Test safe115

PPC safe115
"LwSyncdWW Wse SyncdWW Rfe SyncdRW Wse"
Cycle=LwSyncdWW Wse SyncdWW Rfe SyncdRW Wse
Relax=
Safe=Wse SyncdRW LwSyncdWW BCSyncdWW
{
0:r2=x; 0:r4=y;
1:r2=y; 1:r4=z;
2:r2=z; 2:r4=x;
}
 P0           | P1           | P2           ;
 li r1,2      | lwz r1,0(r2) | li r1,2      ;
 stw r1,0(r2) | sync         | stw r1,0(r2) ;
 sync         | li r3,1      | lwsync       ;
 li r3,1      | stw r3,0(r4) | li r3,1      ;
 stw r3,0(r4) |              | stw r3,0(r4) ;
exists
(x=2 /\ z=2 /\ 1:r1=1)