Test S+mfence+ponant+WB+UC

X86_64 S+mfence+ponant+WB+UC
"MFencedWW Rfe PodRWNaNT CoeNTNa"
MT=x:WB y:UC
Generator=diyone7 (version 7.56+02~dev)
Prefetch=0:x=F,0:y=W,1:y=F,1:x=W
Com=Rf Co
Orig=MFencedWW Rfe PodRWNaNT CoeNTNa
Align=
{
1:rbx=x;
}
 P0          | P1                  ;
 movl $2,(x) | movl (y),%eax       ;
 mfence      | movl $1,%ecx        ;
 movl $1,(y) | movntil %ecx,(%rbx) ;
exists (x=2 /\ 1:rax=1)