http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60026
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 32030 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32030&action=edit gcc49-pr60026.patch The problem is that for -O0 we don't create vdef/vuse at all, but I'd say we shouldn't be cloning -O0 functions either, even when they don't have noclone argument. Thus perhaps something like attached patch?