[clang] Reland [C++20] [Modules] [Itanium ABI] Generate the vtable in the mod… (PR #102287)

[Matheus Izvekov via cfe-commits]

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@@ -12432,7 +12432,7 @@ bool ASTContext::DeclMustBeEmitted(const Decl *D) {
     return false;
 
   // Variables in other module units shouldn't be forced to be emitted.
-  if (VD->isInAnotherModuleUnit())
+  if (VD->shouldEmitInExternalSource())
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mizvekov wrote:

It seems the comment needs updating.

https://github.com/llvm/llvm-project/pull/102287