Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 880 deletions

diff --git a/gnu/llvm/tools/opt/opt.cpp b/gnu/llvm/tools/opt/opt.cpp
deleted file mode 100644
index a4967a234d9..00000000000
--- a/gnu/llvm/tools/opt/opt.cpp
+++ /dev/null
@@ -1,880 +0,0 @@
-//===- opt.cpp - The LLVM Modular Optimizer -------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// Optimizations may be specified an arbitrary number of times on the command
-// line, They are run in the order specified.
-//
-//===----------------------------------------------------------------------===//
-
-#include "BreakpointPrinter.h"
-#include "Debugify.h"
-#include "NewPMDriver.h"
-#include "PassPrinters.h"
-#include "llvm/ADT/Triple.h"
-#include "llvm/Analysis/CallGraph.h"
-#include "llvm/Analysis/CallGraphSCCPass.h"
-#include "llvm/Analysis/LoopPass.h"
-#include "llvm/Analysis/RegionPass.h"
-#include "llvm/Analysis/TargetLibraryInfo.h"
-#include "llvm/Analysis/TargetTransformInfo.h"
-#include "llvm/Bitcode/BitcodeWriterPass.h"
-#include "llvm/CodeGen/CommandFlags.inc"
-#include "llvm/CodeGen/TargetPassConfig.h"
-#include "llvm/Config/llvm-config.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/DebugInfo.h"
-#include "llvm/IR/IRPrintingPasses.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/LegacyPassManager.h"
-#include "llvm/IR/LegacyPassNameParser.h"
-#include "llvm/IR/Module.h"
-#include "llvm/IR/Verifier.h"
-#include "llvm/IRReader/IRReader.h"
-#include "llvm/InitializePasses.h"
-#include "llvm/LinkAllIR.h"
-#include "llvm/LinkAllPasses.h"
-#include "llvm/MC/SubtargetFeature.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/Host.h"
-#include "llvm/Support/InitLLVM.h"
-#include "llvm/Support/PluginLoader.h"
-#include "llvm/Support/SourceMgr.h"
-#include "llvm/Support/SystemUtils.h"
-#include "llvm/Support/TargetRegistry.h"
-#include "llvm/Support/TargetSelect.h"
-#include "llvm/Support/ToolOutputFile.h"
-#include "llvm/Support/YAMLTraits.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Transforms/Coroutines.h"
-#include "llvm/Transforms/IPO/AlwaysInliner.h"
-#include "llvm/Transforms/IPO/PassManagerBuilder.h"
-#include "llvm/Transforms/Utils/Cloning.h"
-#include <algorithm>
-#include <memory>
-using namespace llvm;
-using namespace opt_tool;
-
-// The OptimizationList is automatically populated with registered Passes by the
-// PassNameParser.
-//
-static cl::list<const PassInfo*, bool, PassNameParser>
-PassList(cl::desc("Optimizations available:"));
-
-// This flag specifies a textual description of the optimization pass pipeline
-// to run over the module. This flag switches opt to use the new pass manager
-// infrastructure, completely disabling all of the flags specific to the old
-// pass management.
-static cl::opt<std::string> PassPipeline(
-    "passes",
-    cl::desc("A textual description of the pass pipeline for optimizing"),
-    cl::Hidden);
-
-// Other command line options...
