[clang] [llvm] [AArch64][SME2] Add ldr_zt, str_zt builtins and intrinsics (PR #72849)

[David Sherwood via cfe-commits]

================
@@ -2748,6 +2748,22 @@ AArch64TargetLowering::EmitFill(MachineInstr &MI, MachineBasicBlock *BB) const {
   return BB;
 }
 
+MachineBasicBlock *AArch64TargetLowering::EmitZTSpillFill(MachineInstr &MI,
+                                                          MachineBasicBlock *BB,
+                                                          bool IsSpill) const {
+  const TargetInstrInfo *TII = Subtarget->getInstrInfo();
+  MachineInstrBuilder MIB;
+  if (IsSpill) {
----------------
david-arm wrote:

I think this can be simplified to

```
  unsigned Opc = IsSpill ? AArch64::STR_TX : AArch64::LDR_TX;
  MIB = BuildMI(*BB, MI, MI.getDebugLoc(), TII->get(Opc));
  MIB.addReg(MI.getOperand(0).getReg());
  MIB.add(MI.getOperand(1)); // Base
```

https://github.com/llvm/llvm-project/pull/72849