https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100393
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> --- > Now, there's the possibility of doing a quick guess before doing this > loop, once via using (end - start) and once via using 2 * (end - start). > Only if the first can be handled and the second not we have to compute. Yeah, we already to that, problem with this test-case is that it's density is very close to the max growth limit (8x).