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Dir : ~/usr/include/llvm/Analysis/

Edit File: CycleAnalysis.h

//===- CycleAnalysis.h - Cycle Info for LLVM IR -----------------*- 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
//
//===----------------------------------------------------------------------===//
/// \file
///
/// This file declares an analysis pass that computes CycleInfo for
/// LLVM IR, specialized from GenericCycleInfo.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_ANALYSIS_CYCLEANALYSIS_H
#define LLVM_ANALYSIS_CYCLEANALYSIS_H

#include "llvm/IR/CycleInfo.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/SSAContext.h"
#include "llvm/Pass.h"

namespace llvm {

/// Legacy analysis pass which computes a \ref CycleInfo.
class CycleInfoWrapperPass : public FunctionPass {
  Function *F = nullptr;
  CycleInfo CI;

public:
  static char ID;

CycleInfoWrapperPass();

CycleInfo &getResult() { return CI; }
  const CycleInfo &getResult() const { return CI; }

bool runOnFunction(Function &F) override;
  void getAnalysisUsage(AnalysisUsage &AU) const override;
  void releaseMemory() override;
  void print(raw_ostream &OS, const Module *M = nullptr) const override;

// TODO: verify analysis?
};

/// Analysis pass which computes a \ref CycleInfo.
class CycleAnalysis : public AnalysisInfoMixin<CycleAnalysis> {
  friend AnalysisInfoMixin<CycleAnalysis>;
  static AnalysisKey Key;

public:
  /// Provide the result typedef for this analysis pass.
  using Result = CycleInfo;

using LegacyWrapper = CycleInfoWrapperPass;

/// Run the analysis pass over a function and produce a dominator tree.
  CycleInfo run(Function &F, FunctionAnalysisManager &);

// TODO: verify analysis?
};

/// Printer pass for the \c DominatorTree.
class CycleInfoPrinterPass : public PassInfoMixin<CycleInfoPrinterPass> {
  raw_ostream &OS;

public:
  explicit CycleInfoPrinterPass(raw_ostream &OS);

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

static bool isRequired() { return true; }
};

} // end namespace llvm

#endif // LLVM_ANALYSIS_CYCLEANALYSIS_H