BPFTargetMachine.h

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//===-- BPFTargetMachine.h - Define TargetMachine for BPF --- 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 declares the BPF specific subclass of TargetMachine.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_LIB_TARGET_BPF_BPFTARGETMACHINE_H
#define LLVM_LIB_TARGET_BPF_BPFTARGETMACHINE_H
 
#include "BPFSubtarget.h"
#include "llvm/CodeGen/CodeGenTargetMachineImpl.h"
#include <optional>
 
namespace llvm {
class BPFTargetMachine : public CodeGenTargetMachineImpl {
  std::unique_ptr<TargetLoweringObjectFile> TLOF;
  BPFSubtarget Subtarget;
 
public:
  BPFTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
                   StringRef FS, const TargetOptions &Options,
                   std::optional<Reloc::Model> RM,
                   std::optional<CodeModel::Model> CM, CodeGenOptLevel OL,
                   bool JIT);
 
  const BPFSubtarget *getSubtargetImpl() const { return &Subtarget; }
  const BPFSubtarget *getSubtargetImpl(const Function &) const override {
    return &Subtarget;
  }
 
  TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
 
  TargetTransformInfo getTargetTransformInfo(const Function &F) const override;
 
  TargetLoweringObjectFile *getObjFileLowering() const override {
    return TLOF.get();
  }
 
  void registerPassBuilderCallbacks(PassBuilder &PB) override;
 
  Error buildCodeGenPipeline(ModulePassManager &MPM, ModuleAnalysisManager &MAM,
                             raw_pwrite_stream &Out, raw_pwrite_stream *DwoOut,
                             CodeGenFileType FileType,
                             const CGPassBuilderOption &Opt, MCContext &Ctx,
                             PassInstrumentationCallbacks *PIC) override;
};
}
 
#endif