[Bug tree-optimization/80345] [5 Regression] ICE in rewrite_use_nonlinear_expr with -O2

[krisk0.2017.02.27 at protonmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80345

--- Comment #8 from Денис Крыськов <krisk0.2017.02.27 at protonmail dot com> ---
(In reply to Markus Trippelsdorf from comment #4)
> 6.3 branch works fine.
> Only 5.4.1 is affected. So it looks like a missing backport.

Microarch is Haswell.

I failed to reproduce ICE with gcc 6.3. If this is due to my mistake, I am
sorry. I attached gcc 5.4 stderr/stdout.