Test S+clflushoptnant+mfence+WB+WT

X86_64 S+clflushoptnant+mfence+WB+WT
"ClFlushOptdWWNaNT RfeNTNa MFencedRW Coe"
MT=x:WB y:WT
Generator=diyone7 (version 7.56+02~dev)
Prefetch=0:x=F,0:y=W,1:y=F,1:x=W
Com=Rf Co
Orig=ClFlushOptdWWNaNT RfeNTNa MFencedRW Coe
Align=
{
0:rax=y;
}
 P0                  | P1            ;
 movl $2,(x)         | movl (y),%eax ;
 clflushopt (x)      | mfence        ;
 movl $1,%ebx        | movl $1,(x)   ;
 movntil %ebx,(%rax) |               ;
exists (1:rax=1 /\ [x]=2)