[clang] [clang][OpenMP] Keep 'requires' directives read from an AST file (PR #220058)

[Alexey Bataev via cfe-commits]

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@@ -5279,6 +5281,21 @@ void ASTWriter::WriteDeclsWithEffectsToVerify(Sema &SemaRef) {
   Stream.EmitRecord(DECLS_WITH_EFFECTS_TO_VERIFY, Record);
 }
 
+/// Write the OpenMP 'requires' directives seen in this translation unit.
+void ASTWriter::WriteOpenMPRequiresDecls(Sema &SemaRef) {
+  if (!SemaRef.getLangOpts().OpenMP)
+    return;
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alexey-bataev wrote:

```suggestion
```
You can safely drop this

https://github.com/llvm/llvm-project/pull/220058