Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 2073 deletions

diff --git a/gnu/llvm/lib/Passes/PassBuilder.cpp b/gnu/llvm/lib/Passes/PassBuilder.cpp
deleted file mode 100644
index 5ec94ea6f40..00000000000
--- a/gnu/llvm/lib/Passes/PassBuilder.cpp
+++ /dev/null
@@ -1,2073 +0,0 @@
-//===- Parsing, selection, and construction of pass pipelines -------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-/// \file
-///
-/// This file provides the implementation of the PassBuilder based on our
-/// static pass registry as well as related functionality. It also provides
-/// helpers to aid in analyzing, debugging, and testing passes and pass
-/// pipelines.
-///
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Passes/PassBuilder.h"
-#include "llvm/ADT/StringSwitch.h"
-#include "llvm/Analysis/AliasAnalysis.h"
-#include "llvm/Analysis/AliasAnalysisEvaluator.h"
-#include "llvm/Analysis/AssumptionCache.h"
-#include "llvm/Analysis/BasicAliasAnalysis.h"
-#include "llvm/Analysis/BlockFrequencyInfo.h"
-#include "llvm/Analysis/BranchProbabilityInfo.h"
-#include "llvm/Analysis/CFGPrinter.h"
-#include "llvm/Analysis/CFLAndersAliasAnalysis.h"
-#include "llvm/Analysis/CFLSteensAliasAnalysis.h"
-#include "llvm/Analysis/CGSCCPassManager.h"
-#include "llvm/Analysis/CallGraph.h"
-#include "llvm/Analysis/DemandedBits.h"
-#include "llvm/Analysis/DependenceAnalysis.h"
-#include "llvm/Analysis/DominanceFrontier.h"
-#include "llvm/Analysis/GlobalsModRef.h"
-#include "llvm/Analysis/IVUsers.h"
-#include "llvm/Analysis/LazyCallGraph.h"
-#include "llvm/Analysis/LazyValueInfo.h"
-#include "llvm/Analysis/LoopAccessAnalysis.h"
-#include "llvm/Analysis/LoopInfo.h"
-#include "llvm/Analysis/MemoryDependenceAnalysis.h"
-#include "llvm/Analysis/MemorySSA.h"
-#include "llvm/Analysis/ModuleSummaryAnalysis.h"
-#include "llvm/Analysis/OptimizationRemarkEmitter.h"
-#include "llvm/Analysis/PhiValues.h"
-#include "llvm/Analysis/PostDominators.h"
-#include "llvm/Analysis/ProfileSummaryInfo.h"
-#include "llvm/Analysis/RegionInfo.h"
-#include "llvm/Analysis/ScalarEvolution.h"
-#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
-#include "llvm/Analysis/ScopedNoAliasAA.h"
-#include "llvm/Analysis/StackSafetyAnalysis.h"
-#include "llvm/Analysis/TargetLibraryInfo.h"
-#include "llvm/Analysis/TargetTransformInfo.h"
-#include "llvm/Analysis/TypeBasedAliasAnalysis.h"
-#include "llvm/CodeGen/PreISelIntrinsicLowering.h"
-#include "llvm/CodeGen/UnreachableBlockElim.h"
-#include "llvm/IR/Dominators.h"
-#include "llvm/IR/IRPrintingPasses.h"
-#include "llvm/IR/PassManager.h"
-#include "llvm/IR/Verifier.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/FormatVariadic.h"
-#include "llvm/Support/Regex.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Transforms/AggressiveInstCombine/AggressiveInstCombine.h"
-#include "llvm/Transforms/IPO/AlwaysInliner.h"
-#include "llvm/Transforms/IPO/ArgumentPromotion.h"
-#include "llvm/Transforms/IPO/CalledValuePropagation.h"
-#include "llvm/Transforms/IPO/ConstantMerge.h"
-#include "llvm/Transforms/IPO/CrossDSOCFI.h"
-#include "llvm/Transforms/IPO/DeadArgumentElimination.h"
-#include "llvm/Transforms/IPO/ElimAvailExtern.h"
-#include "llvm/Transforms/IPO/ForceFunctionAttrs.h"
-#include "llvm/Transforms/IPO/FunctionAttrs.h"
-#include "llvm/Transforms/IPO/FunctionImport.h"
-#include "llvm/Transforms/IPO/GlobalDCE.h"
-#include "llvm/Transforms/IPO/GlobalOpt.h"
-#include "llvm/Transforms/IPO/GlobalSplit.h"
-#include "llvm/Transforms/IPO/HotColdSplitting.h"
-#include "llvm/Transforms/IPO/InferFunctionAttrs.h"
-#include "llvm/Transforms/IPO/Inliner.h"
-#include "llvm/Transforms/IPO/Internalize.h"
-#include "llvm/Transforms/IPO/LowerTypeTests.h"
-#include "llvm/Transforms/IPO/PartialInlining.h"
-#include "llvm/Transforms/IPO/SCCP.h"
-#include "llvm/Transforms/IPO/SampleProfile.h"
-#include "llvm/Transforms/IPO/StripDeadPrototypes.h"
-#include "llvm/Transforms/IPO/SyntheticCountsPropagation.h"
-#include "llvm/Transforms/IPO/WholeProgramDevirt.h"
-#include "llvm/Transforms/InstCombine/InstCombine.h"
-#include "llvm/Transforms/Instrumentation.h"
-#include "llvm/Transforms/Instrumentation/BoundsChecking.h"
-#include "llvm/Transforms/Instrumentation/CGProfile.h"
-#include "llvm/Transforms/Instrumentation/ControlHeightReduction.h"
-#include "llvm/Transforms/Instrumentation/GCOVProfiler.h"
-#include "llvm/Transforms/Instrumentation/InstrProfiling.h"
-#include "llvm/Transforms/Instrumentation/MemorySanitizer.h"
-#include "llvm/Transforms/Instrumentation/ThreadSanitizer.h"
-#include "llvm/Transforms/Instrumentation/PGOInstrumentation.h"
-#include "llvm/Transforms/Scalar/ADCE.h"
-#include "llvm/Transforms/Scalar/AlignmentFromAssumptions.h"
-#include "llvm/Transforms/Scalar/BDCE.h"
-#include "llvm/Transforms/Scalar/CallSiteSplitting.h"
-#include "llvm/Transforms/Scalar/ConstantHoisting.h"
-#include "llvm/Transforms/Scalar/CorrelatedValuePropagation.h"
-#include "llvm/Transforms/Scalar/DCE.h"
-#include "llvm/Transforms/Scalar/DeadStoreElimination.h"
-#include "llvm/Transforms/Scalar/DivRemPairs.h"
-#include "llvm/Transforms/Scalar/EarlyCSE.h"
-#include "llvm/Transforms/Scalar/Float2Int.h"
-#include "llvm/Transforms/Scalar/GVN.h"
-#include "llvm/Transforms/Scalar/GuardWidening.h"
-#include "llvm/Transforms/Scalar/IVUsersPrinter.h"
-#include "llvm/Transforms/Scalar/IndVarSimplify.h"
-#include "llvm/Transforms/Scalar/InductiveRangeCheckElimination.h"
-#include "llvm/Transforms/Scalar/InstSimplifyPass.h"
-#include "llvm/Transforms/Scalar/JumpThreading.h"
-#include "llvm/Transforms/Scalar/LICM.h"
-#include "llvm/Transforms/Scalar/LoopAccessAnalysisPrinter.h"
-#include "llvm/Transforms/Scalar/LoopDataPrefetch.h"
-#include "llvm/Transforms/Scalar/LoopDeletion.h"
-#include "llvm/Transforms/Scalar/LoopDistribute.h"
-#include "llvm/Transforms/Scalar/LoopIdiomRecognize.h"
-#include "llvm/Transforms/Scalar/LoopInstSimplify.h"
-#include "llvm/Transforms/Scalar/LoopLoadElimination.h"
-#include "llvm/Transforms/Scalar/LoopPassManager.h"
-#include "llvm/Transforms/Scalar/LoopPredication.h"
-#include "llvm/Transforms/Scalar/LoopRotation.h"
-#include "llvm/Transforms/Scalar/LoopSimplifyCFG.h"
-#include "llvm/Transforms/Scalar/LoopSink.h"
-#include "llvm/Transforms/Scalar/LoopStrengthReduce.h"
-#include "llvm/Transforms/Scalar/LoopUnrollAndJamPass.h"
-#include "llvm/Transforms/Scalar/LoopUnrollPass.h"
-#include "llvm/Transforms/Scalar/LowerAtomic.h"
-#include "llvm/Transforms/Scalar/LowerExpectIntrinsic.h"
-#include "llvm/Transforms/Scalar/LowerGuardIntrinsic.h"
-#include "llvm/Transforms/Scalar/MakeGuardsExplicit.h"
-#include "llvm/Transforms/Scalar/MemCpyOptimizer.h"
-#include "llvm/Transforms/Scalar/MergedLoadStoreMotion.h"
-#include "llvm/Transforms/Scalar/NaryReassociate.h"
-#include "llvm/Transforms/Scalar/NewGVN.h"
-#include "llvm/Transforms/Scalar/PartiallyInlineLibCalls.h"
-#include "llvm/Transforms/Scalar/Reassociate.h"
-#include "llvm/Transforms/Scalar/RewriteStatepointsForGC.h"
-#include "llvm/Transforms/Scalar/SCCP.h"
-#include "llvm/Transforms/Scalar/SROA.h"
-#include "llvm/Transforms/Scalar/Scalarizer.h"
-#include "llvm/Transforms/Scalar/SimpleLoopUnswitch.h"
-#include "llvm/Transforms/Scalar/SimplifyCFG.h"
-#include "llvm/Transforms/Scalar/Sink.h"
-#include "llvm/Transforms/Scalar/SpeculateAroundPHIs.h"
-#include "llvm/Transforms/Scalar/SpeculativeExecution.h"
-#include "llvm/Transforms/Scalar/TailRecursionElimination.h"
-#include "llvm/Transforms/Scalar/WarnMissedTransforms.h"
-#include "llvm/Transforms/Utils/AddDiscriminators.h"
-#include "llvm/Transforms/Utils/BreakCriticalEdges.h"
-#include "llvm/Transforms/Utils/CanonicalizeAliases.h"
-#include "llvm/Transforms/Utils/EntryExitInstrumenter.h"
-#include "llvm/Transforms/Utils/LCSSA.h"
-#include "llvm/Transforms/Utils/LibCallsShrinkWrap.h"
-#include "llvm/Transforms/Utils/LoopSimplify.h"
-#include "llvm/Transforms/Utils/LowerInvoke.h"
-#include "llvm/Transforms/Utils/Mem2Reg.h"
-#include "llvm/Transforms/Utils/NameAnonGlobals.h"
-#include "llvm/Transforms/Utils/SymbolRewriter.h"
-#include "llvm/Transforms/Vectorize/LoadStoreVectorizer.h"
-#include "llvm/Transforms/Vectorize/LoopVectorize.h"
-#include "llvm/Transforms/Vectorize/SLPVectorizer.h"
-
-using namespace llvm;
-
-static cl::opt<unsigned> MaxDevirtIterations("pm-max-devirt-iterations",
-                                             cl::ReallyHidden, cl::init(4));
-static cl::opt<bool>
-    RunPartialInlining("enable-npm-partial-inlining", cl::init(false),
-                       cl::Hidden, cl::ZeroOrMore,
-                       cl::desc("Run Partial inlinining pass"));
-
-static cl::opt<bool>
-    RunNewGVN("enable-npm-newgvn", cl::init(false),
-              cl::Hidden, cl::ZeroOrMore,
-              cl::desc("Run NewGVN instead of GVN"));
-
-static cl::opt<bool> EnableEarlyCSEMemSSA(
-    "enable-npm-earlycse-memssa", cl::init(true), cl::Hidden,
-    cl::desc("Enable the EarlyCSE w/ MemorySSA pass for the new PM (default = on)"));
-
-static cl::opt<bool> EnableGVNHoist(
-    "enable-npm-gvn-hoist", cl::init(false), cl::Hidden,
-    cl::desc("Enable the GVN hoisting pass for the new PM (default = off)"));
-
-static cl::opt<bool> EnableGVNSink(
-    "enable-npm-gvn-sink", cl::init(false), cl::Hidden,
-    cl::desc("Enable the GVN hoisting pass for the new PM (default = off)"));
-
-static cl::opt<bool> EnableUnrollAndJam(
-    "enable-npm-unroll-and-jam", cl::init(false), cl::Hidden,
-    cl::desc("Enable the Unroll and Jam pass for the new PM (default = off)"));
-
-static cl::opt<bool> EnableSyntheticCounts(
-    "enable-npm-synthetic-counts", cl::init(false), cl::Hidden, cl::ZeroOrMore,
-    cl::desc("Run synthetic function entry count generation "
-             "pass"));
-
-static Regex DefaultAliasRegex(
-    "^(default|thinlto-pre-link|thinlto|lto-pre-link|lto)<(O[0123sz])>$");
-
-static cl::opt<bool>
-    EnableCHR("enable-chr-npm", cl::init(true), cl::Hidden,
-              cl::desc("Enable control height reduction optimization (CHR)"));
-
-extern cl::opt<bool> EnableHotColdSplit;
-
-static bool isOptimizingForSize(PassBuilder::OptimizationLevel Level) {
-  switch (Level) {
-  case PassBuilder::O0:
-  case PassBuilder::O1:
-  case PassBuilder::O2:
-  case PassBuilder::O3:
-    return false;
-
-  case PassBuilder::Os:
-  case PassBuilder::Oz:
-    return true;
-  }
-  llvm_unreachable("Invalid optimization level!");
-}
-
-namespace {
-
-/// No-op module pass which does nothing.
