[llvm] [AArch64] Fix SVE callee-save layout for nounwind functions on Windows (PR #156467)

[Benjamin Maxwell via llvm-commits]

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@@ -3334,8 +3334,9 @@ static void computeCalleeSaveRegisterPairs(
         break;
       case RegPairInfo::FPR64:
         if (AArch64::FPR64RegClass.contains(NextReg) &&
-            !invalidateWindowsRegisterPairing(RPI.Reg1, NextReg, NeedsWinCFI,
-                                              IsFirst, TRI))
+            !invalidateRegisterPairing(
+                RPI.Reg1, NextReg, IsWindows, NeedsWinCFI,
+                /*NeedsFrameRecord=*/false, IsFirst, TRI))
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MacDue wrote:

Is there a reason to change this to `invalidateRegisterPairing`? IIUC the only difference is the `NeedsFrameRecord` case (which is set to false here). 

https://github.com/llvm/llvm-project/pull/156467