aboutsummaryrefslogtreecommitdiffstats
path: root/lib/compiler/src/beam_flatten.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/compiler/src/beam_flatten.erl')
-rw-r--r--lib/compiler/src/beam_flatten.erl6
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/compiler/src/beam_flatten.erl b/lib/compiler/src/beam_flatten.erl
index a4d45a4ca6..4045ab6dc5 100644
--- a/lib/compiler/src/beam_flatten.erl
+++ b/lib/compiler/src/beam_flatten.erl
@@ -50,6 +50,9 @@ norm_block([{set,[],[],{alloc,R,Alloc}}|Is], Acc0) ->
Acc ->
norm_block(Is, Acc)
end;
+norm_block([{set,[D1],[S],get_hd},{set,[D2],[S],get_tl}|Is], Acc) ->
+ I = {get_list,S,D1,D2},
+ norm_block(Is, [I|Acc]);
norm_block([I|Is], Acc) -> norm_block(Is, [norm(I)|Acc]);
norm_block([], Acc) -> Acc.
@@ -64,7 +67,8 @@ norm({set,[D],[],{put_tuple,A}}) -> {put_tuple,A,D};
norm({set,[],[S],put}) -> {put,S};
norm({set,[D],[S],{get_tuple_element,I}}) -> {get_tuple_element,S,I,D};
norm({set,[],[S,D],{set_tuple_element,I}}) -> {set_tuple_element,S,D,I};
-norm({set,[D1,D2],[S],get_list}) -> {get_list,S,D1,D2};
+norm({set,[D],[S],get_hd}) -> {get_hd,S,D};
+norm({set,[D],[S],get_tl}) -> {get_tl,S,D};
norm({set,[D],[S|Puts],{alloc,R,{put_map,Op,F}}}) ->
{put_map,F,Op,S,D,R,{list,Puts}};
norm({set,[],[],remove_message}) -> remove_message;