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

[randy.macleod at windriver dot com]

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

--- Comment #6 from Randy MacLeod <randy.macleod at windriver dot com> ---
Created attachment 41682
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41682&action=edit
smaller reproducer with manual work-around

The work-around clearly isn't a viable one. 
I believe that builtin_vec_ld(a,b) can take 'a' as a variable but perhaps not.