1//===-- SystemZInstrBuilder.h - Functions to aid building insts -*- 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 exposes functions that may be used with BuildMI from the
10// MachineInstrBuilder.h file to handle SystemZ'isms in a clean way.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZINSTRBUILDER_H
15#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZINSTRBUILDER_H
16
17#include "llvm/CodeGen/MachineFrameInfo.h"
18#include "llvm/CodeGen/MachineInstrBuilder.h"
19#include "llvm/CodeGen/MachineMemOperand.h"
20
21namespace llvm {
22
23/// Add a BDX memory reference for frame object FI to MIB.
24static inline const MachineInstrBuilder &
25addFrameReference(const MachineInstrBuilder &MIB, int FI) {
26 MachineInstr *MI = MIB;
27 MachineFunction &MF = *MI->getParent()->getParent();
28 MachineFrameInfo &MFFrame = MF.getFrameInfo();
29 const MCInstrDesc &MCID = MI->getDesc();
30 auto Flags = MachineMemOperand::MONone;
31 if (MCID.mayLoad())
32 Flags |= MachineMemOperand::MOLoad;
33 if (MCID.mayStore())
34 Flags |= MachineMemOperand::MOStore;
35 int64_t Offset = 0;
36 MachineMemOperand *MMO = MF.getMachineMemOperand(
37 PtrInfo: MachinePointerInfo::getFixedStack(MF, FI, Offset), F: Flags,
38 Size: MFFrame.getObjectSize(ObjectIdx: FI), BaseAlignment: MFFrame.getObjectAlign(ObjectIdx: FI));
39 return MIB.addFrameIndex(Idx: FI).addImm(Val: Offset).addReg(RegNo: 0).addMemOperand(MMO);
40}
41
42} // end namespace llvm
43
44#endif
45