about 50% of SVOP run-time init consists of svop_list[%d].op_sv = (SV*)PL_defgv;
converting PL_defgv to be static with a protected (IMMORTAL) refcount would decrease run-time init a lot.
need to check if any init before the compiler init uses the dynamic PL_defgv pointer.
about 50% of SVOP run-time init consists of
svop_list[%d].op_sv = (SV*)PL_defgv;
converting PL_defgv to be static with a protected (IMMORTAL) refcount would decrease run-time init a lot.Idea by @toddr