[Bug rtl-optimization/63620] RELOAD lost SET_GOT dependency on Darwin

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63620

--- Comment #18 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #17)
> So would it work (and I realize this is a horrid hack) to have a way for the
> backend to set the pic-pseudo as live at the key points during IRA?  It'll
> be overly conservative, but it may still be better than going back to a
> fixed PIC register.  If we had the conservative live information during IRA,
> presumably it would flow through to LRA and avoid this problem?

I believe it will disable the optimization completely too.  It is up to Intel
guys to decide how to disable the optimization *temporarily* with minimal
efforts most probably only for 2 weeks.