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authorBjörn Gustavsson <bjorn@erlang.org>2010-09-29 12:16:56 +0200
committerBjörn Gustavsson <bjorn@erlang.org>2011-01-17 15:23:38 +0100
commitec325cc785916c6a4991fe2e03747a97b7e1ae75 (patch)
treef6edcc29d40637dfa270b6bf5b4e7c97fc0ce1cc /erts/emulator/utils
parent7738e604909c52ebac606eed5f6314291747e938 (diff)
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BEAM loader: Combine is_type/1 and is_eq/1 instructions
In the transformation engine in the loader, an is_eq/1 instruction is currently always preceded by an is_type/1 instruction. Therefore, save a word and slight amount of time by combining those instructions into an is_type_eq/2 instruction.
Diffstat (limited to 'erts/emulator/utils')
-rwxr-xr-xerts/emulator/utils/beam_makeops8
1 files changed, 7 insertions, 1 deletions
diff --git a/erts/emulator/utils/beam_makeops b/erts/emulator/utils/beam_makeops
index 8a5b8047eb..cb91517f04 100755
--- a/erts/emulator/utils/beam_makeops
+++ b/erts/emulator/utils/beam_makeops
@@ -1315,7 +1315,13 @@ sub tr_gen_from {
$types .= "$_ ";
$type_mask |= $type_bit{$_};
}
- push(@code, &make_op($types, 'is_type', $type_mask));
+ if ($cond ne 'is_eq') {
+ push(@code, &make_op($types, 'is_type', $type_mask));
+ } else {
+ $cond = '';
+ push(@code, &make_op($types, 'is_type_eq',
+ $type_mask, $val));
+ }
}
}