示例#1
0
static TargetLibraryInfo *createTLI(llvm::Triple &TargetTriple,
                                    const CodeGenOptions &CodeGenOpts) {
    TargetLibraryInfo *TLI = new TargetLibraryInfo(TargetTriple);
    if (!CodeGenOpts.SimplifyLibCalls)
        TLI->disableAllFunctions();
    return TLI;
}
示例#2
0
void Optimize(llvm::Module *M, int OptLevel, int SizeLevel, int Verify) {

    // Create a PassManager to hold and optimize the collection of passes we are
    // about to build.
    //
    PassManager Passes;

    // Add an appropriate TargetLibraryInfo pass for the module's triple.
    TargetLibraryInfo *TLI = new TargetLibraryInfo(Triple(M->getTargetTriple()));

    // The -disable-simplify-libcalls flag actually disables all builtin optzns.
    if (DisableSimplifyLibCalls)
      TLI->disableAllFunctions();
    Passes.add(TLI);

    // Add an appropriate DataLayout instance for this module.
    const DataLayout *DL = M->getDataLayout();
    if (DL)
      Passes.add(new DataLayoutPass());

    Triple ModuleTriple(M->getTargetTriple());
    TargetMachine *Machine = nullptr;
    if (ModuleTriple.getArch())
      Machine = GetTargetMachine(Triple(ModuleTriple), OptLevel);
    std::unique_ptr<TargetMachine> TM(Machine);

    // Add internal analysis passes from the target machine.
    if (TM.get())
      TM->addAnalysisPasses(Passes);

    std::unique_ptr<FunctionPassManager> FPasses;
    if (OptLevel > 0 || SizeLevel > 0) {
      FPasses.reset(new FunctionPassManager(M));
      if (DL)
        FPasses->add(new DataLayoutPass());
      if (TM.get())
        TM->addAnalysisPasses(*FPasses);

    }

    AddOptimizationPasses(Passes, *FPasses, OptLevel, SizeLevel);

    if (OptLevel > 0 || SizeLevel > 0) {
      FPasses->doInitialization();
      for (Module::iterator F = M->begin(), E = M->end(); F != E; ++F)
        FPasses->run(*F);
      FPasses->doFinalization();
    }

    // Check that the module is well formed on completion of optimization
    if (Verify) {
      Passes.add(createVerifierPass());
      Passes.add(createDebugInfoVerifierPass());
    }

    // Now that we have all of the passes ready, run them.
    Passes.run(*M);
}
示例#3
0
  bool llvmToGen(ir::Unit &unit, const char *fileName, int optLevel)
  {
    // Get the global LLVM context
    llvm::LLVMContext& c = llvm::getGlobalContext();
    std::string errInfo;
    std::unique_ptr<llvm::raw_fd_ostream> o = NULL;
    if (OCL_OUTPUT_LLVM_BEFORE_EXTRA_PASS || OCL_OUTPUT_LLVM)
      o = std::unique_ptr<llvm::raw_fd_ostream>(new llvm::raw_fd_ostream(fileno(stdout), false));

    // Get the module from its file
    llvm::SMDiagnostic Err;
    std::auto_ptr<Module> M;
    M.reset(ParseIRFile(fileName, Err, c));
    if (M.get() == 0) return false;
    Module &mod = *M.get();

    Triple TargetTriple(mod.getTargetTriple());
    TargetLibraryInfo *libraryInfo = new TargetLibraryInfo(TargetTriple);
    libraryInfo->disableAllFunctions();

    runFuntionPass(mod, libraryInfo);
    runModulePass(mod, libraryInfo, optLevel);

    llvm::PassManager passes;

    // Print the code before further optimizations
    if (OCL_OUTPUT_LLVM_BEFORE_EXTRA_PASS)
#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 5
      passes.add(createPrintModulePass(*o));
#else
      passes.add(createPrintModulePass(&*o));
#endif
    passes.add(createIntrinsicLoweringPass());
    passes.add(createFunctionInliningPass(200000));
    passes.add(createScalarReplAggregatesPass()); // Break up allocas
    passes.add(createRemoveGEPPass(unit));
    passes.add(createConstantPropagationPass());
    passes.add(createLowerSwitchPass());
    passes.add(createPromoteMemoryToRegisterPass());
    passes.add(createGVNPass());                  // Remove redundancies
    passes.add(createScalarizePass());        // Expand all vector ops
    passes.add(createDeadInstEliminationPass());  // Remove simplified instructions
    passes.add(createGenPass(unit));

    // Print the code extra optimization passes
    if (OCL_OUTPUT_LLVM)
#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 5
      passes.add(createPrintModulePass(*o));
#else
      passes.add(createPrintModulePass(&*o));
#endif
    passes.run(mod);

    return true;
  }
示例#4
0
// Unfortunately, the LLVM C API doesn't provide a way to create the
// TargetLibraryInfo pass, so we use this method to do so.
extern "C" void
LLVMRustAddLibraryInfo(LLVMPassManagerRef PMB,
                       LLVMModuleRef M,
                       bool DisableSimplifyLibCalls) {
    Triple TargetTriple(unwrap(M)->getTargetTriple());
#if LLVM_VERSION_MINOR >= 7
    TargetLibraryInfoImpl TLII(TargetTriple);
    if (DisableSimplifyLibCalls)
      TLII.disableAllFunctions();
    unwrap(PMB)->add(new TargetLibraryInfoWrapperPass(TLII));
#else
    TargetLibraryInfo *TLI = new TargetLibraryInfo(TargetTriple);
    if (DisableSimplifyLibCalls)
      TLI->disableAllFunctions();
    unwrap(PMB)->add(TLI);
#endif
}
示例#5
0
bool EmitAssemblyHelper::AddEmitPasses(BackendAction Action,
                                       formatted_raw_ostream &OS,
                                       TargetMachine *TM) {

  // Create the code generator passes.
  PassManager *PM = getCodeGenPasses(TM);

  // Add LibraryInfo.
  llvm::Triple TargetTriple(TheModule->getTargetTriple());
  TargetLibraryInfo *TLI = new TargetLibraryInfo(TargetTriple);
  if (!CodeGenOpts.SimplifyLibCalls)
    TLI->disableAllFunctions();
  PM->add(TLI);

  // Add TargetTransformInfo.
  PM->add(new TargetTransformInfo(TM->getScalarTargetTransformInfo(),
                                  TM->getVectorTargetTransformInfo()));

  // Normal mode, emit a .s or .o file by running the code generator. Note,
  // this also adds codegenerator level optimization passes.
  TargetMachine::CodeGenFileType CGFT = TargetMachine::CGFT_AssemblyFile;
  if (Action == Backend_EmitObj)
    CGFT = TargetMachine::CGFT_ObjectFile;
  else if (Action == Backend_EmitMCNull)
    CGFT = TargetMachine::CGFT_Null;
  else
    assert(Action == Backend_EmitAssembly && "Invalid action!");

  // Add ObjC ARC final-cleanup optimizations. This is done as part of the
  // "codegen" passes so that it isn't run multiple times when there is
  // inlining happening.
  if (LangOpts.ObjCAutoRefCount &&
      CodeGenOpts.OptimizationLevel > 0)
    PM->add(createObjCARCContractPass());

  if (TM->addPassesToEmitFile(*PM, OS, CGFT,
                              /*DisableVerify=*/!CodeGenOpts.VerifyModule)) {
    Diags.Report(diag::err_fe_unable_to_interface_with_target);
    return false;
  }

  return true;
}
示例#6
0
//===----------------------------------------------------------------------===//
// 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();

