Test safe566

PPC safe566
"Rfe SyncdRW Rfe SyncdRW Rfe SyncdRW Rfe SyncdRW"
Cycle=Rfe SyncdRW Rfe SyncdRW Rfe SyncdRW Rfe SyncdRW
Relax=
Safe=ACSyncdRW
{
0:r2=a; 0:r4=x;
1:r2=x; 1:r4=y;
2:r2=y; 2:r4=z;
3:r2=z; 3:r4=a;
}
 P0           | P1           | P2           | P3           ;
 lwz r1,0(r2) | lwz r1,0(r2) | lwz r1,0(r2) | lwz r1,0(r2) ;
 sync         | sync         | sync         | sync         ;
 li r3,1      | li r3,1      | li r3,1      | li r3,1      ;
 stw r3,0(r4) | stw r3,0(r4) | stw r3,0(r4) | stw r3,0(r4) ;
exists
(0:r1=1 /\ 1:r1=1 /\ 2:r1=1 /\ 3:r1=1)