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//===- llvm/CodeGen/MBFIWrapper.h -------------------------------*- 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 class keeps track of branch frequencies of newly created blocks and
// tail-merged blocks. Used by the TailDuplication and MachineBlockPlacement.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_MBFIWRAPPER_H
#define LLVM_CODEGEN_MBFIWRAPPER_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/BlockFrequency.h"
#include <optional>
namespace llvm {
class MachineBasicBlock;
class MachineBlockFrequencyInfo;
class MBFIWrapper {
public:
MBFIWrapper(const MachineBlockFrequencyInfo &I) : MBFI(I) {}
BlockFrequency getBlockFreq(const MachineBasicBlock *MBB) const;
void setBlockFreq(const MachineBasicBlock *MBB, BlockFrequency F);
std::optional<uint64_t>
getBlockProfileCount(const MachineBasicBlock *MBB) const;
void view(const Twine &Name, bool isSimple = true);
BlockFrequency getEntryFreq() const;
const MachineBlockFrequencyInfo &getMBFI() const { return MBFI; }
private:
const MachineBlockFrequencyInfo &MBFI;
DenseMap<const MachineBasicBlock *, BlockFrequency> MergedBBFreq;
};
} // end namespace llvm
#endif // LLVM_CODEGEN_MBFIWRAPPER_H