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//===-- Thumb2InstrInfo.h - Thumb-2 Instruction Information -----*- C++ -*-===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// This file contains the Thumb-2 implementation of the TargetInstrInfo class.
#include "ARMBaseInstrInfo.h"
#include "ThumbRegisterInfo.h"
namespace llvm {
class ARMSubtarget;
class ScheduleHazardRecognizer;
class Thumb2InstrInfo : public ARMBaseInstrInfo {
ThumbRegisterInfo RI;
explicit Thumb2InstrInfo(const ARMSubtarget &STI);
/// Return the noop instruction to use for a noop.
void getNoop(MCInst &NopInst) const override;
// Return the non-pre/post incrementing version of 'Opc'. Return 0
// if there is not such an opcode.
unsigned getUnindexedOpcode(unsigned Opc) const override;
void ReplaceTailWithBranchTo(MachineBasicBlock::iterator Tail,
MachineBasicBlock *NewDest) const override;
bool isLegalToSplitMBBAt(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBI) const override;
void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
const DebugLoc &DL, unsigned DestReg, unsigned SrcReg,
bool KillSrc) const override;
void storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBI,
unsigned SrcReg, bool isKill, int FrameIndex,
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const override;
void loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBI,
unsigned DestReg, int FrameIndex,
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const override;
/// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As
/// such, whenever a client has an instance of instruction info, it should
/// always be able to get register info as well (through this method).
const ThumbRegisterInfo &getRegisterInfo() const override { return RI; }
void expandLoadStackGuard(MachineBasicBlock::iterator MI) const override;
/// getITInstrPredicate - Valid only in Thumb2 mode. This function is identical
/// to llvm::getInstrPredicate except it returns AL for conditional branch
/// instructions which are "predicated", but are not in IT blocks.
ARMCC::CondCodes getITInstrPredicate(const MachineInstr &MI, unsigned &PredReg);