示例#1
0
void PassBuilder::crossRegisterProxies(LoopAnalysisManager &LAM,
                                       FunctionAnalysisManager &FAM,
                                       CGSCCAnalysisManager &CGAM,
                                       ModuleAnalysisManager &MAM) {
  MAM.registerPass([&] { return FunctionAnalysisManagerModuleProxy(FAM); });
  MAM.registerPass([&] { return CGSCCAnalysisManagerModuleProxy(CGAM); });
  CGAM.registerPass([&] { return ModuleAnalysisManagerCGSCCProxy(MAM); });
  FAM.registerPass([&] { return CGSCCAnalysisManagerFunctionProxy(CGAM); });
  FAM.registerPass([&] { return ModuleAnalysisManagerFunctionProxy(MAM); });
  FAM.registerPass([&] { return LoopAnalysisManagerFunctionProxy(LAM); });
  LAM.registerPass([&] { return FunctionAnalysisManagerLoopProxy(FAM); });
}
示例#2
0
bool llvm::runPassPipeline(StringRef Arg0, LLVMContext &Context, Module &M,
                           tool_output_file *Out, StringRef PassPipeline,
                           OutputKind OK, VerifierKind VK) {
  FunctionAnalysisManager FAM;
  ModuleAnalysisManager MAM;

  // FIXME: Lift this registration of analysis passes into a .def file adjacent
  // to the one used to associate names with passes.
  MAM.registerPass(LazyCallGraphAnalysis());

  // Cross register the analysis managers through their proxies.
  MAM.registerPass(FunctionAnalysisManagerModuleProxy(FAM));
  FAM.registerPass(ModuleAnalysisManagerFunctionProxy(MAM));

  ModulePassManager MPM;
  if (VK > VK_NoVerifier)
    MPM.addPass(VerifierPass());

  if (!parsePassPipeline(MPM, PassPipeline, VK == VK_VerifyEachPass)) {
    errs() << Arg0 << ": unable to parse pass pipeline description.\n";
    return false;
  }

  if (VK > VK_NoVerifier)
    MPM.addPass(VerifierPass());

  // Add any relevant output pass at the end of the pipeline.
  switch (OK) {
  case OK_NoOutput:
    break; // No output pass needed.
  case OK_OutputAssembly:
    MPM.addPass(PrintModulePass(Out->os()));
    break;
  case OK_OutputBitcode:
    MPM.addPass(BitcodeWriterPass(Out->os()));
    break;
  }

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

  // Now that we have all of the passes ready, run them.
  MPM.run(&M, &MAM);

  // Declare success.
  if (OK != OK_NoOutput)
    Out->keep();
  return true;
}
示例#3
0
文件: LTO.cpp 项目: envytools/lld
static void runNewCustomLtoPasses(Module &M, TargetMachine &TM) {
  PassBuilder PB(&TM);

  AAManager AA;

  // Parse a custom AA pipeline if asked to.
  if (!PB.parseAAPipeline(AA, Config->LtoAAPipeline)) {
    error("Unable to parse AA pipeline description: " + Config->LtoAAPipeline);
    return;
  }

  LoopAnalysisManager LAM;
  FunctionAnalysisManager FAM;
  CGSCCAnalysisManager CGAM;
  ModuleAnalysisManager MAM;

  // Register the AA manager first so that our version is the one used.
  FAM.registerPass([&] { return std::move(AA); });

  // Register all the basic analyses with the managers.
  PB.registerModuleAnalyses(MAM);
  PB.registerCGSCCAnalyses(CGAM);
  PB.registerFunctionAnalyses(FAM);
  PB.registerLoopAnalyses(LAM);
  PB.crossRegisterProxies(LAM, FAM, CGAM, MAM);

  ModulePassManager MPM;
  if (!Config->DisableVerify)
    MPM.addPass(VerifierPass());

  // Now, add all the passes we've been requested to.
  if (!PB.parsePassPipeline(MPM, Config->LtoNewPmPasses)) {
    error("unable to parse pass pipeline description: " +
          Config->LtoNewPmPasses);
    return;
  }

  if (!Config->DisableVerify)
    MPM.addPass(VerifierPass());
  MPM.run(M, MAM);
}
示例#4
0
/// A clean version of `EmitAssembly` that uses the new pass manager.
///
/// Not all features are currently supported in this system, but where
/// necessary it falls back to the legacy pass manager to at least provide
/// basic functionality.
///
/// This API is planned to have its functionality finished and then to replace
/// `EmitAssembly` at some point in the future when the default switches.
void EmitAssemblyHelper::EmitAssemblyWithNewPassManager(
    BackendAction Action, std::unique_ptr<raw_pwrite_stream> OS) {
  TimeRegion Region(llvm::TimePassesIsEnabled ? &CodeGenerationTime : nullptr);
  setCommandLineOpts(CodeGenOpts);

