https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115912
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- >From https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115877#c2 : "Based on what I'm seeing, we may have a problem with vectors as well -- worth keeping mind if there's additional bug reports against ext-dce." This might be the vector part of that issue ...