  // Initialize passes
  PassRegistry &Registry = *PassRegistry::getPassRegistry();
  initializeCore(Registry);
  initializeScalarOpts(Registry);
  initializeObjCARCOpts(Registry);
  initializeVectorization(Registry);
  initializeIPO(Registry);
  initializeAnalysis(Registry);
  initializeIPA(Registry);
  initializeTransformUtils(Registry);
  initializeInstCombine(Registry);
  initializeInstrumentation(Registry);
  initializeTarget(Registry);
  // @LOCALMOD-BEGIN
  initializeAddPNaClExternalDeclsPass(Registry);
  initializeCanonicalizeMemIntrinsicsPass(Registry);
  initializeExpandArithWithOverflowPass(Registry);
  initializeExpandByValPass(Registry);
  initializeExpandConstantExprPass(Registry);
  initializeExpandCtorsPass(Registry);
  initializeExpandGetElementPtrPass(Registry);
  initializeExpandSmallArgumentsPass(Registry);
  initializeExpandStructRegsPass(Registry);
  initializeExpandTlsConstantExprPass(Registry);
  initializeExpandTlsPass(Registry);
  initializeExpandVarArgsPass(Registry);
  initializeFlattenGlobalsPass(Registry);
  initializeGlobalCleanupPass(Registry);
  initializeInsertDivideCheckPass(Registry);
  initializePNaClABIVerifyFunctionsPass(Registry);
  initializePNaClABIVerifyModulePass(Registry);
  initializePNaClSjLjEHPass(Registry);
  initializePromoteI1OpsPass(Registry);
  initializePromoteIntegersPass(Registry);
  initializeRemoveAsmMemoryPass(Registry);
  initializeReplacePtrsWithIntsPass(Registry);
  initializeResolveAliasesPass(Registry);
  initializeResolvePNaClIntrinsicsPass(Registry);
  initializeRewriteAtomicsPass(Registry);
  initializeRewriteLLVMIntrinsicsPass(Registry);
  initializeRewritePNaClLibraryCallsPass(Registry);
  initializeStripAttributesPass(Registry);
  initializeStripMetadataPass(Registry);
  initializeExpandI64Pass(Registry);
  // @LOCALMOD-END

  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...
  OwningPtr<Module> M;
  M.reset(ParseIRFile(InputFilename, Err, Context));

  if (M.get() == 0) {
    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...
  OwningPtr<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,
                                   raw_fd_ostream::F_Binary));
    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;

  // Create a PassManager to hold and optimize the collection of passes we are
  // about to build.
  //
  PassManager Passes;

  // Add an appropriate TargetLibraryInfo pass for the module's triple.
  TargetLibraryInfo *TLI = new TargetLibraryInfo(Triple(M->getTargetTriple()));

  // The -disable-simplify-libcalls flag actually disables all builtin optzns.
  if (DisableSimplifyLibCalls)
    TLI->disableAllFunctions();
  Passes.add(TLI);

  // Add an appropriate DataLayout instance for this module.
  DataLayout *TD = 0;
  const std::string &ModuleDataLayout = M.get()->getDataLayout();
  if (!ModuleDataLayout.empty())
    TD = new DataLayout(ModuleDataLayout);
  else if (!DefaultDataLayout.empty())
    TD = new DataLayout(DefaultDataLayout);

  if (TD)
    Passes.add(TD);

  Triple ModuleTriple(M->getTargetTriple());
  TargetMachine *Machine = 0;
  if (ModuleTriple.getArch())
    Machine = GetTargetMachine(Triple(ModuleTriple));
  OwningPtr<TargetMachine> TM(Machine);

  // Add internal analysis passes from the target machine.
  if (TM.get())
    TM->addAnalysisPasses(Passes);

  OwningPtr<FunctionPassManager> FPasses;
  if (OptLevelO1 || OptLevelO2 || OptLevelOs || OptLevelOz || OptLevelO3) {
    FPasses.reset(new FunctionPassManager(M.get()));
    if (TD)
      FPasses->add(new DataLayout(*TD));
  }

  if (PrintBreakpoints) {
    // Default to standard output.
    if (!Out) {
      if (OutputFilename.empty())
        OutputFilename = "-";

      std::string ErrorInfo;
      Out.reset(new tool_output_file(OutputFilename.c_str(), ErrorInfo,
                                     raw_fd_ostream::F_Binary));
      if (!ErrorInfo.empty()) {
        errs() << ErrorInfo << '\n';
        return 1;
      }
    }
    Passes.add(new BreakpointPrinter(Out->os()));
    NoOutput = true;
  }

  // If the -strip-debug command line option was specified, add it.  If
  // -std-compile-opts was also specified, it will handle StripDebug.
  if (StripDebug && !StandardCompileOpts)
    addPass(Passes, createStripSymbolsPass(true));

  // Create a new optimization pass for each one specified on the command line
  for (unsigned i = 0; i < PassList.size(); ++i) {
    // Check to see if -std-compile-opts was specified before this option.  If
    // so, handle it.
    if (StandardCompileOpts &&
        StandardCompileOpts.getPosition() < PassList.getPosition(i)) {
      AddStandardCompilePasses(Passes);
      StandardCompileOpts = false;
    }

    if (StandardLinkOpts &&
        StandardLinkOpts.getPosition() < PassList.getPosition(i)) {
      AddStandardLinkPasses(Passes);
      StandardLinkOpts = false;
    }

    if (OptLevelO1 && OptLevelO1.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 1, 0);
      OptLevelO1 = false;
    }

    if (OptLevelO2 && OptLevelO2.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 2, 0);
      OptLevelO2 = false;
    }

    if (OptLevelOs && OptLevelOs.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 2, 1);
      OptLevelOs = false;
    }

    if (OptLevelOz && OptLevelOz.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 2, 2);
      OptLevelOz = false;
    }

    if (OptLevelO3 && OptLevelO3.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 3, 0);
      OptLevelO3 = false;
    }

    // @LOCALMOD-BEGIN
    if (PNaClABISimplifyPreOpt &&
        PNaClABISimplifyPreOpt.getPosition() < PassList.getPosition(i)) {
      PNaClABISimplifyAddPreOptPasses(Passes);
      PNaClABISimplifyPreOpt = false;
    }

    if (PNaClABISimplifyPostOpt &&
        PNaClABISimplifyPostOpt.getPosition() < PassList.getPosition(i)) {
      PNaClABISimplifyAddPostOptPasses(Passes);
      PNaClABISimplifyPostOpt = false;
    }
    // @LOCALMOD-END

    const PassInfo *PassInf = PassList[i];
    Pass *P = 0;
    if (PassInf->getNormalCtor())
      P = PassInf->getNormalCtor()();
    else
      errs() << argv[0] << ": cannot create pass: "******"\n";
    if (P) {
      PassKind Kind = P->getPassKind();
      addPass(Passes, P);

      if (AnalyzeOnly) {
        switch (Kind) {
        case PT_BasicBlock:
          Passes.add(new BasicBlockPassPrinter(PassInf, Out->os()));
          break;
        case PT_Region:
          Passes.add(new RegionPassPrinter(PassInf, Out->os()));
          break;
        case PT_Loop:
          Passes.add(new LoopPassPrinter(PassInf, Out->os()));
          break;
        case PT_Function:
          Passes.add(new FunctionPassPrinter(PassInf, Out->os()));
          break;
        case PT_CallGraphSCC:
          Passes.add(new CallGraphSCCPassPrinter(PassInf, Out->os()));
          break;
        default:
          Passes.add(new ModulePassPrinter(PassInf, Out->os()));
          break;
        }
      }
    }

