reduced.diff

-    {make_fun2,{f,229},0,0,1}.
-    {'%',{var_info,{x,0},[{fun_type,{t_tuple,2,true,#{}}}]}}.
+    {make_fun2,{f,257},0,0,1}.

---

-    {call,4,{f,148}}.
-    {'%',{var_info,{x,0},[{type,{t_tuple,3,false,#{2 => number}}}]}}.
-    {select_tuple_arity,{x,0},{f,146},{list,[3,{f,145},4,{f,144}]}}.
-  {label,144}.
+    {call,4,{f,172}}.
+    {test,is_tuple,{f,170},[{x,0}]}.
+    {select_tuple_arity,{x,0},{f,170},{list,[3,{f,169},4,{f,168}]}}.
+  {label,168}.


---

     {get_tuple_element,{x,1},0,{x,4}}.
-    {get_tuple_element,{x,1},2,{x,5}}.
-    {test,is_nil,{f,149},[{x,5}]}.
+    {get_tuple_element,{x,1},1,{x,5}}.
+    {get_tuple_element,{x,1},2,{x,6}}.
+    {test,is_nil,{f,173},[{x,6}]}.

---

-  {label,149}.
-    {allocate,7,6}.
+  {label,173}.
+    {allocate,7,7}.
     {init,{y,0}}.
     {init,{y,1}}.
     {move,{x,4},{y,2}}.
     {move,{x,5},{y,3}}.
-    {move,{x,2},{y,4}}.
-    {move,{x,1},{y,5}}.
+    {move,{x,6},{y,4}}.
+    {move,{x,2},{y,5}}.
     {move,{x,0},{y,6}}.
     {move,{x,3},{x,1}}.
     {move,{x,4},{x,0}}.
     {line,[{location,"couch_key_tree.erl",489}]}.
-    {call,2,{f,155}}.
-    {move,{y,4},{x,2}}.
-    {move,{x,0},{y,4}}.
+    {call,2,{f,179}}.
+    {move,{y,5},{x,2}}.
+    {move,{x,0},{y,5}}.
     {move,{y,6},{x,0}}.
     {move,{x,2},{x,1}}.
-    {make_fun2,{f,223},0,0,2}.
-    {'%',{var_info,{x,0},[{fun_type,{t_tuple,4,true,#{}}}]}}.
+    {make_fun2,{f,251},0,0,2}.
     {test_heap,5,1}.
-    {put_tuple2,{x,1},{list,[{y,4},{integer,-1},nil,nil]}}.
-    {move,{y,3},{x,2}}.
-    {kill,{y,3}}.
+    {put_tuple2,{x,1},{list,[{y,5},{integer,-1},nil,nil]}}.
+    {move,{y,4},{x,2}}.
     {kill,{y,4}}.
+    {kill,{y,5}}.
     {line,[{location,"couch_key_tree.erl",490}]}.
     {call_ext,3,{extfunc,lists,foldl,3}}.
-    {test,is_tuple,{f,153},[{x,0}]}.
-    {test,test_arity,{f,153},[{x,0},4]}.
-    {get_tuple_element,{x,0},0,{y,4}}.
-    {get_tuple_element,{x,0},1,{y,3}}.
+    {test,is_tuple,{f,177},[{x,0}]}.
+    {test,test_arity,{f,177},[{x,0},4]}.
+    {get_tuple_element,{x,0},0,{y,5}}.
+    {get_tuple_element,{x,0},1,{y,4}}.
     {get_tuple_element,{x,0},2,{y,1}}.
     {get_tuple_element,{x,0},3,{y,0}}.
-    {test,is_lt,{f,150},[{integer,0},{y,3}]}.
-    {gc_bif,length,{f,150},0,[{y,1}],{x,0}}.
-    {test,is_lt,{f,150},[{integer,0},{x,0}]}.
+    {test,is_lt,{f,174},[{integer,0},{y,4}]}.
+    {gc_bif,length,{f,174},0,[{y,1}],{x,0}}.
+    {test,is_lt,{f,174},[{integer,0},{x,0}]}.
     {move,{y,1},{x,0}}.
     {move,{y,0},{y,6}}.
     {trim,2,5}.
     {line,[{location,"couch_key_tree.erl",511}]}.
