[Bug lto/84213] [8 Regression] 521.wrf_r from SPEC 2017 fails to build (link) with LTO

[derodat at adacore dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84213

--- Comment #14 from Pierre-Marie de Rodat <derodat at adacore dot com> ---
(In reply to Pierre-Marie de Rodat from comment #13)
> IIRC, DECL_VALUE_EXPR is something like MEM_REF (-1). Yes, I’ll give it a
> try…

I submitted a candidate patch:
https://gcc.gnu.org/ml/gcc-patches/2018-02/msg00513.html