-struct NoOpModulePass {
-  PreservedAnalyses run(Module &M, ModuleAnalysisManager &) {
-    return PreservedAnalyses::all();
-  }
-  static StringRef name() { return "NoOpModulePass"; }
-};
-
-/// No-op module analysis.
-class NoOpModuleAnalysis : public AnalysisInfoMixin<NoOpModuleAnalysis> {
-  friend AnalysisInfoMixin<NoOpModuleAnalysis>;
-  static AnalysisKey Key;
-
-public:
-  struct Result {};
-  Result run(Module &, ModuleAnalysisManager &) { return Result(); }
-  static StringRef name() { return "NoOpModuleAnalysis"; }
-};
-
-/// No-op CGSCC pass which does nothing.
-struct NoOpCGSCCPass {
-  PreservedAnalyses run(LazyCallGraph::SCC &C, CGSCCAnalysisManager &,
-                        LazyCallGraph &, CGSCCUpdateResult &UR) {
-    return PreservedAnalyses::all();
-  }
-  static StringRef name() { return "NoOpCGSCCPass"; }
-};
-
-/// No-op CGSCC analysis.
-class NoOpCGSCCAnalysis : public AnalysisInfoMixin<NoOpCGSCCAnalysis> {
-  friend AnalysisInfoMixin<NoOpCGSCCAnalysis>;
-  static AnalysisKey Key;
-
-public:
-  struct Result {};
-  Result run(LazyCallGraph::SCC &, CGSCCAnalysisManager &, LazyCallGraph &G) {
-    return Result();
-  }
-  static StringRef name() { return "NoOpCGSCCAnalysis"; }
-};
-
-/// No-op function pass which does nothing.
-struct NoOpFunctionPass {
-  PreservedAnalyses run(Function &F, FunctionAnalysisManager &) {
-    return PreservedAnalyses::all();
-  }
-  static StringRef name() { return "NoOpFunctionPass"; }
-};
-
-/// No-op function analysis.
-class NoOpFunctionAnalysis : public AnalysisInfoMixin<NoOpFunctionAnalysis> {
-  friend AnalysisInfoMixin<NoOpFunctionAnalysis>;
-  static AnalysisKey Key;
-
-public:
-  struct Result {};
-  Result run(Function &, FunctionAnalysisManager &) { return Result(); }
-  static StringRef name() { return "NoOpFunctionAnalysis"; }
-};
-
-/// No-op loop pass which does nothing.
-struct NoOpLoopPass {
-  PreservedAnalyses run(Loop &L, LoopAnalysisManager &,
-                        LoopStandardAnalysisResults &, LPMUpdater &) {
-    return PreservedAnalyses::all();
-  }
-  static StringRef name() { return "NoOpLoopPass"; }
-};
-
-/// No-op loop analysis.
-class NoOpLoopAnalysis : public AnalysisInfoMixin<NoOpLoopAnalysis> {
-  friend AnalysisInfoMixin<NoOpLoopAnalysis>;
-  static AnalysisKey Key;
-
-public:
-  struct Result {};
-  Result run(Loop &, LoopAnalysisManager &, LoopStandardAnalysisResults &) {
-    return Result();
-  }
-  static StringRef name() { return "NoOpLoopAnalysis"; }
-};
-
-AnalysisKey NoOpModuleAnalysis::Key;
-AnalysisKey NoOpCGSCCAnalysis::Key;
-AnalysisKey NoOpFunctionAnalysis::Key;
-AnalysisKey NoOpLoopAnalysis::Key;
-
-} // End anonymous namespace.
-
-void PassBuilder::invokePeepholeEPCallbacks(
-    FunctionPassManager &FPM, PassBuilder::OptimizationLevel Level) {
-  for (auto &C : PeepholeEPCallbacks)
-    C(FPM, Level);
-}
-
-void PassBuilder::registerModuleAnalyses(ModuleAnalysisManager &MAM) {
-#define MODULE_ANALYSIS(NAME, CREATE_PASS)                                     \
-  MAM.registerPass([&] { return CREATE_PASS; });
-#include "PassRegistry.def"
-
-  for (auto &C : ModuleAnalysisRegistrationCallbacks)
-    C(MAM);
-}
-
-void PassBuilder::registerCGSCCAnalyses(CGSCCAnalysisManager &CGAM) {
-#define CGSCC_ANALYSIS(NAME, CREATE_PASS)                                      \
-  CGAM.registerPass([&] { return CREATE_PASS; });
-#include "PassRegistry.def"
-
-  for (auto &C : CGSCCAnalysisRegistrationCallbacks)
-    C(CGAM);
-}
-
-void PassBuilder::registerFunctionAnalyses(FunctionAnalysisManager &FAM) {
-#define FUNCTION_ANALYSIS(NAME, CREATE_PASS)                                   \
-  FAM.registerPass([&] { return CREATE_PASS; });
-#include "PassRegistry.def"
-
-  for (auto &C : FunctionAnalysisRegistrationCallbacks)
-    C(FAM);
-}
-
-void PassBuilder::registerLoopAnalyses(LoopAnalysisManager &LAM) {
-#define LOOP_ANALYSIS(NAME, CREATE_PASS)                                       \
-  LAM.registerPass([&] { return CREATE_PASS; });
-#include "PassRegistry.def"
-
-  for (auto &C : LoopAnalysisRegistrationCallbacks)
-    C(LAM);
-}
-
-FunctionPassManager
-PassBuilder::buildFunctionSimplificationPipeline(OptimizationLevel Level,
-                                                 ThinLTOPhase Phase,
-                                                 bool DebugLogging) {
-  assert(Level != O0 && "Must request optimizations!");
-  FunctionPassManager FPM(DebugLogging);
-
-  // Form SSA out of local memory accesses after breaking apart aggregates into
-  // scalars.
-  FPM.addPass(SROA());
-
-  // Catch trivial redundancies
-  FPM.addPass(EarlyCSEPass(EnableEarlyCSEMemSSA));
-
-  // Hoisting of scalars and load expressions.
-  if (EnableGVNHoist)
-    FPM.addPass(GVNHoistPass());
-
-  // Global value numbering based sinking.
-  if (EnableGVNSink) {
-    FPM.addPass(GVNSinkPass());
-    FPM.addPass(SimplifyCFGPass());
-  }
-
-  // Speculative execution if the target has divergent branches; otherwise nop.
-  FPM.addPass(SpeculativeExecutionPass());
-
-  // Optimize based on known information about branches, and cleanup afterward.
-  FPM.addPass(JumpThreadingPass());
-  FPM.addPass(CorrelatedValuePropagationPass());
-  FPM.addPass(SimplifyCFGPass());
-  if (Level == O3)
-    FPM.addPass(AggressiveInstCombinePass());
-  FPM.addPass(InstCombinePass());
-
-  if (!isOptimizingForSize(Level))
-    FPM.addPass(LibCallsShrinkWrapPass());
-
-  invokePeepholeEPCallbacks(FPM, Level);
-
-  // For PGO use pipeline, try to optimize memory intrinsics such as memcpy
-  // using the size value profile. Don't perform this when optimizing for size.
-  if (PGOOpt && !PGOOpt->ProfileUseFile.empty() &&
-      !isOptimizingForSize(Level))
-    FPM.addPass(PGOMemOPSizeOpt());
-
-  FPM.addPass(TailCallElimPass());
-  FPM.addPass(SimplifyCFGPass());
-
-  // Form canonically associated expression trees, and simplify the trees using
-  // basic mathematical properties. For example, this will form (nearly)
-  // minimal multiplication trees.
-  FPM.addPass(ReassociatePass());
-
-  // Add the primary loop simplification pipeline.
-  // FIXME: Currently this is split into two loop pass pipelines because we run
-  // some function passes in between them. These can and should be removed
-  // and/or replaced by scheduling the loop pass equivalents in the correct
-  // positions. But those equivalent passes aren't powerful enough yet.
-  // Specifically, `SimplifyCFGPass` and `InstCombinePass` are currently still
-  // used. We have `LoopSimplifyCFGPass` which isn't yet powerful enough yet to
-  // fully replace `SimplifyCFGPass`, and the closest to the other we have is
-  // `LoopInstSimplify`.
-  LoopPassManager LPM1(DebugLogging), LPM2(DebugLogging);
-
-  // Simplify the loop body. We do this initially to clean up after other loop
-  // passes run, either when iterating on a loop or on inner loops with
-  // implications on the outer loop.
-  LPM1.addPass(LoopInstSimplifyPass());
-  LPM1.addPass(LoopSimplifyCFGPass());
-
-  // Rotate Loop - disable header duplication at -Oz
-  LPM1.addPass(LoopRotatePass(Level != Oz));
-  LPM1.addPass(LICMPass());
-  LPM1.addPass(SimpleLoopUnswitchPass());
-  LPM2.addPass(IndVarSimplifyPass());
-  LPM2.addPass(LoopIdiomRecognizePass());
-
-  for (auto &C : LateLoopOptimizationsEPCallbacks)
-    C(LPM2, Level);
-
-  LPM2.addPass(LoopDeletionPass());
-  // Do not enable unrolling in PreLinkThinLTO phase during sample PGO
-  // because it changes IR to makes profile annotation in back compile
-  // inaccurate.
-  if (Phase != ThinLTOPhase::PreLink ||
-      !PGOOpt || PGOOpt->SampleProfileFile.empty())
-    LPM2.addPass(LoopFullUnrollPass(Level));
-
-  for (auto &C : LoopOptimizerEndEPCallbacks)
-    C(LPM2, Level);
-
-  // We provide the opt remark emitter pass for LICM to use. We only need to do
-  // this once as it is immutable.