    if (PrintEachXForm)
      Passes.add(createPrintModulePass(&errs()));
  }

  // If -std-compile-opts was specified at the end of the pass list, add them.
  if (StandardCompileOpts) {
    AddStandardCompilePasses(Passes);
    StandardCompileOpts = false;
  }

  if (StandardLinkOpts) {
    AddStandardLinkPasses(Passes);
    StandardLinkOpts = false;
  }

  if (OptLevelO1)
    AddOptimizationPasses(Passes, *FPasses, 1, 0);

  if (OptLevelO2)
    AddOptimizationPasses(Passes, *FPasses, 2, 0);

  if (OptLevelOs)
    AddOptimizationPasses(Passes, *FPasses, 2, 1);

  if (OptLevelOz)
    AddOptimizationPasses(Passes, *FPasses, 2, 2);

  if (OptLevelO3)
    AddOptimizationPasses(Passes, *FPasses, 3, 0);

  if (OptLevelO1 || OptLevelO2 || OptLevelOs || OptLevelOz || OptLevelO3) {
    FPasses->doInitialization();
    for (Module::iterator F = M->begin(), E = M->end(); F != E; ++F)
      FPasses->run(*F);
    FPasses->doFinalization();
  }

  // @LOCALMOD-BEGIN
  if (PNaClABISimplifyPreOpt)
    PNaClABISimplifyAddPreOptPasses(Passes);

  if (PNaClABISimplifyPostOpt)
    PNaClABISimplifyAddPostOptPasses(Passes);
  // @LOCALMOD-END

  // Check that the module is well formed on completion of optimization
  if (!NoVerify && !VerifyEach)
    Passes.add(createVerifierPass());

  // Write bitcode or assembly to the output as the last step...
  if (!NoOutput && !AnalyzeOnly) {
    if (OutputAssembly)
      Passes.add(createPrintModulePass(&Out->os()));
    // @LOCALMOD
  }

  // Before executing passes, print the final values of the LLVM options.
  cl::PrintOptionValues();

  // Now that we have all of the passes ready, run them.
  Passes.run(*M.get());

// @LOCALMOD-BEGIN
  // Write bitcode to the output.
  if (!NoOutput && !AnalyzeOnly && !OutputAssembly) {
    switch (OutputFileFormat) {
      case LLVMFormat:
        WriteBitcodeToFile(M.get(), Out->os());
        break;
      case PNaClFormat:
        NaClWriteBitcodeToFile(M.get(), Out->os());
        break;
      default:
        errs() << "Don't understand bitcode format for generated bitcode.\n";
        return 1;
    }
  }
// @LOCALMOD-END

  // Declare success.
  if (!NoOutput || PrintBreakpoints)
    Out->keep();

  return 0;
}
//===----------------------------------------------------------------------===//
// 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);
  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);
  initializeAtomicExpandPass(Registry);
  initializeRewriteSymbolsPass(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 = parseIRFile(InputFilename, Err, Context);

  if (!M) {
    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::error_code EC;
    Out.reset(new tool_output_file(OutputFilename, EC, sys::fs::F_None));
    if (EC) {
      errs() << EC.message() << '\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;

    // The user has asked to use the new pass manager and provided a pipeline
    // string. Hand off the rest of the functionality to the new code for that
    // layer.
    return runPassPipeline(argv[0], Context, *M, Out.get(), PassPipeline,
                           OK, VK)
               ? 0
               : 1;
  }

  // Create a PassManager to hold and optimize the collection of passes we are
  // about to build.
  //
  PassManager Passes;

  // Add an appropriate TargetLibraryInfo pass for the module's triple.
  TargetLibraryInfo *TLI = new TargetLibraryInfo(Triple(M->getTargetTriple()));

  // The -disable-simplify-libcalls flag actually disables all builtin optzns.
  if (DisableSimplifyLibCalls)
    TLI->disableAllFunctions();
  Passes.add(TLI);

  // Add an appropriate DataLayout instance for this module.
  const DataLayout *DL = M->getDataLayout();
  if (!DL && !DefaultDataLayout.empty()) {
    M->setDataLayout(DefaultDataLayout);
    DL = M->getDataLayout();
  }

  if (DL)
    Passes.add(new DataLayoutPass());

  Triple ModuleTriple(M->getTargetTriple());
  TargetMachine *Machine = nullptr;
  if (ModuleTriple.getArch())
    Machine = GetTargetMachine(Triple(ModuleTriple));
  std::unique_ptr<TargetMachine> TM(Machine);

  // Add internal analysis passes from the target machine.
  if (TM)
    TM->addAnalysisPasses(Passes);

  std::unique_ptr<FunctionPassManager> FPasses;
  if (OptLevelO1 || OptLevelO2 || OptLevelOs || OptLevelOz || OptLevelO3) {
    FPasses.reset(new FunctionPassManager(M.get()));
    if (DL)
      FPasses->add(new DataLayoutPass());
    if (TM)
      TM->addAnalysisPasses(*FPasses);

  }

  if (PrintBreakpoints) {
    // Default to standard output.
    if (!Out) {
      if (OutputFilename.empty())
        OutputFilename = "-";

      std::error_code EC;
      Out = llvm::make_unique<tool_output_file>(OutputFilename, EC,
                                                sys::fs::F_None);
      if (EC) {
        errs() << EC.message() << '\n';
        return 1;
      }
    }
    Passes.add(createBreakpointPrinter(Out->os()));
    NoOutput = true;
  }

  // If the -strip-debug command line option was specified, add it.
  if (StripDebug)
    addPass(Passes, createStripSymbolsPass(true));

  // Create a new optimization pass for each one specified on the command line
  for (unsigned i = 0; i < PassList.size(); ++i) {
    if (StandardLinkOpts &&
        StandardLinkOpts.getPosition() < PassList.getPosition(i)) {
      AddStandardLinkPasses(Passes);
      StandardLinkOpts = false;
    }

    if (OptLevelO1 && OptLevelO1.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 1, 0);
      OptLevelO1 = false;
    }

    if (OptLevelO2 && OptLevelO2.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 2, 0);
      OptLevelO2 = false;
    }

    if (OptLevelOs && OptLevelOs.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 2, 1);
      OptLevelOs = false;
    }

    if (OptLevelOz && OptLevelOz.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 2, 2);
      OptLevelOz = false;
    }

    if (OptLevelO3 && OptLevelO3.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 3, 0);
      OptLevelO3 = false;
    }

    const PassInfo *PassInf = PassList[i];
    Pass *P = nullptr;
    if (PassInf->getTargetMachineCtor())
      P = PassInf->getTargetMachineCtor()(TM.get());
    else if (PassInf->getNormalCtor())
      P = PassInf->getNormalCtor()();
    else
      errs() << argv[0] << ": cannot create pass: "******"\n";
    if (P) {
      PassKind Kind = P->getPassKind();
      addPass(Passes, P);

