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lustrec / src / main_lustre_compiler.ml @ 2823bc51

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(********************************************************************)
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(*                                                                  *)
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(*  The LustreC compiler toolset   /  The LustreC Development Team  *)
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(*  Copyright 2012 -    --   ONERA - CNRS - INPT                    *)
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(*                                                                  *)
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(*  LustreC is free software, distributed WITHOUT ANY WARRANTY      *)
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(*  under the terms of the GNU Lesser General Public License        *)
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(*  version 2.1.                                                    *)
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(*                                                                  *)
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(********************************************************************)
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open Format
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open Log
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open Utils
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open LustreSpec
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open Compiler_common
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exception StopPhase1 of program
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let usage = "Usage: lustrec [options] \x1b[4msource file\x1b[0m"
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let extensions = [".ec"; ".lus"; ".lusi"]
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(* print a .lusi header file from a source prog *)
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let print_lusi prog dirname basename extension =
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  let header = Lusic.extract_header dirname basename prog in
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  let header_name = dirname ^ "/" ^ basename ^ extension in
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  let h_out = open_out header_name in
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  let h_fmt = formatter_of_out_channel h_out in
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  begin
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    Typing.uneval_prog_generics header;
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    Clock_calculus.uneval_prog_generics header;
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    Printers.pp_lusi_header h_fmt basename header;
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    close_out h_out
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  end
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(* compile a .lusi header file *)
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let compile_header dirname  basename extension =
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  let destname = !Options.dest_dir ^ "/" ^ basename in
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  let header_name = basename ^ extension in
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  let lusic_ext = extension ^ "c" in
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  begin
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    Log.report ~level:1 (fun fmt -> fprintf fmt "@[<v>");
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    let header = parse_header true (dirname ^ "/" ^ header_name) in
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    ignore (Modules.load_header ISet.empty header);
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    ignore (check_top_decls header);
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    create_dest_dir ();
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    Log.report ~level:1
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      (fun fmt -> fprintf fmt ".. generating compiled header file %sc@," (destname ^ extension));
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    Lusic.write_lusic true header destname lusic_ext;
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    generate_lusic_header destname lusic_ext;
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    Log.report ~level:1 (fun fmt -> fprintf fmt ".. done !@ @]@ ")
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  end
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(* check whether a source file has a compiled header,
57
   if not, generate the compiled header *)
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let compile_source_to_header prog computed_types_env computed_clocks_env dirname basename extension =
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  let destname = !Options.dest_dir ^ "/" ^ basename in
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  let lusic_ext = extension ^ "c" in
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  let header_name = destname ^ lusic_ext in
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  begin
63
    if not (Sys.file_exists header_name) then
64
      begin
65
	Log.report ~level:1 (fun fmt -> fprintf fmt ".. generating compiled header file %s@," header_name);
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	Lusic.write_lusic false (Lusic.extract_header dirname basename prog) destname lusic_ext;
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	Lusic.print_lusic_to_h destname lusic_ext
68
      end
69
    else
70
      let lusic = Lusic.read_lusic destname lusic_ext in
71
      if not lusic.Lusic.from_lusi then
72
	begin
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	  Log.report ~level:1 (fun fmt -> fprintf fmt ".. generating compiled header file %s@," header_name);
