gc.c: promote long-lived NODE_CREF objects to oldgen
include/ruby/ruby.h: add RGENGC_WB_PROTECTED_NODE_CREF setting
In a large app, this reduces the size of
remembered_shady_object_count by 80%. [Bug #9225] [ruby-core:58947]
gc.c (rb_node_newnode): add FL_WB_PROTECTED flag to NODE_CREF
class.c (rewrite_cref_stack): insert OBJ_WRITE for NODE_CREF
gc.c: promote long-lived NODE_CREF objects to oldgen
In a large app, this reduces the size of
remembered_shady_object_count by 80%. [Bug #9225] [ruby-core:58947]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44059 b2dd03c8-39d4-4d8f-98ff-823fe69b080e