      if (AnalyzeOnly) {
        switch (Kind) {
        case PT_BasicBlock:
          Passes.add(createBasicBlockPassPrinter(PassInf, Out->os(), Quiet));
          break;
        case PT_Region:
          Passes.add(createRegionPassPrinter(PassInf, Out->os(), Quiet));
          break;
        case PT_Loop:
          Passes.add(createLoopPassPrinter(PassInf, Out->os(), Quiet));
          break;
        case PT_Function:
          Passes.add(createFunctionPassPrinter(PassInf, Out->os(), Quiet));
          break;
        case PT_CallGraphSCC:
          Passes.add(createCallGraphPassPrinter(PassInf, Out->os(), Quiet));
          break;
        default:
          Passes.add(createModulePassPrinter(PassInf, Out->os(), Quiet));
          break;
        }
      }
    }

    if (PrintEachXForm)
      Passes.add(createPrintModulePass(errs()));
  }

  if (StandardLinkOpts) {
    AddStandardLinkPasses(Passes);
    StandardLinkOpts = false;
  }

  if (OptLevelO1)
    AddOptimizationPasses(Passes, *FPasses, 1, 0);

  if (OptLevelO2)
    AddOptimizationPasses(Passes, *FPasses, 2, 0);

  if (OptLevelOs)
    AddOptimizationPasses(Passes, *FPasses, 2, 1);

  if (OptLevelOz)
    AddOptimizationPasses(Passes, *FPasses, 2, 2);

  if (OptLevelO3)
    AddOptimizationPasses(Passes, *FPasses, 3, 0);

  if (OptLevelO1 || OptLevelO2 || OptLevelOs || OptLevelOz || OptLevelO3) {
    FPasses->doInitialization();
    for (Function &F : *M)
      FPasses->run(F);
    FPasses->doFinalization();
  }

  // Check that the module is well formed on completion of optimization
  if (!NoVerify && !VerifyEach) {
    Passes.add(createVerifierPass());
    Passes.add(createDebugInfoVerifierPass());
  }

  // Write bitcode or assembly to the output as the last step...
  if (!NoOutput && !AnalyzeOnly) {
    if (OutputAssembly)
      Passes.add(createPrintModulePass(Out->os()));
    else
      Passes.add(createBitcodeWriterPass(Out->os()));
  }

  // Before executing passes, print the final values of the LLVM options.
  cl::PrintOptionValues();

  // Now that we have all of the passes ready, run them.
  Passes.run(*M);

  // Declare success.
  if (!NoOutput || PrintBreakpoints)
    Out->keep();

  return 0;
}
示例#8
0
static int compileModule(char **argv, LLVMContext &Context) {
  // 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 =
      EnableHonorSignDependentRoundingFPMath;
  Options.UseSoftFloat = GenerateSoftFloatCalls;
  if (FloatABIForCalls != FloatABI::Default)
    Options.FloatABIType = FloatABIForCalls;
  Options.NoZerosInBSS = DontPlaceZerosInBSS;
  Options.GuaranteedTailCallOpt = EnableGuaranteedTailCallOpt;
  Options.DisableTailCalls = DisableTailCalls;
  Options.StackAlignmentOverride = OverrideStackAlignment;
  Options.RealignStack = EnableRealignStack;
  Options.TrapFuncName = TrapFuncName;
  Options.PositionIndependentExecutable = EnablePIE;
  Options.EnableSegmentedStacks = SegmentedStacks;
  Options.UseInitArray = UseInitArray;
  Options.SSPBufferSize = SSPBufferSize;

  std::auto_ptr<TargetMachine>
    target(TheTarget->createTargetMachine(TheTriple.getTriple(),
                                          MCPU, FeaturesStr, Options,
                                          RelocModel, CMModel, OLvl));
  assert(target.get() && "Could not allocate target machine!");
  assert(mod && "Should have exited after outputting help!");
  TargetMachine &Target = *target.get();

  if (DisableDotLoc)
    Target.setMCUseLoc(false);

  if (DisableCFI)
    Target.setMCUseCFI(false);

  if (EnableDwarfDirectory)
    Target.setMCUseDwarfDirectory(true);

  if (GenerateSoftFloatCalls)
    FloatABIForCalls = FloatABI::Soft;

  // Disable .loc support for older OS X versions.
  if (TheTriple.isMacOSX() &&
      TheTriple.isMacOSXVersionLT(10, 6))
    Target.setMCUseLoc(false);

  // Figure out where we are going to send the output.
  OwningPtr<tool_output_file> Out
    (GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0]));
  if (!Out) return 1;

  // Build up all of the passes that we want to do to the module.
  PassManager PM;

  // Add an appropriate TargetLibraryInfo pass for the module's triple.
  TargetLibraryInfo *TLI = new TargetLibraryInfo(TheTriple);
  if (DisableSimplifyLibCalls)
    TLI->disableAllFunctions();
  PM.add(TLI);

  if (target.get()) {
    PM.add(createNoTTIPass(target->getScalarTargetTransformInfo(),
                           target->getVectorTargetTransformInfo()));
  }

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

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

  if (RelaxAll) {
    if (FileType != TargetMachine::CGFT_ObjectFile)
      errs() << argv[0]
             << ": warning: ignoring -mc-relax-all because filetype != obj";
    else
      Target.setMCRelaxAll(true);
  }

  {
    formatted_raw_ostream FOS(Out->os());

    AnalysisID StartAfterID = 0;
    AnalysisID StopAfterID = 0;
    const PassRegistry *PR = PassRegistry::getPassRegistry();
    if (!StartAfter.empty()) {
      const PassInfo *PI = PR->getPassInfo(StartAfter);
      if (!PI) {
        errs() << argv[0] << ": start-after pass is not registered.\n";
        return 1;
      }
      StartAfterID = PI->getTypeInfo();
    }
    if (!StopAfter.empty()) {
      const PassInfo *PI = PR->getPassInfo(StopAfter);
      if (!PI) {
        errs() << argv[0] << ": stop-after pass is not registered.\n";
        return 1;
      }
      StopAfterID = PI->getTypeInfo();
    }

    // Ask the target to add backend passes as necessary.
    if (Target.addPassesToEmitFile(PM, FOS, FileType, NoVerify,
                                   StartAfterID, StopAfterID)) {
      errs() << argv[0] << ": target does not support generation of this"
             << " file type!\n";
      return 1;
    }

    // Before executing passes, print the final values of the LLVM options.
    cl::PrintOptionValues();

    PM.run(*mod);
  }

  // Declare success.
  Out->keep();

  return 0;
}
示例#9
0
//===----------------------------------------------------------------------===//
// 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();

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

  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;
  }

  // Allocate a full target machine description only if necessary.
  // FIXME: The choice of target should be controllable on the command line.
  std::auto_ptr<TargetMachine> target;

  SMDiagnostic Err;

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

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

  // Figure out what stream we are supposed to write to...
  OwningPtr<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,
                                   raw_fd_ostream::F_Binary));
    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;

  // Create a PassManager to hold and optimize the collection of passes we are
  // about to build.
  //
  PassManager Passes;

  // Add an appropriate TargetLibraryInfo pass for the module's triple.
  TargetLibraryInfo *TLI = new TargetLibraryInfo(Triple(M->getTargetTriple()));

  // The -disable-simplify-libcalls flag actually disables all builtin optzns.
  if (DisableSimplifyLibCalls)
    TLI->disableAllFunctions();
  Passes.add(TLI);

