[llvm-commits] Tblgen refactoring

[Malul, Elior]

Hi all, attached is a small patch that I think makes tblgen somewhat more maintainable.

The way code is at the moment, if one want's to add a new tblgen type (that is to subclass 'RecTy'),
Not only he/she compelled to add implementation to all variants of 'baseClassOf',
one also needs to add a new 'baseClassOf' method for the newly added types to *all* the types in the hierarchy.
The attached patch tries to deal with that phenomena.

I will appreciate if those who care about tblgen will review it.
Thx, Elior
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