Test 2+2W+mfence+po+WC+WT

X86_64 2+2W+mfence+po+WC+WT
"MFencedWW Coe PodWW Coe"
MT=x:WC y:WT
Cycle=Coe PodWW Coe MFencedWW
Relax=MFencedWW
Safe=Coe PodWW
Generator=diy7 (version 7.56+02~dev)
Prefetch=0:x=F,0:y=W,1:y=F,1:x=W
Com=Co Co
Orig=MFencedWW Coe PodWW Coe
Align=
{
}
 P0          | P1          ;
 movl $2,(x) | movl $2,(y) ;
 mfence      | movl $1,(x) ;
 movl $1,(y) |             ;
exists (x=2 /\ y=2)