[Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.

[iains at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88343

--- Comment #34 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Alan Modra from comment #33)
> It looks to me like that hunk is just removing some dead code, so it doesn't
> matter whether it stays or goes.

yes, just a tidy-up, should not affect function (but maybe best to apply when
it's fresh in the mind).  I can try to talk care of it tomorrow.