-//
-static cl::opt<std::string>
-InputFilename(cl::Positional, cl::desc("<input bitcode file>"),
-    cl::init("-"), cl::value_desc("filename"));
-
-static cl::opt<std::string>
-OutputFilename("o", cl::desc("Override output filename"),
-               cl::value_desc("filename"));
-
-static cl::opt<bool>
-Force("f", cl::desc("Enable binary output on terminals"));
-
-static cl::opt<bool>
-PrintEachXForm("p", cl::desc("Print module after each transformation"));
-
-static cl::opt<bool>
-NoOutput("disable-output",
-         cl::desc("Do not write result bitcode file"), cl::Hidden);
-
-static cl::opt<bool>
-OutputAssembly("S", cl::desc("Write output as LLVM assembly"));
-
-static cl::opt<bool>
-    OutputThinLTOBC("thinlto-bc",
-                    cl::desc("Write output as ThinLTO-ready bitcode"));
-
-static cl::opt<bool>
-    SplitLTOUnit("thinlto-split-lto-unit",
-                 cl::desc("Enable splitting of a ThinLTO LTOUnit"));
-
-static cl::opt<std::string> ThinLinkBitcodeFile(
-    "thin-link-bitcode-file", cl::value_desc("filename"),
-    cl::desc(
-        "A file in which to write minimized bitcode for the thin link only"));
-
-static cl::opt<bool>
-NoVerify("disable-verify", cl::desc("Do not run the verifier"), cl::Hidden);
-
-static cl::opt<bool>
-VerifyEach("verify-each", cl::desc("Verify after each transform"));
-
-static cl::opt<bool>
-    DisableDITypeMap("disable-debug-info-type-map",
-                     cl::desc("Don't use a uniquing type map for debug info"));
-
-static cl::opt<bool>
-StripDebug("strip-debug",
-           cl::desc("Strip debugger symbol info from translation unit"));
-
-static cl::opt<bool>
-    StripNamedMetadata("strip-named-metadata",
-                       cl::desc("Strip module-level named metadata"));
-
-static cl::opt<bool> DisableInline("disable-inlining",
-                                   cl::desc("Do not run the inliner pass"));
-
-static cl::opt<bool>
-DisableOptimizations("disable-opt",
-                     cl::desc("Do not run any optimization passes"));
-
-static cl::opt<bool>
-StandardLinkOpts("std-link-opts",
-                 cl::desc("Include the standard link time optimizations"));
-
-static cl::opt<bool>
-OptLevelO0("O0",
-  cl::desc("Optimization level 0. Similar to clang -O0"));
-
-static cl::opt<bool>
-OptLevelO1("O1",
-           cl::desc("Optimization level 1. Similar to clang -O1"));
-
-static cl::opt<bool>
-OptLevelO2("O2",
-           cl::desc("Optimization level 2. Similar to clang -O2"));
-
-static cl::opt<bool>
-OptLevelOs("Os",
-           cl::desc("Like -O2 with extra optimizations for size. Similar to clang -Os"));
-
-static cl::opt<bool>
-OptLevelOz("Oz",
-           cl::desc("Like -Os but reduces code size further. Similar to clang -Oz"));
-
-static cl::opt<bool>
-OptLevelO3("O3",
-           cl::desc("Optimization level 3. Similar to clang -O3"));
-
-static cl::opt<unsigned>
-CodeGenOptLevel("codegen-opt-level",
-                cl::desc("Override optimization level for codegen hooks"));
-
-static cl::opt<std::string>
-TargetTriple("mtriple", cl::desc("Override target triple for module"));
-
-static cl::opt<bool>
-UnitAtATime("funit-at-a-time",
-            cl::desc("Enable IPO. This corresponds to gcc's -funit-at-a-time"),
-            cl::init(true));
-
-static cl::opt<bool>
-DisableLoopUnrolling("disable-loop-unrolling",
-                     cl::desc("Disable loop unrolling in all relevant passes"),
-                     cl::init(false));
-static cl::opt<bool>
-DisableLoopVectorization("disable-loop-vectorization",
-                     cl::desc("Disable the loop vectorization pass"),
-                     cl::init(false));
-
-static cl::opt<bool>
-DisableSLPVectorization("disable-slp-vectorization",
-                        cl::desc("Disable the slp vectorization pass"),
-                        cl::init(false));
-
-static cl::opt<bool> EmitSummaryIndex("module-summary",