  // The new pass manager always makes a target machine available to passes
  // during construction.
  CreateTargetMachine(/*MustCreateTM*/ true);
  if (!TM)
    // This will already be diagnosed, just bail.
    return;
  TheModule->setDataLayout(TM->createDataLayout());

  Optional<PGOOptions> PGOOpt;

  if (CodeGenOpts.hasProfileIRInstr())
    // -fprofile-generate.
    PGOOpt = PGOOptions(CodeGenOpts.InstrProfileOutput.empty()
                            ? DefaultProfileGenName
                            : CodeGenOpts.InstrProfileOutput,
                        "", "", true, CodeGenOpts.DebugInfoForProfiling);
  else if (CodeGenOpts.hasProfileIRUse())
    // -fprofile-use.
    PGOOpt = PGOOptions("", CodeGenOpts.ProfileInstrumentUsePath, "", false,
                        CodeGenOpts.DebugInfoForProfiling);
  else if (!CodeGenOpts.SampleProfileFile.empty())
    // -fprofile-sample-use
    PGOOpt = PGOOptions("", "", CodeGenOpts.SampleProfileFile, false,
                        CodeGenOpts.DebugInfoForProfiling);
  else if (CodeGenOpts.DebugInfoForProfiling)
    // -fdebug-info-for-profiling
    PGOOpt = PGOOptions("", "", "", false, true);

  PassBuilder PB(TM.get(), PGOOpt);

  LoopAnalysisManager LAM;
  FunctionAnalysisManager FAM;
  CGSCCAnalysisManager CGAM;
  ModuleAnalysisManager MAM;

  // Register the AA manager first so that our version is the one used.
  FAM.registerPass([&] { return PB.buildDefaultAAPipeline(); });

  // Register the target library analysis directly and give it a customized
  // preset TLI.
  Triple TargetTriple(TheModule->getTargetTriple());
  std::unique_ptr<TargetLibraryInfoImpl> TLII(
      createTLII(TargetTriple, CodeGenOpts));
  FAM.registerPass([&] { return TargetLibraryAnalysis(*TLII); });
  MAM.registerPass([&] { return TargetLibraryAnalysis(*TLII); });

  // Register all the basic analyses with the managers.
  PB.registerModuleAnalyses(MAM);
  PB.registerCGSCCAnalyses(CGAM);
  PB.registerFunctionAnalyses(FAM);
  PB.registerLoopAnalyses(LAM);
  PB.crossRegisterProxies(LAM, FAM, CGAM, MAM);

  ModulePassManager MPM(CodeGenOpts.DebugPassManager);

  if (!CodeGenOpts.DisableLLVMPasses) {
    bool IsThinLTO = CodeGenOpts.EmitSummaryIndex;
    bool IsLTO = CodeGenOpts.PrepareForLTO;

    if (CodeGenOpts.OptimizationLevel == 0) {
      // Build a minimal pipeline based on the semantics required by Clang,
      // which is just that always inlining occurs.
      MPM.addPass(AlwaysInlinerPass());
      if (IsThinLTO)
        MPM.addPass(NameAnonGlobalPass());
    } else {
      // Map our optimization levels into one of the distinct levels used to
      // configure the pipeline.
      PassBuilder::OptimizationLevel Level = mapToLevel(CodeGenOpts);

      if (IsThinLTO) {
        MPM = PB.buildThinLTOPreLinkDefaultPipeline(
            Level, CodeGenOpts.DebugPassManager);
        MPM.addPass(NameAnonGlobalPass());
      } else if (IsLTO) {
        MPM = PB.buildLTOPreLinkDefaultPipeline(Level,
                                                CodeGenOpts.DebugPassManager);
      } else {
        MPM = PB.buildPerModuleDefaultPipeline(Level,
                                               CodeGenOpts.DebugPassManager);
      }
    }
  }

  // FIXME: We still use the legacy pass manager to do code generation. We
  // create that pass manager here and use it as needed below.
  legacy::PassManager CodeGenPasses;
  bool NeedCodeGen = false;
  Optional<raw_fd_ostream> ThinLinkOS;

  // Append any output we need to the pass manager.
  switch (Action) {
  case Backend_EmitNothing:
    break;

  case Backend_EmitBC:
    if (CodeGenOpts.EmitSummaryIndex) {
      if (!CodeGenOpts.ThinLinkBitcodeFile.empty()) {
        std::error_code EC;
        ThinLinkOS.emplace(CodeGenOpts.ThinLinkBitcodeFile, EC,
                           llvm::sys::fs::F_None);
        if (EC) {
          Diags.Report(diag::err_fe_unable_to_open_output)
              << CodeGenOpts.ThinLinkBitcodeFile << EC.message();
          return;
        }
      }
      MPM.addPass(
          ThinLTOBitcodeWriterPass(*OS, ThinLinkOS ? &*ThinLinkOS : nullptr));
    } else {
      MPM.addPass(BitcodeWriterPass(*OS, CodeGenOpts.EmitLLVMUseLists,
                                    CodeGenOpts.EmitSummaryIndex,
                                    CodeGenOpts.EmitSummaryIndex));
    }
    break;

