[clang] [Clang][AArch64] Change SME attributes for shared/new/preserved state. (PR #76971)

[Sander de Smalen via cfe-commits]

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@@ -255,6 +255,22 @@ class AttributeCommonInfo {
     return SpellingIndex != SpellingNotCalculated;
   }
 };
+
+enum class KeywordAttributeParseArgumentsKind { None, Optional, Required };
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sdesmalen-arm wrote:

Done.

https://github.com/llvm/llvm-project/pull/76971