[flang-commits] [flang] [flang] Correctly handle `!dir$ unroll` with unrolling factors of 0 and 1 (PR #126170)

[Asher Mancinelli via flang-commits]

ashermancinelli wrote:

Thanks for reviewing! I'll give David a little more time to respond. I'd like to merge this before #126082 since this fixes a crash and the other PR fixes semantics.

https://github.com/llvm/llvm-project/pull/126170