[Bug target/88547] missed optimization for vector comparisons

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88547

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45274
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45274&action=edit
gcc9-pr88547.patch

Untested patch for the rest.  Richard, is that what you had in mind?