     {call_ext,1,{extfunc,lists,reverse,1}}.
     {test_heap,4,1}.
-    {get_tuple_element,{y,3},1,{x,1}}.
-    {put_tuple2,{x,0},{list,[{y,0},{x,1},{x,0}]}}.
+    {put_tuple2,{x,0},{list,[{y,0},{y,1},{x,0}]}}.
     {line,[{location,"couch_key_tree.erl",512}]}.
-    {gc_bif,'-',{f,0},1,[{y,1},{integer,1}],{x,1}}.
+    {gc_bif,'-',{f,0},1,[{y,2},{integer,1}],{x,1}}.
     {test_heap,5,2}.
-    {put_tuple2,{x,0},{list,[{y,2},{x,1},{x,0},{y,4}]}}.
+    {put_tuple2,{x,0},{list,[{y,3},{x,1},{x,0},{y,4}]}}.
     {deallocate,5}.
     return.
-  {label,150}.
-    {test,is_eq_exact,{f,151},[{y,3},{integer,0}]}.
-    {gc_bif,length,{f,151},0,[{y,1}],{x,0}}.
-    {test,is_lt,{f,151},[{integer,0},{x,0}]}.
+  {label,174}.
+    {test,is_eq_exact,{f,175},[{y,4},{integer,0}]}.
+    {gc_bif,length,{f,175},0,[{y,1}],{x,0}}.
+    {test,is_lt,{f,175},[{integer,0},{x,0}]}.
     {move,{y,6},{x,0}}.
-    {make_fun2,{f,221},0,0,1}.
-    {'%',{var_info,{x,0},[{fun_type,{t_tuple,2,true,#{1 => number}}}]}}.
+    {make_fun2,{f,249},0,0,1}.
     {move,{x,0},{y,6}}.
     {move,{y,1},{x,0}}.
-    {move,{y,0},{y,5}}.
+    {move,{y,0},{y,4}}.
     {trim,4,3}.
     {line,[{location,"couch_key_tree.erl",518}]}.
     {call_ext,1,{extfunc,lists,reverse,1}}.
@@ -2395,84 +2006,71 @@
     {trim,1,2}.
     {line,[{location,"couch_key_tree.erl",514}]}.
     {call_ext,2,{extfunc,lists,map,2}}.
-    {move,{y,0},{x,1}}.
-    {trim,1,1}.
+    {move,{y,1},{x,1}}.
+    {kill,{y,1}}.
     {line,[{location,"couch_key_tree.erl",520}]}.
     {call_ext,2,{extfunc,erlang,'++',2}}.
     {test_heap,4,1}.
     {put_tuple2,{x,0},{list,[{y,0},{integer,-1},{x,0}]}}.
-    {deallocate,1}.
+    {deallocate,2}.
     return.
-  {label,151}.
-    {test,is_lt,{f,152},[{y,3},{integer,0}]}.
-    {gc_bif,length,{f,152},0,[{y,1}],{x,0}}.
-    {test,is_eq_exact,{f,152},[{x,0},{integer,0}]}.
+  {label,175}.
+    {test,is_lt,{f,176},[{y,4},{integer,0}]}.
+    {gc_bif,length,{f,176},0,[{y,1}],{x,0}}.
+    {test,is_eq,{f,176},[{x,0},{integer,0}]}.
     {line,[{location,"couch_key_tree.erl",522}]}.
-    {gc_bif,'-',{f,0},0,[{y,3},{integer,1}],{x,0}}.
+    {gc_bif,'-',{f,0},0,[{y,4},{integer,1}],{x,0}}.
     {test_heap,4,1}.
-    {put_tuple2,{x,0},{list,[{y,4},{x,0},{y,0}]}}.
+    {put_tuple2,{x,0},{list,[{y,5},{x,0},{y,0}]}}.
     {deallocate,7}.
     return.
-  {label,152}.
+  {label,176}.
     {line,[{location,"couch_key_tree.erl",509}]}.
-    {case_end,{y,3}}.
-  {label,153}.
+    {case_end,{y,4}}.
+  {label,177}.
     {line,[{location,"couch_key_tree.erl",508}]}.
     {badmatch,{x,0}}.