BPFInstrInfo.h revision 360784 
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, unsigned SrcReg,
40                           bool isKill, int FrameIndex,
41                           const TargetRegisterClass *RC,
42                           const TargetRegisterInfo *TRI) const override;
43
44  void loadRegFromStackSlot(MachineBasicBlock &MBB,
45                            MachineBasicBlock::iterator MBBI, unsigned DestReg,
46                            int FrameIndex, const TargetRegisterClass *RC,
47                            const TargetRegisterInfo *TRI) const override;
48  bool analyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
49                     MachineBasicBlock *&FBB,
50                     SmallVectorImpl<MachineOperand> &Cond,
51                     bool AllowModify) const override;
52
53  unsigned removeBranch(MachineBasicBlock &MBB,
54                        int *BytesRemoved = nullptr) const override;
55  unsigned insertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
56                        MachineBasicBlock *FBB, ArrayRef<MachineOperand> Cond,
57                        const DebugLoc &DL,
58                        int *BytesAdded = nullptr) const override;
59private:
60  void expandMEMCPY(MachineBasicBlock::iterator) const;
61
62};
63}
64
65#endif
66