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|
module Knowledge = struct
type 'a t =
{ pre: 'a
; post: 'a
}
let pre t = t.pre
let post t = t.post
let alter ?pre ?post t =
let t = match pre with
| Some pre -> {t with pre = pre}
| None -> t
in
let t = match post with
| Some post -> {t with post = post}
| None -> t
in
t
let make pre post : 'a t = {pre; post}
type 'a table = (Ir.label, 'a t) Hashtbl.t
end
module BlockKnowledge = struct
type 'a t =
| Simple of 'a Knowledge.t
| Complex of
{ block: 'a Knowledge.t
; body: ('a Knowledge.t * Ir.instr) list
; terminator: 'a Knowledge.t * Ir.terminator
}
let block = function
| Simple t -> t
| Complex {block; _} -> block
let pre t = Knowledge.pre @@ block t
let post t = Knowledge.post @@ block t
let terminator = function
| Simple _ -> failwith "BlockKnowledge.terminator"
| Complex t-> t.terminator
let body = function
| Simple _ -> failwith "BlockKnowledge.body"
| Complex t -> t.body
let terminator_instr t = snd @@ terminator t
let terminator_kw t = fst @@ terminator t
let make_complex ~block ~body ~terminator =
Complex { block; body; terminator }
let make_simple t = Simple t
type 'a table = (Ir.label, 'a t) Hashtbl.t
let alter_prepost ?pre ?post = function
| Simple t ->
Simple (Knowledge.alter ?pre ?post t)
| Complex {block; body; terminator} ->
let block = Knowledge.alter ?pre ?post block in
Complex {block; body; terminator}
let is_complex = function
| Complex _ -> true
| Simple _ -> false
end
|
