dot-to-map-get.patch

diff --git a/lib/elixir/src/elixir_erl_pass.erl b/lib/elixir/src/elixir_erl_pass.erl
index f1c13ca24..7b3358011 100644
--- a/lib/elixir/src/elixir_erl_pass.erl
+++ b/lib/elixir/src/elixir_erl_pass.erl
@@ -237,40 +237,12 @@ translate({{'.', _, [Left, Right]}, Meta, []}, _Ann, S)
   TRight = {atom, Ann, Right},
 
   Generated = erl_anno:set_generated(true, Ann),
-  {InnerVar, SI} = elixir_erl_var:build('_', SL),
-  TInnerVar = {var, Generated, InnerVar},
-  {Var, SV} = elixir_erl_var:build('_', SI),
-  TVar = {var, Generated, Var},
 
   case proplists:get_value(no_parens, Meta, false) of
     true ->
-      TError = {tuple, Ann, [{atom, Ann, badkey}, TRight, TVar]},
-      {{'case', Generated, TLeft, [
-        {clause, Generated,
-          [{map, Ann, [{map_field_exact, Ann, TRight, TVar}]}],
-          [],
-          [TVar]},
-        {clause, Generated,
-          [TVar],
-          [],
-          [{'case', Generated, ?remote(Generated, elixir_erl_pass, no_parens_remote, [TVar, TRight]), [
-            {clause, Generated,
-             [{tuple, Generated, [{atom, Generated, ok}, TInnerVar]}], [], [TInnerVar]},
-            {clause, Generated,
-             [{var, Generated, '_'}], [], [?remote(Ann, erlang, error, [TError])]}
-          ]}]}
-      ]}, SV};
+      {{call, Generated, {remote, Generated, {atom, Ann, erlang}, {atom, Ann, map_get}}, [TRight, TLeft]}, SL};
     false ->
-      {{'case', Generated, TLeft, [
-        {clause, Generated,
-          [{map, Ann, [{map_field_exact, Ann, TRight, TVar}]}],
-          [],
-          [?remote(Generated, elixir_erl_pass, parens_map_field, [TRight, TVar])]},
-        {clause, Generated,
-          [TVar],
-          [],
-          [{call, Generated, {remote, Generated, TVar, TRight}, []}]}
-      ]}, SV}
+      {{call, Generated, {remote, Generated, TLeft, TRight}, []}, SL}
     end;
 
 translate({{'.', _, [Left, Right]}, Meta, Args}, _Ann, S)