[Bug target/64204] gcc.dg/c11-atomic-2.c fails on powerpc 64-bit little endian after -mupper-regs patches went in

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64204

--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 34206
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34206&action=edit
Proposed patch to fix the problem