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       	  Lusic.write_lusic false (Lusic.extract_header dirname basename prog) destname lusic_ext;
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	  (*List.iter (fun top_decl -> Format.eprintf "lusic: %a@." Printers.pp_decl top_decl) lusic.Lusic.contents;*)
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	  Lusic.print_lusic_to_h destname lusic_ext
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	end
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      else
79
	begin
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	  Log.report ~level:1 (fun fmt -> fprintf fmt ".. loading compiled header file %s@," header_name);
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	  Modules.check_dependency lusic destname;
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	  let header = lusic.Lusic.contents in
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	  let (declared_types_env, declared_clocks_env) = get_envs_from_top_decls header in
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	  check_compatibility
85
	    (prog, computed_types_env, computed_clocks_env)
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	    (header, declared_types_env, declared_clocks_env)
87
	end
88
  end
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let dynamic_checks () =
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  match !Options.output, !Options.spec with
94
  | "C", "C" -> true
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  | _ -> false
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(* From prog to prog *)
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let stage1 prog dirname basename =
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  (* Removing automata *)
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  let prog = expand_automata prog in
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  Log.report ~level:4 (fun fmt -> fprintf fmt ".. after automata expansion:@,  @[<v 2>@,%a@]@ " Printers.pp_prog prog);
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  (* Importing source *)
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  let _ = Modules.load_program ISet.empty prog in
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  (* Extracting dependencies *)
107
  let dependencies, type_env, clock_env = import_dependencies prog in
108
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  (* Sorting nodes *)
110
  let prog = SortProg.sort prog in
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  (* Perform inlining before any analysis *)
113
  let orig, prog =
114
    if !Options.global_inline && !Options.main_node <> "" then
115
      (if !Options.witnesses then prog else []),
116
      Inliner.global_inline basename prog type_env clock_env
117
    else (* if !Option.has_local_inline *)
118
      [],
119
      Inliner.local_inline basename prog type_env clock_env
120
  in
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  (* Checking stateless/stateful status *)
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  if Plugins.check_force_stateful () then
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    force_stateful_decls prog
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  else
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    check_stateless_decls prog;
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  (* Typing *)
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  let computed_types_env = type_decls type_env prog in
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  (* Clock calculus *)
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  let computed_clocks_env = clock_decls clock_env prog in
133
134
  (* Generating a .lusi header file only *)
135
  if !Options.lusi then
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    (* We stop here the processing and produce the current prog. It will be
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       exported as a lusi *)
138
    raise (StopPhase1 prog);
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 (* Optimization of prog: 
141
     - Unfold consts 
142
     - eliminate trivial expressions
143
 *)
144
  (*
145
  let prog = 
146
    if !Options.const_unfold || !Options.optimization >= 5 then
147
      begin
148
	Log.report ~level:1 (fun fmt -> fprintf fmt ".. eliminating constants and aliases@,");
149
	Optimize_prog.prog_unfold_consts prog
150
      end
151
    else
152
      prog
153
  in
154
  *)
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  (* Delay calculus *)
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  (* TO BE DONE LATER (Xavier)
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    if(!Options.delay_calculus)
158
    then
159
    begin
160
    Log.report ~level:1 (fun fmt -> fprintf fmt ".. initialisation analysis@?");
161
    try
162
    Delay_calculus.delay_prog Basic_library.delay_env prog
163
    with (Delay.Error (loc,err)) as exc ->
164
    Location.print loc;
165
    eprintf "%a" Delay.pp_error err;
166
    Utils.track_exception ();
167
    raise exc
168
    end;
169
  *)
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  (* Creating destination directory if needed *)
172
  create_dest_dir ();
173
174
  (* Compatibility with Lusi *)
175
  (* Checking the existence of a lusi (Lustre Interface file) *)
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  let extension = ".lusi" in
177
  compile_source_to_header prog computed_types_env computed_clocks_env dirname basename extension;
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  Typing.uneval_prog_generics prog;
180
  Clock_calculus.uneval_prog_generics prog;
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  if !Options.global_inline && !Options.main_node <> "" && !Options.witnesses then
183
    begin
184
      let orig = Corelang.copy_prog orig in
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      Log.report ~level:1 (fun fmt -> fprintf fmt ".. generating witness file@,");
