https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81959
Michael Meissner <meissner at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2017-08-24 Ever confirmed|0 |1 --- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> --- Using -mno-update or -mcpu=power8 'fixes' the bug. It is probably related to the optimizations for PR 79038 that were added on March 15th.