[Bug debug/84252] [8 Regression] ICE in get_tracked_reg_offset when building libvpx for aarch64

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84252

--- Comment #6 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 
---
(In reply to Jakub Jelinek from comment #5)
> Created attachment 43358 [details]
> gcc8-pr84252.patch
> 
> Full untested fix.

Thanks.  Bootstrapped & regression-tested on aarch64-linux-gnu, no new
failures.