[Bug target/58278] visibility bug from #26905 still happens with the sparc64 backend

[martin at netbsd dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58278

--- Comment #6 from Martin Husemann <martin at netbsd dot org> ---
Ooops, my lack of x86 ABI knowledge strikes again.
Indeed, visibility is properly expressed in the prologue, all is fine.