-  FPM.addPass(RequireAnalysisPass<OptimizationRemarkEmitterAnalysis, Function>());
-  FPM.addPass(createFunctionToLoopPassAdaptor(std::move(LPM1), DebugLogging));
-  FPM.addPass(SimplifyCFGPass());
-  FPM.addPass(InstCombinePass());
-  FPM.addPass(createFunctionToLoopPassAdaptor(std::move(LPM2), DebugLogging));
-
-  // Eliminate redundancies.
-  if (Level != O1) {
-    // These passes add substantial compile time so skip them at O1.
-    FPM.addPass(MergedLoadStoreMotionPass());
-    if (RunNewGVN)
-      FPM.addPass(NewGVNPass());
-    else
-      FPM.addPass(GVN());
-  }
-
-  // Specially optimize memory movement as it doesn't look like dataflow in SSA.
-  FPM.addPass(MemCpyOptPass());
-
-  // Sparse conditional constant propagation.
-  // FIXME: It isn't clear why we do this *after* loop passes rather than
-  // before...
-  FPM.addPass(SCCPPass());
-
-  // Delete dead bit computations (instcombine runs after to fold away the dead
-  // computations, and then ADCE will run later to exploit any new DCE
-  // opportunities that creates).
-  FPM.addPass(BDCEPass());
-
-  // Run instcombine after redundancy and dead bit elimination to exploit
-  // opportunities opened up by them.
-  FPM.addPass(InstCombinePass());
-  invokePeepholeEPCallbacks(FPM, Level);
-
-  // Re-consider control flow based optimizations after redundancy elimination,
-  // redo DCE, etc.
-  FPM.addPass(JumpThreadingPass());
-  FPM.addPass(CorrelatedValuePropagationPass());
-  FPM.addPass(DSEPass());
-  FPM.addPass(createFunctionToLoopPassAdaptor(LICMPass(), DebugLogging));
-
-  for (auto &C : ScalarOptimizerLateEPCallbacks)
-    C(FPM, Level);
-
-  // Finally, do an expensive DCE pass to catch all the dead code exposed by
-  // the simplifications and basic cleanup after all the simplifications.
-  FPM.addPass(ADCEPass());
-  FPM.addPass(SimplifyCFGPass());
-  FPM.addPass(InstCombinePass());
-  invokePeepholeEPCallbacks(FPM, Level);
-
-  if (EnableCHR && Level == O3 && PGOOpt &&
-      (!PGOOpt->ProfileUseFile.empty() || !PGOOpt->SampleProfileFile.empty()))
-    FPM.addPass(ControlHeightReductionPass());
-
-  return FPM;
-}
-
-void PassBuilder::addPGOInstrPasses(ModulePassManager &MPM, bool DebugLogging,
-                                    PassBuilder::OptimizationLevel Level,
-                                    bool RunProfileGen,
-                                    std::string ProfileGenFile,
-                                    std::string ProfileUseFile,
-                                    std::string ProfileRemappingFile) {
-  // Generally running simplification passes and the inliner with an high
-  // threshold results in smaller executables, but there may be cases where
-  // the size grows, so let's be conservative here and skip this simplification
-  // at -Os/Oz.
-  if (!isOptimizingForSize(Level)) {
-    InlineParams IP;
-
-    // In the old pass manager, this is a cl::opt. Should still this be one?
-    IP.DefaultThreshold = 75;
-
-    // FIXME: The hint threshold has the same value used by the regular inliner.
-    // This should probably be lowered after performance testing.
-    // FIXME: this comment is cargo culted from the old pass manager, revisit).
-    IP.HintThreshold = 325;
-
-    CGSCCPassManager CGPipeline(DebugLogging);
-
-    CGPipeline.addPass(InlinerPass(IP));
-
-    FunctionPassManager FPM;
-    FPM.addPass(SROA());
-    FPM.addPass(EarlyCSEPass());    // Catch trivial redundancies.
-    FPM.addPass(SimplifyCFGPass()); // Merge & remove basic blocks.
-    FPM.addPass(InstCombinePass()); // Combine silly sequences.
-    invokePeepholeEPCallbacks(FPM, Level);
-
-    CGPipeline.addPass(createCGSCCToFunctionPassAdaptor(std::move(FPM)));
-
-    MPM.addPass(createModuleToPostOrderCGSCCPassAdaptor(std::move(CGPipeline)));
-  }
-
-  // Delete anything that is now dead to make sure that we don't instrument
-  // dead code. Instrumentation can end up keeping dead code around and
-  // dramatically increase code size.
-  MPM.addPass(GlobalDCEPass());
-
-  if (RunProfileGen) {
-    MPM.addPass(PGOInstrumentationGen());
-
-    FunctionPassManager FPM;
-    FPM.addPass(
-        createFunctionToLoopPassAdaptor(LoopRotatePass(), DebugLogging));
-    MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
-
-    // Add the profile lowering pass.
-    InstrProfOptions Options;
-    if (!ProfileGenFile.empty())
-      Options.InstrProfileOutput = ProfileGenFile;
-    Options.DoCounterPromotion = true;
-    MPM.addPass(InstrProfiling(Options));
-  }
-
-  if (!ProfileUseFile.empty())
-    MPM.addPass(PGOInstrumentationUse(ProfileUseFile, ProfileRemappingFile));
-}
-
-static InlineParams
-getInlineParamsFromOptLevel(PassBuilder::OptimizationLevel Level) {
-  auto O3 = PassBuilder::O3;
-  unsigned OptLevel = Level > O3 ? 2 : Level;
-  unsigned SizeLevel = Level > O3 ? Level - O3 : 0;
-  return getInlineParams(OptLevel, SizeLevel);
-}
-
-ModulePassManager
-PassBuilder::buildModuleSimplificationPipeline(OptimizationLevel Level,
-                                               ThinLTOPhase Phase,
-                                               bool DebugLogging) {
-  ModulePassManager MPM(DebugLogging);
-
-  // Do basic inference of function attributes from known properties of system
-  // libraries and other oracles.
-  MPM.addPass(InferFunctionAttrsPass());
-
-  // Create an early function pass manager to cleanup the output of the
-  // frontend.
-  FunctionPassManager EarlyFPM(DebugLogging);
-  EarlyFPM.addPass(SimplifyCFGPass());
-  EarlyFPM.addPass(SROA());
-  EarlyFPM.addPass(EarlyCSEPass());
-  EarlyFPM.addPass(LowerExpectIntrinsicPass());
-  if (Level == O3)
-    EarlyFPM.addPass(CallSiteSplittingPass());
-
-  // In SamplePGO ThinLTO backend, we need instcombine before profile annotation
-  // to convert bitcast to direct calls so that they can be inlined during the
-  // profile annotation prepration step.
-  // More details about SamplePGO design can be found in:
-  // https://research.google.com/pubs/pub45290.html
-  // FIXME: revisit how SampleProfileLoad/Inliner/ICP is structured.
-  if (PGOOpt && !PGOOpt->SampleProfileFile.empty() &&
-      Phase == ThinLTOPhase::PostLink)
-    EarlyFPM.addPass(InstCombinePass());
-  MPM.addPass(createModuleToFunctionPassAdaptor(std::move(EarlyFPM)));
-
-  if (PGOOpt && !PGOOpt->SampleProfileFile.empty()) {
-    // Annotate sample profile right after early FPM to ensure freshness of
-    // the debug info.
-    MPM.addPass(SampleProfileLoaderPass(PGOOpt->SampleProfileFile,
-                                        PGOOpt->ProfileRemappingFile,
-                                        Phase == ThinLTOPhase::PreLink));
-    // Do not invoke ICP in the ThinLTOPrelink phase as it makes it hard
-    // for the profile annotation to be accurate in the ThinLTO backend.
-    if (Phase != ThinLTOPhase::PreLink)
-      // We perform early indirect call promotion here, before globalopt.
-      // This is important for the ThinLTO backend phase because otherwise
-      // imported available_externally functions look unreferenced and are
-      // removed.
-      MPM.addPass(PGOIndirectCallPromotion(Phase == ThinLTOPhase::PostLink,
-                                           true));
-  }
-
-  // Interprocedural constant propagation now that basic cleanup has occurred
-  // and prior to optimizing globals.
-  // FIXME: This position in the pipeline hasn't been carefully considered in
-  // years, it should be re-analyzed.
-  MPM.addPass(IPSCCPPass());
-
-  // Attach metadata to indirect call sites indicating the set of functions
-  // they may target at run-time. This should follow IPSCCP.
-  MPM.addPass(CalledValuePropagationPass());
-
-  // Optimize globals to try and fold them into constants.
-  MPM.addPass(GlobalOptPass());
-
-  // Promote any localized globals to SSA registers.
-  // FIXME: Should this instead by a run of SROA?
-  // FIXME: We should probably run instcombine and simplify-cfg afterward to
-  // delete control flows that are dead once globals have been folded to
-  // constants.
-  MPM.addPass(createModuleToFunctionPassAdaptor(PromotePass()));
-
-  // Remove any dead arguments exposed by cleanups and constand folding
-  // globals.
-  MPM.addPass(DeadArgumentEliminationPass());
-
-  // Create a small function pass pipeline to cleanup after all the global
-  // optimizations.
-  FunctionPassManager GlobalCleanupPM(DebugLogging);
-  GlobalCleanupPM.addPass(InstCombinePass());
-  invokePeepholeEPCallbacks(GlobalCleanupPM, Level);
-
-  GlobalCleanupPM.addPass(SimplifyCFGPass());
-  MPM.addPass(createModuleToFunctionPassAdaptor(std::move(GlobalCleanupPM)));
-
-  // Add all the requested passes for instrumentation PGO, if requested.
-  if (PGOOpt && Phase != ThinLTOPhase::PostLink &&
-      (!PGOOpt->ProfileGenFile.empty() || !PGOOpt->ProfileUseFile.empty())) {
-    addPGOInstrPasses(MPM, DebugLogging, Level, PGOOpt->RunProfileGen,
-                      PGOOpt->ProfileGenFile, PGOOpt->ProfileUseFile,
-                      PGOOpt->ProfileRemappingFile);
-    MPM.addPass(PGOIndirectCallPromotion(false, false));
-  }
-
-  // Synthesize function entry counts for non-PGO compilation.
-  if (EnableSyntheticCounts && !PGOOpt)
-    MPM.addPass(SyntheticCountsPropagation());
-
-  // Require the GlobalsAA analysis for the module so we can query it within
-  // the CGSCC pipeline.
-  MPM.addPass(RequireAnalysisPass<GlobalsAA, Module>());
-
-  // Require the ProfileSummaryAnalysis for the module so we can query it within
-  // the inliner pass.
-  MPM.addPass(RequireAnalysisPass<ProfileSummaryAnalysis, Module>());
-
-  // Now begin the main postorder CGSCC pipeline.
-  // FIXME: The current CGSCC pipeline has its origins in the legacy pass
-  // manager and trying to emulate its precise behavior. Much of this doesn't
-  // make a lot of sense and we should revisit the core CGSCC structure.
-  CGSCCPassManager MainCGPipeline(DebugLogging);
-
-  // Note: historically, the PruneEH pass was run first to deduce nounwind and
-  // generally clean up exception handling overhead. It isn't clear this is
-  // valuable as the inliner doesn't currently care whether it is inlining an
-  // invoke or a call.
-
-  // Run the inliner first. The theory is that we are walking bottom-up and so
-  // the callees have already been fully optimized, and we want to inline them
-  // into the callers so that our optimizations can reflect that.
-  // For PreLinkThinLTO pass, we disable hot-caller heuristic for sample PGO
-  // because it makes profile annotation in the backend inaccurate.
