[clang] [llvm] [AArch64] Stack probing for function prologues (PR #66524)

[Oskar Wirga via cfe-commits]

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@@ -688,6 +689,68 @@ void AArch64FrameLowering::emitCalleeSavedSVERestores(
   emitCalleeSavedRestores(MBB, MBBI, true);
 }
 
+void AArch64FrameLowering::allocateSVEStackSpace(
+    MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
+    StackOffset AllocSize, StackOffset InitialOffset, bool EmitCFI) const {
+  DebugLoc DL;
+  MachineFunction &MF = *MBB.getParent();
+  const AArch64FunctionInfo &MFI = *MF.getInfo<AArch64FunctionInfo>();
+  const AArch64Subtarget &Subtarget = MF.getSubtarget<AArch64Subtarget>();
+  const AArch64RegisterInfo &RegInfo = *Subtarget.getRegisterInfo();
+  const AArch64TargetLowering &TLI = *Subtarget.getTargetLowering();
+  const TargetInstrInfo &TII = *Subtarget.getInstrInfo();
+
+  // If not probing the stack or the (uknown) allocation size is less than the
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oskarwirga wrote:

```suggestion
  // If not probing the stack or the (unknown) allocation size is less than the
```

https://github.com/llvm/llvm-project/pull/66524