https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68963
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Honza, can you please have a look at this? This looks like pretty important bug to me. We record_estimate of 2 (+1) from both of the a[] accesses, one is using the 1 * BIV as index and another is using 1 * BIV - y, both of these statements can be executed at most 3 times, sure. But, as they are in conditional code, where one is executed in 0th to (y-1)th iteration and the other in yth to (2*y-1)th, we should conclude from this that the loop has at most 6 iterations, not at most 3 iterations.
