https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63956
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- If it would be just because of these 3-4 builtins/internal calls, then it is not worth it IMHO, making a copy would increase compiler memory footprint. Already from the earlier phases there are some ubsan builtins in there anyway (shift instrumentation e.g.).
