[llvm] [TableGen] Extend direct lookup to instruction values in generic tables. (PR #80486)

[Piotr Sobczak via llvm-commits]

piotrAMD wrote:

> > CC @nvjle (not sure if notifications are sent without explicit mention)
> 
> Thanks @piotrAMD, I'll look into this in detail sometime this week. At first glance it does seem there may be a potential problem, but there is no actual failure that I can see. All testing is good thus far, including for AMDGPU. But we surely want this to be bullet proof.

Thanks, I'll try to come up with a reproducer.

https://github.com/llvm/llvm-project/pull/80486