[PATCH] D121881: [RISCV][RVV] Select unmasked TU RVV pseudos in a DAG post-process

[ShihPo Hung via Phabricator via llvm-commits]

arcbbb added a comment.

In D121881#3447794 <https://reviews.llvm.org/D121881#3447794>, @frasercrmck wrote:

> I'm glad we don't need to add dummy pseudos for this to work :)
>
> This is now looking good, thank you: just to check - there's no way to //dynamically// check whether the `TU` pseudo exists in TableGen? That would remove the need for `HasTU` which I'd find a bit cleaner.

I read through the TableGen document several times for this, but it is a pity that I didn't discover any operator that can help.


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