C++ list::empty方法代码示例

int main(int argc, const char **argv) {
  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);

  CommonOptionsParser OptionsParser(argc, argv, ClangQueryCategory);

  if (!Commands.empty() && !CommandFiles.empty()) {
    llvm::errs() << argv[0] << ": cannot specify both -c and -f\n";
    return 1;
  }

  ClangTool Tool(OptionsParser.getCompilations(),
                 OptionsParser.getSourcePathList());
  std::vector<std::unique_ptr<ASTUnit>> ASTs;
  if (Tool.buildASTs(ASTs) != 0)
    return 1;

  QuerySession QS(ASTs);

  if (!Commands.empty()) {
    for (cl::list<std::string>::iterator I = Commands.begin(),
                                         E = Commands.end();
         I != E; ++I) {
      QueryRef Q = QueryParser::parse(*I, QS);
      if (!Q->run(llvm::outs(), QS))
        return 1;
    }
  } else if (!CommandFiles.empty()) {
    for (cl::list<std::string>::iterator I = CommandFiles.begin(),
                                         E = CommandFiles.end();
         I != E; ++I) {
      std::ifstream Input(I->c_str());
      if (!Input.is_open()) {
        llvm::errs() << argv[0] << ": cannot open " << *I << "\n";
        return 1;
      }
      while (Input.good()) {
        std::string Line;
        std::getline(Input, Line);

        QueryRef Q = QueryParser::parse(Line, QS);
        if (!Q->run(llvm::outs(), QS))
          return 1;
      }
    }
  } else {
    LineEditor LE("clang-query");
    LE.setListCompleter([&QS](StringRef Line, size_t Pos) {
      return QueryParser::complete(Line, Pos, QS);
    });
    while (llvm::Optional<std::string> Line = LE.readLine()) {
      QueryRef Q = QueryParser::parse(*Line, QS);
      Q->run(llvm::outs(), QS);
      llvm::outs().flush();
      if (QS.Terminate)
        break;
    }
  }

  return 0;
}

int main(int argc, const char **argv) {
  llvm::sys::PrintStackTraceOnErrorSignal();
  cl::ParseCommandLineOptions(
      argc, argv,
      "A tool to format C/C++/Obj-C code.\n\n"
      "If no arguments are specified, it formats the code from standard input\n"
      "and writes the result to the standard output.\n"
      "If <file>s are given, it reformats the files. If -i is specified \n"
      "together with <file>s, the files are edited in-place. Otherwise, the \n"
      "result is written to the standard output.\n");

  if (Help)
    cl::PrintHelpMessage();

  bool Error = false;
  switch (FileNames.size()) {
  case 0:
    Error = clang::format::format("-");
    break;
  case 1:
    Error = clang::format::format(FileNames[0]);
    break;
  default:
    if (!Offsets.empty() || !Lengths.empty()) {
      llvm::errs() << "error: \"-offset\" and \"-length\" can only be used for "
                      "single file.\n";
      return 1;
    }
    for (unsigned i = 0; i < FileNames.size(); ++i)
      Error |= clang::format::format(FileNames[i]);
    break;
  }
  return Error ? 1 : 0;
}

    virtual bool
    runOnModule(Module& M)
    {
      AliasAnalysis& aa = this->getAnalysis<AliasAnalysis>();
      bool checked = false;

      errs() <<  "GatherInterfacePass::runOnModule: " << M.getModuleIdentifier() << "\n";
      
      if (!GatherInterfaceMain.empty()) {
        checked = true;
        for (cl::list<std::string>::const_iterator i = GatherInterfaceMain.begin(), e = GatherInterfaceMain.end();
            i != e; ++i) {
          Function* f = M.getFunction(*i);
          if (f == NULL) {
            errs() << "Function '" << *i << "' not found, skipping\n";
            continue;
          }
          if (f->isDeclaration()) {
            errs() << "Function '" << *i << "' is declaration, skipping\n";
            continue;
          }
          errs() << "Gathering from: " << *f << "\n";
          GatherInterface(*f, this->interface, &aa);
        }
      }
      if (!GatherInterfaceEntry.empty()) {
        checked = true;
        ComponentInterface ci;
        for (cl::list<std::string>::const_iterator i = GatherInterfaceEntry.begin(), e = GatherInterfaceEntry.end();
              i != e; ++i) {
          errs() << "Reading interface from '" << *i << "'...";
          if (ci.readFromFile(*i)) {
            errs() << "success\n";
          } else {
            errs() << "failed\n";
            continue;
          }
        }
        for (ComponentInterface::FunctionIterator i = ci.begin(), e = ci.end(); i != e; ++i) {
          Function* f = M.getFunction(i->first());
          if (f == NULL) continue;
          if (!GatherInterface(*f, this->interface, &aa)) break;
        }
      }
      if (!checked) {
        GatherInterface(M, this->interface, &aa);
      }

