[PATCH] D90635: [TableGen] Add true and false literals to represent booleans

[Jessica Clarke via Phabricator via llvm-commits]

jrtc27 added a comment.

In D90635#2377186 <https://reviews.llvm.org/D90635#2377186>, @Paul-C-Anagnostopoulos wrote:

> I would have to invent a boolean type to prevent that assignment. That would be such a box of frogs that I quickly gave up on the idea. I'm not even sure we could do it compatibly. What would !eq(x, y) produce? And I don't think people would want !if(pred, ...) to require a boolean, since it doesn't in C++. [Much to my chagrin, and perhaps yours.]
>
> Now, I might be able to make a special case out of field and let assignments. But do we want true/false suddenly to become "sort of a typed literal"?
>
> My heart is with you, but I'm not sure we could do it.

Hm, if those already produce an integer rather than `bit`/`bits<1>` then yeah it seems our hands are tied here without disruptive changes.


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