[Bug target/120908] *tls_global_dynamic_64_ has an implicit RDI clobber

[ubizjak at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120908

--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
I think the patch should be committed to all release branches (after some soak
time in the mainline to avoid surprises).