  // Add an appropriate TargetData instance for this module.
  TargetData *TD = 0;
  const std::string &ModuleDataLayout = M.get()->getDataLayout();
  if (!ModuleDataLayout.empty())
    TD = new TargetData(ModuleDataLayout);
  else if (!DefaultDataLayout.empty())
    TD = new TargetData(DefaultDataLayout);

  if (TD)
    Passes.add(TD);

  OwningPtr<FunctionPassManager> FPasses;
  if (OptLevelO1 || OptLevelO2 || OptLevelO3) {
    FPasses.reset(new FunctionPassManager(M.get()));
    if (TD)
      FPasses->add(new TargetData(*TD));
  }

  if (PrintBreakpoints) {
    // Default to standard output.
    if (!Out) {
      if (OutputFilename.empty())
        OutputFilename = "-";

      std::string ErrorInfo;
      Out.reset(new tool_output_file(OutputFilename.c_str(), ErrorInfo,
                                     raw_fd_ostream::F_Binary));
      if (!ErrorInfo.empty()) {
        errs() << ErrorInfo << '\n';
        return 1;
      }
    }
    Passes.add(new BreakpointPrinter(Out->os()));
    NoOutput = true;
  }

  // If the -strip-debug command line option was specified, add it.  If
  // -std-compile-opts was also specified, it will handle StripDebug.
  if (StripDebug && !StandardCompileOpts)
    addPass(Passes, createStripSymbolsPass(true));

  // Create a new optimization pass for each one specified on the command line
  for (unsigned i = 0; i < PassList.size(); ++i) {
    // Check to see if -std-compile-opts was specified before this option.  If
    // so, handle it.
    if (StandardCompileOpts &&
        StandardCompileOpts.getPosition() < PassList.getPosition(i)) {
      AddStandardCompilePasses(Passes);
      StandardCompileOpts = false;
    }

    if (StandardLinkOpts &&
        StandardLinkOpts.getPosition() < PassList.getPosition(i)) {
      AddStandardLinkPasses(Passes);
      StandardLinkOpts = false;
    }

    if (OptLevelO1 && OptLevelO1.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 1);
      OptLevelO1 = false;
    }

    if (OptLevelO2 && OptLevelO2.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 2);
      OptLevelO2 = false;
    }

    if (OptLevelO3 && OptLevelO3.getPosition() < PassList.getPosition(i)) {
      AddOptimizationPasses(Passes, *FPasses, 3);
      OptLevelO3 = false;
    }

    const PassInfo *PassInf = PassList[i];
    Pass *P = 0;
    if (PassInf->getNormalCtor())
      P = PassInf->getNormalCtor()();
    else
      errs() << argv[0] << ": cannot create pass: "******"\n";
    if (P) {
      PassKind Kind = P->getPassKind();
      addPass(Passes, P);

      if (AnalyzeOnly) {
        switch (Kind) {
        case PT_BasicBlock:
          Passes.add(new BasicBlockPassPrinter(PassInf, Out->os()));
          break;
        case PT_Region:
          Passes.add(new RegionPassPrinter(PassInf, Out->os()));
          break;
        case PT_Loop:
          Passes.add(new LoopPassPrinter(PassInf, Out->os()));
          break;
        case PT_Function:
          Passes.add(new FunctionPassPrinter(PassInf, Out->os()));
          break;
        case PT_CallGraphSCC:
          Passes.add(new CallGraphSCCPassPrinter(PassInf, Out->os()));
          break;
        default:
          Passes.add(new ModulePassPrinter(PassInf, Out->os()));
          break;
        }
      }
    }

    if (PrintEachXForm)
      Passes.add(createPrintModulePass(&errs()));
  }

  // If -std-compile-opts was specified at the end of the pass list, add them.
  if (StandardCompileOpts) {
    AddStandardCompilePasses(Passes);
    StandardCompileOpts = false;
  }

  if (StandardLinkOpts) {
    AddStandardLinkPasses(Passes);
    StandardLinkOpts = false;
  }

  if (OptLevelO1)
    AddOptimizationPasses(Passes, *FPasses, 1);

  if (OptLevelO2)
    AddOptimizationPasses(Passes, *FPasses, 2);

  if (OptLevelO3)
    AddOptimizationPasses(Passes, *FPasses, 3);

  if (OptLevelO1 || OptLevelO2 || OptLevelO3) {
    FPasses->doInitialization();
    for (Module::iterator F = M->begin(), E = M->end(); F != E; ++F)
      FPasses->run(*F);
    FPasses->doFinalization();
  }

  // Check that the module is well formed on completion of optimization
  if (!NoVerify && !VerifyEach)
    Passes.add(createVerifierPass());

  // Write bitcode or assembly to the output as the last step...
  if (!NoOutput && !AnalyzeOnly) {
    if (OutputAssembly)
      Passes.add(createPrintModulePass(&Out->os()));
    else
      Passes.add(createBitcodeWriterPass(Out->os()));
  }

  // Before executing passes, print the final values of the LLVM options.
  cl::PrintOptionValues();

  // Now that we have all of the passes ready, run them.
  Passes.run(*M.get());

  // Declare success.
  if (!NoOutput || PrintBreakpoints)
    Out->keep();

  return 0;
}
示例#10
0
static int compileModule(char **argv, LLVMContext &Context) {
  // Load the module to be compiled...
  SMDiagnostic Err;
  std::unique_ptr<Module> M;
  Module *mod = nullptr;
  Triple TheTriple;

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

  // If user asked for the 'native' CPU, autodetect here. If autodection fails,
  // this will set the CPU to an empty string which tells the target to
  // pick a basic default.
  if (MCPU == "native")
    MCPU = sys::getHostCPUName();

  // If user just wants to list available options, skip module loading
  if (!SkipModule) {
    M = parseIRFile(InputFilename, Err, Context);
    mod = M.get();
    if (mod == nullptr) {
      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 = InitTargetOptionsFromCodeGenFlags();
  Options.DisableIntegratedAS = NoIntegratedAssembler;
  Options.MCOptions.ShowMCEncoding = ShowMCEncoding;
  Options.MCOptions.MCUseDwarfDirectory = EnableDwarfDirectory;
  Options.MCOptions.AsmVerbose = AsmVerbose;

  std::unique_ptr<TargetMachine> target(
      TheTarget->createTargetMachine(TheTriple.getTriple(), MCPU, FeaturesStr,
                                     Options, RelocModel, CMModel, OLvl));
  assert(target.get() && "Could not allocate target machine!");

  // If we don't have a module then just exit now. We do this down
  // here since the CPU/Feature help is underneath the target machine
  // creation.
  if (SkipModule)
    return 0;

  assert(mod && "Should have exited if we didn't have a module!");
  TargetMachine &Target = *target.get();

  if (GenerateSoftFloatCalls)
    FloatABIForCalls = FloatABI::Soft;

  // Figure out where we are going to send the output.
  std::unique_ptr<tool_output_file> Out(
      GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0]));
  if (!Out) return 1;

  // Build up all of the passes that we want to do to the module.
  PassManager PM;

  // Add an appropriate TargetLibraryInfo pass for the module's triple.
  TargetLibraryInfo *TLI = new TargetLibraryInfo(TheTriple);
  if (DisableSimplifyLibCalls)
    TLI->disableAllFunctions();
  PM.add(TLI);