  case Backend_EmitLL:
    MPM.addPass(PrintModulePass(*OS, "", CodeGenOpts.EmitLLVMUseLists));
    break;

  case Backend_EmitAssembly:
  case Backend_EmitMCNull:
  case Backend_EmitObj:
    NeedCodeGen = true;
    CodeGenPasses.add(
        createTargetTransformInfoWrapperPass(getTargetIRAnalysis()));
    if (!AddEmitPasses(CodeGenPasses, Action, *OS))
      // FIXME: Should we handle this error differently?
      return;
    break;
  }

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

  // Now that we have all of the passes ready, run them.
  {
    PrettyStackTraceString CrashInfo("Optimizer");
    MPM.run(*TheModule, MAM);
  }

  // Now if needed, run the legacy PM for codegen.
  if (NeedCodeGen) {
    PrettyStackTraceString CrashInfo("Code generation");
    CodeGenPasses.run(*TheModule);
  }
}
示例#5
0
/// A clean version of `EmitAssembly` that uses the new pass manager.
///
/// Not all features are currently supported in this system, but where
/// necessary it falls back to the legacy pass manager to at least provide
/// basic functionality.
///
/// This API is planned to have its functionality finished and then to replace
/// `EmitAssembly` at some point in the future when the default switches.
void EmitAssemblyHelper::EmitAssemblyWithNewPassManager(
    BackendAction Action, std::unique_ptr<raw_pwrite_stream> OS) {
  TimeRegion Region(llvm::TimePassesIsEnabled ? &CodeGenerationTime : nullptr);
  setCommandLineOpts();

  // The new pass manager always makes a target machine available to passes
  // during construction.
  CreateTargetMachine(/*MustCreateTM*/ true);
  if (!TM)
    // This will already be diagnosed, just bail.
    return;
  TheModule->setDataLayout(TM->createDataLayout());

  PassBuilder PB(TM.get());

  LoopAnalysisManager LAM;
  FunctionAnalysisManager FAM;
  CGSCCAnalysisManager CGAM;
  ModuleAnalysisManager MAM;

  // Register the AA manager first so that our version is the one used.
  FAM.registerPass([&] { return PB.buildDefaultAAPipeline(); });

  // Register all the basic analyses with the managers.
  PB.registerModuleAnalyses(MAM);
  PB.registerCGSCCAnalyses(CGAM);
  PB.registerFunctionAnalyses(FAM);
  PB.registerLoopAnalyses(LAM);
  PB.crossRegisterProxies(LAM, FAM, CGAM, MAM);

  ModulePassManager MPM;

  if (!CodeGenOpts.DisableLLVMPasses) {
    if (CodeGenOpts.OptimizationLevel == 0) {
      // Build a minimal pipeline based on the semantics required by Clang,
      // which is just that always inlining occurs.
      MPM.addPass(AlwaysInlinerPass());
    } else {
      // Otherwise, use the default pass pipeline. We also have to map our
      // optimization levels into one of the distinct levels used to configure
      // the pipeline.
      PassBuilder::OptimizationLevel Level = mapToLevel(CodeGenOpts);

      MPM = PB.buildPerModuleDefaultPipeline(Level);
    }
  }

  // FIXME: We still use the legacy pass manager to do code generation. We
  // create that pass manager here and use it as needed below.
  legacy::PassManager CodeGenPasses;
  bool NeedCodeGen = false;

  // Append any output we need to the pass manager.
  switch (Action) {
  case Backend_EmitNothing:
    break;

  case Backend_EmitBC:
    MPM.addPass(BitcodeWriterPass(*OS, CodeGenOpts.EmitLLVMUseLists,
                                  CodeGenOpts.EmitSummaryIndex,
                                  CodeGenOpts.EmitSummaryIndex));
    break;

  case Backend_EmitLL:
    MPM.addPass(PrintModulePass(*OS, "", CodeGenOpts.EmitLLVMUseLists));
    break;

  case Backend_EmitAssembly:
  case Backend_EmitMCNull:
  case Backend_EmitObj:
    NeedCodeGen = true;
    CodeGenPasses.add(
        createTargetTransformInfoWrapperPass(getTargetIRAnalysis()));
    if (!AddEmitPasses(CodeGenPasses, Action, *OS))
      // FIXME: Should we handle this error differently?
      return;
    break;
  }

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

  // Now that we have all of the passes ready, run them.
  {
    PrettyStackTraceString CrashInfo("Optimizer");
    MPM.run(*TheModule, MAM);
  }

  // Now if needed, run the legacy PM for codegen.
  if (NeedCodeGen) {
    PrettyStackTraceString CrashInfo("Code generation");
    CodeGenPasses.run(*TheModule);
  }
}