1//===-- BPFInstrInfo.h - BPF Instruction Information ------------*- 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 contains the BPF implementation of the TargetInstrInfo class.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_BPF_BPFINSTRINFO_H
14#define LLVM_LIB_TARGET_BPF_BPFINSTRINFO_H
15
16#include "BPFRegisterInfo.h"
17#include "llvm/CodeGen/TargetInstrInfo.h"
18
19#define GET_INSTRINFO_HEADER
20#include "BPFGenInstrInfo.inc"
21
22namespace llvm {
23
24class BPFInstrInfo : public BPFGenInstrInfo {
25 const BPFRegisterInfo RI;
26
27public:
28 BPFInstrInfo();
29
30 const BPFRegisterInfo &getRegisterInfo() const { return RI; }
31
32 void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
33 const DebugLoc &DL, MCRegister DestReg, MCRegister SrcReg,
34 bool KillSrc) const override;
35
36 bool expandPostRAPseudo(MachineInstr &MI) const override;
37
38 void storeRegToStackSlot(MachineBasicBlock &MBB,
39 MachineBasicBlock::iterator MBBI, Register SrcReg,
40 bool isKill, int FrameIndex,
41 const TargetRegisterClass *RC,
42 const TargetRegisterInfo *TRI,
43 Register VReg) const override;
44
45 void loadRegFromStackSlot(MachineBasicBlock &MBB,
46 MachineBasicBlock::iterator MBBI, Register DestReg,
47 int FrameIndex, const TargetRegisterClass *RC,
48 const TargetRegisterInfo *TRI,
49 Register VReg) const override;
50 bool analyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
51 MachineBasicBlock *&FBB,
52 SmallVectorImpl<MachineOperand> &Cond,
53 bool AllowModify) const override;
54
55 unsigned removeBranch(MachineBasicBlock &MBB,
56 int *BytesRemoved = nullptr) const override;
57 unsigned insertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
58 MachineBasicBlock *FBB, ArrayRef<MachineOperand> Cond,
59 const DebugLoc &DL,
60 int *BytesAdded = nullptr) const override;
61private:
62 void expandMEMCPY(MachineBasicBlock::iterator) const;
63
64};
65}
66
67#endif
68