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compile.c: remove unreferred label

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* compile.c (remove_unreachable_chunk): remove unreferred label
  to optimize away unreachable chunk.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53402 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2016-01-01 03:05:55 +00:00
parent f18f940802
commit 0094737575
2 changed files with 8 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Fri Jan 1 12:05:53 2016 Nobuyoshi Nakada <nobu@ruby-lang.org>
* compile.c (remove_unreachable_chunk): remove unreferred label
to optimize away unreachable chunk.
Fri Jan 1 11:42:57 2016 James Edward Gray II <james@graysoftinc.com>
* lib/csv.rb (CSV): Add a liberal_parsing option.

3
compile.c
View file

@ -1968,6 +1968,9 @@ remove_unreachable_chunk(LINK_ELEMENT *i)
break;
}
}
else if (i->type == ISEQ_ELEMENT_LABEL) {
if (((LABEL *)i)->refcnt > 0) break;
}
else break;
REMOVE_ELEM(i);
removed = 1;