Test ISA2+sync+sync+addr-po-rfi

PPC ISA2+sync+sync+addr-po-rfi
"SyncdWW Rfe SyncdRW Rfe DpAddrdR PodRW Rfi Fre"
Prefetch=2:x=T
Com=Rf Rf Fr
Orig=SyncdWW Rfe SyncdRW Rfe DpAddrdR PodRW Rfi Fre
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r4=z;
2:r2=z; 2:r5=a; 2:r7=x;
}
 P0           | P1           | P2            ;
 li r1,2      | lwz r1,0(r2) | lwz r1,0(r2)  ;
 stw r1,0(r2) | sync         | xor r3,r1,r1  ;
 sync         | li r3,1      | lwzx r4,r3,r5 ;
 li r3,1      | stw r3,0(r4) | li r6,1       ;
 stw r3,0(r4) |              | stw r6,0(r7)  ;
              |              | lwz r8,0(r7)  ;
exists
(x=2 /\ 1:r1=1 /\ 2:r1=1 /\ 2:r8=1)