https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82229
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |lto, missed-optimization
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2017-09-18
Ever confirmed|0 |1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
I suspect changes in cross-module inlining causing the issue. Without some
analysis from your side it's really hard to do anything about this. A good
start is to do some profiling.