https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88343
--- Comment #24 from Iain Sandoe <iains at gcc dot gnu.org> --- so, it seems that there are more cases where the RS6000_PIC_OFFSET_TABLE_REGNUM is used without setting the uses_pic_offset_table. We can easily back the change out to "fix" master - but that seems to be papering over the underlying issue?