[clang] [Clang][OpenMP]Default clause variable category (PR #157063)

[Alexey Bataev via cfe-commits]

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@@ -73,6 +73,18 @@ enum DefaultDataSharingAttributes {
   DSA_firstprivate = 1 << 3, /// Default data sharing attribute 'firstprivate'.
 };
 
+/// Variable Category attributes to restrict the modifier of the
+/// default clause (DefaultDataSharingAttributes)
+/// Not mentioning any Variable category attribute indicates
+/// the modifier (DefaultDataSharingAttributes) is for all variables.
+enum DefaultDataSharingVCAttributes {
+  DSA_VC_all = 0,              /// for all variables.
+  DSA_VC_aggregate = 1 << 0,   /// for aggregate variables.
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alexey-bataev wrote:

Why need unique bit values here?

https://github.com/llvm/llvm-project/pull/157063