flambda-backend: Introduce Import_info (ocaml#1036)

.depend

@@ -105,6 +105,16 @@ utils/identifiable.cmx : \
     utils/misc.cmx \
     utils/identifiable.cmi
 utils/identifiable.cmi :
+utils/import_info.cmo : \
+    utils/misc.cmi \
+    utils/compilation_unit.cmi \
+    utils/import_info.cmi
+utils/import_info.cmx : \
+    utils/misc.cmx \
+    utils/compilation_unit.cmx \
+    utils/import_info.cmi
+utils/import_info.cmi : \
+    utils/compilation_unit.cmi
 utils/int_replace_polymorphic_compare.cmo : \
     utils/int_replace_polymorphic_compare.cmi
 utils/int_replace_polymorphic_compare.cmx : \
@@ -720,6 +730,7 @@ typing/env.cmi : \
     parsing/longident.cmi \
     parsing/location.cmi \
     utils/load_path.cmi \
+    utils/import_info.cmi \
     typing/ident.cmi \
     utils/compilation_unit.cmi \
     file_formats/cmi_format.cmi \
@@ -1071,6 +1082,7 @@ typing/persistent_env.cmo : \
     parsing/location.cmi \
     utils/load_path.cmi \
     utils/lazy_backtrack.cmi \
+    utils/import_info.cmi \
     utils/consistbl.cmi \
     utils/config.cmi \
     utils/compilation_unit.cmi \
@@ -1083,6 +1095,7 @@ typing/persistent_env.cmx : \
     parsing/location.cmx \
     utils/load_path.cmx \
     utils/lazy_backtrack.cmx \
+    utils/import_info.cmx \
     utils/consistbl.cmx \
     utils/config.cmx \
     utils/compilation_unit.cmx \
@@ -1094,6 +1107,7 @@ typing/persistent_env.cmi : \
     utils/misc.cmi \
     parsing/location.cmi \
     utils/lazy_backtrack.cmi \
+    utils/import_info.cmi \
     utils/consistbl.cmi \
     utils/compilation_unit.cmi \
     file_formats/cmi_format.cmi
@@ -1786,6 +1800,7 @@ typing/typemod.cmo : \
     utils/load_path.cmi \
     typing/includemod_errorprinter.cmi \
     typing/includemod.cmi \
+    utils/import_info.cmi \
     typing/ident.cmi \
     typing/envaux.cmi \
     typing/env.cmi \
@@ -1823,6 +1838,7 @@ typing/typemod.cmx : \
     utils/load_path.cmx \
     typing/includemod_errorprinter.cmx \
     typing/includemod.cmx \
+    utils/import_info.cmx \
     typing/ident.cmx \
     typing/envaux.cmx \
     typing/env.cmx \
@@ -2080,6 +2096,7 @@ bytecomp/bytelink.cmo : \
     parsing/location.cmi \
     utils/load_path.cmi \
     bytecomp/instruct.cmi \
+    utils/import_info.cmi \
     typing/ident.cmi \
     bytecomp/emitcode.cmi \
     bytecomp/dll.cmi \
@@ -2099,6 +2116,7 @@ bytecomp/bytelink.cmx : \
     parsing/location.cmx \
     utils/load_path.cmx \
     bytecomp/instruct.cmx \
+    utils/import_info.cmx \
     typing/ident.cmx \
     bytecomp/emitcode.cmx \
     bytecomp/dll.cmx \
@@ -2113,6 +2131,7 @@ bytecomp/bytelink.cmx : \
 bytecomp/bytelink.cmi : \
     bytecomp/symtable.cmi \
     utils/misc.cmi \
+    utils/import_info.cmi \
     utils/compilation_unit.cmi \
     file_formats/cmo_format.cmi
 bytecomp/bytepackager.cmo : \
@@ -2126,6 +2145,7 @@ bytecomp/bytepackager.cmo : \
     parsing/location.cmi \
     utils/load_path.cmi \
     bytecomp/instruct.cmi \
+    utils/import_info.cmi \
     typing/ident.cmi \
     typing/env.cmi \
     bytecomp/emitcode.cmi \
@@ -2147,6 +2167,7 @@ bytecomp/bytepackager.cmx : \
     parsing/location.cmx \
     utils/load_path.cmx \
     bytecomp/instruct.cmx \
+    utils/import_info.cmx \
     typing/ident.cmx \
     typing/env.cmx \
     bytecomp/emitcode.cmx \
@@ -2286,6 +2307,7 @@ bytecomp/symtable.cmo : \
     bytecomp/meta.cmi \
     parsing/location.cmi \
     lambda/lambda.cmi \
+    utils/import_info.cmi \
     typing/ident.cmi \
     bytecomp/dll.cmi \
     utils/config.cmi \
@@ -2301,6 +2323,7 @@ bytecomp/symtable.cmx : \
     bytecomp/meta.cmx \
     parsing/location.cmx \
     lambda/lambda.cmx \
+    utils/import_info.cmx \
     typing/ident.cmx \
     bytecomp/dll.cmx \
     utils/config.cmx \
@@ -2312,6 +2335,7 @@ bytecomp/symtable.cmx : \
 bytecomp/symtable.cmi : \
     utils/misc.cmi \
     lambda/lambda.cmi \
+    utils/import_info.cmi \
     typing/ident.cmi \
