[llvm] [TableGen] Diagnose sub-register indices that overflow their register (PR #206346)

[Taimuraz Kaitmazov via llvm-commits]

atassis wrote:

@github-actions Confirming I've read the contribution policies, including the AI Tool Use Policy. AI usage: this patch was drafted with AI assistance; the design, the false-positive exclusions, and the tests were authored/validated by me (ran -gen-register-info over all in-tree targets + the full llvm/test/TableGen suite, clean)

https://github.com/llvm/llvm-project/pull/206346