1 //===-- SystemZInstrBuilder.h - Functions to aid building insts -*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file exposes functions that may be used with BuildMI from the
11 // MachineInstrBuilder.h file to handle SystemZ'isms in a clean way.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZINSTRBUILDER_H
16 #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZINSTRBUILDER_H
18 #include "llvm/CodeGen/MachineFrameInfo.h"
19 #include "llvm/CodeGen/MachineInstrBuilder.h"
20 #include "llvm/CodeGen/MachineMemOperand.h"
21 #include "llvm/CodeGen/PseudoSourceValue.h"
25 /// Add a BDX memory reference for frame object FI to MIB.
26 static inline const MachineInstrBuilder &
27 addFrameReference(const MachineInstrBuilder &MIB, int FI) {
28 MachineInstr *MI = MIB;
29 MachineFunction &MF = *MI->getParent()->getParent();
30 MachineFrameInfo *MFFrame = MF.getFrameInfo();
31 const MCInstrDesc &MCID = MI->getDesc();
34 Flags |= MachineMemOperand::MOLoad;
36 Flags |= MachineMemOperand::MOStore;
38 MachineMemOperand *MMO =
39 MF.getMachineMemOperand(MachinePointerInfo(
40 PseudoSourceValue::getFixedStack(FI), Offset),
41 Flags, MFFrame->getObjectSize(FI),
42 MFFrame->getObjectAlignment(FI));
43 return MIB.addFrameIndex(FI).addImm(Offset).addReg(0).addMemOperand(MMO);
46 } // end namespace llvm