aboutsummaryrefslogtreecommitdiffstats
path: root/erts/emulator/beam/ops.tab
diff options
context:
space:
mode:
Diffstat (limited to 'erts/emulator/beam/ops.tab')
-rw-r--r--erts/emulator/beam/ops.tab11
1 files changed, 7 insertions, 4 deletions
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab
index d6feef3fb9..802c6fd1eb 100644
--- a/erts/emulator/beam/ops.tab
+++ b/erts/emulator/beam/ops.tab
@@ -60,12 +60,18 @@ func_info M=a a==am_module_info A=u==0 | label L | move n r => too_old_compiler
func_info M=a a==am_module_info A=u==1 | label L | move n r => too_old_compiler
# The undocumented and unsupported guard BIF is_constant/1 was removed
-# in R13. The is_constant/2 operation is marked as obosolete in genop.tab,
+# in R13. The is_constant/2 operation is marked as obsolete in genop.tab,
# so the loader will automatically generate a too_old_compiler message
# it is used, but we need to handle the is_constant/1 BIF specially here.
bif1 Fail u$func:erlang:is_constant/1 Src Dst => too_old_compiler
+# Since the constant pool was introduced in R12B, empty tuples ({})
+# are literals. Therefore we no longer need to allow put_tuple/2
+# with a tuple size of zero.
+
+put_tuple u==0 d => too_old_compiler
+
#
# All the other instructions.
#
@@ -328,11 +334,8 @@ i_is_eq_immed f y c
# Putting things.
#
-put_tuple u==0 Dst => i_put_tuple_only u Dst
put_tuple Arity Dst | put V => i_put_tuple Arity V Dst
-i_put_tuple_only A d
-
%macro: i_put_tuple PutTuple -pack
i_put_tuple A x x
i_put_tuple A y x