[clang] [clang][OpenMP] Implement `isOpenMPExecutableDirective` (PR #97089)

[Krzysztof Parzyszek via cfe-commits]

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@@ -368,6 +368,14 @@ bool needsTaskBasedThreadLimit(OpenMPDirectiveKind DKind);
 /// is restricted only to memory order clauses of "OMPC_acquire",
 /// "OMPC_relaxed" and "OMPC_seq_cst".
 bool checkFailClauseParameter(OpenMPClauseKind FailClauseParameter);
+
+/// Checks if the specified directive is considered as "executable". This
+/// combines the OpenMP categories of "executable" and "subsidiary", plus
+/// any other directives that are should be treated as executable.
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kparzysz wrote:

Done

https://github.com/llvm/llvm-project/pull/97089