RISCVTargetMachine.h

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//===-- RISCVTargetMachine.h - Define TargetMachine for RISC-V --*- 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 RISC-V specific subclass of TargetMachine.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_LIB_TARGET_RISCV_RISCVTARGETMACHINE_H
#define LLVM_LIB_TARGET_RISCV_RISCVTARGETMACHINE_H
 
#include "MCTargetDesc/RISCVMCTargetDesc.h"
#include "RISCVSubtarget.h"
#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/Target/TargetMachine.h"
#include <optional>
 
namespace llvm {
class RISCVTargetMachine : public LLVMTargetMachine {
  std::unique_ptr<TargetLoweringObjectFile> TLOF;
  mutable StringMap<std::unique_ptr<RISCVSubtarget>> SubtargetMap;
 
public:
  RISCVTargetMachine(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 RISCVSubtarget *getSubtargetImpl(const Function &F) const override;
  // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget,
  // subtargets are per-function entities based on the target-specific
  // attributes of each function.
  const RISCVSubtarget *getSubtargetImpl() const = delete;
 
  TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
 
  TargetLoweringObjectFile *getObjFileLowering() const override {
    return TLOF.get();
  }
 
  MachineFunctionInfo *
  createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F,
                            const TargetSubtargetInfo *STI) const override;
 
  TargetTransformInfo getTargetTransformInfo(const Function &F) const override;
 
  bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DstAS) const override;
 
  yaml::MachineFunctionInfo *createDefaultFuncInfoYAML() const override;
  yaml::MachineFunctionInfo *
  convertFuncInfoToYAML(const MachineFunction &MF) const override;
  bool parseMachineFunctionInfo(const yaml::MachineFunctionInfo &,
                                PerFunctionMIParsingState &PFS,
                                SMDiagnostic &Error,
                                SMRange &SourceRange) const override;
  void registerPassBuilderCallbacks(PassBuilder &PB) override;
};
} // namespace llvm
 
#endif