-                                      cl::desc("Emit module summary index"),
-                                      cl::init(false));
-
-static cl::opt<bool> EmitModuleHash("module-hash", cl::desc("Emit module hash"),
-                                    cl::init(false));
-
-static cl::opt<bool>
-DisableSimplifyLibCalls("disable-simplify-libcalls",
-                        cl::desc("Disable simplify-libcalls"));
-
-static cl::opt<bool>
-Quiet("q", cl::desc("Obsolete option"), cl::Hidden);
-
-static cl::alias
-QuietA("quiet", cl::desc("Alias for -q"), cl::aliasopt(Quiet));
-
-static cl::opt<bool>
-AnalyzeOnly("analyze", cl::desc("Only perform analysis, no optimization"));
-
-static cl::opt<bool> EnableDebugify(
-    "enable-debugify",
-    cl::desc(
-        "Start the pipeline with debugify and end it with check-debugify"));
-
-static cl::opt<bool> DebugifyEach(
-    "debugify-each",
-    cl::desc(
-        "Start each pass with debugify and end it with check-debugify"));
-
-static cl::opt<std::string>
-    DebugifyExport("debugify-export",
-                   cl::desc("Export per-pass debugify statistics to this file"),
-                   cl::value_desc("filename"), cl::init(""));
-
-static cl::opt<bool>
-PrintBreakpoints("print-breakpoints-for-testing",
-                 cl::desc("Print select breakpoints location for testing"));
-
-static cl::opt<std::string> ClDataLayout("data-layout",
-                                         cl::desc("data layout string to use"),
-                                         cl::value_desc("layout-string"),
-                                         cl::init(""));
-
-static cl::opt<bool> PreserveBitcodeUseListOrder(
-    "preserve-bc-uselistorder",
-    cl::desc("Preserve use-list order when writing LLVM bitcode."),
-    cl::init(true), cl::Hidden);
-
-static cl::opt<bool> PreserveAssemblyUseListOrder(
-    "preserve-ll-uselistorder",
-    cl::desc("Preserve use-list order when writing LLVM assembly."),
-    cl::init(false), cl::Hidden);
-
-static cl::opt<bool>
-    RunTwice("run-twice",
-             cl::desc("Run all passes twice, re-using the same pass manager."),
-             cl::init(false), cl::Hidden);
-
-static cl::opt<bool> DiscardValueNames(
-    "discard-value-names",
-    cl::desc("Discard names from Value (other than GlobalValue)."),
-    cl::init(false), cl::Hidden);
-
-static cl::opt<bool> Coroutines(
-  "enable-coroutines",
-  cl::desc("Enable coroutine passes."),
-  cl::init(false), cl::Hidden);
-
-static cl::opt<bool> PassRemarksWithHotness(
-    "pass-remarks-with-hotness",
-    cl::desc("With PGO, include profile count in optimization remarks"),
-    cl::Hidden);
-
-static cl::opt<unsigned> PassRemarksHotnessThreshold(
-    "pass-remarks-hotness-threshold",
-    cl::desc("Minimum profile count required for an optimization remark to be output"),
-    cl::Hidden);
-
-static cl::opt<std::string>
-    RemarksFilename("pass-remarks-output",
-                    cl::desc("YAML output filename for pass remarks"),
-                    cl::value_desc("filename"));
-
-class OptCustomPassManager : public legacy::PassManager {
-  DebugifyStatsMap DIStatsMap;
-
-public:
-  using super = legacy::PassManager;
-
-  void add(Pass *P) override {
-    // Wrap each pass with (-check)-debugify passes if requested, making
-    // exceptions for passes which shouldn't see -debugify instrumentation.
-    bool WrapWithDebugify = DebugifyEach && !P->getAsImmutablePass() &&
-                            !isIRPrintingPass(P) && !isBitcodeWriterPass(P);
-    if (!WrapWithDebugify) {
-      super::add(P);
-      return;
-    }
-
-    // Apply -debugify/-check-debugify before/after each pass and collect
-    // debug info loss statistics.
-    PassKind Kind = P->getPassKind();
-    StringRef Name = P->getPassName();
-
-    // TODO: Implement Debugify for BasicBlockPass, LoopPass.
