[llvm] [SCEVExpander] Relax hoisting condition for AddRec start (PR #75916)

[Sanjoy Das via llvm-commits]

sanjoy wrote:

Thanks, I don't have any objections on the PR, but please wait on an explicit approval from someone more current on the codebase (@nikic or @preames).

https://github.com/llvm/llvm-project/pull/75916