dialyzer: Compact 'file' annotations in Core code

File annotations {file, File} in Core Erlang code is replaced by
{file, FakeFile}, where FakeFile is "0", "1", ..., in order to save
memory. When a warning message is created, FakeFile is translated to
the original File (a bit awkward but easy to do).

The Core code stored in ETS tables needs less space, but more
important is that a less heap memory is used in the dataflow,
warnings, and typesig phases, allowing more parallelism.

1 files changed, 16 insertions, 6 deletions

diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl
index 639ed426df..ce292e1140 100644
--- a/lib/dialyzer/src/dialyzer_dataflow.erl
+++ b/lib/dialyzer/src/dialyzer_dataflow.erl
@@ -529,7 +529,7 @@ handle_apply_or_call([{TypeOfApply, {Fun, Sig, Contr, LocalRet}}|Left],
     case is_race_analysis_enabled(State) of
       true ->
         Ann = cerl:get_ann(Tree),
-        File = get_file(Ann),
+        File = get_file(Ann, State),
         Line = abs(get_line(Ann)),
         dialyzer_races:store_race_call(Fun, ArgTypes, Args,
                                        {File, Line}, State);
@@ -3090,7 +3090,7 @@ state__add_warning(#state{warnings = Warnings, warning_mode = true} = State,
   Ann = cerl:get_ann(Tree),
   case Force of
     true ->
-      WarningInfo = {get_file(Ann),
+      WarningInfo = {get_file(Ann, State),
                      abs(get_line(Ann)),
                      State#state.curr_fun},
       Warn = {Tag, WarningInfo, Msg},
@@ -3100,7 +3100,9 @@ state__add_warning(#state{warnings = Warnings, warning_mode = true} = State,
       case is_compiler_generated(Ann) of
         true -> State;
         false ->
-          WarningInfo = {get_file(Ann), get_line(Ann), State#state.curr_fun},
+          WarningInfo = {get_file(Ann, State),
+                         get_line(Ann),
+                         State#state.curr_fun},
           Warn = {Tag, WarningInfo, Msg},
           case Tag of
             ?WARN_CONTRACT_RANGE -> ok;
@@ -3499,6 +3501,12 @@ state__put_races(Races, State) ->
 state__records_only(#state{records = Records}) ->
   #state{records = Records}.
 
+-spec state__translate_file(file:filename(), state()) -> file:filename().
+
+state__translate_file(FakeFile, State) ->
+  #state{codeserver = CodeServer, module = Module} = State,
+  dialyzer_codeserver:translate_fake_file(CodeServer, Module, FakeFile).
+
 %%% ===========================================================================
 %%%
 %%%  Races
@@ -3570,9 +3578,11 @@ get_line([Line|_]) when is_integer(Line) -> Line;
 get_line([_|Tail]) -> get_line(Tail);
 get_line([]) -> -1.
 
-get_file([]) -> [];
-get_file([{file, File}|_]) -> File;
-get_file([_|Tail]) -> get_file(Tail).
+get_file([], _State) -> [];
+get_file([{file, FakeFile}|_], State) ->
+  state__translate_file(FakeFile, State);
+get_file([_|Tail], State) ->
+  get_file(Tail, State).
 
 is_compiler_generated(Ann) ->
   lists:member(compiler_generated, Ann) orelse (get_line(Ann) < 1).