[Bug tree-optimization/92834] misssed SLP vectorization in LightPixel

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92834

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 47437
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47437&action=edit
gcc10-pr92834.patch

This untested patch just undoes the fancy way of writing blend operation and
turns it into ?: that we are able to optimize better.