| //===- 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/ADT/Optional.h" |
| #include "llvm/Support/BlockFrequency.h" |
| |
| 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); |
| Optional<uint64_t> getBlockProfileCount(const MachineBasicBlock *MBB) const; |
| |
| raw_ostream &printBlockFreq(raw_ostream &OS, |
| const MachineBasicBlock *MBB) const; |
| raw_ostream &printBlockFreq(raw_ostream &OS, |
| const BlockFrequency Freq) const; |
| void view(const Twine &Name, bool isSimple = true); |
| uint64_t getEntryFreq() const; |
| const MachineBlockFrequencyInfo &getMBFI() { return MBFI; } |
| |
| private: |
| const MachineBlockFrequencyInfo &MBFI; |
| DenseMap<const MachineBasicBlock *, BlockFrequency> MergedBBFreq; |
| }; |
| |
| } // end namespace llvm |
| |
| #endif // LLVM_CODEGEN_MBFIWRAPPER_H |