      if (GatherInterfaceOutput != "") {
        proto::ComponentInterface ci;
        codeInto<ComponentInterface, proto::ComponentInterface> (
            this->interface, ci);
        std::ofstream output(GatherInterfaceOutput.c_str(), std::ios::binary);
        assert(ci.SerializeToOstream(&output));
        output.close();
      }
      return false;
    }

int main(int argc, const char **argv) {
  llvm::sys::PrintStackTraceOnErrorSignal();

  // Hide unrelated options.
  StringMap<cl::Option*> Options;
  cl::getRegisteredOptions(Options);
  for (StringMap<cl::Option *>::iterator I = Options.begin(), E = Options.end();
       I != E; ++I) {
    if (I->second->Category != &ClangFormatCategory && I->first() != "help" &&
        I->first() != "version")
      I->second->setHiddenFlag(cl::ReallyHidden);
  }

  cl::SetVersionPrinter(PrintVersion);
  cl::ParseCommandLineOptions(
      argc, argv,
      "A tool to format C/C++/Obj-C code.\n\n"
      "If no arguments are specified, it formats the code from standard input\n"
      "and writes the result to the standard output.\n"
      "If <file>s are given, it reformats the files. If -i is specified\n"
      "together with <file>s, the files are edited in-place. Otherwise, the\n"
      "result is written to the standard output.\n");

  if (Help)
    cl::PrintHelpMessage();

  if (DumpConfig) {
    std::string Config =
        clang::format::configurationAsText(clang::format::getStyle(
            Style, FileNames.empty() ? AssumeFilename : FileNames[0],
            FallbackStyle));
    llvm::outs() << Config << "\n";
    return 0;
  }

  bool Error = false;
  switch (FileNames.size()) {
  case 0:
    Error = clang::format::format("-");
    break;
  case 1:
    Error = clang::format::format(FileNames[0]);
    break;
  default:
    if (!Offsets.empty() || !Lengths.empty() || !LineRanges.empty()) {
      llvm::errs() << "error: -offset, -length and -lines can only be used for "
                      "single file.\n";
      return 1;
    }
    for (unsigned i = 0; i < FileNames.size(); ++i)
      Error |= clang::format::format(FileNames[i]);
    break;
  }
  return Error ? 1 : 0;
}

//Check options of the decoder engine
void setOptions(){
    //Verify if directory is well formed
    OptionMng::setDirectory(&VTLDir);
    OptionMng::setDirectory(&OutputDir);
    OptionMng::setDirectory(&InputDir);

    //Set an optimization level
    if (OptLevelO1){
        optLevel = 1;
    }else if (OptLevelO2){
        optLevel = 2;
    }else if (OptLevelO3){
        optLevel = 3;
    }else{
        optLevel = 0;
    }

    //Set native variables
    string writer_file = OutputDir + "writer.txt";
    if (YuvFile != ""){
        yuv_file = (char*)YuvFile.c_str();
    }
    write_file = (char*)writer_file.c_str();

    if (nodisplay){
        display_flags = DISPLAY_DISABLE;
    } else {
        display_flags = DISPLAY_ENABLE;
    }

    if (!debexec.empty()){
        enableTrace = true;
    }

}

int main(int argc, char **argv) {
  cl::ParseCommandLineOptions(argc, argv);

  LLVMContext Context;
  
  // Load both modules.  Die if that fails.
  Module *LModule = ReadModule(Context, LeftFilename);
  Module *RModule = ReadModule(Context, RightFilename);
  if (!LModule || !RModule) return 1;

