Test safe017

PPC safe017
"Rfe SyncdRW Wse SyncdWW Rfe DpdW Wse"
Cycle=Rfe SyncdRW Wse SyncdWW Rfe DpdW Wse
Relax=
Safe=Wse DpdW ACSyncdRW BCSyncdWW
{
0:r2=z; 0:r4=x;
1:r2=x; 1:r4=y;
2:r2=y; 2:r5=z;
3:r2=z;
}
 P0           | P1           | P2            | P3           ;
 lwz r1,0(r2) | li r1,2      | lwz r1,0(r2)  | li r1,2      ;
 sync         | stw r1,0(r2) | xor r3,r1,r1  | stw r1,0(r2) ;
 li r3,1      | sync         | li r4,1       |              ;
 stw r3,0(r4) | li r3,1      | stwx r4,r3,r5 |              ;
              | stw r3,0(r4) |               |              ;
exists
(x=2 /\ z=2 /\ 0:r1=2 /\ 2:r1=1)