-  InlineParams IP = getInlineParamsFromOptLevel(Level);
-  if (Phase == ThinLTOPhase::PreLink &&
-      PGOOpt && !PGOOpt->SampleProfileFile.empty())
-    IP.HotCallSiteThreshold = 0;
-  MainCGPipeline.addPass(InlinerPass(IP));
-
-  // Now deduce any function attributes based in the current code.
-  MainCGPipeline.addPass(PostOrderFunctionAttrsPass());
-
-  // When at O3 add argument promotion to the pass pipeline.
-  // FIXME: It isn't at all clear why this should be limited to O3.
-  if (Level == O3)
-    MainCGPipeline.addPass(ArgumentPromotionPass());
-
-  // Lastly, add the core function simplification pipeline nested inside the
-  // CGSCC walk.
-  MainCGPipeline.addPass(createCGSCCToFunctionPassAdaptor(
-      buildFunctionSimplificationPipeline(Level, Phase, DebugLogging)));
-
-  // We only want to do hot cold splitting once for ThinLTO, during the
-  // post-link ThinLTO.
-  if (EnableHotColdSplit && Phase != ThinLTOPhase::PreLink)
-    MPM.addPass(HotColdSplittingPass());
-
-  for (auto &C : CGSCCOptimizerLateEPCallbacks)
-    C(MainCGPipeline, Level);
-
-  // We wrap the CGSCC pipeline in a devirtualization repeater. This will try
-  // to detect when we devirtualize indirect calls and iterate the SCC passes
-  // in that case to try and catch knock-on inlining or function attrs
-  // opportunities. Then we add it to the module pipeline by walking the SCCs
-  // in postorder (or bottom-up).
-  MPM.addPass(
-      createModuleToPostOrderCGSCCPassAdaptor(createDevirtSCCRepeatedPass(
-          std::move(MainCGPipeline), MaxDevirtIterations)));
-
-  return MPM;
-}
-
-ModulePassManager
-PassBuilder::buildModuleOptimizationPipeline(OptimizationLevel Level,
-                                             bool DebugLogging) {
-  ModulePassManager MPM(DebugLogging);
-
-  // Optimize globals now that the module is fully simplified.
-  MPM.addPass(GlobalOptPass());
-  MPM.addPass(GlobalDCEPass());
-
-  // Run partial inlining pass to partially inline functions that have
-  // large bodies.
-  if (RunPartialInlining)
-    MPM.addPass(PartialInlinerPass());
-
-  // Remove avail extern fns and globals definitions since we aren't compiling
-  // an object file for later LTO. For LTO we want to preserve these so they
-  // are eligible for inlining at link-time. Note if they are unreferenced they
-  // will be removed by GlobalDCE later, so this only impacts referenced
-  // available externally globals. Eventually they will be suppressed during
-  // codegen, but eliminating here enables more opportunity for GlobalDCE as it
-  // may make globals referenced by available external functions dead and saves
-  // running remaining passes on the eliminated functions.
-  MPM.addPass(EliminateAvailableExternallyPass());
-
-  // Do RPO function attribute inference across the module to forward-propagate
-  // attributes where applicable.
-  // FIXME: Is this really an optimization rather than a canonicalization?
-  MPM.addPass(ReversePostOrderFunctionAttrsPass());
-
-  // Re-require GloblasAA here prior to function passes. This is particularly
-  // useful as the above will have inlined, DCE'ed, and function-attr
-  // propagated everything. We should at this point have a reasonably minimal
-  // and richly annotated call graph. By computing aliasing and mod/ref
-  // information for all local globals here, the late loop passes and notably
-  // the vectorizer will be able to use them to help recognize vectorizable
-  // memory operations.
-  MPM.addPass(RequireAnalysisPass<GlobalsAA, Module>());
-
-  FunctionPassManager OptimizePM(DebugLogging);
-  OptimizePM.addPass(Float2IntPass());
-  // FIXME: We need to run some loop optimizations to re-rotate loops after
-  // simplify-cfg and others undo their rotation.
-
-  // Optimize the loop execution. These passes operate on entire loop nests
-  // rather than on each loop in an inside-out manner, and so they are actually
-  // function passes.
-
-  for (auto &C : VectorizerStartEPCallbacks)
-    C(OptimizePM, Level);
-
-  // First rotate loops that may have been un-rotated by prior passes.
-  OptimizePM.addPass(
-      createFunctionToLoopPassAdaptor(LoopRotatePass(), DebugLogging));
-
-  // Distribute loops to allow partial vectorization.  I.e. isolate dependences
-  // into separate loop that would otherwise inhibit vectorization.  This is
-  // currently only performed for loops marked with the metadata
-  // llvm.loop.distribute=true or when -enable-loop-distribute is specified.
-  OptimizePM.addPass(LoopDistributePass());
-
-  // Now run the core loop vectorizer.
-  OptimizePM.addPass(LoopVectorizePass());
-
-  // Eliminate loads by forwarding stores from the previous iteration to loads
-  // of the current iteration.
-  OptimizePM.addPass(LoopLoadEliminationPass());
-
-  // Cleanup after the loop optimization passes.
-  OptimizePM.addPass(InstCombinePass());
-
-  // Now that we've formed fast to execute loop structures, we do further
-  // optimizations. These are run afterward as they might block doing complex
-  // analyses and transforms such as what are needed for loop vectorization.
-
-  // Cleanup after loop vectorization, etc. Simplification passes like CVP and
-  // GVN, loop transforms, and others have already run, so it's now better to
-  // convert to more optimized IR using more aggressive simplify CFG options.
-  // The extra sinking transform can create larger basic blocks, so do this
-  // before SLP vectorization.
-  OptimizePM.addPass(SimplifyCFGPass(SimplifyCFGOptions().
-                                     forwardSwitchCondToPhi(true).
-                                     convertSwitchToLookupTable(true).
-                                     needCanonicalLoops(false).
-                                     sinkCommonInsts(true)));
-
-  // Optimize parallel scalar instruction chains into SIMD instructions.
-  OptimizePM.addPass(SLPVectorizerPass());
-
-  OptimizePM.addPass(InstCombinePass());
-
-  // Unroll small loops to hide loop backedge latency and saturate any parallel
-  // execution resources of an out-of-order processor. We also then need to
-  // clean up redundancies and loop invariant code.
-  // FIXME: It would be really good to use a loop-integrated instruction
-  // combiner for cleanup here so that the unrolling and LICM can be pipelined
-  // across the loop nests.
-  // We do UnrollAndJam in a separate LPM to ensure it happens before unroll
-  if (EnableUnrollAndJam) {
-    OptimizePM.addPass(
-        createFunctionToLoopPassAdaptor(LoopUnrollAndJamPass(Level)));
-  }
-  OptimizePM.addPass(LoopUnrollPass(LoopUnrollOptions(Level)));
-  OptimizePM.addPass(WarnMissedTransformationsPass());
-  OptimizePM.addPass(InstCombinePass());
-  OptimizePM.addPass(RequireAnalysisPass<OptimizationRemarkEmitterAnalysis, Function>());
-  OptimizePM.addPass(createFunctionToLoopPassAdaptor(LICMPass(), DebugLogging));
-
-  // Now that we've vectorized and unrolled loops, we may have more refined
-  // alignment information, try to re-derive it here.
-  OptimizePM.addPass(AlignmentFromAssumptionsPass());
-
-  // LoopSink pass sinks instructions hoisted by LICM, which serves as a
-  // canonicalization pass that enables other optimizations. As a result,
-  // LoopSink pass needs to be a very late IR pass to avoid undoing LICM
-  // result too early.
-  OptimizePM.addPass(LoopSinkPass());
-
-  // And finally clean up LCSSA form before generating code.
-  OptimizePM.addPass(InstSimplifyPass());
-
-  // This hoists/decomposes div/rem ops. It should run after other sink/hoist
-  // passes to avoid re-sinking, but before SimplifyCFG because it can allow
-  // flattening of blocks.
-  OptimizePM.addPass(DivRemPairsPass());
-
-  // LoopSink (and other loop passes since the last simplifyCFG) might have
-  // resulted in single-entry-single-exit or empty blocks. Clean up the CFG.
-  OptimizePM.addPass(SimplifyCFGPass());
-
-  // Optimize PHIs by speculating around them when profitable. Note that this
-  // pass needs to be run after any PRE or similar pass as it is essentially
-  // inserting redudnancies into the progrem. This even includes SimplifyCFG.
-  OptimizePM.addPass(SpeculateAroundPHIsPass());
-
-  for (auto &C : OptimizerLastEPCallbacks)
-    C(OptimizePM, Level);
-
-  // Add the core optimizing pipeline.
-  MPM.addPass(createModuleToFunctionPassAdaptor(std::move(OptimizePM)));
-
-  MPM.addPass(CGProfilePass());
-
-  // Now we need to do some global optimization transforms.
-  // FIXME: It would seem like these should come first in the optimization
-  // pipeline and maybe be the bottom of the canonicalization pipeline? Weird
-  // ordering here.
-  MPM.addPass(GlobalDCEPass());
-  MPM.addPass(ConstantMergePass());
-
-  return MPM;
-}
-
-ModulePassManager
-PassBuilder::buildPerModuleDefaultPipeline(OptimizationLevel Level,
-                                           bool DebugLogging) {
-  assert(Level != O0 && "Must request optimizations for the default pipeline!");
-
-  ModulePassManager MPM(DebugLogging);
-
-  // Force any function attributes we want the rest of the pipeline to observe.
-  MPM.addPass(ForceFunctionAttrsPass());
-
-  // Apply module pipeline start EP callback.
-  for (auto &C : PipelineStartEPCallbacks)
-    C(MPM);
-
-  if (PGOOpt && PGOOpt->SamplePGOSupport)
-    MPM.addPass(createModuleToFunctionPassAdaptor(AddDiscriminatorsPass()));
-
-  // Add the core simplification pipeline.
-  MPM.addPass(buildModuleSimplificationPipeline(Level, ThinLTOPhase::None,
-                                                DebugLogging));
-
-  // Now add the optimization pipeline.
-  MPM.addPass(buildModuleOptimizationPipeline(Level, DebugLogging));
-
-  return MPM;
-}
-
-ModulePassManager
-PassBuilder::buildThinLTOPreLinkDefaultPipeline(OptimizationLevel Level,
-                                                bool DebugLogging) {
-  assert(Level != O0 && "Must request optimizations for the default pipeline!");
-
-  ModulePassManager MPM(DebugLogging);
-
-  // Force any function attributes we want the rest of the pipeline to observe.
-  MPM.addPass(ForceFunctionAttrsPass());
-
-  if (PGOOpt && PGOOpt->SamplePGOSupport)
-    MPM.addPass(createModuleToFunctionPassAdaptor(AddDiscriminatorsPass()));
-
-  // Apply module pipeline start EP callback.
-  for (auto &C : PipelineStartEPCallbacks)
-    C(MPM);
-
-  // If we are planning to perform ThinLTO later, we don't bloat the code with
-  // unrolling/vectorization/... now. Just simplify the module as much as we
-  // can.
-  MPM.addPass(buildModuleSimplificationPipeline(Level, ThinLTOPhase::PreLink,
-                                                DebugLogging));
-
-  // Run partial inlining pass to partially inline functions that have
-  // large bodies.
-  // FIXME: It isn't clear whether this is really the right place to run this
-  // in ThinLTO. Because there is another canonicalization and simplification
-  // phase that will run after the thin link, running this here ends up with
-  // less information than will be available later and it may grow functions in
-  // ways that aren't beneficial.
