From 5bf73db9fd77bce195b7e78a8754730263068fb1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Mon, 21 Aug 2017 18:03:04 +0200 Subject: Add the 'S' type for a register source The type 'd' could be used both for destination registers and source register. Restrict the 'd' type to only be used for destinations, and introduce the new 'S' type to be used when a source must be a register. --- erts/emulator/utils/beam_makeops | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'erts/emulator/utils') diff --git a/erts/emulator/utils/beam_makeops b/erts/emulator/utils/beam_makeops index fcbd3de4c1..ee8b12681f 100755 --- a/erts/emulator/utils/beam_makeops +++ b/erts/emulator/utils/beam_makeops @@ -139,6 +139,7 @@ my %arg_size = ('r' => 0, # x(0) - x register zero 'n' => 0, # NIL (implicit) 'c' => 1, # tagged constant (integer, atom, nil) 's' => 1, # tagged source; any of the above + 'S' => 1, # tagged source register (x or y) 'd' => 1, # tagged destination register (r, x, y) 'f' => 1, # failure label 'j' => 1, # either 'f' or 'p' @@ -188,6 +189,7 @@ sub define_type_bit { define_type_bit('s', $type_bit{'d'} | $type_bit{'i'} | $type_bit{'a'} | $type_bit{'n'} | $type_bit{'q'}); + define_type_bit('S', $type_bit{'d'}); define_type_bit('j', $type_bit{'f'} | $type_bit{'p'}); # Aliases (for matching purposes). @@ -1258,7 +1260,7 @@ sub basic_generator { push(@f, "r(0)"); last SWITCH; }; - /[lxy]/ and do { + /[lxyS]/ and do { push(@f, $_ . "b(Arg($arg_offset))"); last SWITCH; }; @@ -1462,6 +1464,7 @@ sub do_pack { 'y' => 10, 'Q' => 10, 'l' => 10, + 'S' => 16, 'd' => 16, 't' => 16); if ($wordsize == 64) { -- cgit v1.2.3