[llvm] [RISCV] Porting hasAllNBitUsers to RISCV GISel for instruction select (PR #125795)

[Luke Lau via llvm-commits]

lukel97 wrote:

> I had a major git issue where my previous PR would not sync for whatever reason

Just a heads up I've been seeing the same issue this week where the PR wouldn't update to show any new pushed commits and was stuck in "processing updates". Pushing an empty commit seems to fix it. Not sure what's going on, I presume it's a GitHub issue

https://github.com/llvm/llvm-project/pull/125795