ModHash=nullptr)
Write the specified module to the specified raw output stream.
void initializeWriteBitcodePassPass(PassRegistry &)
A set of analyses that are preserved following a run of a transformation pass.
Definition: PassManager.h:153
Represent the analysis usage information of a pass.
static void write(bool isBE, void *P, T V)
static PreservedAnalyses all()
Construct a special preserved set that preserves all passes.
Definition: PassManager.h:159
INITIALIZE_PASS_END(RegBankSelect, DEBUG_TYPE, "Assign register bank of generic virtual registers", false, false) RegBankSelect
write Write Bitcode
Module.h This file contains the declarations for the Module class.
raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
Definition: Debug.cpp:132
void setPreservesAll()
Set by analyses that do not transform their input at all.
Basic Alias true
ModulePass * createBitcodeWriterPass(raw_ostream &Str, bool ShouldPreserveUseListOrder=false, bool EmitSummaryIndex=false, bool EmitModuleHash=false)
Create and return a pass that writes the module to the specified ostream.
ModulePass class - This class is used to implement unstructured interprocedural optimizations and ana...
Definition: Pass.h:225
PreservedAnalyses run(Module &M, ModuleAnalysisManager &)
Run the bitcode writer pass, and output the module to the selected output stream. ...
This class implements an extremely fast bulk output stream that can only output to a stream...
Definition: raw_ostream.h:44
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:49
A container for analyses that lazily runs them and caches their results.
This header defines various interfaces for pass management in LLVM.
Legacy wrapper pass to provide the ModuleSummaryIndex object.