[Bug rtl-optimization/58066] __tls_get_addr is called with misaligned stack on x86-64

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066

--- Comment #13 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 35964
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35964&action=edit
Combined middle/end/target patch

Patch in testing.