[Bug target/57744] Power8 support has problems with quad word atomic instructions

[meissner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57744

--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 30403
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30403&action=edit
Program to show the bug

Compile with -O3 -mcpu=power8 -c -save-temps to make sure the assembler tries
to assemble the file.