The conversion from the Loops dialect to the Standard dialect, also known as
loop-to-cfg lowering, has been historically a function pass. It can be required
on non-Standard function Ops, in particular the recently introduced GPU
functions. Make the conversion an operation pass instead of a function pass.
PiperOrigin-RevId: 285814560
This makes the name of the conversion pass more consistent with the naming
scheme, since it actually converts from the Loop dialect to the Standard
dialect rather than working with arbitrary control flow operations.
PiperOrigin-RevId: 272612112
