https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80574
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |8.0 --- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> --- The original testcase in comment #0 is fixed in GCC 8, I don't know what caused the improvement though.