[Bug target/81594] Optimize PowerPC vector set and store

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81594

--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 41854
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41854&action=edit
Proposed patch to fix the problem