https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63596
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Jiong Wang from comment #2) > we are also lack of initialization for va_list_gpr_counter_field and > va_list_vpr_counter_field, thus currently the whole tree-stdarg optimization > doesn't work for AArch64, and lots of other targets, like arm, sparc, mips > etc are lack of this vaarg opt tuning also. Yes but the two other server targets (x86 and PowerPC) don't lack this optimization.
