[llvm] [TableGen] Complete the support for artificial registers (PR #183371)

[Ivan Kosarev via llvm-commits]

kosarev wrote:

Doesn't reproduce for me with gcc 13.3.0, debug or release+assert builds, on the same e30f9c19464bcf1bf1e9f69b63884fb78ad2d05d.

Does it crash on debug builds? If so, can you post the full debug backtrack here so I could see the source locations?

https://github.com/llvm/llvm-project/pull/183371