Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===- MachineCycleAnalysis.h - Cycle Info for Machine 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

//

//===----------------------------------------------------------------------===//

//

// This file defines the MachineCycleInfo class, which is a thin wrapper over

// the Machine IR instance of GenericCycleInfo.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_CODEGEN_MACHINECYCLEANALYSIS_H

#define LLVM_CODEGEN_MACHINECYCLEANALYSIS_H

#include "llvm/ADT/GenericCycleInfo.h"

#include "llvm/CodeGen/MachineFunctionPass.h"

#include "llvm/CodeGen/MachineSSAContext.h"

namespace llvm {

extern template class GenericCycleInfo<MachineSSAContext>;

extern template class GenericCycle<MachineSSAContext>;

using MachineCycleInfo = GenericCycleInfo<MachineSSAContext>;

using MachineCycle = MachineCycleInfo::CycleT;

/// Legacy analysis pass which computes a \ref MachineCycleInfo.

class MachineCycleInfoWrapperPass : public MachineFunctionPass {

  MachineFunction *F = nullptr;

  MachineCycleInfo CI;

public:

  static char ID;

  MachineCycleInfoWrapperPass();

  MachineCycleInfo &getCycleInfo() { return CI; }

  const MachineCycleInfo &getCycleInfo() const { return CI; }

  bool runOnMachineFunction(MachineFunction &F) override;

  void getAnalysisUsage(AnalysisUsage &AU) const override;

  void releaseMemory() override;

  void print(raw_ostream &OS, const Module *M = nullptr) const override;

};

// TODO: add this function to GenericCycle template after implementing IR

//       version.

bool isCycleInvariant(const MachineCycle *Cycle, MachineInstr &I);

} // end namespace llvm

#endif // LLVM_CODEGEN_MACHINECYCLEANALYSIS_H