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49 lines
1.7 KiB
C++
49 lines
1.7 KiB
C++
//===-- SystemZInstrBuilder.h - Functions to aid building insts -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file exposes functions that may be used with BuildMI from the
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// MachineInstrBuilder.h file to handle SystemZ'isms in a clean way.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SYSTEMZINSTRBUILDER_H
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#define SYSTEMZINSTRBUILDER_H
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/CodeGen/MachineInstrBuilder.h"
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#include "llvm/CodeGen/MachineMemOperand.h"
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#include "llvm/CodeGen/PseudoSourceValue.h"
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namespace llvm {
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/// Add a BDX memory reference for frame object FI to MIB.
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static inline const MachineInstrBuilder &
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addFrameReference(const MachineInstrBuilder &MIB, int FI) {
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MachineInstr *MI = MIB;
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MachineFunction &MF = *MI->getParent()->getParent();
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MachineFrameInfo *MFFrame = MF.getFrameInfo();
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const MCInstrDesc &MCID = MI->getDesc();
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unsigned Flags = 0;
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if (MCID.mayLoad())
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Flags |= MachineMemOperand::MOLoad;
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if (MCID.mayStore())
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Flags |= MachineMemOperand::MOStore;
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int64_t Offset = 0;
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MachineMemOperand *MMO =
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MF.getMachineMemOperand(MachinePointerInfo(
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PseudoSourceValue::getFixedStack(FI), Offset),
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Flags, MFFrame->getObjectSize(FI),
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MFFrame->getObjectAlignment(FI));
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return MIB.addFrameIndex(FI).addImm(Offset).addReg(0).addMemOperand(MMO);
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}
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} // end namespace llvm
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#endif
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