llvm/llvm/lib/Target/BPF/BPFInstrInfo.cpp

//===-- BPFInstrInfo.cpp - BPF Instruction Information ----------*- 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 contains the BPF implementation of the TargetInstrInfo class.
//
//===----------------------------------------------------------------------===//

#include "BPFInstrInfo.h"
#include "BPF.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/Support/ErrorHandling.h"
#include <cassert>
#include <iterator>

#define GET_INSTRINFO_CTOR_DTOR
#include "BPFGenInstrInfo.inc"

usingnamespacellvm;

BPFInstrInfo::BPFInstrInfo()
    : … { … }

void BPFInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
                               MachineBasicBlock::iterator I,
                               const DebugLoc &DL, MCRegister DestReg,
                               MCRegister SrcReg, bool KillSrc,
                               bool RenamableDest, bool RenamableSrc) const { … }

void BPFInstrInfo::expandMEMCPY(MachineBasicBlock::iterator MI) const { … }

bool BPFInstrInfo::expandPostRAPseudo(MachineInstr &MI) const { … }

void BPFInstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
                                       MachineBasicBlock::iterator I,
                                       Register SrcReg, bool IsKill, int FI,
                                       const TargetRegisterClass *RC,
                                       const TargetRegisterInfo *TRI,
                                       Register VReg) const { … }

void BPFInstrInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
                                        MachineBasicBlock::iterator I,
                                        Register DestReg, int FI,
                                        const TargetRegisterClass *RC,
                                        const TargetRegisterInfo *TRI,
                                        Register VReg) const { … }

bool BPFInstrInfo::analyzeBranch(MachineBasicBlock &MBB,
                                 MachineBasicBlock *&TBB,
                                 MachineBasicBlock *&FBB,
                                 SmallVectorImpl<MachineOperand> &Cond,
                                 bool AllowModify) const { … }

unsigned BPFInstrInfo::insertBranch(MachineBasicBlock &MBB,
                                    MachineBasicBlock *TBB,
                                    MachineBasicBlock *FBB,
                                    ArrayRef<MachineOperand> Cond,
                                    const DebugLoc &DL,
                                    int *BytesAdded) const { … }

unsigned BPFInstrInfo::removeBranch(MachineBasicBlock &MBB,
                                    int *BytesRemoved) const { … }