-  if (RunPartialInlining)
-    MPM.addPass(PartialInlinerPass());
-
-  // Reduce the size of the IR as much as possible.
-  MPM.addPass(GlobalOptPass());
-
-  return MPM;
-}
-
-ModulePassManager PassBuilder::buildThinLTODefaultPipeline(
-    OptimizationLevel Level, bool DebugLogging,
-    const ModuleSummaryIndex *ImportSummary) {
-  ModulePassManager MPM(DebugLogging);
-
-  if (ImportSummary) {
-    // These passes import type identifier resolutions for whole-program
-    // devirtualization and CFI. They must run early because other passes may
-    // disturb the specific instruction patterns that these passes look for,
-    // creating dependencies on resolutions that may not appear in the summary.
-    //
-    // For example, GVN may transform the pattern assume(type.test) appearing in
-    // two basic blocks into assume(phi(type.test, type.test)), which would
-    // transform a dependency on a WPD resolution into a dependency on a type
-    // identifier resolution for CFI.
-    //
-    // Also, WPD has access to more precise information than ICP and can
-    // devirtualize more effectively, so it should operate on the IR first.
-    MPM.addPass(WholeProgramDevirtPass(nullptr, ImportSummary));
-    MPM.addPass(LowerTypeTestsPass(nullptr, ImportSummary));
-  }
-
-  // Force any function attributes we want the rest of the pipeline to observe.
-  MPM.addPass(ForceFunctionAttrsPass());
-
-  // During the ThinLTO backend phase we perform early indirect call promotion
-  // here, before globalopt. Otherwise imported available_externally functions
-  // look unreferenced and are removed.
-  // FIXME: move this into buildModuleSimplificationPipeline to merge the logic
-  //        with SamplePGO.
-  if (!PGOOpt || PGOOpt->SampleProfileFile.empty())
-    MPM.addPass(PGOIndirectCallPromotion(true /* InLTO */,
-                                         false /* SamplePGO */));
-
-  // Add the core simplification pipeline.
-  MPM.addPass(buildModuleSimplificationPipeline(Level, ThinLTOPhase::PostLink,
-                                                DebugLogging));
-
-  // Now add the optimization pipeline.
-  MPM.addPass(buildModuleOptimizationPipeline(Level, DebugLogging));
-
-  return MPM;
-}
-
-ModulePassManager
-PassBuilder::buildLTOPreLinkDefaultPipeline(OptimizationLevel Level,
-                                            bool DebugLogging) {
-  assert(Level != O0 && "Must request optimizations for the default pipeline!");
-  // FIXME: We should use a customized pre-link pipeline!
-  return buildPerModuleDefaultPipeline(Level, DebugLogging);
-}
-
-ModulePassManager
-PassBuilder::buildLTODefaultPipeline(OptimizationLevel Level, bool DebugLogging,
-                                     ModuleSummaryIndex *ExportSummary) {
-  assert(Level != O0 && "Must request optimizations for the default pipeline!");
-  ModulePassManager MPM(DebugLogging);
-
-  if (PGOOpt && !PGOOpt->SampleProfileFile.empty()) {
-    // Load sample profile before running the LTO optimization pipeline.
-    MPM.addPass(SampleProfileLoaderPass(PGOOpt->SampleProfileFile,
-                                        PGOOpt->ProfileRemappingFile,
-                                        false /* ThinLTOPhase::PreLink */));
-  }
-
-  // Remove unused virtual tables to improve the quality of code generated by
-  // whole-program devirtualization and bitset lowering.
-  MPM.addPass(GlobalDCEPass());
-
-  // Force any function attributes we want the rest of the pipeline to observe.
-  MPM.addPass(ForceFunctionAttrsPass());
-
-  // Do basic inference of function attributes from known properties of system
-  // libraries and other oracles.
-  MPM.addPass(InferFunctionAttrsPass());
-
-  if (Level > 1) {
-    FunctionPassManager EarlyFPM(DebugLogging);
-    EarlyFPM.addPass(CallSiteSplittingPass());
-    MPM.addPass(createModuleToFunctionPassAdaptor(std::move(EarlyFPM)));
-
-    // Indirect call promotion. This should promote all the targets that are
-    // left by the earlier promotion pass that promotes intra-module targets.
-    // This two-step promotion is to save the compile time. For LTO, it should
-    // produce the same result as if we only do promotion here.
-    MPM.addPass(PGOIndirectCallPromotion(
-        true /* InLTO */, PGOOpt && !PGOOpt->SampleProfileFile.empty()));
-    // Propagate constants at call sites into the functions they call.  This
-    // opens opportunities for globalopt (and inlining) by substituting function
-    // pointers passed as arguments to direct uses of functions.
-   MPM.addPass(IPSCCPPass());
-
-   // Attach metadata to indirect call sites indicating the set of functions
-   // they may target at run-time. This should follow IPSCCP.
-   MPM.addPass(CalledValuePropagationPass());
-  }
-
-  // Now deduce any function attributes based in the current code.
-  MPM.addPass(createModuleToPostOrderCGSCCPassAdaptor(
-              PostOrderFunctionAttrsPass()));
-
-  // Do RPO function attribute inference across the module to forward-propagate
-  // attributes where applicable.
-  // FIXME: Is this really an optimization rather than a canonicalization?
-  MPM.addPass(ReversePostOrderFunctionAttrsPass());
-
-  // Use inragne annotations on GEP indices to split globals where beneficial.
-  MPM.addPass(GlobalSplitPass());
-
-  // Run whole program optimization of virtual call when the list of callees
-  // is fixed.
-  MPM.addPass(WholeProgramDevirtPass(ExportSummary, nullptr));
-
-  // Stop here at -O1.
-  if (Level == 1) {
-    // The LowerTypeTestsPass needs to run to lower type metadata and the
-    // type.test intrinsics. The pass does nothing if CFI is disabled.
-    MPM.addPass(LowerTypeTestsPass(ExportSummary, nullptr));
-    return MPM;
-  }
-
-  // Optimize globals to try and fold them into constants.
-  MPM.addPass(GlobalOptPass());
-
-  // Promote any localized globals to SSA registers.
-  MPM.addPass(createModuleToFunctionPassAdaptor(PromotePass()));
-
-  // Linking modules together can lead to duplicate global constant, only
-  // keep one copy of each constant.
-  MPM.addPass(ConstantMergePass());
-
-  // Remove unused arguments from functions.
-  MPM.addPass(DeadArgumentEliminationPass());
-
-  // Reduce the code after globalopt and ipsccp.  Both can open up significant
-  // simplification opportunities, and both can propagate functions through
-  // function pointers.  When this happens, we often have to resolve varargs
-  // calls, etc, so let instcombine do this.
-  FunctionPassManager PeepholeFPM(DebugLogging);
-  if (Level == O3)
-    PeepholeFPM.addPass(AggressiveInstCombinePass());
-  PeepholeFPM.addPass(InstCombinePass());
-  invokePeepholeEPCallbacks(PeepholeFPM, Level);
-
-  MPM.addPass(createModuleToFunctionPassAdaptor(std::move(PeepholeFPM)));
-
-  // Note: historically, the PruneEH pass was run first to deduce nounwind and
-  // generally clean up exception handling overhead. It isn't clear this is
-  // valuable as the inliner doesn't currently care whether it is inlining an
-  // invoke or a call.
-  // Run the inliner now.
-  MPM.addPass(createModuleToPostOrderCGSCCPassAdaptor(
-      InlinerPass(getInlineParamsFromOptLevel(Level))));
-
-  // Optimize globals again after we ran the inliner.
-  MPM.addPass(GlobalOptPass());
-
-  // Garbage collect dead functions.
-  // FIXME: Add ArgumentPromotion pass after once it's ported.
-  MPM.addPass(GlobalDCEPass());
-
-  FunctionPassManager FPM(DebugLogging);
-  // The IPO Passes may leave cruft around. Clean up after them.
-  FPM.addPass(InstCombinePass());
-  invokePeepholeEPCallbacks(FPM, Level);
-
-  FPM.addPass(JumpThreadingPass());
-
-  // Break up allocas
-  FPM.addPass(SROA());
-
-  // Run a few AA driver optimizations here and now to cleanup the code.
-  MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
-
-  MPM.addPass(createModuleToPostOrderCGSCCPassAdaptor(
-              PostOrderFunctionAttrsPass()));
-  // FIXME: here we run IP alias analysis in the legacy PM.
-
-  FunctionPassManager MainFPM;
-
-  // FIXME: once we fix LoopPass Manager, add LICM here.
-  // FIXME: once we provide support for enabling MLSM, add it here.
-  // FIXME: once we provide support for enabling NewGVN, add it here.
-  if (RunNewGVN)
-    MainFPM.addPass(NewGVNPass());
-  else
-    MainFPM.addPass(GVN());
-
-  // Remove dead memcpy()'s.
-  MainFPM.addPass(MemCpyOptPass());
-
-  // Nuke dead stores.
-  MainFPM.addPass(DSEPass());
-
-  // FIXME: at this point, we run a bunch of loop passes:
-  // indVarSimplify, loopDeletion, loopInterchange, loopUnrool,
-  // loopVectorize. Enable them once the remaining issue with LPM
-  // are sorted out.
-
-  MainFPM.addPass(InstCombinePass());
-  MainFPM.addPass(SimplifyCFGPass());
-  MainFPM.addPass(SCCPPass());
-  MainFPM.addPass(InstCombinePass());
-  MainFPM.addPass(BDCEPass());
-
-  // FIXME: We may want to run SLPVectorizer here.
-  // After vectorization, assume intrinsics may tell us more
-  // about pointer alignments.
-#if 0
-  MainFPM.add(AlignmentFromAssumptionsPass());
-#endif
-
-  // FIXME: Conditionally run LoadCombine here, after it's ported
-  // (in case we still have this pass, given its questionable usefulness).
-
-  MainFPM.addPass(InstCombinePass());
-  invokePeepholeEPCallbacks(MainFPM, Level);
-  MainFPM.addPass(JumpThreadingPass());
-  MPM.addPass(createModuleToFunctionPassAdaptor(std::move(MainFPM)));
-
-  // Create a function that performs CFI checks for cross-DSO calls with
-  // targets in the current module.
-  MPM.addPass(CrossDSOCFIPass());
-
-  // Lower type metadata and the type.test intrinsic. This pass supports
-  // clang's control flow integrity mechanisms (-fsanitize=cfi*) and needs
-  // to be run at link time if CFI is enabled. This pass does nothing if
-  // CFI is disabled.
-  MPM.addPass(LowerTypeTestsPass(ExportSummary, nullptr));
-
-  // Add late LTO optimization passes.
-  // Delete basic blocks, which optimization passes may have killed.
-  MPM.addPass(createModuleToFunctionPassAdaptor(SimplifyCFGPass()));
-
-  // Drop bodies of available eternally objects to improve GlobalDCE.
-  MPM.addPass(EliminateAvailableExternallyPass());
-
-  // Now that we have optimized the program, discard unreachable functions.
-  MPM.addPass(GlobalDCEPass());
-
-  // FIXME: Enable MergeFuncs, conditionally, after ported, maybe.
-  return MPM;
-}
-
-AAManager PassBuilder::buildDefaultAAPipeline() {
-  AAManager AA;
-
-  // The order in which these are registered determines their priority when
-  // being queried.
-
-  // First we register the basic alias analysis that provides the majority of
-  // per-function local AA logic. This is a stateless, on-demand local set of
-  // AA techniques.
-  AA.registerFunctionAnalysis<BasicAA>();
-
-  // Next we query fast, specialized alias analyses that wrap IR-embedded
-  // information about aliasing.