  // Add the target data from the target machine, if it exists, or the module.
  if (const DataLayout *DL = Target.getSubtargetImpl()->getDataLayout())
    mod->setDataLayout(DL);
  PM.add(new DataLayoutPass(mod));

  if (RelaxAll.getNumOccurrences() > 0 &&
      FileType != TargetMachine::CGFT_ObjectFile)
    errs() << argv[0]
             << ": warning: ignoring -mc-relax-all because filetype != obj";

  {
    formatted_raw_ostream FOS(Out->os());

    AnalysisID StartAfterID = nullptr;
    AnalysisID StopAfterID = nullptr;
    const PassRegistry *PR = PassRegistry::getPassRegistry();
    if (!StartAfter.empty()) {
      const PassInfo *PI = PR->getPassInfo(StartAfter);
      if (!PI) {
        errs() << argv[0] << ": start-after pass is not registered.\n";
        return 1;
      }
      StartAfterID = PI->getTypeInfo();
    }
    if (!StopAfter.empty()) {
      const PassInfo *PI = PR->getPassInfo(StopAfter);
      if (!PI) {
        errs() << argv[0] << ": stop-after pass is not registered.\n";
        return 1;
      }
      StopAfterID = PI->getTypeInfo();
    }

    // Ask the target to add backend passes as necessary.
    if (Target.addPassesToEmitFile(PM, FOS, FileType, NoVerify,
                                   StartAfterID, StopAfterID)) {
      errs() << argv[0] << ": target does not support generation of this"
             << " file type!\n";
      return 1;
    }

    // Before executing passes, print the final values of the LLVM options.
    cl::PrintOptionValues();

    PM.run(*mod);
  }

  // Declare success.
  Out->keep();

  return 0;
}
示例#11
0
bool EmitAssemblyHelper::AddEmitPasses(BackendAction Action,
                                       formatted_raw_ostream &OS) {
  // Create the TargetMachine for generating code.
  std::string Error;
  std::string Triple = TheModule->getTargetTriple();
  const llvm::Target *TheTarget = TargetRegistry::lookupTarget(Triple, Error);
  if (!TheTarget) {
    Diags.Report(diag::err_fe_unable_to_create_target) << Error;
    return false;
  }

  // FIXME: Expose these capabilities via actual APIs!!!! Aside from just
  // being gross, this is also totally broken if we ever care about
  // concurrency.

  TargetMachine::setAsmVerbosityDefault(CodeGenOpts.AsmVerbose);

  TargetMachine::setFunctionSections(CodeGenOpts.FunctionSections);
  TargetMachine::setDataSections    (CodeGenOpts.DataSections);

  // FIXME: Parse this earlier.
  llvm::CodeModel::Model CM;
  if (CodeGenOpts.CodeModel == "small") {
    CM = llvm::CodeModel::Small;
  } else if (CodeGenOpts.CodeModel == "kernel") {
    CM = llvm::CodeModel::Kernel;
  } else if (CodeGenOpts.CodeModel == "medium") {
    CM = llvm::CodeModel::Medium;
  } else if (CodeGenOpts.CodeModel == "large") {
    CM = llvm::CodeModel::Large;
  } else {
    assert(CodeGenOpts.CodeModel.empty() && "Invalid code model!");
    CM = llvm::CodeModel::Default;
  }

  SmallVector<const char *, 16> BackendArgs;
  BackendArgs.push_back("clang"); // Fake program name.
  if (!CodeGenOpts.DebugPass.empty()) {
    BackendArgs.push_back("-debug-pass");
    BackendArgs.push_back(CodeGenOpts.DebugPass.c_str());
  }
  if (!CodeGenOpts.LimitFloatPrecision.empty()) {
    BackendArgs.push_back("-limit-float-precision");
    BackendArgs.push_back(CodeGenOpts.LimitFloatPrecision.c_str());
  }
  if (llvm::TimePassesIsEnabled)
    BackendArgs.push_back("-time-passes");
  for (unsigned i = 0, e = CodeGenOpts.BackendOptions.size(); i != e; ++i)
    BackendArgs.push_back(CodeGenOpts.BackendOptions[i].c_str());
  if (CodeGenOpts.NoGlobalMerge)
    BackendArgs.push_back("-global-merge=false");
  BackendArgs.push_back(0);
  llvm::cl::ParseCommandLineOptions(BackendArgs.size() - 1,
                                    BackendArgs.data());

  std::string FeaturesStr;
  if (TargetOpts.Features.size()) {
    SubtargetFeatures Features;
    for (std::vector<std::string>::const_iterator
           it = TargetOpts.Features.begin(),
           ie = TargetOpts.Features.end(); it != ie; ++it)
      Features.AddFeature(*it);
    FeaturesStr = Features.getString();
  }

  llvm::Reloc::Model RM = llvm::Reloc::Default;
  if (CodeGenOpts.RelocationModel == "static") {
    RM = llvm::Reloc::Static;
  } else if (CodeGenOpts.RelocationModel == "pic") {
    RM = llvm::Reloc::PIC_;
  } else {
    assert(CodeGenOpts.RelocationModel == "dynamic-no-pic" &&
           "Invalid PIC model!");
    RM = llvm::Reloc::DynamicNoPIC;
  }

  CodeGenOpt::Level OptLevel = CodeGenOpt::Default;
  switch (CodeGenOpts.OptimizationLevel) {
  default: break;
  case 0: OptLevel = CodeGenOpt::None; break;
  case 3: OptLevel = CodeGenOpt::Aggressive; break;
  }

  llvm::TargetOptions Options;

  // Set frame pointer elimination mode.
  if (!CodeGenOpts.DisableFPElim) {
    Options.NoFramePointerElim = false;
    Options.NoFramePointerElimNonLeaf = false;
  } else if (CodeGenOpts.OmitLeafFramePointer) {
    Options.NoFramePointerElim = false;
    Options.NoFramePointerElimNonLeaf = true;
  } else {
    Options.NoFramePointerElim = true;
    Options.NoFramePointerElimNonLeaf = true;
  }

  if (CodeGenOpts.UseInitArray)
    Options.UseInitArray = true;

  // Set float ABI type.
  if (CodeGenOpts.FloatABI == "soft" || CodeGenOpts.FloatABI == "softfp")
    Options.FloatABIType = llvm::FloatABI::Soft;
  else if (CodeGenOpts.FloatABI == "hard")
    Options.FloatABIType = llvm::FloatABI::Hard;
  else {
    assert(CodeGenOpts.FloatABI.empty() && "Invalid float abi!");
    Options.FloatABIType = llvm::FloatABI::Default;
  }

  Options.LessPreciseFPMADOption = CodeGenOpts.LessPreciseFPMAD;
  Options.NoInfsFPMath = CodeGenOpts.NoInfsFPMath;
  Options.NoNaNsFPMath = CodeGenOpts.NoNaNsFPMath;
  Options.NoZerosInBSS = CodeGenOpts.NoZeroInitializedInBSS;
  Options.UnsafeFPMath = CodeGenOpts.UnsafeFPMath;
  Options.UseSoftFloat = CodeGenOpts.SoftFloat;
  Options.StackAlignmentOverride = CodeGenOpts.StackAlignment;
  Options.RealignStack = CodeGenOpts.StackRealignment;
  Options.DisableTailCalls = CodeGenOpts.DisableTailCalls;
  Options.TrapFuncName = CodeGenOpts.TrapFuncName;
  Options.PositionIndependentExecutable = LangOpts.PIELevel != 0;

