49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
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//===- llvm/CodeGen/MBFIWrapper.h -------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This class keeps track of branch frequencies of newly created blocks and
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// tail-merged blocks. Used by the TailDuplication and MachineBlockPlacement.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_MBFIWRAPPER_H
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#define LLVM_CODEGEN_MBFIWRAPPER_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/Support/BlockFrequency.h"
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namespace llvm {
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class MachineBasicBlock;
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class MachineBlockFrequencyInfo;
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class MBFIWrapper {
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public:
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MBFIWrapper(const MachineBlockFrequencyInfo &I) : MBFI(I) {}
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BlockFrequency getBlockFreq(const MachineBasicBlock *MBB) const;
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void setBlockFreq(const MachineBasicBlock *MBB, BlockFrequency F);
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Optional<uint64_t> getBlockProfileCount(const MachineBasicBlock *MBB) const;
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raw_ostream &printBlockFreq(raw_ostream &OS,
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const MachineBasicBlock *MBB) const;
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raw_ostream &printBlockFreq(raw_ostream &OS,
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const BlockFrequency Freq) const;
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void view(const Twine &Name, bool isSimple = true);
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uint64_t getEntryFreq() const;
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const MachineBlockFrequencyInfo &getMBFI() { return MBFI; }
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private:
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const MachineBlockFrequencyInfo &MBFI;
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DenseMap<const MachineBasicBlock *, BlockFrequency> MergedBBFreq;
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};
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} // end namespace llvm
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#endif // LLVM_CODEGEN_MBFIWRAPPER_H
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