[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917

--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I certainly can reproduce it, the problem is that reduc_def_stmt is NULL.
dt is vect_constant_def.