https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111972
--- Comment #7 from Hongtao.liu <crazylht at gmail dot com> --- (In reply to Andrew Pinski from comment #3) > First off does this even make sense to vectorize but rather do some kind of > scalar reduction with respect to j = j^1 here . Filed PR 112104 for that. > > Basically vectorizing this loop is a waste compared to that. Yes, it's always zero, it would be nice if the middle end can optimize the whole loop off. So for this PR, it's more related to the misoptimization of the redundant loop(better finalize the induction variable with a simple assignment), not vectorization.
