https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113495
--- Comment #30 from JuzheZhong <juzhe.zhong at rivai dot ai> --- Ok. I believe m_avl_def_in && m_avl_def_out can be removed with a better algorthm. Then the memory-hog should be fixed soon. I am gonna rewrite avl_vl_unmodified_between_p and trigger full coverage testingl Since it's going to be a big change there.