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authorBjörn Gustavsson <[email protected]>2010-11-11 08:23:55 +0100
committerBjörn Gustavsson <[email protected]>2011-01-17 15:23:42 +0100
commit824a481d5f38c748cd6efcb83cba0b8d26b88768 (patch)
treeb516c2028042df57c05bb66faf7d6b3202950bb7 /erts/emulator/beam/ops.tab
parente4a4632ed173f22642a2b67316b6decbc91b2a5b (diff)
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Optimize creation of tuples
Combine the put_tuple/2 and all following put/1 instructions to one i_put_tuple/2 instruction. In general, that will reduce the number of instruction words by 50 percent. Measurements seem to indicate that the speed is about the same.
Diffstat (limited to 'erts/emulator/beam/ops.tab')
-rw-r--r--erts/emulator/beam/ops.tab39
1 files changed, 14 insertions, 25 deletions
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab
index 4546f056a9..f629cc80b6 100644
--- a/erts/emulator/beam/ops.tab
+++ b/erts/emulator/beam/ops.tab
@@ -345,25 +345,21 @@ i_is_eq_immed f y c
# Putting things.
#
-put_tuple Arity Dst | put V => i_put_tuple Arity V Dst
-
-%macro: i_put_tuple PutTuple -pack
-i_put_tuple A x x
-i_put_tuple A y x
-i_put_tuple A r x
-i_put_tuple A n x
-i_put_tuple A c x
-i_put_tuple A x y
-i_put_tuple A x r
-i_put_tuple A y r
-i_put_tuple A n r
-i_put_tuple A c r
+put_tuple Arity Dst => i_put_tuple Dst u
-%cold
-i_put_tuple A r y
-i_put_tuple A y y
-i_put_tuple A c y
-%hot
+i_put_tuple Dst Arity Puts=* | put S1 | put S2 | \
+ put S3 | put S4 | put S5 => \
+ tuple_append_put5(Arity, Dst, Puts, S1, S2, S3, S4, S5)
+
+i_put_tuple Dst Arity Puts=* | put S => \
+ tuple_append_put(Arity, Dst, Puts, S)
+
+i_put_tuple/2
+
+%macro:i_put_tuple PutTuple -pack -goto:do_put_tuple
+i_put_tuple r I
+i_put_tuple x I
+i_put_tuple y I
%macro:put_list PutList -pack -gen_dest
@@ -416,13 +412,6 @@ put_list x r r
put_list s s d
%hot
-%macro: put Put
-put x
-put r
-put y
-put c
-put n
-
%macro: i_fetch FetchArgs -pack
i_fetch c c
i_fetch c r