[Bug tree-optimization/52298] ICE: verify_ssa failed: definition in block follows use

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52298

--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-02-20 14:14:48 UTC ---
Not sure why in vect_model_reduction_cost we do not consider the reduction
at all if nested_in_vect_loop_p (loop, orig_stmt).  I think simply dropping
that conditional would model the cost more appropriately (though the question
is how outer loop vectorization uses the costs).