  DiffConsumer Consumer(LModule, RModule);
  DifferenceEngine Engine(Context, Consumer);

  // If any global names were given, just diff those.
  if (!GlobalsToCompare.empty()) {
    for (unsigned I = 0, E = GlobalsToCompare.size(); I != E; ++I)
      diffGlobal(Engine, LModule, RModule, GlobalsToCompare[I]);

  // Otherwise, diff everything in the module.
  } else {
    Engine.diff(LModule, RModule);
  }

  delete LModule;
  delete RModule;

  return Consumer.hadDifferences();
}

int main(int argc, char **argv) {
  InitLLVM X(argc, argv);

  llvm::sys::InitializeCOMRAII COM(llvm::sys::COMThreadingMode::MultiThreaded);

  cl::ParseCommandLineOptions(argc, argv, "llvm-symbolizer\n");
  LLVMSymbolizer::Options Opts(ClPrintFunctions, ClUseSymbolTable, ClDemangle,
                               ClUseRelativeAddress, ClDefaultArch);

  for (const auto &hint : ClDsymHint) {
    if (sys::path::extension(hint) == ".dSYM") {
      Opts.DsymHints.push_back(hint);
    } else {
      errs() << "Warning: invalid dSYM hint: \"" << hint <<
                "\" (must have the '.dSYM' extension).\n";
    }
  }
  LLVMSymbolizer Symbolizer(Opts);

  DIPrinter Printer(outs(), ClPrintFunctions != FunctionNameKind::None,
                    ClPrettyPrint, ClPrintSourceContextLines, ClVerbose);

  if (ClInputAddresses.empty()) {
    const int kMaxInputStringLength = 1024;
    char InputString[kMaxInputStringLength];

    while (fgets(InputString, sizeof(InputString), stdin))
      symbolizeInput(InputString, Symbolizer, Printer);
  } else {
    for (StringRef Address : ClInputAddresses)
      symbolizeInput(Address, Symbolizer, Printer);
  }

  return 0;
}

InternalizePass::InternalizePass(bool AllButMain)
  : ModulePass(ID), AllButMain(AllButMain){
  initializeInternalizePassPass(*PassRegistry::getPassRegistry());
  if (!APIFile.empty())           // If a filename is specified, use it.
    LoadFile(APIFile.c_str());
  if (!APIList.empty())           // If a list is specified, use it as well.
    ExternalNames.insert(APIList.begin(), APIList.end());
}

int main(int argc, char **argv) {
  InitLLVM X(argc, argv);

  cl::ParseCommandLineOptions(argc, argv, "llvm-undname\n");

  if (Symbols.empty()) {
    while (true) {
      std::string LineStr;
      std::getline(std::cin, LineStr);
      if (std::cin.eof())
        break;

      StringRef Line(LineStr);
      Line = Line.trim();
      if (Line.empty() || Line.startswith("#") || Line.startswith(";"))
        continue;

      // If the user is manually typing in these decorated names, don't echo
      // them to the terminal a second time.  If they're coming from redirected
      // input, however, then we should display the input line so that the
      // mangled and demangled name can be easily correlated in the output.
      if (!sys::Process::StandardInIsUserInput()) {
        outs() << Line << "\n";
        outs().flush();
      }
      demangle(Line);
      outs() << "\n";
    }
  } else {
    for (StringRef S : Symbols) {
      outs() << S << "\n";
      outs().flush();
      demangle(S);
      outs() << "\n";
    }
  }

  return 0;
}

bool optimize() {
    return optimizeLevel || doInline() || !passList.empty();
}

// I don't think there's a way to specify an initial value for cl::list,
// so if nothing was specified, add the default
static void AddCheckPrefixIfNeeded() {
  if (CheckPrefixes.empty())
    CheckPrefixes.push_back("CHECK");
}

//===----------------------------------------------------------------------===//
// main for opt
//
int main(int argc, char **argv) {
  sys::PrintStackTraceOnErrorSignal();
  llvm::PrettyStackTraceProgram X(argc, argv);

  // Enable debug stream buffering.
  EnableDebugBuffering = true;

  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
  LLVMContext &Context = getGlobalContext();

  InitializeAllTargets();
  InitializeAllTargetMCs();
  InitializeAllAsmPrinters();