     file_formats/cmo_format.cmi
 asmcomp/CSE.cmo : \
@@ -2487,6 +2511,7 @@ asmcomp/asmlink.cmo : \
     utils/misc.cmi \
     parsing/location.cmi \
     utils/load_path.cmi \
+    utils/import_info.cmi \
     asmcomp/emitaux.cmi \
     asmcomp/emit.cmi \
     utils/consistbl.cmi \
@@ -2507,6 +2532,7 @@ asmcomp/asmlink.cmx : \
     utils/misc.cmx \
     parsing/location.cmx \
     utils/load_path.cmx \
+    utils/import_info.cmx \
     asmcomp/emitaux.cmx \
     asmcomp/emit.cmx \
     utils/consistbl.cmx \
@@ -2522,6 +2548,7 @@ asmcomp/asmlink.cmx : \
     asmcomp/asmlink.cmi
 asmcomp/asmlink.cmi : \
     utils/misc.cmi \
+    utils/import_info.cmi \
     utils/compilation_unit.cmi \
     file_formats/cmx_format.cmi
 asmcomp/asmpackager.cmo : \
@@ -2535,6 +2562,7 @@ asmcomp/asmpackager.cmo : \
     utils/load_path.cmi \
     utils/linkage_name.cmi \
     lambda/lambda.cmi \
+    utils/import_info.cmi \
     middle_end/flambda/flambda_middle_end.cmi \
     middle_end/flambda/export_info.cmi \
     typing/env.cmi \
@@ -2559,6 +2587,7 @@ asmcomp/asmpackager.cmx : \
     utils/load_path.cmx \
     utils/linkage_name.cmx \
     lambda/lambda.cmx \
+    utils/import_info.cmx \
     middle_end/flambda/flambda_middle_end.cmx \
     middle_end/flambda/export_info.cmx \
     typing/env.cmx \
@@ -3421,6 +3450,7 @@ middle_end/compilenv.cmo : \
     parsing/location.cmi \
     utils/load_path.cmi \
     utils/linkage_name.cmi \
+    utils/import_info.cmi \
     typing/ident.cmi \
     middle_end/flambda/export_info.cmi \
     typing/env.cmi \
@@ -3440,6 +3470,7 @@ middle_end/compilenv.cmx : \
     parsing/location.cmx \
     utils/load_path.cmx \
     utils/linkage_name.cmx \
+    utils/import_info.cmx \
     typing/ident.cmx \
     middle_end/flambda/export_info.cmx \
     typing/env.cmx \
@@ -4050,22 +4081,26 @@ file_formats/cmi_format.cmo : \
     typing/types.cmi \
     utils/misc.cmi \
     parsing/location.cmi \
+    utils/import_info.cmi \
     utils/config.cmi \
     utils/compilation_unit.cmi \
     file_formats/cmi_format.cmi
 file_formats/cmi_format.cmx : \
     typing/types.cmx \
     utils/misc.cmx \
     parsing/location.cmx \
+    utils/import_info.cmx \
     utils/config.cmx \
     utils/compilation_unit.cmx \
     file_formats/cmi_format.cmi
 file_formats/cmi_format.cmi : \
     typing/types.cmi \
     utils/misc.cmi \
+    utils/import_info.cmi \
     utils/compilation_unit.cmi
 file_formats/cmo_format.cmi : \
     lambda/lambda.cmi \
+    utils/import_info.cmi \
     typing/ident.cmi \
     utils/compilation_unit.cmi
 file_formats/cmt_format.cmo : \
@@ -4077,6 +4112,7 @@ file_formats/cmt_format.cmo : \
     parsing/location.cmi \
     utils/load_path.cmi \
     parsing/lexer.cmi \
+    utils/import_info.cmi \
     typing/env.cmi \
     utils/config.cmi \
     utils/compilation_unit.cmi \
@@ -4092,6 +4128,7 @@ file_formats/cmt_format.cmx : \
     parsing/location.cmx \
     utils/load_path.cmx \
     parsing/lexer.cmx \
+    utils/import_info.cmx \
     typing/env.cmx \
     utils/config.cmx \
     utils/compilation_unit.cmx \
@@ -4108,6 +4145,7 @@ file_formats/cmt_format.cmi : \
     file_formats/cmi_format.cmi
 file_formats/cmx_format.cmi : \
     lambda/lambda.cmi \
+    utils/import_info.cmi \
     middle_end/flambda/export_info.cmi \
     utils/compilation_unit.cmi \
     middle_end/clambda.cmi
@@ -6427,17 +6465,17 @@ toplevel/expunge.cmo : \
     bytecomp/symtable.cmi \
     lambda/runtimedef.cmi \
     utils/misc.cmi \
+    utils/import_info.cmi \
     typing/ident.cmi \
     utils/compilation_unit.cmi \
-    file_formats/cmo_format.cmi \
     bytecomp/bytesections.cmi
 toplevel/expunge.cmx : \
     bytecomp/symtable.cmx \
     lambda/runtimedef.cmx \
     utils/misc.cmx \
+    utils/import_info.cmx \
     typing/ident.cmx \
     utils/compilation_unit.cmx \
-    file_formats/cmo_format.cmi \
     bytecomp/bytesections.cmx
 toplevel/genprintval.cmo : \
     typing/types.cmi \

