[Bug c/113134] gcc does not version loops with early break conditions that don't have side-effects

[tnfchris at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113134

--- Comment #7 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
You may be able to use the same approach as

  else if (LOOP_VINFO_FULLY_MASKED_P (loop_vinfo))

that is, reverse both the mask and the vector and using extract last.
It's not going to be performance critical so it's more important to be correct
rather than fast.