Test WRW+2W+po+poana+WC+WB

X86_64 WRW+2W+po+poana+WC+WB
"Rfe PodRW CoeNaA PodWWANa Coe"
MT=x:WC y:WB
Generator=diyone7 (version 7.56+02~dev)
Prefetch=1:x=F,1:y=W,2:y=F,2:x=W
Com=Rf Co Co
Orig=Rfe PodRW CoeNaA PodWWANa Coe
Align=
{
}
 P0          | P1            | P2             ;
 movl $2,(x) | movl (x),%eax | movl $2,%eax   ;
             | movl $1,(y)   | xchgl (y),%eax ;
             |               | movl $1,(x)    ;
exists (x=2 /\ y=2 /\ 1:rax=2 /\ 2:rax=1)