https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69526
--- Comment #7 from rdapp at linux dot vnet.ibm.com --- (In reply to amker from comment #6) > It comes from loop niter analysis, as in may_eliminate_iv, we have: > > (gdb) call debug_generic_expr(desc->niter) > n_5(D) + 4294967295 and this is correct? I.e. the number of iterations is n - 1? I'd naively expect desc->niter = n_5(D) (Again, it might be necessary for some reason escapes me currently)