https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88844
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2019-01-15 Ever confirmed|0 |1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- The issue is that niter analysis cannot compute the number of iterations. It's sth like floor_log2(i)/4 when header copied.