[Bug target/71677] PowerPC ISA 3.0 DImode load/store needs a fix

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71677

--- Comment #2 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 38795
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38795&action=edit
Proposed patch to fix the problem