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* parse.y: optimize 'for' statement when one variable given.

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* benchmark/bm_loop_for.rb: added.
* benchmark/bm_loop_times.rb: modified.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19753 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
ko1 2008-10-10 19:19:36 +00:00
parent 254937c873
commit 3f710785f0
4 changed files with 29 additions and 7 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
Sat Oct 11 03:54:05 2008 Koichi Sasada <ko1@atdot.net>
* parse.y: optimize 'for' statement when one variable given.
* benchmark/bm_loop_for.rb: added.
* benchmark/bm_loop_times.rb: modified.
Sat Oct 11 12:09:05 2008 James Edward Gray II <jeg2@ruby-lang.org>
* lib/csv/csv.rb: Added support for Encoding::default_internal.

3
benchmark/bm_loop_for.rb Normal file
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@ -0,0 +1,3 @@
for i in 1..30_000_000
#
end

2
benchmark/bm_loop_times.rb
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@ -1 +1 @@
30000000.times{|e|}
30_000_000.times{|e|}

23
parse.y
View file

@ -2772,16 +2772,27 @@ primary : literal
NEW_CALL(NEW_CALL(NEW_DVAR(id), rb_intern("[]"), zero),
rb_intern("kind_of?"), NEW_LIST(NEW_LIT(rb_cArray))),
0),
NEW_DASGN_CURR(id,
NEW_CALL(NEW_DVAR(id), rb_intern("[]"), zero)),
0),
NEW_DASGN_CURR(id,
NEW_CALL(NEW_DVAR(id), rb_intern("[]"), zero)),
0),
node_assign($2, NEW_DVAR(id)));
args = new_args(m, 0, id, 0, 0);
}
else {
m->nd_next = node_assign(NEW_MASGN(NEW_LIST($2), 0), NEW_DVAR(id));
if (nd_type($2) == NODE_LASGN ||
nd_type($2) == NODE_DASGN ||
nd_type($2) == NODE_DASGN_CURR) {
$2->nd_value = NEW_DVAR(id);
m->nd_plen = 1;
m->nd_next = $2;
args = new_args(m, 0, 0, 0, 0);
}
else {
m->nd_next = node_assign(NEW_MASGN(NEW_LIST($2), 0), NEW_DVAR(id));
args = new_args(m, 0, id, 0, 0);
}
}
args = new_args(m, 0, id, 0, 0);
scope = NEW_NODE(NODE_SCOPE, tbl, $8, args);
tbl[0] = 1; tbl[1] = id;
$$ = NEW_FOR(0, $5, scope);