[Bug target/66697] Feature request: -mstackrealign and force_align_arg_pointer for x86_64

[bucaneer at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66697

--- Comment #4 from Justas L <bucaneer at gmail dot com> ---
I haven't tested this yet, but I understand this global solution would affect
the performance of ALL functions, not only those that interface with outside
code, correct?

Wine already assigns the force_align_arg_pointer attribute to vulnerable
functions, so making it work for x86_64 would be the better, less disruptive
solution.