  TargetMachine *TM = TheTarget->createTargetMachine(Triple, TargetOpts.CPU,
                                                     FeaturesStr, Options,
                                                     RM, CM, OptLevel);

  if (CodeGenOpts.RelaxAll)
    TM->setMCRelaxAll(true);
  if (CodeGenOpts.SaveTempLabels)
    TM->setMCSaveTempLabels(true);
  if (CodeGenOpts.NoDwarf2CFIAsm)
    TM->setMCUseCFI(false);
  if (!CodeGenOpts.NoDwarfDirectoryAsm)
    TM->setMCUseDwarfDirectory(true);
  if (CodeGenOpts.NoExecStack)
    TM->setMCNoExecStack(true);

  // Create the code generator passes.
  PassManager *PM = getCodeGenPasses();

  // Add LibraryInfo.
  TargetLibraryInfo *TLI = new TargetLibraryInfo();
  if (!CodeGenOpts.SimplifyLibCalls)
    TLI->disableAllFunctions();
  PM->add(TLI);

  // Normal mode, emit a .s or .o file by running the code generator. Note,
  // this also adds codegenerator level optimization passes.
  TargetMachine::CodeGenFileType CGFT = TargetMachine::CGFT_AssemblyFile;
  if (Action == Backend_EmitObj)
    CGFT = TargetMachine::CGFT_ObjectFile;
  else if (Action == Backend_EmitMCNull)
    CGFT = TargetMachine::CGFT_Null;
  else
    assert(Action == Backend_EmitAssembly && "Invalid action!");

  // Add ObjC ARC final-cleanup optimizations. This is done as part of the
  // "codegen" passes so that it isn't run multiple times when there is
  // inlining happening.
  if (LangOpts.ObjCAutoRefCount &&
      CodeGenOpts.OptimizationLevel > 0)
    PM->add(createObjCARCContractPass());

  if (TM->addPassesToEmitFile(*PM, OS, CGFT,
                              /*DisableVerify=*/!CodeGenOpts.VerifyModule)) {
    Diags.Report(diag::err_fe_unable_to_interface_with_target);
    return false;
  }

  return true;
}
示例#12
0
文件: optimizer.cpp 项目: Axure/ldc
//////////////////////////////////////////////////////////////////////////////////////////
// This function runs optimization passes based on command line arguments.
// Returns true if any optimization passes were invoked.
bool ldc_optimize_module(llvm::Module *M)
{
    // Create a PassManager to hold and optimize the collection of
    // per-module passes we are about to build.
#if LDC_LLVM_VER >= 307
    legacy::
#endif
    PassManager mpm;

#if LDC_LLVM_VER >= 307
    // Add an appropriate TargetLibraryInfo pass for the module's triple.
    TargetLibraryInfoImpl *tlii = new TargetLibraryInfoImpl(Triple(M->getTargetTriple()));

    // The -disable-simplify-libcalls flag actually disables all builtin optzns.
    if (disableSimplifyLibCalls)
      tlii->disableAllFunctions();

    mpm.add(new TargetLibraryInfoWrapperPass(*tlii));
#else
    // Add an appropriate TargetLibraryInfo pass for the module's triple.
    TargetLibraryInfo *tli = new TargetLibraryInfo(Triple(M->getTargetTriple()));

    // The -disable-simplify-libcalls flag actually disables all builtin optzns.
    if (disableSimplifyLibCalls)
      tli->disableAllFunctions();

    mpm.add(tli);
#endif

    // Add an appropriate DataLayout instance for this module.
#if LDC_LLVM_VER >= 307
    // The DataLayout is already set at the module (in module.cpp,
    // method Module::genLLVMModule())
    // FIXME: Introduce new command line switch default-data-layout to
    // override the module data layout
#elif LDC_LLVM_VER == 306
    mpm.add(new DataLayoutPass());
#elif LDC_LLVM_VER == 305
    const DataLayout *DL = M->getDataLayout();
    assert(DL && "DataLayout not set at module");
    mpm.add(new DataLayoutPass(*DL));
#elif LDC_LLVM_VER >= 302
    mpm.add(new DataLayout(M));
#else
    mpm.add(new TargetData(M));
#endif

#if LDC_LLVM_VER >= 307
    // Add internal analysis passes from the target machine.
    mpm.add(createTargetTransformInfoWrapperPass(gTargetMachine->getTargetIRAnalysis()));
#elif LDC_LLVM_VER >= 305
    // Add internal analysis passes from the target machine.
    gTargetMachine->addAnalysisPasses(mpm);
#endif

    // Also set up a manager for the per-function passes.
#if LDC_LLVM_VER >= 307
    legacy::
#endif
    FunctionPassManager fpm(M);

#if LDC_LLVM_VER >= 307
    // Add internal analysis passes from the target machine.
    fpm.add(createTargetTransformInfoWrapperPass(gTargetMachine->getTargetIRAnalysis()));
#elif LDC_LLVM_VER >= 306
    fpm.add(new DataLayoutPass());
    gTargetMachine->addAnalysisPasses(fpm);
#elif LDC_LLVM_VER == 305
    fpm.add(new DataLayoutPass(M));
    gTargetMachine->addAnalysisPasses(fpm);
#elif LDC_LLVM_VER >= 302
    fpm.add(new DataLayout(M));
#else
    fpm.add(new TargetData(M));
#endif

    // If the -strip-debug command line option was specified, add it before
    // anything else.
    if (stripDebug)
        mpm.add(createStripSymbolsPass(true));

    bool defaultsAdded = false;
    // Create a new optimization pass for each one specified on the command line
    for (unsigned i = 0; i < passList.size(); ++i) {
        if (optimizeLevel && optimizeLevel.getPosition() < passList.getPosition(i)) {
            addOptimizationPasses(mpm, fpm, optLevel(), sizeLevel());
            defaultsAdded = true;
        }

        const PassInfo *passInf = passList[i];
        Pass *pass = 0;
        if (passInf->getNormalCtor())
            pass = passInf->getNormalCtor()();
        else {
            const char* arg = passInf->getPassArgument(); // may return null
            if (arg)
                error(Loc(), "Can't create pass '-%s' (%s)", arg, pass->getPassName());
            else
                error(Loc(), "Can't create pass (%s)", pass->getPassName());
            llvm_unreachable("pass creation failed");
        }
        if (pass) {
            addPass(mpm, pass);
        }
    }

    // Add the default passes for the specified optimization level.
    if (!defaultsAdded)
        addOptimizationPasses(mpm, fpm, optLevel(), sizeLevel());

    // Run per-function passes.
    fpm.doInitialization();
    for (llvm::Module::iterator F = M->begin(), E = M->end(); F != E; ++F)
        fpm.run(*F);
    fpm.doFinalization();

    // Run per-module passes.
    mpm.run(*M);

    // Verify the resulting module.
    verifyModule(M);

    // Report that we run some passes.
    return true;
}
示例#13
0
////////////////////////////////////////////////////////////////////////////////
// This function runs optimization passes based on command line arguments.
// Returns true if any optimization passes were invoked.
bool ldc_optimize_module(llvm::Module *M) {
// Create a PassManager to hold and optimize the collection of
// per-module passes we are about to build.
#if LDC_LLVM_VER >= 307
  legacy::
#endif
      PassManager mpm;

#if LDC_LLVM_VER >= 307
  // Add an appropriate TargetLibraryInfo pass for the module's triple.
  TargetLibraryInfoImpl *tlii =
      new TargetLibraryInfoImpl(Triple(M->getTargetTriple()));

