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//===- ARCInstrInfo.h - ARC 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 ARC implementation of the TargetInstrInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_ARC_ARCINSTRINFO_H
#define LLVM_LIB_TARGET_ARC_ARCINSTRINFO_H
#include "ARCRegisterInfo.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#define GET_INSTRINFO_HEADER
#include "ARCGenInstrInfo.inc"
namespace llvm {
class ARCSubtarget;
class ARCInstrInfo : public ARCGenInstrInfo {
const ARCRegisterInfo RI;
virtual void anchor();
public:
ARCInstrInfo(const ARCSubtarget &);
const ARCRegisterInfo &getRegisterInfo() const { return RI; }
/// If the specified machine instruction is a direct
/// load from a stack slot, return the virtual or physical register number of
/// the destination along with the FrameIndex of the loaded stack slot. If
/// not, return 0. This predicate must return 0 if the instruction has
/// any side effects other than loading from the stack slot.
unsigned isLoadFromStackSlot(const MachineInstr &MI,
int &FrameIndex) const override;
/// If the specified machine instruction is a direct
/// store to a stack slot, return the virtual or physical register number of
/// the source reg along with the FrameIndex of the loaded stack slot. If
/// not, return 0. This predicate must return 0 if the instruction has
/// any side effects other than storing to the stack slot.
unsigned isStoreToStackSlot(const MachineInstr &MI,
int &FrameIndex) const override;
unsigned getInstSizeInBytes(const MachineInstr &MI) const override;
bool analyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
MachineBasicBlock *&FBB,
SmallVectorImpl<MachineOperand> &Cond,
bool AllowModify) const override;
unsigned insertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
MachineBasicBlock *FBB, ArrayRef<MachineOperand> Cond,
const DebugLoc &,
int *BytesAdded = nullptr) const override;
unsigned removeBranch(MachineBasicBlock &MBB,
int *BytesRemoved = nullptr) const override;
void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
const DebugLoc &, MCRegister DestReg, MCRegister SrcReg,
bool KillSrc) const override;
void storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI, Register SrcReg,
bool IsKill, int FrameIndex,
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const override;
void loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI, Register DestReg,
int FrameIndex, const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const override;
bool
reverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const override;
bool isPostIncrement(const MachineInstr &MI) const override;
// ARC-specific
bool isPreIncrement(const MachineInstr &MI) const;
virtual bool getBaseAndOffsetPosition(const MachineInstr &MI,
unsigned &BasePos,
unsigned &OffsetPos) const override;
// Emit code before MBBI to load immediate value into physical register Reg.
// Returns an iterator to the new instruction.
MachineBasicBlock::iterator loadImmediate(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned Reg, uint64_t Value) const;
};
} // end namespace llvm
#endif // LLVM_LIB_TARGET_ARC_ARCINSTRINFO_H