-    switch (Kind) {
-      case PT_Function:
-        super::add(createDebugifyFunctionPass());
-        super::add(P);
-        super::add(createCheckDebugifyFunctionPass(true, Name, &DIStatsMap));
-        break;
-      case PT_Module:
-        super::add(createDebugifyModulePass());
-        super::add(P);
-        super::add(createCheckDebugifyModulePass(true, Name, &DIStatsMap));
-        break;
-      default:
-        super::add(P);
-        break;
-    }
-  }
-
-  const DebugifyStatsMap &getDebugifyStatsMap() const { return DIStatsMap; }
-};
-
-static inline void addPass(legacy::PassManagerBase &PM, Pass *P) {
-  // Add the pass to the pass manager...
-  PM.add(P);
-
-  // If we are verifying all of the intermediate steps, add the verifier...
-  if (VerifyEach)
-    PM.add(createVerifierPass());
-}
-
-/// This routine adds optimization passes based on selected optimization level,
-/// OptLevel.
-///
-/// OptLevel - Optimization Level
-static void AddOptimizationPasses(legacy::PassManagerBase &MPM,
-                                  legacy::FunctionPassManager &FPM,
-                                  TargetMachine *TM, unsigned OptLevel,
-                                  unsigned SizeLevel) {
-  if (!NoVerify || VerifyEach)
-    FPM.add(createVerifierPass()); // Verify that input is correct
-
-  PassManagerBuilder Builder;
-  Builder.OptLevel = OptLevel;
-  Builder.SizeLevel = SizeLevel;
-
-  if (DisableInline) {
-    // No inlining pass
-  } else if (OptLevel > 1) {
-    Builder.Inliner = createFunctionInliningPass(OptLevel, SizeLevel, false);
-  } else {
-    Builder.Inliner = createAlwaysInlinerLegacyPass();
-  }
-  Builder.DisableUnitAtATime = !UnitAtATime;
-  Builder.DisableUnrollLoops = (DisableLoopUnrolling.getNumOccurrences() > 0) ?
-                               DisableLoopUnrolling : OptLevel == 0;
-
-  // This is final, unless there is a #pragma vectorize enable
-  if (DisableLoopVectorization)
-    Builder.LoopVectorize = false;
-  // If option wasn't forced via cmd line (-vectorize-loops, -loop-vectorize)
-  else if (!Builder.LoopVectorize)
-    Builder.LoopVectorize = OptLevel > 1 && SizeLevel < 2;
-
-  // When #pragma vectorize is on for SLP, do the same as above
-  Builder.SLPVectorize =
-      DisableSLPVectorization ? false : OptLevel > 1 && SizeLevel < 2;
-
-  if (TM)
-    TM->adjustPassManager(Builder);
-
-  if (Coroutines)
-    addCoroutinePassesToExtensionPoints(Builder);
-
-  Builder.populateFunctionPassManager(FPM);
-  Builder.populateModulePassManager(MPM);
-}
-
-static void AddStandardLinkPasses(legacy::PassManagerBase &PM) {
-  PassManagerBuilder Builder;
-  Builder.VerifyInput = true;
-  if (DisableOptimizations)
-    Builder.OptLevel = 0;
-
-  if (!DisableInline)
-    Builder.Inliner = createFunctionInliningPass();
-  Builder.populateLTOPassManager(PM);
-}
-
-//===----------------------------------------------------------------------===//
-// CodeGen-related helper functions.
-//
-
-static CodeGenOpt::Level GetCodeGenOptLevel() {
-  if (CodeGenOptLevel.getNumOccurrences())
-    return static_cast<CodeGenOpt::Level>(unsigned(CodeGenOptLevel));
-  if (OptLevelO1)
-    return CodeGenOpt::Less;
-  if (OptLevelO2)
-    return CodeGenOpt::Default;
-  if (OptLevelO3)
-    return CodeGenOpt::Aggressive;
-  return CodeGenOpt::None;
-}
-
-// Returns the TargetMachine instance or zero if no triple is provided.