asmcomp/asmlink.ml

@@ -49,8 +49,10 @@ let cmx_required = ref ([] : CU.t list)
 
 let check_consistency file_name unit crc =
   begin try
-    List.iter
-      (fun (name, crco) ->
+    Array.iter
+      (fun import ->
+        let name = Import_info.name import in
+        let crco = Import_info.crc_with_unit import in
         interfaces := name :: !interfaces;
         match crco with
           None -> ()
@@ -68,8 +70,10 @@ let check_consistency file_name unit crc =
     raise(Error(Inconsistent_interface(name, user, auth)))
   end;
   begin try
-    List.iter
-      (fun (name, crco) ->
+    Array.iter
+      (fun import ->
+        let name = Import_info.cu import in
+        let crco = Import_info.crc import in
         implementations := name :: !implementations;
         match crco with
             None ->
@@ -100,9 +104,15 @@ let check_consistency file_name unit crc =
 
 let extract_crc_interfaces () =
   Cmi_consistbl.extract !interfaces crc_interfaces
+  |> List.map (fun (name, crc_with_unit) ->
+      Import_info.create name ~crc_with_unit)
+
 let extract_crc_implementations () =
   Cmx_consistbl.extract !implementations crc_implementations
-  |> List.map (fun (name, crco) -> name, Option.map snd crco)
+  |> List.map (fun (cu, crc) ->
+       let crc = Option.map (fun ((), crc) -> crc) crc in
+       Import_info.create_normal cu ~crc)
+
 
