[clang] [CIR] Preserve annotate attributes on record declarations (PR #207551)

[Sirui Mu via cfe-commits]

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@@ -48,6 +48,12 @@ struct StructTypeStorage : public mlir::TypeStorage {
   bool padded;
   bool is_class;
 
+  // Annotations are payload set at completion (like members/layout), not part
+  // of the type's identity: named records are uniqued by name, so there is at
+  // most one annotation set per type. Keeping them out of the key is also
+  // required so an incomplete record can be completed in place.
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Lancern wrote:

LGTM!

https://github.com/llvm/llvm-project/pull/207551