GCC segfault while compiling SPEC 2017 fprate tests

[Arseny Solokha]

> I was doing some benchmarking with SPEC 2017 fprate on aarch64
> (Thunderx2) and I am getting some segfaults from GCC while compiling.
>
> I am working with delta to try and cut down one of the test cases
> but I was wondering if anyone else has seen this problem.  The
> three tests that segfault while compiling are 510.parest_r, 511.povray_r,
> and 521.wrf_r.

This is probably PR87889, already fixed on trunk.