-static TargetMachine* GetTargetMachine(Triple TheTriple, StringRef CPUStr,
-                                       StringRef FeaturesStr,
-                                       const TargetOptions &Options) {
-  std::string Error;
-  const Target *TheTarget = TargetRegistry::lookupTarget(MArch, TheTriple,
-                                                         Error);
-  // Some modules don't specify a triple, and this is okay.
-  if (!TheTarget) {
-    return nullptr;
-  }
-
-  return TheTarget->createTargetMachine(TheTriple.getTriple(), CPUStr,
-                                        FeaturesStr, Options, getRelocModel(),
-                                        getCodeModel(), GetCodeGenOptLevel());
-}
-
-#ifdef LINK_POLLY_INTO_TOOLS
-namespace polly {
-void initializePollyPasses(llvm::PassRegistry &Registry);
-}
-#endif
-
-//===----------------------------------------------------------------------===//
-// main for opt
-//
-int main(int argc, char **argv) {
-  InitLLVM X(argc, argv);
-
-  // Enable debug stream buffering.
-  EnableDebugBuffering = true;
-
-  LLVMContext Context;
-
-  InitializeAllTargets();
-  InitializeAllTargetMCs();
-  InitializeAllAsmPrinters();
-  InitializeAllAsmParsers();
-
-  // Initialize passes
-  PassRegistry &Registry = *PassRegistry::getPassRegistry();
-  initializeCore(Registry);
-  initializeCoroutines(Registry);
-  initializeScalarOpts(Registry);
-  initializeObjCARCOpts(Registry);
-  initializeVectorization(Registry);
-  initializeIPO(Registry);
-  initializeAnalysis(Registry);
-  initializeTransformUtils(Registry);
-  initializeInstCombine(Registry);
-  initializeAggressiveInstCombine(Registry);
-  initializeInstrumentation(Registry);
-  initializeTarget(Registry);
-  // For codegen passes, only passes that do IR to IR transformation are
-  // supported.
-  initializeExpandMemCmpPassPass(Registry);
-  initializeScalarizeMaskedMemIntrinPass(Registry);
-  initializeCodeGenPreparePass(Registry);
-  initializeAtomicExpandPass(Registry);
-  initializeRewriteSymbolsLegacyPassPass(Registry);
-  initializeWinEHPreparePass(Registry);
-  initializeDwarfEHPreparePass(Registry);
-  initializeSafeStackLegacyPassPass(Registry);
-  initializeSjLjEHPreparePass(Registry);
-  initializePreISelIntrinsicLoweringLegacyPassPass(Registry);
-  initializeGlobalMergePass(Registry);
-  initializeIndirectBrExpandPassPass(Registry);
-  initializeInterleavedLoadCombinePass(Registry);
-  initializeInterleavedAccessPass(Registry);
-  initializeEntryExitInstrumenterPass(Registry);
-  initializePostInlineEntryExitInstrumenterPass(Registry);
-  initializeUnreachableBlockElimLegacyPassPass(Registry);
-  initializeExpandReductionsPass(Registry);
-  initializeWasmEHPreparePass(Registry);
-  initializeWriteBitcodePassPass(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;
-
-  Context.setDiscardValueNames(DiscardValueNames);
-  if (!DisableDITypeMap)
-    Context.enableDebugTypeODRUniquing();
-
-  if (PassRemarksWithHotness)
-    Context.setDiagnosticsHotnessRequested(true);
-
-  if (PassRemarksHotnessThreshold)
-    Context.setDiagnosticsHotnessThreshold(PassRemarksHotnessThreshold);
-
-  std::unique_ptr<ToolOutputFile> OptRemarkFile;
-  if (RemarksFilename != "") {
-    std::error_code EC;
-    OptRemarkFile =
-        llvm::make_unique<ToolOutputFile>(RemarksFilename, EC, sys::fs::F_None);
-    if (EC) {
-      errs() << EC.message() << '\n';
-      return 1;
-    }
-    Context.setDiagnosticsOutputFile(
-        llvm::make_unique<yaml::Output>(OptRemarkFile->os()));
-  }
-
-  // Load the input module...
