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📄 AliasAnalysis.h(51.98 KB)
📄 AliasAnalysisEvaluator.h(2.7 KB)
📄 AliasSetTracker.h(15.42 KB)
📄 AssumeBundleQueries.h(6.66 KB)
📄 AssumptionCache.h(8.39 KB)
📄 BasicAliasAnalysis.h(10.2 KB)
📄 BlockFrequencyInfo.h(5.59 KB)
📄 BlockFrequencyInfoImpl.h(56.46 KB)
📄 BranchProbabilityInfo.h(10.1 KB)
📄 CFG.h(7.76 KB)
📄 CFGPrinter.h(9.31 KB)
📄 CFLAliasAnalysisUtils.h(1.66 KB)
📄 CFLAndersAliasAnalysis.h(3.97 KB)
📄 CFLSteensAliasAnalysis.h(4.58 KB)
📄 CGSCCPassManager.h(41.2 KB)
📄 CallGraph.h(18.88 KB)
📄 CallGraphSCCPass.h(5.01 KB)
📄 CallPrinter.h(799 B)
📄 CaptureTracking.h(4.78 KB)
📄 CmpInstAnalysis.h(2.57 KB)
📄 CodeMetrics.h(3.15 KB)
📄 ConstantFolding.h(8.01 KB)
📄 DDG.h(19.15 KB)
📄 DOTGraphTraitsPass.h(5.5 KB)
📄 DemandedBits.h(4.07 KB)
📄 DependenceAnalysis.h(41.83 KB)
📄 DependenceGraphBuilder.h(7.74 KB)
📄 DivergenceAnalysis.h(7.38 KB)
📄 DomPrinter.h(1.04 KB)
📄 DomTreeUpdater.h(13.2 KB)
📄 DominanceFrontier.h(6.63 KB)
📄 DominanceFrontierImpl.h(7.12 KB)
📄 EHPersonalities.h(3.22 KB)
📄 GlobalsModRef.h(5.96 KB)
📄 GuardUtils.h(2.11 KB)
📄 HeatUtils.h(1.16 KB)
📄 IVDescriptors.h(14.56 KB)
📄 IVUsers.h(6.07 KB)
📄 IndirectCallPromotionAnalysis.h(2.61 KB)
📄 IndirectCallVisitor.h(1.16 KB)
📄 InlineAdvisor.h(8.71 KB)
📄 InlineCost.h(11.33 KB)
📄 InlineFeaturesAnalysis.h(1.5 KB)
📄 InlineModelFeatureMaps.h(3.41 KB)
📄 InlineSizeEstimatorAnalysis.h(1.07 KB)
📄 InstructionPrecedenceTracking.h(5.9 KB)
📄 InstructionSimplify.h(13.36 KB)
📄 Interval.h(4.84 KB)
📄 IntervalIterator.h(10.64 KB)
📄 IntervalPartition.h(4.05 KB)
📄 IteratedDominanceFrontier.h(2.62 KB)
📄 LazyBlockFrequencyInfo.h(4.34 KB)
📄 LazyBranchProbabilityInfo.h(4.21 KB)
📄 LazyCallGraph.h(50.13 KB)
📄 LazyValueInfo.h(5.4 KB)
📄 LegacyDivergenceAnalysis.h(2.53 KB)