-  AA.registerFunctionAnalysis<ScopedNoAliasAA>();
-  AA.registerFunctionAnalysis<TypeBasedAA>();
-
-  // Add support for querying global aliasing information when available.
-  // Because the `AAManager` is a function analysis and `GlobalsAA` is a module
-  // analysis, all that the `AAManager` can do is query for any *cached*
-  // results from `GlobalsAA` through a readonly proxy.
-  AA.registerModuleAnalysis<GlobalsAA>();
-
-  return AA;
-}
-
-static Optional<int> parseRepeatPassName(StringRef Name) {
-  if (!Name.consume_front("repeat<") || !Name.consume_back(">"))
-    return None;
-  int Count;
-  if (Name.getAsInteger(0, Count) || Count <= 0)
-    return None;
-  return Count;
-}
-
-static Optional<int> parseDevirtPassName(StringRef Name) {
-  if (!Name.consume_front("devirt<") || !Name.consume_back(">"))
-    return None;
-  int Count;
-  if (Name.getAsInteger(0, Count) || Count <= 0)
-    return None;
-  return Count;
-}
-
-static bool checkParametrizedPassName(StringRef Name, StringRef PassName) {
-  if (!Name.consume_front(PassName))
-    return false;
-  // normal pass name w/o parameters == default parameters
-  if (Name.empty())
-    return true;
-  return Name.startswith("<") && Name.endswith(">");
-}
-
-namespace {
-
-/// This performs customized parsing of pass name with parameters.
-///
-/// We do not need parametrization of passes in textual pipeline very often,
-/// yet on a rare occasion ability to specify parameters right there can be
-/// useful.
-///
-/// \p Name - parameterized specification of a pass from a textual pipeline
-/// is a string in a form of :
-///      PassName '<' parameter-list '>'
-///
-/// Parameter list is being parsed by the parser callable argument, \p Parser,
-/// It takes a string-ref of parameters and returns either StringError or a
-/// parameter list in a form of a custom parameters type, all wrapped into
-/// Expected<> template class.
-///
-template <typename ParametersParseCallableT>
-auto parsePassParameters(ParametersParseCallableT &&Parser, StringRef Name,
-                         StringRef PassName) -> decltype(Parser(StringRef{})) {
-  using ParametersT = typename decltype(Parser(StringRef{}))::value_type;
-
-  StringRef Params = Name;
-  if (!Params.consume_front(PassName)) {
-    assert(false &&
-           "unable to strip pass name from parametrized pass specification");
-  }
-  if (Params.empty())
-    return ParametersT{};
-  if (!Params.consume_front("<") || !Params.consume_back(">")) {
-    assert(false && "invalid format for parametrized pass name");
-  }
-
-  Expected<ParametersT> Result = Parser(Params);
-  assert((Result || Result.template errorIsA<StringError>()) &&
-         "Pass parameter parser can only return StringErrors.");
-  return std::move(Result);
-}
-
-/// Parser of parameters for LoopUnroll pass.
-Expected<LoopUnrollOptions> parseLoopUnrollOptions(StringRef Params) {
-  LoopUnrollOptions UnrollOpts;
-  while (!Params.empty()) {
-    StringRef ParamName;
-    std::tie(ParamName, Params) = Params.split(';');
-    int OptLevel = StringSwitch<int>(ParamName)
-                       .Case("O0", 0)
-                       .Case("O1", 1)
-                       .Case("O2", 2)
-                       .Case("O3", 3)
-                       .Default(-1);
-    if (OptLevel >= 0) {
-      UnrollOpts.setOptLevel(OptLevel);
-      continue;
-    }
-
-    bool Enable = !ParamName.consume_front("no-");
-    if (ParamName == "partial") {
-      UnrollOpts.setPartial(Enable);
-    } else if (ParamName == "peeling") {
-      UnrollOpts.setPeeling(Enable);
-    } else if (ParamName == "runtime") {
-      UnrollOpts.setRuntime(Enable);
-    } else if (ParamName == "upperbound") {
-      UnrollOpts.setUpperBound(Enable);
-    } else {
-      return make_error<StringError>(
-          formatv("invalid LoopUnrollPass parameter '{0}' ", ParamName).str(),
-          inconvertibleErrorCode());
-    }
-  }
-  return UnrollOpts;
-}
-
-} // namespace
-
-/// Tests whether a pass name starts with a valid prefix for a default pipeline
-/// alias.
-static bool startsWithDefaultPipelineAliasPrefix(StringRef Name) {
-  return Name.startswith("default") || Name.startswith("thinlto") ||
-         Name.startswith("lto");
-}
-
-/// Tests whether registered callbacks will accept a given pass name.
-///
-/// When parsing a pipeline text, the type of the outermost pipeline may be
-/// omitted, in which case the type is automatically determined from the first
-/// pass name in the text. This may be a name that is handled through one of the
-/// callbacks. We check this through the oridinary parsing callbacks by setting
-/// up a dummy PassManager in order to not force the client to also handle this
-/// type of query.
-template <typename PassManagerT, typename CallbacksT>
-static bool callbacksAcceptPassName(StringRef Name, CallbacksT &Callbacks) {
-  if (!Callbacks.empty()) {
-    PassManagerT DummyPM;
-    for (auto &CB : Callbacks)
-      if (CB(Name, DummyPM, {}))
-        return true;
-  }
-  return false;
-}
-
-template <typename CallbacksT>
-static bool isModulePassName(StringRef Name, CallbacksT &Callbacks) {
-  // Manually handle aliases for pre-configured pipeline fragments.
-  if (startsWithDefaultPipelineAliasPrefix(Name))
-    return DefaultAliasRegex.match(Name);
-
-  // Explicitly handle pass manager names.
-  if (Name == "module")
-    return true;
-  if (Name == "cgscc")
-    return true;
-  if (Name == "function")
-    return true;
-
-  // Explicitly handle custom-parsed pass names.
-  if (parseRepeatPassName(Name))
-    return true;
-
-#define MODULE_PASS(NAME, CREATE_PASS)                                         \
-  if (Name == NAME)                                                            \
-    return true;
-#define MODULE_ANALYSIS(NAME, CREATE_PASS)                                     \
-  if (Name == "require<" NAME ">" || Name == "invalidate<" NAME ">")           \
-    return true;
-#include "PassRegistry.def"
-
-  return callbacksAcceptPassName<ModulePassManager>(Name, Callbacks);
-}
-
-template <typename CallbacksT>
-static bool isCGSCCPassName(StringRef Name, CallbacksT &Callbacks) {
-  // Explicitly handle pass manager names.
-  if (Name == "cgscc")
-    return true;
-  if (Name == "function")
-    return true;
-
-  // Explicitly handle custom-parsed pass names.
-  if (parseRepeatPassName(Name))
-    return true;
-  if (parseDevirtPassName(Name))
-    return true;
-
-#define CGSCC_PASS(NAME, CREATE_PASS)                                          \
-  if (Name == NAME)                                                            \
-    return true;
-#define CGSCC_ANALYSIS(NAME, CREATE_PASS)                                      \
-  if (Name == "require<" NAME ">" || Name == "invalidate<" NAME ">")           \
-    return true;
-#include "PassRegistry.def"
-
-  return callbacksAcceptPassName<CGSCCPassManager>(Name, Callbacks);
-}
-
-template <typename CallbacksT>
-static bool isFunctionPassName(StringRef Name, CallbacksT &Callbacks) {
-  // Explicitly handle pass manager names.
-  if (Name == "function")
-    return true;
-  if (Name == "loop")
-    return true;
-
-  // Explicitly handle custom-parsed pass names.
-  if (parseRepeatPassName(Name))
-    return true;
-
-#define FUNCTION_PASS(NAME, CREATE_PASS)                                       \
-  if (Name == NAME)                                                            \
-    return true;
-#define FUNCTION_PASS_WITH_PARAMS(NAME, CREATE_PASS, PARSER)                   \
-  if (checkParametrizedPassName(Name, NAME))                                   \
-    return true;
-#define FUNCTION_ANALYSIS(NAME, CREATE_PASS)                                   \
-  if (Name == "require<" NAME ">" || Name == "invalidate<" NAME ">")           \
-    return true;
-#include "PassRegistry.def"
-
-  return callbacksAcceptPassName<FunctionPassManager>(Name, Callbacks);
-}
-
-template <typename CallbacksT>
-static bool isLoopPassName(StringRef Name, CallbacksT &Callbacks) {
-  // Explicitly handle pass manager names.
-  if (Name == "loop")
-    return true;
-
-  // Explicitly handle custom-parsed pass names.
-  if (parseRepeatPassName(Name))
-    return true;
-
-#define LOOP_PASS(NAME, CREATE_PASS)                                           \
-  if (Name == NAME)                                                            \
-    return true;
-#define LOOP_ANALYSIS(NAME, CREATE_PASS)                                       \
-  if (Name == "require<" NAME ">" || Name == "invalidate<" NAME ">")           \
-    return true;
-#include "PassRegistry.def"
-
-  return callbacksAcceptPassName<LoopPassManager>(Name, Callbacks);
-}
-
-Optional<std::vector<PassBuilder::PipelineElement>>
-PassBuilder::parsePipelineText(StringRef Text) {
-  std::vector<PipelineElement> ResultPipeline;
-
-  SmallVector<std::vector<PipelineElement> *, 4> PipelineStack = {
-      &ResultPipeline};
-  for (;;) {
-    std::vector<PipelineElement> &Pipeline = *PipelineStack.back();
-    size_t Pos = Text.find_first_of(",()");
-    Pipeline.push_back({Text.substr(0, Pos), {}});
-
-    // If we have a single terminating name, we're done.
-    if (Pos == Text.npos)
-      break;
-
-    char Sep = Text[Pos];
-    Text = Text.substr(Pos + 1);
-    if (Sep == ',')
-      // Just a name ending in a comma, continue.
-      continue;
-
-    if (Sep == '(') {
-      // Push the inner pipeline onto the stack to continue processing.
-      PipelineStack.push_back(&Pipeline.back().InnerPipeline);
-      continue;
-    }
-
-    assert(Sep == ')' && "Bogus separator!");
-    // When handling the close parenthesis, we greedily consume them to avoid
-    // empty strings in the pipeline.
-    do {
-      // If we try to pop the outer pipeline we have unbalanced parentheses.
-      if (PipelineStack.size() == 1)
-        return None;
-
-      PipelineStack.pop_back();
-    } while (Text.consume_front(")"));
-
-    // Check if we've finished parsing.
-    if (Text.empty())
-      break;
-
-    // Otherwise, the end of an inner pipeline always has to be followed by
-    // a comma, and then we can continue.
-    if (!Text.consume_front(","))
-      return None;
-  }
-
-  if (PipelineStack.size() > 1)
-    // Unbalanced paretheses.
-    return None;
-
-  assert(PipelineStack.back() == &ResultPipeline &&
-         "Wrong pipeline at the bottom of the stack!");
-  return {std::move(ResultPipeline)};
-}
-
-Error PassBuilder::parseModulePass(ModulePassManager &MPM,
-                                   const PipelineElement &E,
-                                   bool VerifyEachPass, bool DebugLogging) {
-  auto &Name = E.Name;
-  auto &InnerPipeline = E.InnerPipeline;
-
-  // First handle complex passes like the pass managers which carry pipelines.