-  std::unique_ptr<Module> M =
-      parseIRFile(InputFilename, Err, Context, !NoVerify, ClDataLayout);
-
-  if (!M) {
-    Err.print(argv[0], errs());
-    return 1;
-  }
-
-  // Strip debug info before running the verifier.
-  if (StripDebug)
-    StripDebugInfo(*M);
-
-  // Erase module-level named metadata, if requested.
-  if (StripNamedMetadata) {
-    while (!M->named_metadata_empty()) {
-      NamedMDNode *NMD = &*M->named_metadata_begin();
-      M->eraseNamedMetadata(NMD);
-    }
-  }
-
-  // If we are supposed to override the target triple or data layout, do so now.
-  if (!TargetTriple.empty())
-    M->setTargetTriple(Triple::normalize(TargetTriple));
-
-  // Immediately run the verifier to catch any problems before starting up the
-  // pass pipelines.  Otherwise we can crash on broken code during
-  // doInitialization().
-  if (!NoVerify && verifyModule(*M, &errs())) {
-    errs() << argv[0] << ": " << InputFilename
-           << ": error: input module is broken!\n";
-    return 1;
-  }
-
-  // Figure out what stream we are supposed to write to...
-  std::unique_ptr<ToolOutputFile> Out;
-  std::unique_ptr<ToolOutputFile> ThinLinkOut;
-  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 ToolOutputFile(OutputFilename, EC, sys::fs::F_None));
-    if (EC) {
-      errs() << EC.message() << '\n';
-      return 1;
-    }
-
-    if (!ThinLinkBitcodeFile.empty()) {
-      ThinLinkOut.reset(
-          new ToolOutputFile(ThinLinkBitcodeFile, EC, sys::fs::F_None));
-      if (EC) {
-        errs() << EC.message() << '\n';
-        return 1;
-      }
-    }
-  }
-
-  Triple ModuleTriple(M->getTargetTriple());
-  std::string CPUStr, FeaturesStr;
-  TargetMachine *Machine = nullptr;
-  const TargetOptions Options = InitTargetOptionsFromCodeGenFlags();
-
-  if (ModuleTriple.getArch()) {
-    CPUStr = getCPUStr();
-    FeaturesStr = getFeaturesStr();
-    Machine = GetTargetMachine(ModuleTriple, CPUStr, FeaturesStr, Options);
-  }
-
-  std::unique_ptr<TargetMachine> TM(Machine);
-
-  // Override function attributes based on CPUStr, FeaturesStr, and command line
-  // flags.
-  setFunctionAttributes(CPUStr, FeaturesStr, *M);
-
-  // 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 (OutputThinLTOBC)
-    M->addModuleFlag(Module::Error, "EnableSplitLTOUnit", SplitLTOUnit);
-
-  if (PassPipeline.getNumOccurrences() > 0) {
-    OutputKind OK = OK_NoOutput;
-    if (!NoOutput)
-      OK = OutputAssembly
-               ? OK_OutputAssembly
-               : (OutputThinLTOBC ? OK_OutputThinLTOBitcode : 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], *M, TM.get(), Out.get(), ThinLinkOut.get(),
-                           OptRemarkFile.get(), PassPipeline, OK, VK,
-                           PreserveAssemblyUseListOrder,
-                           PreserveBitcodeUseListOrder, EmitSummaryIndex,
-                           EmitModuleHash, EnableDebugify)
-               ? 0
-               : 1;
-  }
-
-  // Create a PassManager to hold and optimize the collection of passes we are
-  // about to build.
-  OptCustomPassManager Passes;
-  bool AddOneTimeDebugifyPasses = EnableDebugify && !DebugifyEach;
-
-  // Add an appropriate TargetLibraryInfo pass for the module's triple.
-  TargetLibraryInfoImpl TLII(ModuleTriple);
-
-  // The -disable-simplify-libcalls flag actually disables all builtin optzns.
