[llvm] [CodeGen] Make the parameter TRI required in some functions. (PR #85968)

[Xu Zhang via llvm-commits]

simonzgx wrote:

> What's the plan here - are you going to enforce that all callers pass in a non-null TRI?

I don't think so. This patch is to make the caller explicitly pass the TRI parameter, but you can still call it by passing just a nullptr.

https://github.com/llvm/llvm-project/pull/85968