https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100866
--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> --- This PR is specifically about the vec_revb builtin. But yes, we should look at what is generated for all other code (having only the builtin generate good code is suboptimal for a generic thing like this), and for other sizes as well.
