66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
//===-- WDC65816InstrInfo.cpp - WDC65816 Instruction Information ----------===//
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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 contains the WDC65816 implementation of the TargetInstrInfo class.
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//
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//===----------------------------------------------------------------------===//
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#include "WDC65816InstrInfo.h"
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#include "WDC65816.h"
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#include "WDC65816MachineFunctionInfo.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallVector.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/MachineRegisterInfo.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/TargetRegistry.h"
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#define GET_INSTRINFO_CTOR_DTOR
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#include "WDC65816GenInstrInfo.inc"
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using namespace llvm;
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// Pin the vtable to this file.
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void WDC65816InstrInfo::anchor() {}
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WDC65816InstrInfo::WDC65816InstrInfo(void)
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: WDC65816GenInstrInfo(WDC::ADJCALLSTACKDOWN, WDC::ADJCALLSTACKUP),
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RI() {
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}
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unsigned WDC65816InstrInfo::getGlobalBaseReg(MachineFunction *MF) const
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{
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WDC65816MachineFunctionInfo *WDC65816FI = MF->getInfo<WDC65816MachineFunctionInfo>();
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return WDC65816FI->getGlobalBaseReg();
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#if 0 // WDC_TODO - Do something better here...
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unsigned GlobalBaseReg = WDC65816FI->getGlobalBaseReg();
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if (GlobalBaseReg != 0)
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return GlobalBaseReg;
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// Insert the set of GlobalBaseReg into the first MBB of the function
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MachineBasicBlock &FirstMBB = MF->front();
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MachineBasicBlock::iterator MBBI = FirstMBB.begin();
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MachineRegisterInfo &RegInfo = MF->getRegInfo();
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GlobalBaseReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
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DebugLoc dl;
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BuildMI(FirstMBB, MBBI, dl, get(SP::GETPCX), GlobalBaseReg);
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SparcFI->setGlobalBaseReg(GlobalBaseReg);
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return GlobalBaseReg;
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#endif
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}
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