| //===-- BPFSubtarget.h - Define Subtarget for the 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 TargetSubtargetInfo. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_BPF_BPFSUBTARGET_H |
| #define LLVM_LIB_TARGET_BPF_BPFSUBTARGET_H |
| |
| #include "BPFFrameLowering.h" |
| #include "BPFISelLowering.h" |
| #include "BPFInstrInfo.h" |
| #include "BPFSelectionDAGInfo.h" |
| #include "llvm/CodeGen/SelectionDAGTargetInfo.h" |
| #include "llvm/CodeGen/TargetSubtargetInfo.h" |
| #include "llvm/IR/DataLayout.h" |
| #include "llvm/Target/TargetMachine.h" |
| |
| #define GET_SUBTARGETINFO_HEADER |
| #include "BPFGenSubtargetInfo.inc" |
| |
| namespace llvm { |
| class StringRef; |
| |
| class BPFSubtarget : public BPFGenSubtargetInfo { |
| virtual void anchor(); |
| BPFInstrInfo InstrInfo; |
| BPFFrameLowering FrameLowering; |
| BPFTargetLowering TLInfo; |
| BPFSelectionDAGInfo TSInfo; |
| |
| private: |
| void initializeEnvironment(); |
| void initSubtargetFeatures(StringRef CPU, StringRef FS); |
| bool probeJmpExt(); |
| |
| protected: |
| // unused |
| bool isDummyMode; |
| |
| // whether the cpu supports jmp ext |
| bool HasJmpExt; |
| |
| // whether the cpu supports jmp32 ext. |
| // NOTE: jmp32 is not enabled when alu32 enabled. |
| bool HasJmp32; |
| |
| // whether the cpu supports alu32 instructions. |
| bool HasAlu32; |
| |
| // whether we should enable MCAsmInfo DwarfUsesRelocationsAcrossSections |
| bool UseDwarfRIS; |
| |
| public: |
| // This constructor initializes the data members to match that |
| // of the specified triple. |
| BPFSubtarget(const Triple &TT, const std::string &CPU, const std::string &FS, |
| const TargetMachine &TM); |
| |
| BPFSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS); |
| |
| // ParseSubtargetFeatures - Parses features string setting specified |
| // subtarget options. Definition of function is auto generated by tblgen. |
| void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS); |
| bool getHasJmpExt() const { return HasJmpExt; } |
| bool getHasJmp32() const { return HasJmp32; } |
| bool getHasAlu32() const { return HasAlu32; } |
| bool getUseDwarfRIS() const { return UseDwarfRIS; } |
| |
| const BPFInstrInfo *getInstrInfo() const override { return &InstrInfo; } |
| const BPFFrameLowering *getFrameLowering() const override { |
| return &FrameLowering; |
| } |
| const BPFTargetLowering *getTargetLowering() const override { |
| return &TLInfo; |
| } |
| const BPFSelectionDAGInfo *getSelectionDAGInfo() const override { |
| return &TSInfo; |
| } |
| const TargetRegisterInfo *getRegisterInfo() const override { |
| return &InstrInfo.getRegisterInfo(); |
| } |
| }; |
| } // End llvm namespace |
| |
| #endif |