LLVM 17.0.0git
BPFSubtarget.h
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1//===-- BPFSubtarget.h - Define Subtarget for the BPF -----------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file declares the BPF specific subclass of TargetSubtargetInfo.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_BPF_BPFSUBTARGET_H
14#define LLVM_LIB_TARGET_BPF_BPFSUBTARGET_H
15
16#include "BPFFrameLowering.h"
17#include "BPFISelLowering.h"
18#include "BPFInstrInfo.h"
19#include "BPFSelectionDAGInfo.h"
22#include "llvm/IR/DataLayout.h"
24
25#define GET_SUBTARGETINFO_HEADER
26#include "BPFGenSubtargetInfo.inc"
27
28namespace llvm {
29class StringRef;
30
32 virtual void anchor();
33 BPFInstrInfo InstrInfo;
34 BPFFrameLowering FrameLowering;
35 BPFTargetLowering TLInfo;
37
38private:
39 void initializeEnvironment();
40 void initSubtargetFeatures(StringRef CPU, StringRef FS);
41 bool probeJmpExt();
42
43protected:
44 // unused
46
47 // whether the cpu supports jmp ext
49
50 // whether the cpu supports jmp32 ext.
51 // NOTE: jmp32 is not enabled when alu32 enabled.
53
54 // whether the cpu supports alu32 instructions.
56
57 // whether we should enable MCAsmInfo DwarfUsesRelocationsAcrossSections
59
60public:
61 // This constructor initializes the data members to match that
62 // of the specified triple.
63 BPFSubtarget(const Triple &TT, const std::string &CPU, const std::string &FS,
64 const TargetMachine &TM);
65
67
68 // ParseSubtargetFeatures - Parses features string setting specified
69 // subtarget options. Definition of function is auto generated by tblgen.
71 bool getHasJmpExt() const { return HasJmpExt; }
72 bool getHasJmp32() const { return HasJmp32; }
73 bool getHasAlu32() const { return HasAlu32; }
74 bool getUseDwarfRIS() const { return UseDwarfRIS; }
75
76 const BPFInstrInfo *getInstrInfo() const override { return &InstrInfo; }
77 const BPFFrameLowering *getFrameLowering() const override {
78 return &FrameLowering;
79 }
80 const BPFTargetLowering *getTargetLowering() const override {
81 return &TLInfo;
82 }
83 const BPFSelectionDAGInfo *getSelectionDAGInfo() const override {
84 return &TSInfo;
85 }
86 const TargetRegisterInfo *getRegisterInfo() const override {
87 return &InstrInfo.getRegisterInfo();
88 }
89};
90} // End llvm namespace
91
92#endif
const char LLVMTargetMachineRef TM
return InstrInfo
bool getUseDwarfRIS() const
Definition: BPFSubtarget.h:74
const BPFInstrInfo * getInstrInfo() const override
Definition: BPFSubtarget.h:76
BPFSubtarget & initializeSubtargetDependencies(StringRef CPU, StringRef FS)
const BPFFrameLowering * getFrameLowering() const override
Definition: BPFSubtarget.h:77
bool getHasJmpExt() const
Definition: BPFSubtarget.h:71
const BPFSelectionDAGInfo * getSelectionDAGInfo() const override
Definition: BPFSubtarget.h:83
const TargetRegisterInfo * getRegisterInfo() const override
Definition: BPFSubtarget.h:86
bool getHasJmp32() const
Definition: BPFSubtarget.h:72
const BPFTargetLowering * getTargetLowering() const override
Definition: BPFSubtarget.h:80
void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS)
bool getHasAlu32() const
Definition: BPFSubtarget.h:73
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
Primary interface to the complete machine description for the target machine.
Definition: TargetMachine.h:78
TargetRegisterInfo base class - We assume that the target defines a static array of TargetRegisterDes...
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:44
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18