Test ISA2+sync+addr+wsi+ctrlisync

PPC ISA2+sync+addr+wsi+ctrlisync
"SyncdWW Rfe DpAddrdW Wsi Rfe DpCtrlIsyncdR Fre"
Prefetch=2:x=T
Com=Rf Rf Fr
Orig=SyncdWW Rfe DpAddrdW Wsi Rfe DpCtrlIsyncdR Fre
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r5=z;
2:r2=z; 2:r4=x;
}
 P0           | P1            | P2           ;
 li r1,1      | lwz r1,0(r2)  | lwz r1,0(r2) ;
 stw r1,0(r2) | xor r3,r1,r1  | cmpw r1,r1   ;
 sync         | li r4,1       | beq  LC00    ;
 li r3,1      | stwx r4,r3,r5 | LC00:        ;
 stw r3,0(r4) | li r6,2       | isync        ;
              | stw r6,0(r5)  | lwz r3,0(r4) ;
exists
(z=2 /\ 1:r1=1 /\ 2:r1=2 /\ 2:r3=0)