iseq: reduce array allocations for simple sequences

* compile.c (iseq_add_mark_object): Use new rb_iseq_add_mark_object().

* insns.def (setinlinecache): Ditto.

* iseq.c (rb_iseq_add_mark_object): New function to allocate
  iseq->mark_ary on demand. [Bug #8142]

* iseq.h (rb_iseq_add_mark_object): Ditto.

* iseq.c (prepare_iseq_build): Avoid allocating mark_ary until needed.

* iseq.c (rb_iseq_build_for_ruby2cext): Ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40336 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/iseq.h b/iseq.h
index c7069ab9c4..19868d8b91 100644
--- a/iseq.h
+++ b/iseq.h
@@ -21,6 +21,7 @@ VALUE rb_iseq_build_from_ary(rb_iseq_t *iseq, VALUE locals, VALUE args,
 			     VALUE exception, VALUE body);
 
 /* iseq.c */
+void rb_iseq_add_mark_object(rb_iseq_t *iseq, VALUE obj);
 VALUE rb_iseq_load(VALUE data, VALUE parent, VALUE opt);
 VALUE rb_iseq_parameters(const rb_iseq_t *iseq, int is_proc);
 struct st_table *ruby_insn_make_insn_table(void);