Test IRIW+fencembonceonce+poacquireacquire+OnceRelease

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