File 2003-dialyzer_callgraph-Optimize-module_postord... of Package erlang

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File 2003-dialyzer_callgraph-Optimize-module_postorder-1-and-m.patch of Package erlang (Revision 4d643f2a582dd56ae31bd6a44d721f27)

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From 644184ca7c0c80e6c766aa4c3728aa992c498efb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Mon, 13 Sep 2021 16:16:17 +0200
Subject: [PATCH 03/20] dialyzer_callgraph: Optimize module_postorder/1 and
 module_deps/1

---
 lib/dialyzer/src/dialyzer_callgraph.erl | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/dialyzer/src/dialyzer_callgraph.erl b/lib/dialyzer/src/dialyzer_callgraph.erl
index f858a81e63..fcf2c9d8af 100644
--- a/lib/dialyzer/src/dialyzer_callgraph.erl
+++ b/lib/dialyzer/src/dialyzer_callgraph.erl
@@ -281,10 +281,10 @@ modules(#callgraph{digraph = DG}) ->
 -spec module_postorder(callgraph()) -> {[module()], {'d', digraph:graph()}}.
 
 module_postorder(#callgraph{digraph = DG}) ->
-  Edges = lists:foldl(fun edge_fold/2, sets:new(), digraph_edges(DG)),
-  Nodes = sets:from_list([M || {M,_F,_A} <- digraph_vertices(DG)]),
+  Edges = lists:foldl(fun edge_fold/2, sets:new([{version, 2}]), digraph_edges(DG)),
+  Modules = ordsets:from_list([M || {M,_F,_A} <- digraph_vertices(DG)]),
   MDG = digraph:new([acyclic]),
-  digraph_confirm_vertices(sets:to_list(Nodes), MDG),
+  digraph_confirm_vertices(Modules, MDG),
   Foreach = fun({M1,M2}) -> _ = digraph:add_edge(MDG, M1, M2) end,
   lists:foreach(Foreach, sets:to_list(Edges)),
   %% The out-neighbors of a vertex are the vertices called directly.
@@ -303,14 +303,14 @@ edge_fold(_, Set) -> Set.
 -spec module_deps(callgraph()) -> mod_deps().
 
 module_deps(#callgraph{digraph = DG}) ->
-  Edges = lists:foldl(fun edge_fold/2, sets:new(), digraph_edges(DG)),
-  Nodes = sets:from_list([M || {M,_F,_A} <- digraph_vertices(DG)]),
+  Edges = lists:foldl(fun edge_fold/2, sets:new([{version, 2}]), digraph_edges(DG)),
+  Modules = ordsets:from_list([M || {M,_F,_A} <- digraph_vertices(DG)]),
   MDG = digraph:new(),
-  digraph_confirm_vertices(sets:to_list(Nodes), MDG),
+  digraph_confirm_vertices(Modules, MDG),
   Foreach = fun({M1,M2}) -> check_add_edge(MDG, M1, M2) end,
   lists:foreach(Foreach, sets:to_list(Edges)),
   Deps = [{N, ordsets:from_list(digraph:in_neighbours(MDG, N))}
-	  || N <- sets:to_list(Nodes)],
+	  || N <- Modules],
   digraph_delete(MDG),
   dict:from_list(Deps).
 
-- 
2.31.1

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File 2003-dialyzer_callgraph-Optimize-module_postorder-1-and-m.patch of Package erlang (Revision 4d643f2a582dd56ae31bd6a44d721f27)

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