📄 Lint.h(1.35 KB)
📄 Loads.h(7.86 KB)
📄 LoopAccessAnalysis.h(29.75 KB)
📄 LoopAnalysisManager.h(5.83 KB)
📄 LoopCacheAnalysis.h(11.91 KB)
📄 LoopInfo.h(48.27 KB)
📄 LoopInfoImpl.h(27.14 KB)
📄 LoopIterator.h(8.83 KB)
📄 LoopNestAnalysis.h(5.61 KB)
📄 LoopPass.h(4.29 KB)
📄 LoopUnrollAnalyzer.h(3.42 KB)
📄 MLInlineAdvisor.h(3.48 KB)
📄 MLModelRunner.h(1.16 KB)
📄 MemoryBuiltins.h(13.42 KB)
📄 MemoryDependenceAnalysis.h(20.82 KB)
📄 MemoryLocation.h(10.99 KB)
📄 MemorySSA.h(45.92 KB)
📄 MemorySSAUpdater.h(14.55 KB)
📄 ModuleSummaryAnalysis.h(3.44 KB)
📄 MustExecute.h(20.2 KB)
📄 ObjCARCAliasAnalysis.h(3.35 KB)
📄 ObjCARCAnalysisUtils.h(10.22 KB)
📄 ObjCARCInstKind.h(4.87 KB)
📄 OptimizationRemarkEmitter.h(5.93 KB)
📄 PHITransAddr.h(4.77 KB)
📄 Passes.h(3.88 KB)
📄 PhiValues.h(5.25 KB)
📄 PostDominators.h(3.41 KB)
📄 ProfileSummaryInfo.h(9.3 KB)
📄 PtrUseVisitor.h(9.96 KB)
📄 RegionInfo.h(35.23 KB)
📄 RegionInfoImpl.h(25.16 KB)
📄 RegionIterator.h(14.07 KB)
📄 RegionPass.h(4.05 KB)
📄 RegionPrinter.h(2.25 KB)
📄 ScalarEvolution.h(89.21 KB)
📄 ScalarEvolutionAliasAnalysis.h(2.09 KB)
📄 ScalarEvolutionDivision.h(2.48 KB)
📄 ScalarEvolutionExpressions.h(28.61 KB)
📄 ScalarEvolutionNormalization.h(2.47 KB)
📄 ScopedNoAliasAA.h(2.83 KB)
📄 SparsePropagation.h(19.43 KB)
📄 StackLifetime.h(6.16 KB)
📄 StackSafetyAnalysis.h(4.91 KB)
📄 SyncDependenceAnalysis.h(2.85 KB)
📄 SyntheticCountsUtils.h(1.85 KB)
📄 TargetFolder.h(11.04 KB)
📄 TargetLibraryInfo.def(55.35 KB)
📄 TargetLibraryInfo.h(16.86 KB)
📄 TargetTransformInfo.h(96.51 KB)
📄 TargetTransformInfoImpl.h(37.63 KB)
📄 Trace.h(4.1 KB)
📄 TypeBasedAliasAnalysis.h(3.05 KB)
📄 TypeMetadataUtils.h(1.94 KB)
📁 Utils
📄 ValueLattice.h(15.14 KB)
📄 ValueLatticeUtils.h(1.66 KB)
📄 ValueTracking.h(35.82 KB)
📄 VecFuncs.def(10.94 KB)
📄 VectorUtils.h(37.26 KB)