  // Initialize passes
  PassRegistry &Registry = *PassRegistry::getPassRegistry();
  initializeCore(Registry);
  initializeDebugIRPass(Registry);
  initializeScalarOpts(Registry);
  initializeObjCARCOpts(Registry);
  initializeVectorization(Registry);
  initializeIPO(Registry);
  initializeAnalysis(Registry);
  initializeIPA(Registry);
  initializeTransformUtils(Registry);
  initializeInstCombine(Registry);
  initializeInstrumentation(Registry);
  initializeTarget(Registry);
  // For codegen passes, only passes that do IR to IR transformation are
  // supported.
  initializeCodeGenPreparePass(Registry);
  initializeAtomicExpandLoadLinkedPass(Registry);

#ifdef LINK_POLLY_INTO_TOOLS
  polly::initializePollyPasses(Registry);
#endif

  cl::ParseCommandLineOptions(argc, argv,
    "llvm .bc -> .bc modular optimizer and analysis printer\n");

  if (AnalyzeOnly && NoOutput) {
    errs() << argv[0] << ": analyze mode conflicts with no-output mode.\n";
    return 1;
  }

  SMDiagnostic Err;

  // Load the input module...
  std::unique_ptr<Module> M;
  M.reset(ParseIRFile(InputFilename, Err, Context));

  if (!M.get()) {
    Err.print(argv[0], errs());
    return 1;
  }

  // If we are supposed to override the target triple, do so now.
  if (!TargetTriple.empty())
    M->setTargetTriple(Triple::normalize(TargetTriple));

  // Figure out what stream we are supposed to write to...
  std::unique_ptr<tool_output_file> Out;
  if (NoOutput) {
    if (!OutputFilename.empty())
      errs() << "WARNING: The -o (output filename) option is ignored when\n"
                "the --disable-output option is used.\n";
  } else {
    // Default to standard output.
    if (OutputFilename.empty())
      OutputFilename = "-";

    std::string ErrorInfo;
    Out.reset(new tool_output_file(OutputFilename.c_str(), ErrorInfo,
                                   sys::fs::F_None));
    if (!ErrorInfo.empty()) {
      errs() << ErrorInfo << '\n';
      return 1;
    }
  }

  // If the output is set to be emitted to standard out, and standard out is a
  // console, print out a warning message and refuse to do it.  We don't
  // impress anyone by spewing tons of binary goo to a terminal.
  if (!Force && !NoOutput && !AnalyzeOnly && !OutputAssembly)
    if (CheckBitcodeOutputToConsole(Out->os(), !Quiet))
      NoOutput = true;

  if (PassPipeline.getNumOccurrences() > 0) {
    OutputKind OK = OK_NoOutput;
    if (!NoOutput)
      OK = OutputAssembly ? OK_OutputAssembly : OK_OutputBitcode;

    VerifierKind VK = VK_VerifyInAndOut;
    if (NoVerify)
      VK = VK_NoVerifier;
    else if (VerifyEach)
      VK = VK_VerifyEachPass;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    auto BBInfo = StrPair.split(':');
    // Get the function.
    Function *F = M->getFunction(BBInfo.first);
    if (!F) {
      errs() << argv[0] << ": program doesn't contain a function named '"
             << BBInfo.first << "'!\n";
      return 1;
    }
    // Do not materialize this function.
    GVs.insert(F);
    // Get the basic block.
    auto Res = llvm::find_if(*F, [&](const BasicBlock &BB) {
      return BB.getName().equals(BBInfo.second);
    });
    if (Res == F->end()) {
      errs() << argv[0] << ": function " << F->getName()
             << " doesn't contain a basic block named '" << BBInfo.second
             << "'!\n";
      return 1;
    }
    BBs.push_back(&*Res);
  }

