Test IRIW+poacquireonce+fencembonceonce+ReleaseRelease

LISA IRIW+poacquireonce+fencembonceonce+ReleaseRelease
"RfeReleaseAcquire PodRRAcquireOnce FreOnceRelease RfeReleaseOnce FenceMbdRROnceOnce FreOnceRelease"
Cycle=PodRRAcquireOnce FreOnceRelease RfeReleaseOnce FenceMbdRROnceOnce FreOnceRelease RfeReleaseAcquire
Relax=FreOnceRelease RfeReleaseAcquire RfeReleaseOnce
Safe=PodRRAcquireOnce FenceMbdRROnceOnce
Prefetch=1:x=F,1:y=T,3:y=F,3:x=T
Com=Rf Fr Rf Fr
Orig=RfeReleaseAcquire PodRRAcquireOnce FreOnceRelease RfeReleaseOnce FenceMbdRROnceOnce FreOnceRelease
{
}
 P0             | P1              | P2             | P3           ;
 w[release] x 1 | r[acquire] r0 x | w[release] y 1 | r[once] r0 y ;
                | r[once] r1 y    |                | f[mb]        ;
                |                 |                | r[once] r1 x ;
Observed
    3:r1=0; 3:r0=1; 1:r1=0; 1:r0=1;