Test safe299

PPC safe299
"Rfe SyncdRR Fre SyncdWW Rfe SyncsRW Rfe DpdW Wsi"
Cycle=Rfe SyncdRR Fre SyncdWW Rfe SyncsRW Rfe DpdW Wsi
Relax=
Safe=Fre Wsi DpdW ACSyncdRR BCSyncsRW BCSyncdWW
{
0:r2=z; 0:r4=x;
1:r2=x; 1:r4=y;
2:r2=y;
3:r2=y; 3:r5=z;
}
 P0           | P1           | P2           | P3            ;
 lwz r1,0(r2) | li r1,1      | lwz r1,0(r2) | lwz r1,0(r2)  ;
 sync         | stw r1,0(r2) | sync         | xor r3,r1,r1  ;
 lwz r3,0(r4) | sync         | li r3,2      | li r4,1       ;
              | li r3,1      | stw r3,0(r2) | stwx r4,r3,r5 ;
              | stw r3,0(r4) |              | li r6,2       ;
              |              |              | stw r6,0(r5)  ;
Observed
    0:r1=1; 0:r3=0; 2:r1=0; 3:r1=2; y=2; z=2;