Test R+pontna+mfence+WT+WC

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