Test WWC+addr+lwsync

PPC WWC+addr+lwsync
"Rfe DpAddrdW Rfe LwSyncdRW Wse"
Cycle=Rfe LwSyncdRW Wse Rfe DpAddrdW
{
0:r2=x;
1:r2=x; 1:r5=y;
2:r2=y; 2:r4=x;
}
 P0           | P1            | P2           ;
 li r1,2      | lwz r1,0(r2)  | lwz r1,0(r2) ;
 stw r1,0(r2) | xor r3,r1,r1  | lwsync       ;
              | li r4,1       | li r3,1      ;
              | stwx r4,r3,r5 | stw r3,0(r4) ;
exists
(x=2 /\ 1:r1=2 /\ 2:r1=1)