[Bug target/82199] __builtin_shuffle sometimes should produce zip1 rather than TBL

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82199

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 47850
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47850&action=edit
Patch without testcases

My patch but without testcases.  I will try to add a few in a little bit.