[llvm] [SimplifyCFG] Increase iterative simplification convergence limit. (PR #178406)

[Marcos Maronas via llvm-commits]

maarquitos14 wrote:

For context, I have a module that requires 1675 to converge, but is otherwise a legal module, and I don't see why it shouldn't be supported. I'm open to other suggestions, e.g. adding the possibility to update the limit through a command line option.

https://github.com/llvm/llvm-project/pull/178406