Test 2+2W+mfence+clflushoptnextntna+WB+WB

X86_64 2+2W+mfence+clflushoptnextntna+WB+WB
"MFencedWW CoeNaNT ClFlushOptNextdWWNTNa Coe"
MT=x:WB y:WB
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 ClFlushOptNextdWWNTNa Coe
Align=
{
1:rax=y; 1:rcx=x;
}
 P0          | P1                  ;
 movl $2,(x) | movl $2,%ebx        ;
 mfence      | movntil %ebx,(%rax) ;
 movl $1,(y) | clflushopt (%rcx)   ;
             | movl $1,(x)         ;
exists ([x]=2 /\ [y]=2)