https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80158
--- Comment #5 from Bill Schmidt <wschmidt at gcc dot gnu.org> --- OK, I will have to find an x86 box -- fortran cross is too challenging. Meanwhile, could you please add -fdump-tree-reassoc2 and -fdump-tree-slsr-details and post the results? Might be able to figure it out from that.