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      check_stateless_decls orig;
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      let _ = Typing.type_prog type_env orig in
188
      let _ = Clock_calculus.clock_prog clock_env orig in
189
      Typing.uneval_prog_generics orig;
190
      Clock_calculus.uneval_prog_generics orig;
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      Inliner.witness
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	basename
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	!Options.main_node
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	orig prog type_env clock_env
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    end;
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  (* Computes and stores generic calls for each node,
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     only useful for ANSI C90 compliant generic node compilation *)
199
  if !Options.ansi then Causality.NodeDep.compute_generic_calls prog;
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  (*Hashtbl.iter (fun id td -> match td.Corelang.top_decl_desc with
201
    Corelang.Node nd -> Format.eprintf "%s calls %a" id
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    Causality.NodeDep.pp_generic_calls nd | _ -> ()) Corelang.node_table;*)
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  (* If some backend involving dynamic checks are active, then node annotations become runtime checks *)
205
  let prog =
206
    if dynamic_checks () then
207
      Spec.enforce_spec_prog prog
208
    else
209
      prog
210
  in
211
  
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  (* Normalization phase *)
213
  Log.report ~level:1 (fun fmt -> fprintf fmt ".. normalization@,");
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  let prog = Normalization.normalize_prog ~backend:!Options.output prog in
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  Log.report ~level:2 (fun fmt -> fprintf fmt "@[<v 2>@ %a@]@," Printers.pp_prog prog);
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  let prog =
218
    if !Options.mpfr
219
    then
220
      begin
221
	Log.report ~level:1 (fun fmt -> fprintf fmt ".. targetting MPFR library@,");
222
	Mpfr.inject_prog prog
223
      end
224
    else
225
      begin
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	Log.report ~level:1 (fun fmt -> fprintf fmt ".. keeping floating-point numbers@,");
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	prog
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      end in
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  Log.report ~level:2 (fun fmt -> fprintf fmt "@[<v 2>@ %a@]@," Printers.pp_prog prog);
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  (* Checking array accesses *)
232
  if !Options.check then
233
    begin
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      Log.report ~level:1 (fun fmt -> fprintf fmt ".. checking array accesses@,");
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      Access.check_prog prog;
236
    end;
237
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  prog, dependencies
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240
(* from source to machine code, with optimization *)
241
let stage2 prog =    
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  (* Computation of node equation scheduling. It also breaks dependency cycles
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     and warns about unused input or memory variables *)
244
  Log.report ~level:1 (fun fmt -> fprintf fmt ".. scheduling@,");
245
  let prog, node_schs = Scheduling.schedule_prog prog in
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  Log.report ~level:1 (fun fmt -> fprintf fmt "%a"              Scheduling.pp_warning_unused node_schs);
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  Log.report ~level:3 (fun fmt -> fprintf fmt "@[<v 2>@ %a@]@," Scheduling.pp_schedule node_schs);
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  Log.report ~level:3 (fun fmt -> fprintf fmt "@[<v 2>@ %a@]@," Scheduling.pp_fanin_table node_schs);
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  Log.report ~level:5 (fun fmt -> fprintf fmt "@[<v 2>@ %a@]@," Scheduling.pp_dep_graph node_schs);
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  Log.report ~level:3 (fun fmt -> fprintf fmt "@[<v 2>@ %a@]@," Printers.pp_prog prog);
251
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  (* TODO Salsa optimize prog: 
254
     - emits warning for programs with pre inside expressions
255
     - make sure each node arguments and memory is bounded by a local annotation
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     - introduce fresh local variables for each real pure subexpression
257
  *)
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  (* DFS with modular code generation *)
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  Log.report ~level:1 (fun fmt -> fprintf fmt ".. machines generation@,");
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  let machine_code = Machine_code.translate_prog prog node_schs in
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  Log.report ~level:3 (fun fmt -> fprintf fmt ".. generated machines (unoptimized):@ %a@ "Machine_code.pp_machines machine_code);
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  (* Optimize machine code *)
265
  let machine_code =
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    if !Options.optimization >= 4 (* && !Options.output <> "horn" *) then
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      begin
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	Log.report ~level:1 
269
	  (fun fmt -> fprintf fmt ".. machines optimization: sub-expression elimination@,");
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	let machine_code = Optimize_machine.machines_cse machine_code in
271
	Log.report ~level:3 (fun fmt -> fprintf fmt ".. generated machines (sub-expr elim):@ %a@ "Machine_code.pp_machines machine_code);
272
	machine_code
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      end
274
    else
