[Bug target/120870] [16/17 regression] CPython miscompiled with preserve_none and CFLAGS="-O2 -march=znver2 -ggdb3"

[hjl.tools at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120870

--- Comment #35 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #34)
> (In reply to H.J. Lu from comment #33)
> > RBP isn't restored for -march=znver2 with preserve_none:
> It's here:
> $ grep leave pr120870.s
>         leave

Yes, gcc does look OK.  I am not sure if __builtin_frame_address usages in
CPython 3.14.4 are 100% correct.