https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106249
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- Maybe just make frontend / user inserted __builtin_unreachable ()s trap but not middle-end inserted ones which are generally only to aid DCE? Thus, rewrite them at gimplification time instead of hacking the delcs to be the same?
