OCaml compiler library : Clflags.Dump_option

`sig
type t =
Source
| Parsetree
| Typedtree
| Shape
| Match_comp
| Raw_lambda
| Lambda
| Instr
| Raw_clambda
| Clambda
| Raw_flambda
| Flambda
| Cmm
| Selection
| Combine
| CSE
| Live
| Spill
| Split
| Interf
| Prefer
| Regalloc
| Scheduling
| Linear
| Interval
val compare : Clflags.Dump_option.t -> Clflags.Dump_option.t -> int
val of_string : string -> Clflags.Dump_option.t option
val to_string : Clflags.Dump_option.t -> string
val flag : Clflags.Dump_option.t -> bool Stdlib.ref
val available : Clflags.Dump_option.t -> (unit, string) Stdlib.Result.t
end`