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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: StackSafetyAnalysis.h

//===- StackSafetyAnalysis.h - Stack memory safety 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
//
//===----------------------------------------------------------------------===//
//
// Stack Safety Analysis detects allocas and arguments with safe access.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_ANALYSIS_STACKSAFETYANALYSIS_H
#define LLVM_ANALYSIS_STACKSAFETYANALYSIS_H

#include "llvm/IR/ModuleSummaryIndex.h"
#include "llvm/IR/PassManager.h"
#include "llvm/Pass.h"

namespace llvm {

class AllocaInst;
class ScalarEvolution;

/// Interface to access stack safety analysis results for single function.
class StackSafetyInfo {
public:
  struct InfoTy;

private:
  Function *F = nullptr;
  std::function<ScalarEvolution &()> GetSE;
  mutable std::unique_ptr<InfoTy> Info;

public:
  StackSafetyInfo();
  StackSafetyInfo(Function *F, std::function<ScalarEvolution &()> GetSE);
  StackSafetyInfo(StackSafetyInfo &&);
  StackSafetyInfo &operator=(StackSafetyInfo &&);
  ~StackSafetyInfo();

const InfoTy &getInfo() const;

// TODO: Add useful for client methods.
  void print(raw_ostream &O) const;

/// Parameters use for a FunctionSummary.
  /// Function collects access information of all pointer parameters.
  /// Information includes a range of direct access of parameters by the
  /// functions and all call sites accepting the parameter.
  /// StackSafety assumes that missing parameter information means possibility
  /// of access to the parameter with any offset, so we can correctly link
  /// code without StackSafety information, e.g. non-ThinLTO.
  std::vector<FunctionSummary::ParamAccess> getParamAccesses() const;
};

class StackSafetyGlobalInfo {
public:
  struct InfoTy;

private:
  Module *M = nullptr;
  std::function<const StackSafetyInfo &(Function &F)> GetSSI;
  const ModuleSummaryIndex *Index = nullptr;
  mutable std::unique_ptr<InfoTy> Info;
  const InfoTy &getInfo() const;

public:
  StackSafetyGlobalInfo();
  StackSafetyGlobalInfo(
      Module *M, std::function<const StackSafetyInfo &(Function &F)> GetSSI,
      const ModuleSummaryIndex *Index);
  StackSafetyGlobalInfo(StackSafetyGlobalInfo &&);
  StackSafetyGlobalInfo &operator=(StackSafetyGlobalInfo &&);
  ~StackSafetyGlobalInfo();

bool isSafe(const AllocaInst &AI) const;
  void print(raw_ostream &O) const;
  void dump() const;
};

/// StackSafetyInfo wrapper for the new pass manager.
class StackSafetyAnalysis : public AnalysisInfoMixin<StackSafetyAnalysis> {
  friend AnalysisInfoMixin<StackSafetyAnalysis>;
  static AnalysisKey Key;

public:
  using Result = StackSafetyInfo;
  StackSafetyInfo run(Function &F, FunctionAnalysisManager &AM);
};

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

public:
  explicit StackSafetyPrinterPass(raw_ostream &OS) : OS(OS) {}
  PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
};

/// StackSafetyInfo wrapper for the legacy pass manager
class StackSafetyInfoWrapperPass : public FunctionPass {
  StackSafetyInfo SSI;

public:
  static char ID;
  StackSafetyInfoWrapperPass();

const StackSafetyInfo &getResult() const { return SSI; }

void print(raw_ostream &O, const Module *M) const override;
  void getAnalysisUsage(AnalysisUsage &AU) const override;

bool runOnFunction(Function &F) override;
};

/// This pass performs the global (interprocedural) stack safety analysis (new
/// pass manager).
class StackSafetyGlobalAnalysis
    : public AnalysisInfoMixin<StackSafetyGlobalAnalysis> {
  friend AnalysisInfoMixin<StackSafetyGlobalAnalysis>;
  static AnalysisKey Key;

public:
  using Result = StackSafetyGlobalInfo;
  Result run(Module &M, ModuleAnalysisManager &AM);
};

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

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

/// This pass performs the global (interprocedural) stack safety analysis
/// (legacy pass manager).
class StackSafetyGlobalInfoWrapperPass : public ModulePass {
  StackSafetyGlobalInfo SSGI;

public:
  static char ID;

StackSafetyGlobalInfoWrapperPass();
  ~StackSafetyGlobalInfoWrapperPass();

const StackSafetyGlobalInfo &getResult() const { return SSGI; }

void print(raw_ostream &O, const Module *M) const override;
  void getAnalysisUsage(AnalysisUsage &AU) const override;

bool runOnModule(Module &M) override;
};

bool needsParamAccessSummary(const Module &M);

void generateParamAccessSummary(ModuleSummaryIndex &Index);

} // end namespace llvm

#endif // LLVM_ANALYSIS_STACKSAFETYANALYSIS_H

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Editing: StackSafetyAnalysis.h

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