Test ISA2+sync+addr+wsi+addr

PPC ISA2+sync+addr+wsi+addr
"SyncdWW Rfe DpAddrdW Wsi Rfe DpAddrdR Fre"
Prefetch=2:x=T
Com=Rf Rf Fr
Orig=SyncdWW Rfe DpAddrdW Wsi Rfe DpAddrdR Fre
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r5=z;
2:r2=z; 2:r5=x;
}
 P0           | P1            | P2            ;
 li r1,1      | lwz r1,0(r2)  | lwz r1,0(r2)  ;
 stw r1,0(r2) | xor r3,r1,r1  | xor r3,r1,r1  ;
 sync         | li r4,1       | lwzx r4,r3,r5 ;
 li r3,1      | stwx r4,r3,r5 |               ;
 stw r3,0(r4) | li r6,2       |               ;
              | stw r6,0(r5)  |               ;
exists
(z=2 /\ 1:r1=1 /\ 2:r1=2 /\ 2:r4=0)