b153c05cba
Add uplifting from `scf.while` to `scf.for`. This uplifting expects a very specific ops pattern: * `before` block consisting of single `arith.cmp` op * `after` block containing `arith.addi` We also have a set of patterns to cleanup `scf.while` loops to get them close to the desired form, they will be added in separate PRs. This is part of upstreaming `numba-mlir` scf uplifting pipeline: `cf -> scf.while -> scf.for -> scf.parallel` Original code: https://github.com/numba/numba-mlir/blob/main/mlir/lib/Transforms/PromoteToParallel.cpp