[llvm] ValueTracking: Skip threadlocal.address in computeKnownBits (PR #88435)

[Matthias Braun via llvm-commits]

MatzeB wrote:

Yep, I also just noticed that `IRBuilder::CreateThreadLocalAddress` already transfers the alignment of the target which I missed when I manually created LLVM-IR for tests. Anyway having an InstCombine rule that transfers minimum alignment is a good idea as well. Changed.

https://github.com/llvm/llvm-project/pull/88435