forked from OSchip/llvm-project
93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
//===-- BPFSubtarget.h - Define Subtarget for the BPF -----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares the BPF specific subclass of TargetSubtargetInfo.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_BPF_BPFSUBTARGET_H
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#define LLVM_LIB_TARGET_BPF_BPFSUBTARGET_H
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#include "BPFFrameLowering.h"
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#include "BPFISelLowering.h"
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#include "BPFInstrInfo.h"
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#include "BPFSelectionDAGInfo.h"
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#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
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#include "llvm/CodeGen/TargetSubtargetInfo.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/Target/TargetMachine.h"
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#define GET_SUBTARGETINFO_HEADER
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#include "BPFGenSubtargetInfo.inc"
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namespace llvm {
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class StringRef;
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class BPFSubtarget : public BPFGenSubtargetInfo {
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virtual void anchor();
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BPFInstrInfo InstrInfo;
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BPFFrameLowering FrameLowering;
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BPFTargetLowering TLInfo;
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BPFSelectionDAGInfo TSInfo;
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private:
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void initializeEnvironment();
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void initSubtargetFeatures(StringRef CPU, StringRef FS);
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bool probeJmpExt();
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protected:
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// unused
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bool isDummyMode;
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// whether the cpu supports jmp ext
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bool HasJmpExt;
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// whether the cpu supports jmp32 ext.
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// NOTE: jmp32 is not enabled when alu32 enabled.
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bool HasJmp32;
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// whether the cpu supports alu32 instructions.
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bool HasAlu32;
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// whether we should enable MCAsmInfo DwarfUsesRelocationsAcrossSections
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bool UseDwarfRIS;
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public:
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// This constructor initializes the data members to match that
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// of the specified triple.
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BPFSubtarget(const Triple &TT, const std::string &CPU, const std::string &FS,
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const TargetMachine &TM);
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BPFSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
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// ParseSubtargetFeatures - Parses features string setting specified
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// subtarget options. Definition of function is auto generated by tblgen.
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void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS);
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bool getHasJmpExt() const { return HasJmpExt; }
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bool getHasJmp32() const { return HasJmp32; }
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bool getHasAlu32() const { return HasAlu32; }
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bool getUseDwarfRIS() const { return UseDwarfRIS; }
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const BPFInstrInfo *getInstrInfo() const override { return &InstrInfo; }
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const BPFFrameLowering *getFrameLowering() const override {
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return &FrameLowering;
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}
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const BPFTargetLowering *getTargetLowering() const override {
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return &TLInfo;
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}
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const BPFSelectionDAGInfo *getSelectionDAGInfo() const override {
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return &TSInfo;
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}
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const TargetRegisterInfo *getRegisterInfo() const override {
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return &InstrInfo.getRegisterInfo();
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}
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};
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} // End llvm namespace
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#endif
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