https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63566
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Even with all the committed patches I don't see any change on the #c5 testcase, which in 4.9 used regparm(3) calling convention e.g. for f1 and f2, but with current trunk still uses regparm(0).
