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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: BlockFrequencyInfo.h

//===- BlockFrequencyInfo.h - Block Frequency Analysis ----------*- 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
//
//===----------------------------------------------------------------------===//
//
// Loops should be simplified before this analysis.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_ANALYSIS_BLOCKFREQUENCYINFO_H
#define LLVM_ANALYSIS_BLOCKFREQUENCYINFO_H

#include "llvm/ADT/Optional.h"
#include "llvm/IR/PassManager.h"
#include "llvm/Pass.h"
#include "llvm/Support/BlockFrequency.h"
#include <cstdint>
#include <memory>

namespace llvm {

class BasicBlock;
class BranchProbabilityInfo;
class Function;
class LoopInfo;
class Module;
class raw_ostream;
template <class BlockT> class BlockFrequencyInfoImpl;

enum PGOViewCountsType { PGOVCT_None, PGOVCT_Graph, PGOVCT_Text };

/// BlockFrequencyInfo pass uses BlockFrequencyInfoImpl implementation to
/// estimate IR basic block frequencies.
class BlockFrequencyInfo {
  using ImplType = BlockFrequencyInfoImpl<BasicBlock>;

std::unique_ptr<ImplType> BFI;

public:
  BlockFrequencyInfo();
  BlockFrequencyInfo(const Function &F, const BranchProbabilityInfo &BPI,
                     const LoopInfo &LI);
  BlockFrequencyInfo(const BlockFrequencyInfo &) = delete;
  BlockFrequencyInfo &operator=(const BlockFrequencyInfo &) = delete;
  BlockFrequencyInfo(BlockFrequencyInfo &&Arg);
  BlockFrequencyInfo &operator=(BlockFrequencyInfo &&RHS);
  ~BlockFrequencyInfo();

/// Handle invalidation explicitly.
  bool invalidate(Function &F, const PreservedAnalyses &PA,
                  FunctionAnalysisManager::Invalidator &);

const Function *getFunction() const;
  const BranchProbabilityInfo *getBPI() const;
  void view(StringRef = "BlockFrequencyDAGs") const;

/// getblockFreq - Return block frequency. Return 0 if we don't have the
  /// information. Please note that initial frequency is equal to ENTRY_FREQ. It
  /// means that we should not rely on the value itself, but only on the
  /// comparison to the other block frequencies. We do this to avoid using of
  /// floating points.
  BlockFrequency getBlockFreq(const BasicBlock *BB) const;

/// Returns the estimated profile count of \p BB.
  /// This computes the relative block frequency of \p BB and multiplies it by
  /// the enclosing function's count (if available) and returns the value.
  Optional<uint64_t> getBlockProfileCount(const BasicBlock *BB,
                                          bool AllowSynthetic = false) const;

/// Returns the estimated profile count of \p Freq.
  /// This uses the frequency \p Freq and multiplies it by
  /// the enclosing function's count (if available) and returns the value.
  Optional<uint64_t> getProfileCountFromFreq(uint64_t Freq) const;

/// Returns true if \p BB is an irreducible loop header
  /// block. Otherwise false.
  bool isIrrLoopHeader(const BasicBlock *BB);

// Set the frequency of the given basic block.
  void setBlockFreq(const BasicBlock *BB, uint64_t Freq);

/// Set the frequency of \p ReferenceBB to \p Freq and scale the frequencies
  /// of the blocks in \p BlocksToScale such that their frequencies relative
  /// to \p ReferenceBB remain unchanged.
  void setBlockFreqAndScale(const BasicBlock *ReferenceBB, uint64_t Freq,
                            SmallPtrSetImpl<BasicBlock *> &BlocksToScale);

/// calculate - compute block frequency info for the given function.
  void calculate(const Function &F, const BranchProbabilityInfo &BPI,
                 const LoopInfo &LI);

// Print the block frequency Freq to OS using the current functions entry
  // frequency to convert freq into a relative decimal form.
  raw_ostream &printBlockFreq(raw_ostream &OS, const BlockFrequency Freq) const;

// Convenience method that attempts to look up the frequency associated with
  // BB and print it to OS.
  raw_ostream &printBlockFreq(raw_ostream &OS, const BasicBlock *BB) const;

uint64_t getEntryFreq() const;
  void releaseMemory();
  void print(raw_ostream &OS) const;

// Compare to the other BFI and verify they match.
  void verifyMatch(BlockFrequencyInfo &Other) const;
};

/// Analysis pass which computes \c BlockFrequencyInfo.
class BlockFrequencyAnalysis
    : public AnalysisInfoMixin<BlockFrequencyAnalysis> {
  friend AnalysisInfoMixin<BlockFrequencyAnalysis>;

static AnalysisKey Key;

public:
  /// Provide the result type for this analysis pass.
  using Result = BlockFrequencyInfo;

/// Run the analysis pass over a function and produce BFI.
  Result run(Function &F, FunctionAnalysisManager &AM);
};

/// Printer pass for the \c BlockFrequencyInfo results.
class BlockFrequencyPrinterPass
    : public PassInfoMixin<BlockFrequencyPrinterPass> {
  raw_ostream &OS;

public:
  explicit BlockFrequencyPrinterPass(raw_ostream &OS) : OS(OS) {}

PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
};

/// Legacy analysis pass which computes \c BlockFrequencyInfo.
class BlockFrequencyInfoWrapperPass : public FunctionPass {
  BlockFrequencyInfo BFI;

public:
  static char ID;

BlockFrequencyInfoWrapperPass();
  ~BlockFrequencyInfoWrapperPass() override;

BlockFrequencyInfo &getBFI() { return BFI; }
  const BlockFrequencyInfo &getBFI() const { return BFI; }

void getAnalysisUsage(AnalysisUsage &AU) const override;

bool runOnFunction(Function &F) override;
  void releaseMemory() override;
  void print(raw_ostream &OS, const Module *M) const override;
};

} // end namespace llvm

#endif // LLVM_ANALYSIS_BLOCKFREQUENCYINFO_H

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