: TargetLowering(TM), Subtarget(STI) {
MVT PtrVT = MVT::getIntegerVT(8 * TM.getPointerSize(0));
+ auto *Regs = STI.getSpecialRegisters();
+
// Set up the register classes.
if (Subtarget.hasHighWord())
addRegisterClass(MVT::i32, &SystemZ::GRX32BitRegClass);
computeRegisterProperties(Subtarget.getRegisterInfo());
// Set up special registers.
- setStackPointerRegisterToSaveRestore(SystemZ::R15D);
+ setStackPointerRegisterToSaveRestore(Regs->getStackPointerRegister());
// TODO: It may be better to default to latency-oriented scheduling, however
// LLVM's current latency-oriented scheduler can't handle physreg definitions
SDValue SystemZTargetLowering::lowerSTACKSAVE(SDValue Op,
SelectionDAG &DAG) const {
MachineFunction &MF = DAG.getMachineFunction();
+ const SystemZSubtarget *Subtarget = &MF.getSubtarget<SystemZSubtarget>();
+ auto *Regs = Subtarget->getSpecialRegisters();
MF.getInfo<SystemZMachineFunctionInfo>()->setManipulatesSP(true);
if (MF.getFunction().getCallingConv() == CallingConv::GHC)
report_fatal_error("Variable-sized stack allocations are not supported "
"in GHC calling convention");
return DAG.getCopyFromReg(Op.getOperand(0), SDLoc(Op),
- SystemZ::R15D, Op.getValueType());
+ Regs->getStackPointerRegister(), Op.getValueType());
}
SDValue SystemZTargetLowering::lowerSTACKRESTORE(SDValue Op,
SelectionDAG &DAG) const {
MachineFunction &MF = DAG.getMachineFunction();
+ const SystemZSubtarget *Subtarget = &MF.getSubtarget<SystemZSubtarget>();
+ auto *Regs = Subtarget->getSpecialRegisters();
MF.getInfo<SystemZMachineFunctionInfo>()->setManipulatesSP(true);
bool StoreBackchain = MF.getFunction().hasFnAttribute("backchain");
SDLoc DL(Op);
if (StoreBackchain) {
- SDValue OldSP = DAG.getCopyFromReg(Chain, DL, SystemZ::R15D, MVT::i64);
+ SDValue OldSP = DAG.getCopyFromReg(
+ Chain, DL, Regs->getStackPointerRegister(), MVT::i64);
Backchain = DAG.getLoad(MVT::i64, DL, Chain, getBackchainAddress(OldSP, DAG),
MachinePointerInfo());
}
- Chain = DAG.getCopyToReg(Chain, DL, SystemZ::R15D, NewSP);
+ Chain = DAG.getCopyToReg(Chain, DL, Regs->getStackPointerRegister(), NewSP);
if (StoreBackchain)
Chain = DAG.getStore(Chain, DL, Backchain, getBackchainAddress(NewSP, DAG),