Test IRWIW+sync+addr

Run IRWIW+sync+addr in model, using ppcmem

PPC IRWIW+sync+addr
"Rfe SyncdRW Wse Rfe DpAddrdW Wse"
Cycle=Rfe SyncdRW Wse Rfe DpAddrdW Wse
{
0:r2=x;
1:r2=x; 1:r4=y;
2:r2=y;
3:r2=y; 3:r5=x;
}
 P0           | P1           | P2           | P3            ;
 li r1,2      | lwz r1,0(r2) | li r1,2      | lwz r1,0(r2)  ;
 stw r1,0(r2) | sync         | stw r1,0(r2) | xor r3,r1,r1  ;
              | li r3,1      |              | li r4,1       ;
              | stw r3,0(r4) |              | stwx r4,r3,r5 ;
exists
(x=2 /\ y=2 /\ 1:r1=2 /\ 3:r1=2)