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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Errors
open Names
open Univ
open Nativelib
open Reduction
open Util
open Nativevalues
open Nativecode
(** This module implements the conversion test by compiling to OCaml code *)
let rec conv_val env pb lvl cu v1 v2 =
if v1 == v2 then ()
else
match kind_of_value v1, kind_of_value v2 with
| Vaccu k1, Vaccu k2 ->
conv_accu env pb lvl cu k1 k2
| Vfun f1, Vfun f2 ->
let v = mk_rel_accu lvl in
conv_val env CONV (lvl+1) cu (f1 v) (f2 v)
| Vconst i1, Vconst i2 ->
if not (Int.equal i1 i2) then raise NotConvertible
| Vblock b1, Vblock b2 ->
let n1 = block_size b1 in
let n2 = block_size b2 in
if not (Int.equal (block_tag b1) (block_tag b2)) || not (Int.equal n1 n2) then
raise NotConvertible;
let rec aux lvl max b1 b2 i cu =
if Int.equal i max then
conv_val env CONV lvl cu (block_field b1 i) (block_field b2 i)
else
(conv_val env CONV lvl cu (block_field b1 i) (block_field b2 i);
aux lvl max b1 b2 (i+1) cu)
in
aux lvl (n1-1) b1 b2 0 cu
| Vfun f1, _ ->
conv_val env CONV lvl cu v1 (fun x -> v2 x)
| _, Vfun f2 ->
conv_val env CONV lvl cu (fun x -> v1 x) v2
| _, _ -> raise NotConvertible
and conv_accu env pb lvl cu k1 k2 =
let n1 = accu_nargs k1 in
let n2 = accu_nargs k2 in
if not (Int.equal n1 n2) then raise NotConvertible;
if Int.equal n1 0 then
conv_atom env pb lvl (atom_of_accu k1) (atom_of_accu k2) cu
else
(conv_atom env pb lvl (atom_of_accu k1) (atom_of_accu k2) cu;
List.iter2 (conv_val env CONV lvl cu) (args_of_accu k1) (args_of_accu k2))
and conv_atom env pb lvl a1 a2 cu =
if a1 == a2 then ()
else
match a1, a2 with
| Arel i1, Arel i2 ->
if not (Int.equal i1 i2) then raise NotConvertible
| Aind ind1, Aind ind2 ->
if not (eq_puniverses eq_ind ind1 ind2) then raise NotConvertible
| Aconstant c1, Aconstant c2 ->
if not (eq_puniverses eq_constant c1 c2) then raise NotConvertible
| Asort s1, Asort s2 ->
check_sort_cmp_universes env pb s1 s2 cu
| Avar id1, Avar id2 ->
if not (Id.equal id1 id2) then raise NotConvertible
| Acase(a1,ac1,p1,bs1), Acase(a2,ac2,p2,bs2) ->
if not (eq_ind a1.asw_ind a2.asw_ind) then raise NotConvertible;
conv_accu env CONV lvl cu ac1 ac2;
let tbl = a1.asw_reloc in
let len = Array.length tbl in
if Int.equal len 0 then conv_val env CONV lvl cu p1 p2
else begin
conv_val env CONV lvl cu p1 p2;
let max = len - 1 in
let rec aux i =
let tag,arity = tbl.(i) in
let ci =
if Int.equal arity 0 then mk_const tag
else mk_block tag (mk_rels_accu lvl arity) in
let bi1 = bs1 ci and bi2 = bs2 ci in
if Int.equal i max then conv_val env CONV (lvl + arity) cu bi1 bi2
else (conv_val env CONV (lvl + arity) cu bi1 bi2; aux (i+1)) in
aux 0
end
| Afix(t1,f1,rp1,s1), Afix(t2,f2,rp2,s2) ->
if not (Int.equal s1 s2) || not (Array.equal Int.equal rp1 rp2) then raise NotConvertible;
if f1 == f2 then ()
else conv_fix env lvl t1 f1 t2 f2 cu
| (Acofix(t1,f1,s1,_) | Acofixe(t1,f1,s1,_)),
(Acofix(t2,f2,s2,_) | Acofixe(t2,f2,s2,_)) ->
if not (Int.equal s1 s2) then raise NotConvertible;
if f1 == f2 then ()
else
if not (Int.equal (Array.length f1) (Array.length f2)) then raise NotConvertible
else conv_fix env lvl t1 f1 t2 f2 cu
| Aprod(_,d1,c1), Aprod(_,d2,c2) ->
conv_val env CONV lvl cu d1 d2;
let v = mk_rel_accu lvl in
conv_val env pb (lvl + 1) cu (d1 v) (d2 v)
| _, _ -> raise NotConvertible
(* Precondition length t1 = length f1 = length f2 = length t2 *)
and conv_fix env lvl t1 f1 t2 f2 cu =
let len = Array.length f1 in
let max = len - 1 in
let fargs = mk_rels_accu lvl len in
let flvl = lvl + len in
let rec aux i =
conv_val env CONV lvl cu t1.(i) t2.(i);
let fi1 = napply f1.(i) fargs in
let fi2 = napply f2.(i) fargs in
if Int.equal i max then conv_val env CONV flvl cu fi1 fi2
else (conv_val env CONV flvl cu fi1 fi2; aux (i+1)) in
aux 0
let native_conv pb sigma env t1 t2 =
if !Flags.no_native_compiler then begin
let msg = "Native compiler is disabled, "^
"falling back to VM conversion test." in
Pp.msg_warning (Pp.str msg);
vm_conv pb env t1 t2
end
else
let penv = Environ.pre_env env in
let ml_filename, prefix = get_ml_filename () in
let code, upds = mk_conv_code penv sigma prefix t1 t2 in
match compile ml_filename code with
| (true, fn) ->
begin
if !Flags.debug then Pp.msg_debug (Pp.str "Running test...");
let t0 = Sys.time () in
call_linker ~fatal:true prefix fn (Some upds);
let t1 = Sys.time () in
let time_info = Format.sprintf "Evaluation done in %.5f@." (t1 -. t0) in
if !Flags.debug then Pp.msg_debug (Pp.str time_info);
(* TODO change 0 when we can have deBruijn *)
conv_val env pb 0 (Environ.universes env) !rt1 !rt2
end
| _ -> anomaly (Pp.str "Compilation failure")
let _ = set_nat_conv native_conv
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