-  if (!InnerPipeline.empty()) {
-    if (Name == "module") {
-      ModulePassManager NestedMPM(DebugLogging);
-      if (auto Err = parseModulePassPipeline(NestedMPM, InnerPipeline,
-                                             VerifyEachPass, DebugLogging))
-        return Err;
-      MPM.addPass(std::move(NestedMPM));
-      return Error::success();
-    }
-    if (Name == "cgscc") {
-      CGSCCPassManager CGPM(DebugLogging);
-      if (auto Err = parseCGSCCPassPipeline(CGPM, InnerPipeline, VerifyEachPass,
-                                            DebugLogging))
-        return Err;
-      MPM.addPass(createModuleToPostOrderCGSCCPassAdaptor(std::move(CGPM)));
-      return Error::success();
-    }
-    if (Name == "function") {
-      FunctionPassManager FPM(DebugLogging);
-      if (auto Err = parseFunctionPassPipeline(FPM, InnerPipeline,
-                                               VerifyEachPass, DebugLogging))
-        return Err;
-      MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
-      return Error::success();
-    }
-    if (auto Count = parseRepeatPassName(Name)) {
-      ModulePassManager NestedMPM(DebugLogging);
-      if (auto Err = parseModulePassPipeline(NestedMPM, InnerPipeline,
-                                             VerifyEachPass, DebugLogging))
-        return Err;
-      MPM.addPass(createRepeatedPass(*Count, std::move(NestedMPM)));
-      return Error::success();
-    }
-
-    for (auto &C : ModulePipelineParsingCallbacks)
-      if (C(Name, MPM, InnerPipeline))
-        return Error::success();
-
-    // Normal passes can't have pipelines.
-    return make_error<StringError>(
-        formatv("invalid use of '{0}' pass as module pipeline", Name).str(),
-        inconvertibleErrorCode());
-    ;
-  }
-
-  // Manually handle aliases for pre-configured pipeline fragments.
-  if (startsWithDefaultPipelineAliasPrefix(Name)) {
-    SmallVector<StringRef, 3> Matches;
-    if (!DefaultAliasRegex.match(Name, &Matches))
-      return make_error<StringError>(
-          formatv("unknown default pipeline alias '{0}'", Name).str(),
-          inconvertibleErrorCode());
-
-    assert(Matches.size() == 3 && "Must capture two matched strings!");
-
-    OptimizationLevel L = StringSwitch<OptimizationLevel>(Matches[2])
-                              .Case("O0", O0)
-                              .Case("O1", O1)
-                              .Case("O2", O2)
-                              .Case("O3", O3)
-                              .Case("Os", Os)
-                              .Case("Oz", Oz);
-    if (L == O0)
-      // At O0 we do nothing at all!
-      return Error::success();
-
-    if (Matches[1] == "default") {
-      MPM.addPass(buildPerModuleDefaultPipeline(L, DebugLogging));
-    } else if (Matches[1] == "thinlto-pre-link") {
-      MPM.addPass(buildThinLTOPreLinkDefaultPipeline(L, DebugLogging));
-    } else if (Matches[1] == "thinlto") {
-      MPM.addPass(buildThinLTODefaultPipeline(L, DebugLogging, nullptr));
-    } else if (Matches[1] == "lto-pre-link") {
-      MPM.addPass(buildLTOPreLinkDefaultPipeline(L, DebugLogging));
-    } else {
-      assert(Matches[1] == "lto" && "Not one of the matched options!");
-      MPM.addPass(buildLTODefaultPipeline(L, DebugLogging, nullptr));
-    }
-    return Error::success();
-  }
-
-  // Finally expand the basic registered passes from the .inc file.
-#define MODULE_PASS(NAME, CREATE_PASS)                                         \
-  if (Name == NAME) {                                                          \
-    MPM.addPass(CREATE_PASS);                                                  \
-    return Error::success();                                                   \
-  }
-#define MODULE_ANALYSIS(NAME, CREATE_PASS)                                     \
-  if (Name == "require<" NAME ">") {                                           \
-    MPM.addPass(                                                               \
-        RequireAnalysisPass<                                                   \
-            std::remove_reference<decltype(CREATE_PASS)>::type, Module>());    \
-    return Error::success();                                                   \
-  }                                                                            \
-  if (Name == "invalidate<" NAME ">") {                                        \
-    MPM.addPass(InvalidateAnalysisPass<                                        \
-                std::remove_reference<decltype(CREATE_PASS)>::type>());        \
-    return Error::success();                                                   \
-  }
-#include "PassRegistry.def"
-
-  for (auto &C : ModulePipelineParsingCallbacks)
-    if (C(Name, MPM, InnerPipeline))
-      return Error::success();
-  return make_error<StringError>(
-      formatv("unknown module pass '{0}'", Name).str(),
-      inconvertibleErrorCode());
-}
-
-Error PassBuilder::parseCGSCCPass(CGSCCPassManager &CGPM,
-                                  const PipelineElement &E, bool VerifyEachPass,
-                                  bool DebugLogging) {
-  auto &Name = E.Name;
-  auto &InnerPipeline = E.InnerPipeline;
-
-  // First handle complex passes like the pass managers which carry pipelines.
-  if (!InnerPipeline.empty()) {
-    if (Name == "cgscc") {
-      CGSCCPassManager NestedCGPM(DebugLogging);
-      if (auto Err = parseCGSCCPassPipeline(NestedCGPM, InnerPipeline,
-                                            VerifyEachPass, DebugLogging))
-        return Err;
-      // Add the nested pass manager with the appropriate adaptor.
-      CGPM.addPass(std::move(NestedCGPM));
-      return Error::success();
-    }
-    if (Name == "function") {
-      FunctionPassManager FPM(DebugLogging);
-      if (auto Err = parseFunctionPassPipeline(FPM, InnerPipeline,
-                                               VerifyEachPass, DebugLogging))
-        return Err;
-      // Add the nested pass manager with the appropriate adaptor.
-      CGPM.addPass(createCGSCCToFunctionPassAdaptor(std::move(FPM)));
-      return Error::success();
-    }
-    if (auto Count = parseRepeatPassName(Name)) {
-      CGSCCPassManager NestedCGPM(DebugLogging);
-      if (auto Err = parseCGSCCPassPipeline(NestedCGPM, InnerPipeline,
-                                            VerifyEachPass, DebugLogging))
-        return Err;
-      CGPM.addPass(createRepeatedPass(*Count, std::move(NestedCGPM)));
-      return Error::success();
-    }
-    if (auto MaxRepetitions = parseDevirtPassName(Name)) {
-      CGSCCPassManager NestedCGPM(DebugLogging);
-      if (auto Err = parseCGSCCPassPipeline(NestedCGPM, InnerPipeline,
-                                            VerifyEachPass, DebugLogging))
-        return Err;
-      CGPM.addPass(
-          createDevirtSCCRepeatedPass(std::move(NestedCGPM), *MaxRepetitions));
-      return Error::success();
-    }
-
-    for (auto &C : CGSCCPipelineParsingCallbacks)
-      if (C(Name, CGPM, InnerPipeline))
-        return Error::success();
-
-    // Normal passes can't have pipelines.
-    return make_error<StringError>(
-        formatv("invalid use of '{0}' pass as cgscc pipeline", Name).str(),
-        inconvertibleErrorCode());
-  }
-
-// Now expand the basic registered passes from the .inc file.
-#define CGSCC_PASS(NAME, CREATE_PASS)                                          \
-  if (Name == NAME) {                                                          \
-    CGPM.addPass(CREATE_PASS);                                                 \
-    return Error::success();                                                   \
-  }
-#define CGSCC_ANALYSIS(NAME, CREATE_PASS)                                      \
-  if (Name == "require<" NAME ">") {                                           \
-    CGPM.addPass(RequireAnalysisPass<                                          \
-                 std::remove_reference<decltype(CREATE_PASS)>::type,           \
-                 LazyCallGraph::SCC, CGSCCAnalysisManager, LazyCallGraph &,    \
-                 CGSCCUpdateResult &>());                                      \
-    return Error::success();                                                   \
-  }                                                                            \
-  if (Name == "invalidate<" NAME ">") {                                        \
-    CGPM.addPass(InvalidateAnalysisPass<                                       \
-                 std::remove_reference<decltype(CREATE_PASS)>::type>());       \
-    return Error::success();                                                   \
-  }
-#include "PassRegistry.def"
-
-  for (auto &C : CGSCCPipelineParsingCallbacks)
-    if (C(Name, CGPM, InnerPipeline))
-      return Error::success();
-  return make_error<StringError>(
-      formatv("unknown cgscc pass '{0}'", Name).str(),
-      inconvertibleErrorCode());
-}
-
-Error PassBuilder::parseFunctionPass(FunctionPassManager &FPM,
-                                     const PipelineElement &E,
-                                     bool VerifyEachPass, bool DebugLogging) {
-  auto &Name = E.Name;
-  auto &InnerPipeline = E.InnerPipeline;
-
-  // First handle complex passes like the pass managers which carry pipelines.
-  if (!InnerPipeline.empty()) {
-    if (Name == "function") {
-      FunctionPassManager NestedFPM(DebugLogging);
-      if (auto Err = parseFunctionPassPipeline(NestedFPM, InnerPipeline,
-                                               VerifyEachPass, DebugLogging))
-        return Err;
-      // Add the nested pass manager with the appropriate adaptor.
-      FPM.addPass(std::move(NestedFPM));
-      return Error::success();
-    }
-    if (Name == "loop") {
-      LoopPassManager LPM(DebugLogging);
-      if (auto Err = parseLoopPassPipeline(LPM, InnerPipeline, VerifyEachPass,
-                                           DebugLogging))
-        return Err;
-      // Add the nested pass manager with the appropriate adaptor.
-      FPM.addPass(
-          createFunctionToLoopPassAdaptor(std::move(LPM), DebugLogging));
-      return Error::success();
-    }
-    if (auto Count = parseRepeatPassName(Name)) {
-      FunctionPassManager NestedFPM(DebugLogging);
-      if (auto Err = parseFunctionPassPipeline(NestedFPM, InnerPipeline,
-                                               VerifyEachPass, DebugLogging))
-        return Err;
-      FPM.addPass(createRepeatedPass(*Count, std::move(NestedFPM)));
-      return Error::success();
-    }
-
-    for (auto &C : FunctionPipelineParsingCallbacks)
-      if (C(Name, FPM, InnerPipeline))
-        return Error::success();
-
-    // Normal passes can't have pipelines.
-    return make_error<StringError>(
-        formatv("invalid use of '{0}' pass as function pipeline", Name).str(),
-        inconvertibleErrorCode());
-  }
-
-// Now expand the basic registered passes from the .inc file.
-#define FUNCTION_PASS(NAME, CREATE_PASS)                                       \
-  if (Name == NAME) {                                                          \
-    FPM.addPass(CREATE_PASS);                                                  \
-    return Error::success();                                                   \
-  }
-#define FUNCTION_PASS_WITH_PARAMS(NAME, CREATE_PASS, PARSER)                   \
-  if (checkParametrizedPassName(Name, NAME)) {                                 \
-    auto Params = parsePassParameters(PARSER, Name, NAME);                     \
-    if (!Params)                                                               \
-      return Params.takeError();                                               \
-    FPM.addPass(CREATE_PASS(Params.get()));                                    \
-    return Error::success();                                                   \
-  }
-#define FUNCTION_ANALYSIS(NAME, CREATE_PASS)                                   \
-  if (Name == "require<" NAME ">") {                                           \
-    FPM.addPass(                                                               \
-        RequireAnalysisPass<                                                   \
-            std::remove_reference<decltype(CREATE_PASS)>::type, Function>());  \
-    return Error::success();                                                   \
-  }                                                                            \
-  if (Name == "invalidate<" NAME ">") {                                        \
-    FPM.addPass(InvalidateAnalysisPass<                                        \
-                std::remove_reference<decltype(CREATE_PASS)>::type>());        \
-    return Error::success();                                                   \
-  }
-#include "PassRegistry.def"
-
-  for (auto &C : FunctionPipelineParsingCallbacks)
-    if (C(Name, FPM, InnerPipeline))
-      return Error::success();
-  return make_error<StringError>(
-      formatv("unknown function pass '{0}'", Name).str(),
-      inconvertibleErrorCode());
-}
-
-Error PassBuilder::parseLoopPass(LoopPassManager &LPM, const PipelineElement &E,
-                                 bool VerifyEachPass, bool DebugLogging) {
-  StringRef Name = E.Name;
-  auto &InnerPipeline = E.InnerPipeline;
-
-  // First handle complex passes like the pass managers which carry pipelines.
