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//===- 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
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