Test cc1

PPC cc1 (CCOne)
"Double sync test, store-load|store-load"
{
 0:r2=2; 0:r4=x;
 1:r2=2; 1:r5=y;
 2:r1=1; 2:r4=x; 2:r5=y;
 3:r1=1; 3:r4=x; 3:r5=y;
}

P0          | P1         |P2             |P3               ;
stw r2,0(r4)|stw r2,0(r5)|stw r1,0,r4    |stw r1,0,r5      ;
            |            |lwz r2,0,r5    |lwz r2,0,r4      ;

locations [x;y]
exists (2:r2=0 /\ 3:r2=0)