From 92f1409c0e9b986780be483976de3cbbff3bab34 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Thu, 16 Dec 2010 11:15:11 +0100 Subject: Eliminate the "put_list c n Dst" instructions Since the literal (constant) pool was introduced in R12, the BEAM compiler will never generate a "put_list Const [] Dst" instruction (it will instead generate a "move [Const] Dst" instruction). --- erts/emulator/beam/ops.tab | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'erts') diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab index 0b2e2dca83..426cdef24d 100644 --- a/erts/emulator/beam/ops.tab +++ b/erts/emulator/beam/ops.tab @@ -376,16 +376,21 @@ i_put_tuple r I i_put_tuple x I i_put_tuple y I +# +# The instruction "put_list Const [] Dst" will not be generated by +# the current BEAM compiler. But until R15A, play it safe by handling +# that instruction with the following transformation. +# +put_list Const=c n Dst => move Const x | put_list x n Dst + %macro:put_list PutList -pack -gen_dest put_list x n x put_list y n x put_list x x x put_list y x x -put_list c n x put_list x x r put_list y r r -put_list c n r put_list y y x put_list x y x -- cgit v1.2.3