Test safe537

PPC safe537
"SyncdWW Rfe DpdW Rfe SyncsRW Rfe SyncdRR Fre"
Cycle=SyncdWW Rfe DpdW Rfe SyncsRW Rfe SyncdRR Fre
Relax=
Safe=Fre DpdW ACSyncsRW ACSyncdRR BCSyncdWW
{
0:r2=x; 0:r5=y;
1:r2=y;
2:r2=y; 2:r4=z;
3:r2=z; 3:r4=x;
}
 P0            | P1           | P2           | P3           ;
 lwz r1,0(r2)  | lwz r1,0(r2) | lwz r1,0(r2) | li r1,1      ;
 xor r3,r1,r1  | sync         | sync         | stw r1,0(r2) ;
 li r4,1       | li r3,2      | lwz r3,0(r4) | sync         ;
 stwx r4,r3,r5 | stw r3,0(r2) |              | li r3,1      ;
               |              |              | stw r3,0(r4) ;
exists
(y=2 /\ 0:r1=1 /\ 1:r1=1 /\ 2:r1=2 /\ 2:r3=0)