Editing: ProfileSummaryInfo.h

//===- llvm/Analysis/ProfileSummaryInfo.h - profile summary ---*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file contains a pass that provides access to profile summary
// information.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_ANALYSIS_PROFILE_SUMMARY_INFO_H
#define LLVM_ANALYSIS_PROFILE_SUMMARY_INFO_H

#include "llvm/ADT/DenseMap.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/ProfileSummary.h"
#include "llvm/Pass.h"
#include <memory>

namespace llvm {
class BasicBlock;
class BlockFrequencyInfo;
class CallBase;
class Function;
class ProfileSummary;

/// Analysis providing profile information.
///
/// This is an immutable analysis pass that provides ability to query global
/// (program-level) profile information. The main APIs are isHotCount and
/// isColdCount that tells whether a given profile count is considered hot/cold
/// based on the profile summary. This also provides convenience methods to
/// check whether a function is hot or cold.

// FIXME: Provide convenience methods to determine hotness/coldness of other IR
// units. This would require making this depend on BFI.
class ProfileSummaryInfo {
private:
  Module &M;
  std::unique_ptr<ProfileSummary> Summary;
  void computeThresholds();
  // Count thresholds to answer isHotCount and isColdCount queries.
  Optional<uint64_t> HotCountThreshold, ColdCountThreshold;
  // True if the working set size of the code is considered huge,
  // because the number of profile counts required to reach the hot
  // percentile is above a huge threshold.
  Optional<bool> HasHugeWorkingSetSize;
  // True if the working set size of the code is considered large,
  // because the number of profile counts required to reach the hot
  // percentile is above a large threshold.
  Optional<bool> HasLargeWorkingSetSize;
  // Compute the threshold for a given cutoff.
  Optional<uint64_t> computeThreshold(int PercentileCutoff) const;
  // The map that caches the threshold values. The keys are the percentile
  // cutoff values and the values are the corresponding threshold values.
  mutable DenseMap<int, uint64_t> ThresholdCache;

public:
  ProfileSummaryInfo(Module &M) : M(M) { refresh(); }
  ProfileSummaryInfo(ProfileSummaryInfo &&Arg) = default;

/// If no summary is present, attempt to refresh.
  void refresh();

/// Returns true if profile summary is available.
  bool hasProfileSummary() const { return Summary != nullptr; }

/// Returns true if module \c M has sample profile.
  bool hasSampleProfile() const {
    return hasProfileSummary() &&
           Summary->getKind() == ProfileSummary::PSK_Sample;
  }

/// Returns true if module \c M has instrumentation profile.
  bool hasInstrumentationProfile() const {
    return hasProfileSummary() &&
           Summary->getKind() == ProfileSummary::PSK_Instr;
  }

/// Returns true if module \c M has context sensitive instrumentation profile.
  bool hasCSInstrumentationProfile() const {
    return hasProfileSummary() &&
           Summary->getKind() == ProfileSummary::PSK_CSInstr;
  }

/// Handle the invalidation of this information.
  ///
  /// When used as a result of \c ProfileSummaryAnalysis this method will be
  /// called when the module this was computed for changes. Since profile
  /// summary is immutable after it is annotated on the module, we return false
  /// here.
  bool invalidate(Module &, const PreservedAnalyses &,
                  ModuleAnalysisManager::Invalidator &) {
    return false;
  }

