lib/Target/RISCV/RISCVTargetMachine.h

//===-- RISCVTargetMachine.h - Define TargetMachine for RISCV ---*- 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 RISCV 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"

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,
                     Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
                     CodeGenOpt::Level 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();
  }

  TargetTransformInfo getTargetTransformInfo(const Function &F) override;

  virtual bool isNoopAddrSpaceCast(unsigned SrcAS,
                                   unsigned DstAS) const override;
};
} // namespace llvm

#endif