[clang] [llvm] [AArch64][SME] Save VG for unwind info when changing streaming-mode (PR #83301)

[Sander de Smalen via llvm-commits]

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@@ -2995,7 +3062,9 @@ bool AArch64FrameLowering::spillCalleeSavedRegisters(
     ArrayRef<CalleeSavedInfo> CSI, const TargetRegisterInfo *TRI) const {
   MachineFunction &MF = *MBB.getParent();
   const TargetInstrInfo &TII = *MF.getSubtarget().getInstrInfo();
+  AArch64FunctionInfo *AFI = MF.getInfo<AArch64FunctionInfo>();
   bool NeedsWinCFI = needsWinCFI(MF);
+  bool HasSVE = MF.getSubtarget<AArch64Subtarget>().hasSVE();
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sdesmalen-arm wrote:

nit: this only has one use, which seems quite far away from the definition. Perhaps just inline it?

https://github.com/llvm/llvm-project/pull/83301