/// Returns the profile count for \p CallInst.
  Optional<uint64_t> getProfileCount(const CallBase &CallInst,
                                     BlockFrequencyInfo *BFI,
                                     bool AllowSynthetic = false) const;
  /// Returns true if module \c M has partial-profile sample profile.
  bool hasPartialSampleProfile() const;
  /// Returns true if the working set size of the code is considered huge.
  bool hasHugeWorkingSetSize() const;
  /// Returns true if the working set size of the code is considered large.
  bool hasLargeWorkingSetSize() const;
  /// Returns true if \p F has hot function entry.
  bool isFunctionEntryHot(const Function *F) const;
  /// Returns true if \p F contains hot code.
  bool isFunctionHotInCallGraph(const Function *F,
                                BlockFrequencyInfo &BFI) const;
  /// Returns true if \p F has cold function entry.
  bool isFunctionEntryCold(const Function *F) const;
  /// Returns true if \p F contains only cold code.
  bool isFunctionColdInCallGraph(const Function *F,
                                 BlockFrequencyInfo &BFI) const;
  /// Returns true if the hotness of \p F is unknown.
  bool isFunctionHotnessUnknown(const Function &F) const;
  /// Returns true if \p F contains hot code with regard to a given hot
  /// percentile cutoff value.
  bool isFunctionHotInCallGraphNthPercentile(int PercentileCutoff,
                                             const Function *F,
                                             BlockFrequencyInfo &BFI) const;
  /// Returns true if \p F contains cold code with regard to a given cold
  /// percentile cutoff value.
  bool isFunctionColdInCallGraphNthPercentile(int PercentileCutoff,
                                              const Function *F,
                                              BlockFrequencyInfo &BFI) const;
  /// Returns true if count \p C is considered hot.
  bool isHotCount(uint64_t C) const;
  /// Returns true if count \p C is considered cold.
  bool isColdCount(uint64_t C) const;
  /// Returns true if count \p C is considered hot with regard to a given
  /// hot percentile cutoff value.
  bool isHotCountNthPercentile(int PercentileCutoff, uint64_t C) const;
  /// Returns true if count \p C is considered cold with regard to a given
  /// cold percentile cutoff value.
  bool isColdCountNthPercentile(int PercentileCutoff, uint64_t C) const;
  /// Returns true if BasicBlock \p BB is considered hot.
  bool isHotBlock(const BasicBlock *BB, BlockFrequencyInfo *BFI) const;
  /// Returns true if BasicBlock \p BB is considered cold.
  bool isColdBlock(const BasicBlock *BB, BlockFrequencyInfo *BFI) const;
  /// Returns true if BasicBlock \p BB is considered hot with regard to a given
  /// hot percentile cutoff value.
  bool isHotBlockNthPercentile(int PercentileCutoff, const BasicBlock *BB,
                               BlockFrequencyInfo *BFI) const;
  /// Returns true if BasicBlock \p BB is considered cold with regard to a given
  /// cold percentile cutoff value.
  bool isColdBlockNthPercentile(int PercentileCutoff, const BasicBlock *BB,
                                BlockFrequencyInfo *BFI) const;
  /// Returns true if the call site \p CB is considered hot.
  bool isHotCallSite(const CallBase &CB, BlockFrequencyInfo *BFI) const;
  /// Returns true if call site \p CB is considered cold.
  bool isColdCallSite(const CallBase &CB, BlockFrequencyInfo *BFI) const;
  /// Returns HotCountThreshold if set. Recompute HotCountThreshold
  /// if not set.
  uint64_t getOrCompHotCountThreshold() const;
  /// Returns ColdCountThreshold if set. Recompute HotCountThreshold
  /// if not set.
  uint64_t getOrCompColdCountThreshold() const;
  /// Returns HotCountThreshold if set.
  uint64_t getHotCountThreshold() const {
    return HotCountThreshold ? HotCountThreshold.getValue() : 0;
  }
  /// Returns ColdCountThreshold if set.
  uint64_t getColdCountThreshold() const {
    return ColdCountThreshold ? ColdCountThreshold.getValue() : 0;
  }

private:
   template <bool isHot>
   bool isFunctionHotOrColdInCallGraphNthPercentile(
       int PercentileCutoff, const Function *F, BlockFrequencyInfo &BFI) const;
   template <bool isHot>
   bool isHotOrColdCountNthPercentile(int PercentileCutoff, uint64_t C) const;
   template <bool isHot>
   bool isHotOrColdBlockNthPercentile(int PercentileCutoff,
                                      const BasicBlock *BB,
                                      BlockFrequencyInfo *BFI) const;
};

/// An analysis pass based on legacy pass manager to deliver ProfileSummaryInfo.
class ProfileSummaryInfoWrapperPass : public ImmutablePass {
  std::unique_ptr<ProfileSummaryInfo> PSI;

public:
  static char ID;
  ProfileSummaryInfoWrapperPass();

ProfileSummaryInfo &getPSI() { return *PSI; }
  const ProfileSummaryInfo &getPSI() const { return *PSI; }

bool doInitialization(Module &M) override;
  bool doFinalization(Module &M) override;
  void getAnalysisUsage(AnalysisUsage &AU) const override {
    AU.setPreservesAll();
  }
};

/// An analysis pass based on the new PM to deliver ProfileSummaryInfo.
class ProfileSummaryAnalysis
    : public AnalysisInfoMixin<ProfileSummaryAnalysis> {
public:
  typedef ProfileSummaryInfo Result;

Result run(Module &M, ModuleAnalysisManager &);

private:
  friend AnalysisInfoMixin<ProfileSummaryAnalysis>;
  static AnalysisKey Key;
};

/// Printer pass that uses \c ProfileSummaryAnalysis.
class ProfileSummaryPrinterPass
    : public PassInfoMixin<ProfileSummaryPrinterPass> {
  raw_ostream &OS;

public:
  explicit ProfileSummaryPrinterPass(raw_ostream &OS) : OS(OS) {}
  PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
};

} // end namespace llvm

#endif

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