-  if (DisableSimplifyLibCalls)
-    TLII.disableAllFunctions();
-  Passes.add(new TargetLibraryInfoWrapperPass(TLII));
-
-  // Add internal analysis passes from the target machine.
-  Passes.add(createTargetTransformInfoWrapperPass(TM ? TM->getTargetIRAnalysis()
-                                                     : TargetIRAnalysis()));
-
-  if (AddOneTimeDebugifyPasses)
-    Passes.add(createDebugifyModulePass());
-
-  std::unique_ptr<legacy::FunctionPassManager> FPasses;
-  if (OptLevelO0 || OptLevelO1 || OptLevelO2 || OptLevelOs || OptLevelOz ||
-      OptLevelO3) {
-    FPasses.reset(new legacy::FunctionPassManager(M.get()));
-    FPasses->add(createTargetTransformInfoWrapperPass(
-        TM ? TM->getTargetIRAnalysis() : TargetIRAnalysis()));
-  }
-
-  if (PrintBreakpoints) {
-    // Default to standard output.
-    if (!Out) {
-      if (OutputFilename.empty())
-        OutputFilename = "-";
-
-      std::error_code EC;
-      Out = llvm::make_unique<ToolOutputFile>(OutputFilename, EC,
-                                              sys::fs::F_None);
-      if (EC) {
-        errs() << EC.message() << '\n';
-        return 1;
-      }
-    }
-    Passes.add(createBreakpointPrinter(Out->os()));
-    NoOutput = true;
-  }
-
-  if (TM) {
-    // FIXME: We should dyn_cast this when supported.
-    auto &LTM = static_cast<LLVMTargetMachine &>(*TM);
-    Pass *TPC = LTM.createPassConfig(Passes);
-    Passes.add(TPC);
-  }
-
-  // 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 (OptLevelO0 && OptLevelO0.getPosition() < PassList.getPosition(i)) {
-      AddOptimizationPasses(Passes, *FPasses, TM.get(), 0, 0);
-      OptLevelO0 = false;
-    }
-
-    if (OptLevelO1 && OptLevelO1.getPosition() < PassList.getPosition(i)) {
-      AddOptimizationPasses(Passes, *FPasses, TM.get(), 1, 0);
-      OptLevelO1 = false;
-    }
-
-    if (OptLevelO2 && OptLevelO2.getPosition() < PassList.getPosition(i)) {
-      AddOptimizationPasses(Passes, *FPasses, TM.get(), 2, 0);
-      OptLevelO2 = false;
-    }
-
-    if (OptLevelOs && OptLevelOs.getPosition() < PassList.getPosition(i)) {
-      AddOptimizationPasses(Passes, *FPasses, TM.get(), 2, 1);
-      OptLevelOs = false;
-    }
-
-    if (OptLevelOz && OptLevelOz.getPosition() < PassList.getPosition(i)) {
-      AddOptimizationPasses(Passes, *FPasses, TM.get(), 2, 2);
-      OptLevelOz = false;
-    }
-
-    if (OptLevelO3 && OptLevelO3.getPosition() < PassList.getPosition(i)) {
-      AddOptimizationPasses(Passes, *FPasses, TM.get(), 3, 0);
-      OptLevelO3 = false;
-    }
-
-    const PassInfo *PassInf = PassList[i];
-    Pass *P = nullptr;
-    if (PassInf->getNormalCtor())
-      P = PassInf->getNormalCtor()();
-    else
-      errs() << argv[0] << ": cannot create pass: "
-             << PassInf->getPassName() << "\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(), "", PreserveAssemblyUseListOrder));
-  }
-
-  if (StandardLinkOpts) {
-    AddStandardLinkPasses(Passes);
-    StandardLinkOpts = false;
-  }
-
-  if (OptLevelO0)
-    AddOptimizationPasses(Passes, *FPasses, TM.get(), 0, 0);
-
-  if (OptLevelO1)
-    AddOptimizationPasses(Passes, *FPasses, TM.get(), 1, 0);
-
-  if (OptLevelO2)
-    AddOptimizationPasses(Passes, *FPasses, TM.get(), 2, 0);
-
-  if (OptLevelOs)
-    AddOptimizationPasses(Passes, *FPasses, TM.get(), 2, 1);
-
-  if (OptLevelOz)
-    AddOptimizationPasses(Passes, *FPasses, TM.get(), 2, 2);
-
-  if (OptLevelO3)
-    AddOptimizationPasses(Passes, *FPasses, TM.get(), 3, 0);
-
-  if (FPasses) {
-    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());
-
-  if (AddOneTimeDebugifyPasses)
-    Passes.add(createCheckDebugifyModulePass(false));
-
-  // In run twice mode, we want to make sure the output is bit-by-bit
-  // equivalent if we run the pass manager again, so setup two buffers and
-  // a stream to write to them. Note that llc does something similar and it
-  // may be worth to abstract this out in the future.