275
      machine_code
276
  in
277
  (* Optimize machine code *)
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  let machine_code, removed_table = 
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    if !Options.optimization >= 2 (*&& !Options.output <> "horn"*) then
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      begin
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	Log.report ~level:1 (fun fmt -> fprintf fmt 
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	  ".. machines optimization: const. inlining (partial eval. with const)@,");
283
	let machine_code, removed_table = Optimize_machine.machines_unfold (Corelang.get_consts prog) node_schs machine_code in
284
	Log.report ~level:3 (fun fmt -> fprintf fmt "\t@[Eliminated constants: @[%a@]@]@ "
285
	  (pp_imap Optimize_machine.pp_elim) removed_table);
286
	Log.report ~level:3 (fun fmt -> fprintf fmt ".. generated machines (const inlining):@ %a@ "Machine_code.pp_machines machine_code);	
287
	machine_code, removed_table
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      end
289
    else
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      machine_code, IMap.empty
291
  in  
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  (* Optimize machine code *)
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  let machine_code =
294
    if !Options.optimization >= 3 && not (Corelang.functional_backend ()) then
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      begin
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	Log.report ~level:1 (fun fmt -> fprintf fmt ".. machines optimization: minimize stack usage by reusing variables@,");
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	let node_schs    = Scheduling.remove_prog_inlined_locals removed_table node_schs in
298
	let reuse_tables = Scheduling.compute_prog_reuse_table node_schs in
299
	Optimize_machine.machines_fusion (Optimize_machine.machines_reuse_variables machine_code reuse_tables)
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      end
301
    else
302
      machine_code
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  in
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305
  (* Salsa optimize machine code *)
306
  (*
307
  let machine_code = 
308
    if !Options.salsa_enabled then
309
      begin
310
	check_main ();
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	Log.report ~level:1 (fun fmt -> fprintf fmt ".. salsa machines optimization: optimizing floating-point accuracy with Salsa@,");
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	(* Selecting float constants for Salsa *)
313
	let constEnv = List.fold_left (
314
	  fun accu c_topdecl ->
315
	    match c_topdecl.top_decl_desc with
316
	    | Const c when Types.is_real_type c.const_type  ->
317
	      (c.const_id, c.const_value) :: accu
318
	    | _ -> accu
319
	) [] (Corelang.get_consts prog) 
320
	in
321
	List.map 
322
	  (Machine_salsa_opt.machine_t2machine_t_optimized_by_salsa constEnv) 
323
	  machine_code 
324
      end
325
    else
326
      machine_code
327
  in
328
  Log.report ~level:3 (fun fmt -> fprintf fmt "@[<v 2>@ %a@]@ "
329
    (Utils.fprintf_list ~sep:"@ " Machine_code.pp_machine)
330
    machine_code);
331
  *)
332
  machine_code
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(* printing code *)
336
let stage3 prog machine_code dependencies basename =
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  let basename    =  Filename.basename basename in
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  match !Options.output with
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    "C" -> 
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      begin
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	Log.report ~level:1 (fun fmt -> fprintf fmt ".. C code generation@,");
342
	C_backend.translate_to_c
343
	  (* alloc_header_file source_lib_file source_main_file makefile_file *)
344
	  basename prog machine_code dependencies
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      end
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  | "java" ->
347
     begin
348
       (Format.eprintf "internal error: sorry, but not yet supported !"; assert false)
349
     (*let source_file = basename ^ ".java" in
350
       Log.report ~level:1 (fun fmt -> fprintf fmt ".. opening file %s@,@?" source_file);
351
       let source_out = open_out source_file in
352
       let source_fmt = formatter_of_out_channel source_out in
353
       Log.report ~level:1 (fun fmt -> fprintf fmt ".. java code generation@,@?");
354
       Java_backend.translate_to_java source_fmt basename normalized_prog machine_code;*)
355
     end
356
  | "horn" ->
357
     begin
358
       let destname = !Options.dest_dir ^ "/" ^ basename in
359
       let source_file = destname ^ ".smt2" in (* Could be changed *)
360
       let source_out = open_out source_file in
361
       let fmt = formatter_of_out_channel source_out in
362
       Log.report ~level:1 (fun fmt -> fprintf fmt ".. hornification@,");
363
       Horn_backend.translate fmt basename prog (Machine_code.arrow_machine::machine_code);
364
       (* Tracability file if option is activated *)
365
       if !Options.traces then (
366
	 let traces_file = destname ^ ".traces.xml" in (* Could be changed *)
367
	 let traces_out = open_out traces_file in
368
	 let fmt = formatter_of_out_channel traces_out in
369
         Log.report ~level:1 (fun fmt -> fprintf fmt ".. tracing info@,");
370
	 Horn_backend_traces.traces_file fmt basename prog machine_code;
371
       )
372
     end
373
  | "lustre" ->
374
     begin
375
       let destname = !Options.dest_dir ^ "/" ^ basename in
376
       let source_file = destname ^ ".lustrec.lus" in (* Could be changed *)
377
       let source_out = open_out source_file in
378
       let fmt = formatter_of_out_channel source_out in
379
       Printers.pp_prog fmt prog;
380
       (*	Lustre_backend.translate fmt basename normalized_prog machine_code *)
381
       ()
382
     end
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  | "emf" ->
