[llvm] [AArch64] SME implementation for agnostic-ZA functions (PR #120150)

[Paul Walker via llvm-commits]

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@@ -8882,6 +8993,9 @@ AArch64TargetLowering::LowerCall(CallLoweringInfo &CLI,
   };
 
   bool RequiresLazySave = CallerAttrs.requiresLazySave(CalleeAttrs);
+  bool RequiresSaveAllZA =
+      CallerAttrs.requiresPreservingAllZAState(CalleeAttrs);
+  SDValue ZAStateBuffer;
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paulwalker-arm wrote:

This looks unused?

https://github.com/llvm/llvm-project/pull/120150