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authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-04-29 03:48:26 +0000
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-04-29 03:48:26 +0000
commit810522e0ff0d0ccf891eebe75e1765baeef324de (patch)
treea125791dc177295dee89443903db6c1fa192b7ef /compile.c
parent69ba9302c5cc6a0edc2cd6e38ee233ac3b5df2d3 (diff)
compile.c: move expansion of massign
* compile.c (iseq_compile_each): move expansion for massign to variable of for-loop from the parser, to reduce method calls on intermediate objects. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50398 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'compile.c')
-rw-r--r--compile.c30
1 files changed, 28 insertions, 2 deletions
diff --git a/compile.c b/compile.c
index 39d10f8..9427ade 100644
--- a/compile.c
+++ b/compile.c
@@ -3624,8 +3624,34 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
iseq->compile_data->ensure_node_stack = iseq->compile_data->ensure_node_stack->prev;
break;
}
- case NODE_ITER:
- case NODE_FOR:{
+ case NODE_FOR:
+ if (node->nd_var) {
+ /* massign to var in "for"
+ * args.length == 1 && Array === (tmp = args[0]) ? tmp : args
+ */
+ NODE *var = node->nd_var;
+ LABEL *not_single = NEW_LABEL(nd_line(var));
+ LABEL *not_ary = NEW_LABEL(nd_line(var));
+ COMPILE(ret, "for var", var);
+ ADD_INSN(ret, line, dup);
+ ADD_CALL(ret, line, idLength, INT2FIX(0));
+ ADD_INSN1(ret, line, putobject, INT2FIX(1));
+ ADD_CALL(ret, line, idEq, INT2FIX(1));
+ ADD_INSNL(ret, line, branchunless, not_single);
+ ADD_INSN(ret, line, dup);
+ ADD_INSN1(ret, line, putobject, INT2FIX(0));
+ ADD_CALL(ret, line, idAREF, INT2FIX(1));
+ ADD_INSN1(ret, line, putobject, rb_cArray);
+ ADD_INSN1(ret, line, topn, INT2FIX(1));
+ ADD_CALL(ret, line, idEqq, INT2FIX(1));
+ ADD_INSNL(ret, line, branchunless, not_ary);
+ ADD_INSN(ret, line, swap);
+ ADD_LABEL(ret, not_ary);
+ ADD_INSN(ret, line, pop);
+ ADD_LABEL(ret, not_single);
+ break;
+ }
+ case NODE_ITER:{
VALUE prevblock = iseq->compile_data->current_block;
LABEL *retry_label = NEW_LABEL(line);
LABEL *retry_end_l = NEW_LABEL(line);