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//===----- 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
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