[llvm] [JumpThreading] Limit number of free instructions (PR #75671)

[Davide Italiano via llvm-commits]

dcci wrote:

> Is this a hard requirement or a guideline?

I think it's an hard requirement. We never want `-g` to change the generated output (if it does, that's a bug).

https://github.com/llvm/llvm-project/pull/75671