[Bug target/80697] On PowerPC, the spec 2006 benchmark milc had a 5.6% regression under GCC 7.1 compared to GCC 6.3.

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80697

--- Comment #10 from Michael Meissner <meissner at gcc dot gnu.org> ---
I believe this was ultimately due to reassociation, so Aaron probably should
chime in if it is believed to be fixed.