 (* Add C objects and options and "custom" info from a library descriptor.
    See bytecomp/bytelink.ml for comments on the order of C objects. *)
@@ -137,7 +147,8 @@ let is_required name =
   try ignore (Hashtbl.find missing_globals name); true
   with Not_found -> false
 
-let add_required by (name, _crc) =
+let add_required by import =
+  let name = Import_info.cu import in
   try
     let rq = Hashtbl.find missing_globals name in
     rq := by :: !rq
@@ -199,7 +210,7 @@ let scan_file file tolink =
   | Unit (file_name,info,crc) ->
       (* This is a .cmx file. It must be linked in any case. *)
       remove_required info.ui_unit;
-      List.iter (add_required file_name) info.ui_imports_cmx;
+      Array.iter (add_required file_name) info.ui_imports_cmx;
       (info, file_name, crc) :: tolink
   | Library (file_name,infos) ->
       (* This is an archive file. Each unit contained in it will be linked
@@ -216,7 +227,7 @@ let scan_file file tolink =
              let req_by =
                Printf.sprintf "%s(%s)" file_name (ui_name |> CU.Name.to_string)
              in
-             List.iter (add_required req_by) info.ui_imports_cmx;
+             Array.iter (add_required req_by) info.ui_imports_cmx;
              (info, file_name, crc) :: reqd
            end else
            reqd)
@@ -231,6 +242,8 @@ let force_linking_of_startup ~ppf_dump =
 let make_globals_map units_list ~crc_interfaces =
   let crc_interfaces =
     crc_interfaces
+    |> List.map (fun import ->
+         Import_info.name import, Import_info.crc_with_unit import)
     |> CU.Name.Tbl.of_list
   in
   let defined =

asmcomp/asmlink.mli

@@ -26,8 +26,8 @@ val call_linker_shared: string list -> string -> unit
 
 val reset : unit -> unit
 val check_consistency: filepath -> Cmx_format.unit_infos -> Digest.t -> unit
-val extract_crc_interfaces: unit -> Cmx_format.import_info_cmi list
-val extract_crc_implementations: unit -> Cmx_format.import_info_cmx list
+val extract_crc_interfaces: unit -> Import_info.t list
+val extract_crc_implementations: unit -> Import_info.t list
 
 type error =
   | File_not_found of filepath

asmcomp/asmpackager.ml

@@ -70,8 +70,9 @@ let check_units members =
       begin match mb.pm_kind with
       | PM_intf -> ()
       | PM_impl infos ->
-          List.iter
-            (fun (unit, _) ->
+          Array.iter
+            (fun import ->
+              let unit = Import_info.cu import in
               let name = CU.name unit in
               if List.mem name forbidden
               then raise(Error(Forward_reference(mb.pm_file, name))))
@@ -174,9 +175,9 @@ let get_approx ui =
 let build_package_cmx members cmxfile =
   let unit_names =
     List.map (fun m -> m.pm_name) members in
-  let filter ~get_name lst =
-    List.filter (fun (name, _crc) ->
-      not (List.mem (get_name name) unit_names)) lst in
+  let filter lst =
+    List.filter (fun import ->
+      not (List.mem (Import_info.name import) unit_names)) lst in
   let union lst =
     List.fold_left
       (List.fold_left
@@ -207,10 +208,13 @@ let build_package_cmx members cmxfile =
           List.flatten (List.map (fun info -> info.ui_defines) units) @
           [ui.ui_unit];
       ui_imports_cmi =
-          (modname, Some (ui.ui_unit, Env.crc_of_unit modname)) ::
-          filter(Asmlink.extract_crc_interfaces()) ~get_name:(fun name -> name);
+          (Import_info.create modname
+            ~crc_with_unit:(Some (ui.ui_unit, Env.crc_of_unit modname))) ::
+            filter (Asmlink.extract_crc_interfaces ())
+          |> Array.of_list;
       ui_imports_cmx =
-          filter(Asmlink.extract_crc_implementations()) ~get_name:CU.name;
+          (filter(Asmlink.extract_crc_implementations()))
+          |> Array.of_list;
       ui_curry_fun =
           union(List.map (fun info -> info.ui_curry_fun) units);
       ui_apply_fun =