[Bug tree-optimization/40073] Vector short/char shifts generate sub-optimal code

[amylaar at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40073

--- Comment #14 from Jorn Wolfgang Rennecke <amylaar at gcc dot gnu.org> ---
(In reply to Jorn Wolfgang Rennecke from comment #12)
> If we are right shifting a signed type, we could apply a MAX operation to the
> shift count.

Oops, I mean MIN of course.  So that we can guarantee that the maximum
applied shift count is one less than the bitsize of the shifted value.