Test MP+clflushoptnant+mfence+WB+WB

X86_64 MP+clflushoptnant+mfence+WB+WB
"ClFlushOptdWWNaNT RfeNTNa MFencedRR Fre"
MT=x:WB y:WB
Generator=diyone7 (version 7.56+02~dev)
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr
Orig=ClFlushOptdWWNaNT RfeNTNa MFencedRR Fre
Align=
{
0:rax=y;
}
 P0                  | P1            ;
 movl $1,(x)         | movl (y),%eax ;
 clflushopt (x)      | mfence        ;
 movl $1,%ebx        | movl (x),%ebx ;
 movntil %ebx,(%rax) |               ;
exists (1:rax=1 /\ 1:rbx=0)