  // The -disable-simplify-libcalls flag actually disables all builtin optzns.
  if (disableSimplifyLibCalls)
    tlii->disableAllFunctions();

  mpm.add(new TargetLibraryInfoWrapperPass(*tlii));
#else
  // Add an appropriate TargetLibraryInfo pass for the module's triple.
  TargetLibraryInfo *tli = new TargetLibraryInfo(Triple(M->getTargetTriple()));

  // The -disable-simplify-libcalls flag actually disables all builtin optzns.
  if (disableSimplifyLibCalls) {
    tli->disableAllFunctions();
  }

  mpm.add(tli);
#endif

// Add an appropriate DataLayout instance for this module.
#if LDC_LLVM_VER >= 307
// The DataLayout is already set at the module (in module.cpp,
// method Module::genLLVMModule())
// FIXME: Introduce new command line switch default-data-layout to
// override the module data layout
#elif LDC_LLVM_VER == 306
  mpm.add(new DataLayoutPass());
#else
                                    const DataLayout *DL = M->getDataLayout();
                                    assert(DL &&
                                           "DataLayout not set at module");
                                    mpm.add(new DataLayoutPass(*DL));
#endif

#if LDC_LLVM_VER >= 307
  // Add internal analysis passes from the target machine.
  mpm.add(createTargetTransformInfoWrapperPass(
      gTargetMachine->getTargetIRAnalysis()));
#else
  // Add internal analysis passes from the target machine.
  gTargetMachine->addAnalysisPasses(mpm);
#endif

// Also set up a manager for the per-function passes.
#if LDC_LLVM_VER >= 307
  legacy::
#endif
      FunctionPassManager fpm(M);

#if LDC_LLVM_VER >= 307
  // Add internal analysis passes from the target machine.
  fpm.add(createTargetTransformInfoWrapperPass(
      gTargetMachine->getTargetIRAnalysis()));
#elif LDC_LLVM_VER >= 306
  fpm.add(new DataLayoutPass());
  gTargetMachine->addAnalysisPasses(fpm);
#else
                                    fpm.add(new DataLayoutPass(M));
                                    gTargetMachine->addAnalysisPasses(fpm);
#endif

  // If the -strip-debug command line option was specified, add it before
  // anything else.
  if (stripDebug) {
    mpm.add(createStripSymbolsPass(true));
  }

  addOptimizationPasses(mpm, fpm, optLevel(), sizeLevel());

  // Run per-function passes.
  fpm.doInitialization();
  for (auto &F : *M) {
    fpm.run(F);
  }
  fpm.doFinalization();

  // Run per-module passes.
  mpm.run(*M);

  // Verify the resulting module.
  verifyModule(M);

  // Report that we run some passes.
  return true;
}
示例#14
0
//////////////////////////////////////////////////////////////////////////////////////////
// This function runs optimization passes based on command line arguments.
// Returns true if any optimization passes were invoked.
bool ldc_optimize_module(llvm::Module* m)
{
    // Create a PassManager to hold and optimize the collection of
    // per-module passes we are about to build.
    PassManager mpm;

    // Add an appropriate TargetLibraryInfo pass for the module's triple.
    TargetLibraryInfo *tli = new TargetLibraryInfo(Triple(m->getTargetTriple()));

    // The -disable-simplify-libcalls flag actually disables all builtin optzns.
    if (disableSimplifyLibCalls)
        tli->disableAllFunctions();
    mpm.add(tli);

    // Add an appropriate TargetData instance for this module.
#if LDC_LLVM_VER >= 302
    mpm.add(new DataLayout(m));
#else
    mpm.add(new TargetData(m));
#endif

    // Also set up a manager for the per-function passes.
    FunctionPassManager fpm(m);
#if LDC_LLVM_VER >= 302
    fpm.add(new DataLayout(m));
#else
    fpm.add(new TargetData(m));
#endif

    // If the -strip-debug command line option was specified, add it before
    // anything else.
    if (stripDebug)
        mpm.add(createStripSymbolsPass(true));

    bool defaultsAdded = false;
    // Create a new optimization pass for each one specified on the command line
    for (unsigned i = 0; i < passList.size(); ++i) {
        if (optimizeLevel && optimizeLevel.getPosition() < passList.getPosition(i)) {
            addOptimizationPasses(mpm, fpm, optLevel(), sizeLevel());
            defaultsAdded = true;
        }

        const PassInfo *passInf = passList[i];
        Pass *pass = 0;
        if (passInf->getNormalCtor())
            pass = passInf->getNormalCtor()();
        else {
            const char* arg = passInf->getPassArgument(); // may return null
            if (arg)
                error("Can't create pass '-%s' (%s)", arg, pass->getPassName());
            else
                error("Can't create pass (%s)", pass->getPassName());
            llvm_unreachable("pass creation failed");
        }
        if (pass) {
            addPass(mpm, pass);
        }
    }

    // Add the default passes for the specified optimization level.
    if (!defaultsAdded)
        addOptimizationPasses(mpm, fpm, optLevel(), sizeLevel());

    // Run per-function passes.
    fpm.doInitialization();
    for (llvm::Module::iterator F = m->begin(), E = m->end(); F != E; ++F)
        fpm.run(*F);
    fpm.doFinalization();

    // Run per-module passes.
    mpm.run(*m);

    // Verify the resulting module.
    verifyModule(m);

    // Report that we run some passes.
    return true;
}
示例#15
0
// The following function is adapted from llc.cpp
int CompileModule(Module *mod, raw_string_ostream &os, bool emitBRIG,
                  int OptLevel) {
  // Load the module to be compiled...
  SMDiagnostic Err;

  Triple TheTriple;

  TheTriple = Triple(mod->getTargetTriple());

  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() << Error;
    return 0;
  }

  // Package up features to be passed to target/subtarget
  std::string FeaturesStr;

  CodeGenOpt::Level OLvl = CodeGenOpt::Default;

  switch (OptLevel) {
  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;

  std::unique_ptr<TargetMachine> target(
      TheTarget->createTargetMachine(TheTriple.getTriple(), MCPU, FeaturesStr,
                                     Options, RelocModel, CMModel, OLvl));
  assert(target.get() && "Could not allocate target machine!");
  assert(mod && "Should have exited if we didn't have a module!");
  TargetMachine &Target = *target.get();

  if (GenerateSoftFloatCalls)
    FloatABIForCalls = FloatABI::Soft;

  // Build up all of the passes that we want to do to the module.
  PassManager PM;

  // Add an appropriate TargetLibraryInfo pass for the module's triple.
  TargetLibraryInfo *TLI = new TargetLibraryInfo(TheTriple);
  if (DisableSimplifyLibCalls)
    TLI->disableAllFunctions();
  PM.add(TLI);

  // Add the target data from the target machine, if it exists, or the module.
  if (const DataLayout *DL = Target.getSubtargetImpl()->getDataLayout())
    mod->setDataLayout(DL);
  PM.add(new DataLayoutPass());

  auto FileType = (emitBRIG
                   ? TargetMachine::CGFT_ObjectFile
                   : TargetMachine::CGFT_AssemblyFile);

  formatted_raw_ostream FOS(os);

  // Ask the target to add backend passes as necessary.
  bool Verify = false;
  if (Target.addPassesToEmitFile(PM, FOS, FileType, Verify)) {
    errs() << "target does not support generation of this"
           << " file type!\n";
    return 0;
  }

  PM.run(*mod);

  return 1;
}