https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103262
--- Comment #5 from seurer at gcc dot gnu.org --- re: "only on power 10". Not quite true. I tried running it a bunch of times on power 8, 9, and 10. r12-5244 fails consistently on power 9 and power 10 but not on power 8 (nor 7 from previous testing).