Test IRWIW+poacquireonce+pooncerelease+OnceOnce

LISA IRWIW+poacquireonce+pooncerelease+OnceOnce
"RfeOnceAcquire PodRWAcquireOnce WseOnceOnce RfeOnceOnce PodRWOnceRelease WseReleaseOnce"
Cycle=PodRWAcquireOnce WseOnceOnce RfeOnceOnce PodRWOnceRelease WseReleaseOnce RfeOnceAcquire
Relax=RfeOnceAcquire WseReleaseOnce
Safe=PodRWAcquireOnce RfeOnceOnce WseOnceOnce PodRWOnceRelease
Prefetch=1:x=F,1:y=W,3:y=F,3:x=W
Com=Rf Ws Rf Ws
Orig=RfeOnceAcquire PodRWAcquireOnce WseOnceOnce RfeOnceOnce PodRWOnceRelease WseReleaseOnce
{
}
 P0          | P1              | P2          | P3             ;
 w[once] x 2 | r[acquire] r0 x | w[once] y 2 | r[once] r0 y   ;
             | w[once] y 1     |             | w[release] x 1 ;
Observed
    y=2; x=2; 3:r0=2; 1:r0=2;
and y=2; x=2; 3:r0=1; 1:r0=2;
and y=1; x=2; 3:r0=1; 1:r0=2;