-  if (!InnerPipeline.empty()) {
-    if (Name == "loop") {
-      LoopPassManager NestedLPM(DebugLogging);
-      if (auto Err = parseLoopPassPipeline(NestedLPM, InnerPipeline,
-                                           VerifyEachPass, DebugLogging))
-        return Err;
-      // Add the nested pass manager with the appropriate adaptor.
-      LPM.addPass(std::move(NestedLPM));
-      return Error::success();
-    }
-    if (auto Count = parseRepeatPassName(Name)) {
-      LoopPassManager NestedLPM(DebugLogging);
-      if (auto Err = parseLoopPassPipeline(NestedLPM, InnerPipeline,
-                                           VerifyEachPass, DebugLogging))
-        return Err;
-      LPM.addPass(createRepeatedPass(*Count, std::move(NestedLPM)));
-      return Error::success();
-    }
-
-    for (auto &C : LoopPipelineParsingCallbacks)
-      if (C(Name, LPM, InnerPipeline))
-        return Error::success();
-
-    // Normal passes can't have pipelines.
-    return make_error<StringError>(
-        formatv("invalid use of '{0}' pass as loop pipeline", Name).str(),
-        inconvertibleErrorCode());
-  }
-
-// Now expand the basic registered passes from the .inc file.
-#define LOOP_PASS(NAME, CREATE_PASS)                                           \
-  if (Name == NAME) {                                                          \
-    LPM.addPass(CREATE_PASS);                                                  \
-    return Error::success();                                                   \
-  }
-#define LOOP_ANALYSIS(NAME, CREATE_PASS)                                       \
-  if (Name == "require<" NAME ">") {                                           \
-    LPM.addPass(RequireAnalysisPass<                                           \
-                std::remove_reference<decltype(CREATE_PASS)>::type, Loop,      \
-                LoopAnalysisManager, LoopStandardAnalysisResults &,            \
-                LPMUpdater &>());                                              \
-    return Error::success();                                                   \
-  }                                                                            \
-  if (Name == "invalidate<" NAME ">") {                                        \
-    LPM.addPass(InvalidateAnalysisPass<                                        \
-                std::remove_reference<decltype(CREATE_PASS)>::type>());        \
-    return Error::success();                                                   \
-  }
-#include "PassRegistry.def"
-
-  for (auto &C : LoopPipelineParsingCallbacks)
-    if (C(Name, LPM, InnerPipeline))
-      return Error::success();
-  return make_error<StringError>(formatv("unknown loop pass '{0}'", Name).str(),
-                                 inconvertibleErrorCode());
-}
-
-bool PassBuilder::parseAAPassName(AAManager &AA, StringRef Name) {
-#define MODULE_ALIAS_ANALYSIS(NAME, CREATE_PASS)                               \
-  if (Name == NAME) {                                                          \
-    AA.registerModuleAnalysis<                                                 \
-        std::remove_reference<decltype(CREATE_PASS)>::type>();                 \
-    return true;                                                               \
-  }
-#define FUNCTION_ALIAS_ANALYSIS(NAME, CREATE_PASS)                             \
-  if (Name == NAME) {                                                          \
-    AA.registerFunctionAnalysis<                                               \
-        std::remove_reference<decltype(CREATE_PASS)>::type>();                 \
-    return true;                                                               \
-  }
-#include "PassRegistry.def"
-
-  for (auto &C : AAParsingCallbacks)
-    if (C(Name, AA))
-      return true;
-  return false;
-}
-
-Error PassBuilder::parseLoopPassPipeline(LoopPassManager &LPM,
-                                         ArrayRef<PipelineElement> Pipeline,
-                                         bool VerifyEachPass,
-                                         bool DebugLogging) {
-  for (const auto &Element : Pipeline) {
-    if (auto Err = parseLoopPass(LPM, Element, VerifyEachPass, DebugLogging))
-      return Err;
-    // FIXME: No verifier support for Loop passes!
-  }
-  return Error::success();
-}
-
-Error PassBuilder::parseFunctionPassPipeline(FunctionPassManager &FPM,
-                                             ArrayRef<PipelineElement> Pipeline,
-                                             bool VerifyEachPass,
-                                             bool DebugLogging) {
-  for (const auto &Element : Pipeline) {
-    if (auto Err =
-            parseFunctionPass(FPM, Element, VerifyEachPass, DebugLogging))
-      return Err;
-    if (VerifyEachPass)
-      FPM.addPass(VerifierPass());
-  }
-  return Error::success();
-}
-
-Error PassBuilder::parseCGSCCPassPipeline(CGSCCPassManager &CGPM,
-                                          ArrayRef<PipelineElement> Pipeline,
-                                          bool VerifyEachPass,
-                                          bool DebugLogging) {
-  for (const auto &Element : Pipeline) {
-    if (auto Err = parseCGSCCPass(CGPM, Element, VerifyEachPass, DebugLogging))
-      return Err;
-    // FIXME: No verifier support for CGSCC passes!
-  }
-  return Error::success();
-}
-
-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); });
-}
-
-Error PassBuilder::parseModulePassPipeline(ModulePassManager &MPM,
-                                           ArrayRef<PipelineElement> Pipeline,
-                                           bool VerifyEachPass,
-                                           bool DebugLogging) {
-  for (const auto &Element : Pipeline) {
-    if (auto Err = parseModulePass(MPM, Element, VerifyEachPass, DebugLogging))
-      return Err;
-    if (VerifyEachPass)
-      MPM.addPass(VerifierPass());
-  }
-  return Error::success();
-}
-
-// Primary pass pipeline description parsing routine for a \c ModulePassManager
-// FIXME: Should this routine accept a TargetMachine or require the caller to
-// pre-populate the analysis managers with target-specific stuff?
-Error PassBuilder::parsePassPipeline(ModulePassManager &MPM,
-                                     StringRef PipelineText,
-                                     bool VerifyEachPass, bool DebugLogging) {
-  auto Pipeline = parsePipelineText(PipelineText);
-  if (!Pipeline || Pipeline->empty())
-    return make_error<StringError>(
-        formatv("invalid pipeline '{0}'", PipelineText).str(),
-        inconvertibleErrorCode());
-
-  // If the first name isn't at the module layer, wrap the pipeline up
-  // automatically.
-  StringRef FirstName = Pipeline->front().Name;
-
-  if (!isModulePassName(FirstName, ModulePipelineParsingCallbacks)) {
-    if (isCGSCCPassName(FirstName, CGSCCPipelineParsingCallbacks)) {
-      Pipeline = {{"cgscc", std::move(*Pipeline)}};
-    } else if (isFunctionPassName(FirstName,
-                                  FunctionPipelineParsingCallbacks)) {
-      Pipeline = {{"function", std::move(*Pipeline)}};
-    } else if (isLoopPassName(FirstName, LoopPipelineParsingCallbacks)) {
-      Pipeline = {{"function", {{"loop", std::move(*Pipeline)}}}};
-    } else {
-      for (auto &C : TopLevelPipelineParsingCallbacks)
-        if (C(MPM, *Pipeline, VerifyEachPass, DebugLogging))
-          return Error::success();
-
-      // Unknown pass or pipeline name!
-      auto &InnerPipeline = Pipeline->front().InnerPipeline;
-      return make_error<StringError>(
-          formatv("unknown {0} name '{1}'",
-                  (InnerPipeline.empty() ? "pass" : "pipeline"), FirstName)
-              .str(),
-          inconvertibleErrorCode());
-    }
-  }
-
-  if (auto Err =
-          parseModulePassPipeline(MPM, *Pipeline, VerifyEachPass, DebugLogging))
-    return Err;
-  return Error::success();
-}
-
-// Primary pass pipeline description parsing routine for a \c CGSCCPassManager
-Error PassBuilder::parsePassPipeline(CGSCCPassManager &CGPM,
-                                     StringRef PipelineText,
-                                     bool VerifyEachPass, bool DebugLogging) {
-  auto Pipeline = parsePipelineText(PipelineText);
-  if (!Pipeline || Pipeline->empty())
-    return make_error<StringError>(
-        formatv("invalid pipeline '{0}'", PipelineText).str(),
-        inconvertibleErrorCode());
-
-  StringRef FirstName = Pipeline->front().Name;
-  if (!isCGSCCPassName(FirstName, CGSCCPipelineParsingCallbacks))
-    return make_error<StringError>(
-        formatv("unknown cgscc pass '{0}' in pipeline '{1}'", FirstName,
-                PipelineText)
-            .str(),
-        inconvertibleErrorCode());
-
-  if (auto Err =
-          parseCGSCCPassPipeline(CGPM, *Pipeline, VerifyEachPass, DebugLogging))
-    return Err;
-  return Error::success();
-}
-
-// Primary pass pipeline description parsing routine for a \c
-// FunctionPassManager
-Error PassBuilder::parsePassPipeline(FunctionPassManager &FPM,
-                                     StringRef PipelineText,
-                                     bool VerifyEachPass, bool DebugLogging) {
-  auto Pipeline = parsePipelineText(PipelineText);
-  if (!Pipeline || Pipeline->empty())
-    return make_error<StringError>(
-        formatv("invalid pipeline '{0}'", PipelineText).str(),
-        inconvertibleErrorCode());
-
-  StringRef FirstName = Pipeline->front().Name;
-  if (!isFunctionPassName(FirstName, FunctionPipelineParsingCallbacks))
-    return make_error<StringError>(
-        formatv("unknown function pass '{0}' in pipeline '{1}'", FirstName,
-                PipelineText)
-            .str(),
-        inconvertibleErrorCode());
-
-  if (auto Err = parseFunctionPassPipeline(FPM, *Pipeline, VerifyEachPass,
-                                           DebugLogging))
-    return Err;
-  return Error::success();
-}
-
-// Primary pass pipeline description parsing routine for a \c LoopPassManager
-Error PassBuilder::parsePassPipeline(LoopPassManager &CGPM,
-                                     StringRef PipelineText,
-                                     bool VerifyEachPass, bool DebugLogging) {
-  auto Pipeline = parsePipelineText(PipelineText);
-  if (!Pipeline || Pipeline->empty())
-    return make_error<StringError>(
-        formatv("invalid pipeline '{0}'", PipelineText).str(),
-        inconvertibleErrorCode());
-
-  if (auto Err =
-          parseLoopPassPipeline(CGPM, *Pipeline, VerifyEachPass, DebugLogging))
-    return Err;
-
-  return Error::success();
-}
-
-Error PassBuilder::parseAAPipeline(AAManager &AA, StringRef PipelineText) {
-  // If the pipeline just consists of the word 'default' just replace the AA
-  // manager with our default one.
-  if (PipelineText == "default") {
-    AA = buildDefaultAAPipeline();
-    return Error::success();
-  }
-
-  while (!PipelineText.empty()) {
-    StringRef Name;
-    std::tie(Name, PipelineText) = PipelineText.split(',');
-    if (!parseAAPassName(AA, Name))
-      return make_error<StringError>(
-          formatv("unknown alias analysis name '{0}'", Name).str(),
-          inconvertibleErrorCode());
-  }
-
-  return Error::success();
-}