[Bug rtl-optimization/101523] Huge number of combine attempts

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101523

--- Comment #27 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #25)
> So this testcase compiles on powerpc64-linux (-O2) in about 34s.  Is s390x
> way worse, or is this in lie what you are seeing?

I should note that in the powerpc backend, address_cost is always 0 so I
suspect it won't run into this issue where fwprop rejects the transformation
but combine accepts it.