-  SmallVector<char, 0> Buffer;
-  SmallVector<char, 0> FirstRunBuffer;
-  std::unique_ptr<raw_svector_ostream> BOS;
-  raw_ostream *OS = nullptr;
-
-  // Write bitcode or assembly to the output as the last step...
-  if (!NoOutput && !AnalyzeOnly) {
-    assert(Out);
-    OS = &Out->os();
-    if (RunTwice) {
-      BOS = make_unique<raw_svector_ostream>(Buffer);
-      OS = BOS.get();
-    }
-    if (OutputAssembly) {
-      if (EmitSummaryIndex)
-        report_fatal_error("Text output is incompatible with -module-summary");
-      if (EmitModuleHash)
-        report_fatal_error("Text output is incompatible with -module-hash");
-      Passes.add(createPrintModulePass(*OS, "", PreserveAssemblyUseListOrder));
-    } else if (OutputThinLTOBC)
-      Passes.add(createWriteThinLTOBitcodePass(
-          *OS, ThinLinkOut ? &ThinLinkOut->os() : nullptr));
-    else
-      Passes.add(createBitcodeWriterPass(*OS, PreserveBitcodeUseListOrder,
-                                         EmitSummaryIndex, EmitModuleHash));
-  }
-
-  // Before executing passes, print the final values of the LLVM options.
-  cl::PrintOptionValues();
-
-  if (!RunTwice) {
-    // Now that we have all of the passes ready, run them.
-    Passes.run(*M);
-  } else {
-    // If requested, run all passes twice with the same pass manager to catch
-    // bugs caused by persistent state in the passes.
-    std::unique_ptr<Module> M2(CloneModule(*M));
-    // Run all passes on the original module first, so the second run processes
-    // the clone to catch CloneModule bugs.
-    Passes.run(*M);
-    FirstRunBuffer = Buffer;
-    Buffer.clear();
-
-    Passes.run(*M2);
-
-    // Compare the two outputs and make sure they're the same
-    assert(Out);
-    if (Buffer.size() != FirstRunBuffer.size() ||
-        (memcmp(Buffer.data(), FirstRunBuffer.data(), Buffer.size()) != 0)) {
-      errs()
-          << "Running the pass manager twice changed the output.\n"
-             "Writing the result of the second run to the specified output.\n"
-             "To generate the one-run comparison binary, just run without\n"
-             "the compile-twice option\n";
-      Out->os() << BOS->str();
-      Out->keep();
-      if (OptRemarkFile)
-        OptRemarkFile->keep();
-      return 1;
-    }
-    Out->os() << BOS->str();
-  }
-
-  if (DebugifyEach && !DebugifyExport.empty())
-    exportDebugifyStats(DebugifyExport, Passes.getDebugifyStatsMap());
-
-  // Declare success.
-  if (!NoOutput || PrintBreakpoints)
-    Out->keep();
-
-  if (OptRemarkFile)
-    OptRemarkFile->keep();
-
-  if (ThinLinkOut)
-    ThinLinkOut->keep();
-
-  return 0;
-}