  // Use *argv instead of argv[0] to work around a wrong GCC warning.
  ExitOnError ExitOnErr(std::string(*argv) + ": error reading input: ");

  if (Recursive) {
    std::vector<llvm::Function *> Workqueue;
    for (GlobalValue *GV : GVs) {
      if (auto *F = dyn_cast<Function>(GV)) {
        Workqueue.push_back(F);
      }
    }
    while (!Workqueue.empty()) {
      Function *F = &*Workqueue.back();
      Workqueue.pop_back();
      ExitOnErr(F->materialize());
      for (auto &BB : *F) {
        for (auto &I : BB) {
          auto *CI = dyn_cast<CallInst>(&I);
          if (!CI)
            continue;
          Function *CF = CI->getCalledFunction();
          if (!CF)
            continue;
          if (CF->isDeclaration() || GVs.count(CF))
            continue;
          GVs.insert(CF);
          Workqueue.push_back(CF);
        }
      }
    }
  }

  auto Materialize = [&](GlobalValue &GV) { ExitOnErr(GV.materialize()); };

  // Materialize requisite global values.
  if (!DeleteFn) {
    for (size_t i = 0, e = GVs.size(); i != e; ++i)
      Materialize(*GVs[i]);
  } else {
    // Deleting. Materialize every GV that's *not* in GVs.
    SmallPtrSet<GlobalValue *, 8> GVSet(GVs.begin(), GVs.end());
    for (auto &F : *M) {
      if (!GVSet.count(&F))
        Materialize(F);

int main(int argc, char **argv, char **envp) {
  // Print a stack trace if we signal out.
  sys::PrintStackTraceOnErrorSignal();
  PrettyStackTraceProgram X(argc, argv);

  LLVMContext &Context = getGlobalContext();
  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.

  // Initialize passes
  PassRegistry &Registry = *PassRegistry::getPassRegistry();
  initializeCore(Registry);
  initializeScalarOpts(Registry);
  initializeIPO(Registry);
  initializeAnalysis(Registry);
  initializeIPA(Registry);
  initializeTransformUtils(Registry);
  initializeInstCombine(Registry);
  initializeTarget(Registry);

  // Initial global variable above for convenience printing of program name.
  progname = sys::path::stem(argv[0]);

  // Parse the command line options
  cl::ParseCommandLineOptions(argc, argv, "llvm linker\n");

#if defined(_WIN32) || defined(__CYGWIN__)
  if (!LinkAsLibrary) {
    // Default to "a.exe" instead of "a.out".
    if (OutputFilename.getNumOccurrences() == 0)
      OutputFilename = "a.exe";

    // If there is no suffix add an "exe" one.
    if (sys::path::extension(OutputFilename).empty())
      OutputFilename.append(".exe");
  }
#endif

  // Generate the bitcode for the optimized module.
  // If -b wasn't specified, use the name specified
  // with -o to construct BitcodeOutputFilename.
  if (BitcodeOutputFilename.empty()) {
    BitcodeOutputFilename = OutputFilename;
    if (!LinkAsLibrary) BitcodeOutputFilename += ".bc";
  }

  // Arrange for the bitcode output file to be deleted on any errors.
  BitcodeOutputRemover.setFile(BitcodeOutputFilename);
  sys::RemoveFileOnSignal(sys::Path(BitcodeOutputFilename));

  // Arrange for the output file to be deleted on any errors.
  if (!LinkAsLibrary) {
    OutputRemover.setFile(OutputFilename);
    sys::RemoveFileOnSignal(sys::Path(OutputFilename));
  }

  // Construct a Linker (now that Verbose is set)
  Linker TheLinker(progname, OutputFilename, Context, Verbose);

  // Keep track of the native link items (versus the bitcode items)
  Linker::ItemList NativeLinkItems;

  // Add library paths to the linker
  TheLinker.addPaths(LibPaths);
  TheLinker.addSystemPaths();

  // Remove any consecutive duplicates of the same library...
  Libraries.erase(std::unique(Libraries.begin(), Libraries.end()),
                  Libraries.end());

  if (LinkAsLibrary) {
    std::vector<sys::Path> Files;
    for (unsigned i = 0; i < InputFilenames.size(); ++i )
      Files.push_back(sys::Path(InputFilenames[i]));
    if (TheLinker.LinkInFiles(Files))
      return 1; // Error already printed

    // The libraries aren't linked in but are noted as "dependent" in the
    // module.
    for (cl::list<std::string>::const_iterator I = Libraries.begin(),
         E = Libraries.end(); I != E ; ++I) {
      TheLinker.getModule()->addLibrary(*I);
    }
  } else {
    // Build a list of the items from our command line
    Linker::ItemList Items;
    BuildLinkItems(Items, InputFilenames, Libraries);

    // Link all the items together
    if (TheLinker.LinkInItems(Items, NativeLinkItems) )
      return 1; // Error already printed
  }

  std::auto_ptr<Module> Composite(TheLinker.releaseModule());

  // Optimize the module
  Optimize(Composite.get());

  // Generate the bitcode output.
  GenerateBitcode(Composite.get(), BitcodeOutputFilename);

//.........这里部分代码省略.........

