[Bug tree-optimization/83580] [6/7 Regression] Wrong code caused by vectorization

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83580

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Backport FAILs gcc.dg/vect/bb-slp-25.c.