| //===----- MIRSampleProfile.h: SampleFDO Support in MIR ---*- 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 contains the supoorting functions for machine level Sample FDO |
| // loader. This is used in Flow Sensitive SampelFDO. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CODEGEN_MIRSAMPLEPROFILE_H |
| #define LLVM_CODEGEN_MIRSAMPLEPROFILE_H |
| |
| #include "llvm/ADT/IntrusiveRefCntPtr.h" |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/CodeGen/MachineFunctionPass.h" |
| #include "llvm/Support/Discriminator.h" |
| #include <memory> |
| #include <string> |
| |
| namespace llvm { |
| class AnalysisUsage; |
| class MachineBlockFrequencyInfo; |
| class MachineFunction; |
| class Module; |
| |
| namespace vfs { |
| class FileSystem; |
| } // namespace vfs |
| |
| using namespace sampleprof; |
| |
| class MIRProfileLoader; |
| class MIRProfileLoaderPass : public MachineFunctionPass { |
| MachineFunction *MF; |
| std::string ProfileFileName; |
| FSDiscriminatorPass P; |
| unsigned LowBit; |
| unsigned HighBit; |
| |
| public: |
| static char ID; |
| /// FS bits will only use the '1' bits in the Mask. |
| MIRProfileLoaderPass(std::string FileName = "", |
| std::string RemappingFileName = "", |
| FSDiscriminatorPass P = FSDiscriminatorPass::Pass1, |
| IntrusiveRefCntPtr<vfs::FileSystem> FS = nullptr); |
| |
| /// getMachineFunction - Return the last machine function computed. |
| const MachineFunction *getMachineFunction() const { return MF; } |
| |
| StringRef getPassName() const override { return "SampleFDO loader in MIR"; } |
| |
| private: |
| void init(MachineFunction &MF); |
| bool runOnMachineFunction(MachineFunction &) override; |
| bool doInitialization(Module &M) override; |
| void getAnalysisUsage(AnalysisUsage &AU) const override; |
| |
| std::unique_ptr<MIRProfileLoader> MIRSampleLoader; |
| /// Hold the information of the basic block frequency. |
| MachineBlockFrequencyInfo *MBFI; |
| }; |
| |
| } // namespace llvm |
| |
| #endif // LLVM_CODEGEN_MIRSAMPLEPROFILE_H |