384
     begin
385
       let destname = !Options.dest_dir ^ "/" ^ basename in
386
       let source_file = destname ^ ".emf" in (* Could be changed *)
387
       let source_out = open_out source_file in
388
       let fmt = formatter_of_out_channel source_out in
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       EMF_backend.translate fmt basename prog machine_code;
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       ()
391
     end
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393
  | _ -> assert false
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395
(* compile a .lus source file *)
396
let rec compile_source dirname basename extension =
397
  let source_name = dirname ^ "/" ^ basename ^ extension in
398
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  Log.report ~level:1 (fun fmt -> fprintf fmt "@[<v 0>");
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401
  (* Parsing source *)
402
  let prog = parse_source source_name in
403
404
  let prog =
405
    if !Options.mpfr then
406
      Mpfr.mpfr_module::prog
407
    else
408
      prog
409
  in
410
  let prog, dependencies = 
411 521e2a6b ploc
    Log.report ~level:1 (fun fmt -> fprintf fmt "@[<v 2>.. Phase 1 : Normalisation@,");
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    try 
413
      stage1 prog dirname basename
414
    with StopPhase1 prog -> (
415
      if !Options.lusi then
416
	begin
417
	  let lusi_ext = extension ^ "i" in
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	  Log.report ~level:1 (fun fmt -> fprintf fmt ".. generating interface file %s@ " (basename ^ lusi_ext));
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	  print_lusi prog dirname basename lusi_ext;
420
	  Log.report ~level:1 (fun fmt -> fprintf fmt ".. done !@ @]@.");
421
	  exit 0
422
	end
423
      else
424
        assert false
425
    )
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  in
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  Log.report ~level:1 (fun fmt -> fprintf fmt "@]@,");
428
  Log.report ~level:3 (fun fmt -> fprintf fmt ".. Normalized program:@ %a@ "Printers.pp_prog prog);
429
430
  Log.report ~level:1 (fun fmt -> fprintf fmt "@[<v 2>.. Phase 2 : Machines generation@,");
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432
  let machine_code = 
433
    stage2 prog 
434
  in
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436
  Log.report ~level:1 (fun fmt -> fprintf fmt "@]@ ");
437
  Log.report ~level:3 (fun fmt -> fprintf fmt ".. Generated machines:@ %a@ "Machine_code.pp_machines machine_code);
438
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  if Scopes.Plugin.show_scopes () then
440
    begin
441
      let all_scopes = Scopes.compute_scopes prog !Options.main_node in
442
      (* Printing scopes *)
443
      if !Options.verbose_level >= 1 then
444
	Format.printf "Possible scopes are:@   ";
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      Format.printf "@[<v>%a@ @]@ @?" Scopes.print_scopes all_scopes;
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      exit 0
447
	
448
    end;
449
450 ca88e660 Ploc
  let machine_code = Plugins.refine_machine_code prog machine_code in
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452
  stage3 prog machine_code dependencies basename;
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  begin
454 ca88e660 Ploc
    Log.report ~level:1 (fun fmt -> fprintf fmt ".. done !@ @]@.");
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    (* We stop the process here *)
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    exit 0
457
  end
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459
let compile dirname basename extension =
460
  match extension with
461
  | ".lusi"  -> compile_header dirname basename extension
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  | ".lus"   -> compile_source dirname basename extension
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  | _        -> assert false
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465
let anonymous filename =
466
  let ok_ext, ext = List.fold_left
467
    (fun (ok, ext) ext' ->
468
      if not ok && Filename.check_suffix filename ext' then
469
	true, ext'
470
      else
471
	ok, ext)
472
    (false, "") extensions in
473
  if ok_ext then
474
    let dirname = Filename.dirname filename in
475
    let basename = Filename.chop_suffix (Filename.basename filename) ext in
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    compile dirname basename ext
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  else
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    raise (Arg.Bad ("Can only compile *.lusi, *.lus or *.ec files"))
479
480
let _ =
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  Global.initialize ();
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  Corelang.add_internal_funs ();
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  try
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    Printexc.record_backtrace true;
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    let options = Options_management.lustrec_options @ (Plugins.options ()) in
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488
    Arg.parse options anonymous usage
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  with
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  | Parse.Error _
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  | Types.Error (_,_) | Clocks.Error (_,_)
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  | Corelang.Error _ (*| Task_set.Error _*)
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  | Causality.Error _ -> exit 1
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  | Sys_error msg -> (eprintf "Failure: %s@." msg)
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  | exc -> (track_exception (); raise exc)
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497
(* Local Variables: *)
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(* compile-command:"make -C .." *)
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(* End: *)