C++ iterator::addFnAttr方法代码示例

bool MipsOs16::runOnModule(Module &M) {
  DEBUG(errs() << "Run on Module MipsOs16\n");
  bool modified = false;
  for (Module::iterator F = M.begin(), E = M.end(); F != E; ++F) {
    if (F->isDeclaration()) continue;
    DEBUG(dbgs() << "Working on " << F->getName() << "\n");
    if (needsFP(*F)) {
      DEBUG(dbgs() << " need to compile as nomips16 \n");
      F->addFnAttr("nomips16");
    }
    else {
      F->addFnAttr("mips16");
      DEBUG(dbgs() << " no need to compile as nomips16 \n");
    }
  }
  return modified;
}

bool AddAlwaysInlineAttributePass::runOnModule(Module &M) {
	bool modified = false;
    for (Module::iterator funcIt = M.begin(); funcIt != M.end(); ++funcIt) {
    	if (std::find(targetFunctions.begin(), targetFunctions.end(), funcIt->getName()) != targetFunctions.end()) {
        	funcIt->addFnAttr(Attribute::AlwaysInline);
        	modified = true;
        }
    }
    return modified;
}

bool MipsOs16::runOnModule(Module &M) {
  bool usingMask = Mips32FunctionMask.length() > 0;
  bool doneUsingMask = false; // this will make it stop repeating
  DEBUG(dbgs() << "Run on Module MipsOs16 \n" << Mips32FunctionMask << "\n");
  if (usingMask)
    DEBUG(dbgs() << "using mask \n" << Mips32FunctionMask << "\n");
  unsigned int functionIndex = 0;
  bool modified = false;
  for (Module::iterator F = M.begin(), E = M.end(); F != E; ++F) {
    if (F->isDeclaration()) continue;
    DEBUG(dbgs() << "Working on " << F->getName() << "\n");
    if (usingMask) {
      if (!doneUsingMask) {
        if (functionIndex == Mips32FunctionMask.length())
          functionIndex = 0;
        switch (Mips32FunctionMask[functionIndex]) {
        case '1':
          DEBUG(dbgs() << "mask forced mips32: " << F->getName() << "\n");
          F->addFnAttr("nomips16");
          break;
        case '.':
          doneUsingMask = true;
          break;
        default:
          break;
        }
        functionIndex++;
      }
    }
    else {
      if (needsFP(*F)) {
        DEBUG(dbgs() << "os16 forced mips32: " << F->getName() << "\n");
        F->addFnAttr("nomips16");
      }
      else {
        DEBUG(dbgs() << "os16 forced mips16: " << F->getName() << "\n");
        F->addFnAttr("mips16");
      }
    }
  }
  return modified;
}

  std::vector<Function*> functions(Module &M) {
    std::vector<Function*> functions;

    for (Module::iterator F = M.begin(); F != M.end(); ++F) {

      if (!F->isDeclaration()) {
        F->addFnAttr("kernel");
      }
      functions.push_back(F);
    }
    
    return functions;
  }

//.........这里部分代码省略.........
  TargetMachine &Target = *target.get();

  // Figure out where we are going to send the output...
  formatted_raw_ostream *Out = GetOutputStream(TheTarget->getName(), argv[0]);
  if (Out == 0) return 1;

  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;
  }

  // Request that addPassesToEmitFile run the Verifier after running
  // passes which modify the IR.
#ifndef NDEBUG
  bool DisableVerify = false;
#else
  bool DisableVerify = true;
#endif

  // If this target requires addPassesToEmitWholeFile, do it now.  This is
  // used by strange things like the C backend.
  if (Target.WantsWholeFile()) {
    PassManager PM;

    // Add the target data from the target machine, if it exists, or the module.
    if (const TargetData *TD = Target.getTargetData())
      PM.add(new TargetData(*TD));
    else
      PM.add(new TargetData(&mod));

    if (!NoVerify)
      PM.add(createVerifierPass());

    // Ask the target to add backend passes as necessary.
    if (Target.addPassesToEmitWholeFile(PM, *Out, FileType, OLvl,
                                        DisableVerify)) {
      errs() << argv[0] << ": target does not support generation of this"
             << " file type!\n";
      if (Out != &fouts()) delete Out;
      // And the Out file is empty and useless, so remove it now.
      sys::Path(OutputFilename).eraseFromDisk();
      return 1;
    }
    PM.run(mod);
  } else {
    // Build up all of the passes that we want to do to the module.
    FunctionPassManager Passes(M.get());

    // Add the target data from the target machine, if it exists, or the module.
    if (const TargetData *TD = Target.getTargetData())
      Passes.add(new TargetData(*TD));
    else
      Passes.add(new TargetData(&mod));

#ifndef NDEBUG
    if (!NoVerify)
      Passes.add(createVerifierPass());
#endif

    // Override default to generate verbose assembly.
    Target.setAsmVerbosityDefault(true);

    if (Target.addPassesToEmitFile(Passes, *Out, FileType, OLvl,
                                   DisableVerify)) {
      errs() << argv[0] << ": target does not support generation of this"
             << " file type!\n";
      if (Out != &fouts()) delete Out;
      // And the Out file is empty and useless, so remove it now.
      sys::Path(OutputFilename).eraseFromDisk();
      return 1;
    }

    Passes.doInitialization();

    // Run our queue of passes all at once now, efficiently.
    // TODO: this could lazily stream functions out of the module.
    for (Module::iterator I = mod.begin(), E = mod.end(); I != E; ++I)
      if (!I->isDeclaration()) {
        if (DisableRedZone)
          I->addFnAttr(Attribute::NoRedZone);
        if (NoImplicitFloats)
          I->addFnAttr(Attribute::NoImplicitFloat);
        Passes.run(*I);
      }

    Passes.doFinalization();
  }

  // Delete the ostream if it's not a stdout stream
  if (Out != &fouts()) delete Out;

  return 0;
}