[clang] [C++20] [Modules] [Itanium ABI] Generate the vtable in the module unit of dynamic classes (PR #75912)

[Iain Sandoe via cfe-commits]

https://github.com/iains commented:

I am going to defer to @rjmccall and @dwblaikie on this one (the comments so far seem reasonable to me).


https://github.com/llvm/llvm-project/pull/75912