void PIC16InstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
unsigned SrcReg, bool isKill, int FI,
const TargetRegisterClass *RC) const {
PIC16TargetLowering *PTLI = TM.getTargetLowering();
DebugLoc DL = DebugLoc::getUnknownLoc();
if (I != MBB.end()) DL = I->getDebugLoc();
const Function *Func = MBB.getParent()->getFunction();
const std::string FuncName = Func->getName();
char *tmpName = new char [strlen(FuncName.c_str()) + 6];
sprintf(tmpName, "%s.tmp", FuncName.c_str());
// On the order of operands here: think "movwf SrcReg, tmp_slot, offset".
if (RC == PIC16::GPRRegisterClass) {
//MachineFunction &MF = *MBB.getParent();
//MachineRegisterInfo &RI = MF.getRegInfo();
BuildMI(MBB, I, DL, get(PIC16::movwf))
.addReg(SrcReg, false, false, isKill)
.addImm(PTLI->GetTmpOffsetForFI(FI, 1))
.addExternalSymbol(tmpName)
.addImm(1); // Emit banksel for it.
}
else if (RC == PIC16::FSR16RegisterClass) {
// This is a 16-bit register and the frameindex given by llvm is of
// size two here. Break this index N into two zero based indexes and
// put one into the map. The second one is always obtained by adding 1
// to the first zero based index. In fact it is going to use 3 slots
// as saving FSRs corrupts W also and hence we need to save/restore W also.
unsigned opcode = (SrcReg == PIC16::FSR0) ? PIC16::save_fsr0
: PIC16::save_fsr1;
BuildMI(MBB, I, DL, get(opcode))
.addReg(SrcReg, false, false, isKill)
.addImm(PTLI->GetTmpOffsetForFI(FI, 3))
.addExternalSymbol(tmpName)
.addImm(1); // Emit banksel for it.
}
else
assert(0 && "Can't store this register to stack slot");
}
void PIC16InstrInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
unsigned DestReg, int FI,
const TargetRegisterClass *RC) const {
PIC16TargetLowering *PTLI = TM.getTargetLowering();
DebugLoc DL;
if (I != MBB.end()) DL = I->getDebugLoc();
const Function *Func = MBB.getParent()->getFunction();
const std::string FuncName = Func->getName();
const char *tmpName = ESNames::createESName(PAN::getTempdataLabel(FuncName));
// On the order of operands here: think "movf FrameIndex, W".
if (RC == PIC16::GPRRegisterClass) {
//MachineFunction &MF = *MBB.getParent();
//MachineRegisterInfo &RI = MF.getRegInfo();
BuildMI(MBB, I, DL, get(PIC16::movf), DestReg)
.addImm(PTLI->GetTmpOffsetForFI(FI, 1))
.addExternalSymbol(tmpName)
.addImm(1); // Emit banksel for it.
}
else if (RC == PIC16::FSR16RegisterClass) {
// This is a 16-bit register and the frameindex given by llvm is of
// size two here. Break this index N into two zero based indexes and
// put one into the map. The second one is always obtained by adding 1
// to the first zero based index. In fact it is going to use 3 slots
// as saving FSRs corrupts W also and hence we need to save/restore W also.
unsigned opcode = (DestReg == PIC16::FSR0) ? PIC16::restore_fsr0
: PIC16::restore_fsr1;
BuildMI(MBB, I, DL, get(opcode), DestReg)
.addImm(PTLI->GetTmpOffsetForFI(FI, 3))
.addExternalSymbol(tmpName)
.addImm(1); // Emit banksel for it.
}
else
llvm_unreachable("Can't load this register from stack slot");
}
