https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63620
--- Comment #9 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Stupachenko Evgeny from comment #8) > (In reply to Uroš Bizjak from comment #7) > > The difference si that the call to f128_p3 does not expand with "use (reg:SI > > bx)" tag in the Darwin case. Probably ix86_expand_call should be fixed for > > TARGET_MACHO > > Darwin generates indirect access throw generated section: .symbol_stub. > They don't use EBX in the call even without any changes (relaxing EBX usage). I guess that the mentioned "use" in the call is what keeps PIC register live accross push in the non-Darwin case.
