Test 2+2W+mfence+pontna+UC+WC

X86_64 2+2W+mfence+pontna+UC+WC
"MFencedWW CoeNaNT PodWWNTNa Coe"
MT=x:UC y:WC
Generator=diyone7 (version 7.56+02~dev)
Prefetch=0:x=F,0:y=W,1:y=F,1:x=W
Com=Co Co
Orig=MFencedWW CoeNaNT PodWWNTNa Coe
Align=
{
1:rax=y;
}
 P0          | P1                  ;
 movl $2,(x) | movl $2,%ebx        ;
 mfence      | movntil %ebx,(%rax) ;
 movl $1,(y) | movl $1,(x)         ;
exists (x=2 /\ y=2)