Test MP+mfence+po+WT+WT

X86_64 MP+mfence+po+WT+WT
"MFencedWW Rfe PodRR Fre"
MT=x:WT y:WT
Cycle=Rfe PodRR Fre MFencedWW
Relax=MFencedWW
Safe=Rfe Fre PodRR
Generator=diy7 (version 7.56+02~dev)
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr
Orig=MFencedWW Rfe PodRR Fre
Align=
{
}
 P0          | P1            ;
 movl $1,(x) | movl (y),%eax ;
 mfence      | movl (x),%ebx ;
 movl $1,(y) |               ;
exists (1:rax=1 /\ 1:rbx=0)