// main - Entry point for the llc compiler.
//
int main(int argc, char **argv) {
  sys::PrintStackTraceOnErrorSignal();
  PrettyStackTraceProgram X(argc, argv);

  // Enable debug stream buffering.
  EnableDebugBuffering = true;

  LLVMContext &Context = getGlobalContext();
  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.

  // Initialize targets first, so that --version shows registered targets.
  InitializeAllTargets();
  InitializeAllTargetMCs();
  InitializeAllAsmPrinters();
  InitializeAllAsmParsers();

  // Initialize codegen and IR passes used by llc so that the -print-after,
  // -print-before, and -stop-after options work.
  PassRegistry *Registry = PassRegistry::getPassRegistry();
  initializeCore(*Registry);
  initializeCodeGen(*Registry);
  initializeLoopStrengthReducePass(*Registry);
  initializeLowerIntrinsicsPass(*Registry);
  initializeUnreachableBlockElimPass(*Registry);

  // Register the target printer for --version.
  cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);

  cl::ParseCommandLineOptions(argc, argv, "llvm system compiler\n");

  // Load the module to be compiled...
  SMDiagnostic Err;
  std::auto_ptr<Module> M;
  Module *mod = 0;
  Triple TheTriple;

  bool SkipModule = MCPU == "help" ||
                    (!MAttrs.empty() && MAttrs.front() == "help");

  // If user just wants to list available options, skip module loading
  if (!SkipModule) {
    M.reset(ParseIRFile(InputFilename, Err, Context));
    mod = M.get();
    if (mod == 0) {
      Err.print(argv[0], errs());
      return 1;
    }

    // If we are supposed to override the target triple, do so now.
    if (!TargetTriple.empty())
      mod->setTargetTriple(Triple::normalize(TargetTriple));
    TheTriple = Triple(mod->getTargetTriple());
  } else {
    TheTriple = Triple(Triple::normalize(TargetTriple));
  }

  if (TheTriple.getTriple().empty())
    TheTriple.setTriple(sys::getDefaultTargetTriple());

  // Get the target specific parser.
  std::string Error;
  const Target *TheTarget = TargetRegistry::lookupTarget(MArch, TheTriple,
                                                         Error);
  if (!TheTarget) {
    errs() << argv[0] << ": " << Error;
    return 1;
  }

  // Package up features to be passed to target/subtarget
  std::string FeaturesStr;
  if (MAttrs.size()) {
    SubtargetFeatures Features;
    for (unsigned i = 0; i != MAttrs.size(); ++i)
      Features.AddFeature(MAttrs[i]);
    FeaturesStr = Features.getString();
  }

  CodeGenOpt::Level OLvl = CodeGenOpt::Default;
  switch (OptLevel) {
  default:
    errs() << argv[0] << ": invalid optimization level.\n";
    return 1;
  case ' ': break;
  case '0': OLvl = CodeGenOpt::None; break;
  case '1': OLvl = CodeGenOpt::Less; break;
  case '2': OLvl = CodeGenOpt::Default; break;
  case '3': OLvl = CodeGenOpt::Aggressive; break;
  }

  TargetOptions Options;
  Options.LessPreciseFPMADOption = EnableFPMAD;
  Options.NoFramePointerElim = DisableFPElim;
  Options.NoFramePointerElimNonLeaf = DisableFPElimNonLeaf;
  Options.AllowFPOpFusion = FuseFPOps;
  Options.UnsafeFPMath = EnableUnsafeFPMath;
  Options.NoInfsFPMath = EnableNoInfsFPMath;
  Options.NoNaNsFPMath = EnableNoNaNsFPMath;
  Options.HonorSignDependentRoundingFPMathOption =
//.........这里部分代码省略.........