| 1 | //===----- MIRSampleProfile.h: SampleFDO Support in MIR ---*- c++ -*-------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // This file contains the supoorting functions for machine level Sample FDO |
| 10 | // loader. This is used in Flow Sensitive SampelFDO. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #ifndef LLVM_CODEGEN_MIRSAMPLEPROFILE_H |
| 15 | #define LLVM_CODEGEN_MIRSAMPLEPROFILE_H |
| 16 | |
| 17 | #include "llvm/ADT/IntrusiveRefCntPtr.h" |
| 18 | #include "llvm/ADT/StringRef.h" |
| 19 | #include "llvm/CodeGen/MachineFunctionPass.h" |
| 20 | #include "llvm/Support/Discriminator.h" |
| 21 | #include <memory> |
| 22 | #include <string> |
| 23 | |
| 24 | namespace llvm { |
| 25 | class AnalysisUsage; |
| 26 | class MachineBlockFrequencyInfo; |
| 27 | class MachineFunction; |
| 28 | class Module; |
| 29 | |
| 30 | namespace vfs { |
| 31 | class FileSystem; |
| 32 | } // namespace vfs |
| 33 | |
| 34 | using namespace sampleprof; |
| 35 | |
| 36 | class MIRProfileLoader; |
| 37 | class MIRProfileLoaderPass : public MachineFunctionPass { |
| 38 | MachineFunction *MF; |
| 39 | std::string ProfileFileName; |
| 40 | FSDiscriminatorPass P; |
| 41 | unsigned LowBit; |
| 42 | unsigned HighBit; |
| 43 | |
| 44 | public: |
| 45 | static char ID; |
| 46 | /// FS bits will only use the '1' bits in the Mask. |
| 47 | MIRProfileLoaderPass(std::string FileName = "", |
| 48 | std::string RemappingFileName = "", |
| 49 | FSDiscriminatorPass P = FSDiscriminatorPass::Pass1, |
| 50 | IntrusiveRefCntPtr<vfs::FileSystem> FS = nullptr); |
| 51 | |
| 52 | /// getMachineFunction - Return the last machine function computed. |
| 53 | const MachineFunction *getMachineFunction() const { return MF; } |
| 54 | |
| 55 | StringRef getPassName() const override { return "SampleFDO loader in MIR"; } |
| 56 | |
| 57 | private: |
| 58 | void init(MachineFunction &MF); |
| 59 | bool runOnMachineFunction(MachineFunction &) override; |
| 60 | bool doInitialization(Module &M) override; |
| 61 | void getAnalysisUsage(AnalysisUsage &AU) const override; |
| 62 | |
| 63 | std::unique_ptr<MIRProfileLoader> MIRSampleLoader; |
| 64 | /// Hold the information of the basic block frequency. |
| 65 | MachineBlockFrequencyInfo *MBFI; |
| 66 | }; |
| 67 | |
| 68 | } // namespace llvm |
| 69 | |
| 70 | #endif // LLVM_CODEGEN_MIRSAMPLEPROFILE_H |
| 71 |