1 //===-- SystemZInstrBuilder.h - Functions to aid building insts -*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 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. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef SYSTEMZINSTRBUILDER_H 16 #define SYSTEMZINSTRBUILDER_H 17 18 #include "llvm/CodeGen/MachineFrameInfo.h" 19 #include "llvm/CodeGen/MachineInstrBuilder.h" 20 #include "llvm/CodeGen/MachineMemOperand.h" 21 #include "llvm/CodeGen/PseudoSourceValue.h" 22 23 namespace llvm { 24 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(); 32 unsigned Flags = 0; 33 if (MCID.mayLoad()) 34 Flags |= MachineMemOperand::MOLoad; 35 if (MCID.mayStore()) 36 Flags |= MachineMemOperand::MOStore; 37 int64_t Offset = 0; 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); 44 } 45 46 } // End llvm namespace 47 48 #endif 49
