[Bug target/81317] builtin_vec_ld fails for powerpc with altivec

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81317

--- Comment #14 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Created attachment 41722
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41722&action=edit
second patch, for the original problem

This one should solve the original problem.