Test IRWIW+poacquireonce+ctrlonceonce+OnceRelease

LISA IRWIW+poacquireonce+ctrlonceonce+OnceRelease
"RfeOnceAcquire PodRWAcquireOnce WseOnceRelease RfeReleaseOnce DpCtrldWOnceOnce WseOnceOnce"
Cycle=PodRWAcquireOnce WseOnceRelease RfeReleaseOnce DpCtrldWOnceOnce WseOnceOnce RfeOnceAcquire
Relax=RfeOnceAcquire WseOnceRelease RfeReleaseOnce
Safe=PodRWAcquireOnce WseOnceOnce DpCtrldWOnceOnce
Prefetch=1:x=F,1:y=W,3:y=F,3:x=W
Com=Rf Ws Rf Ws
Orig=RfeOnceAcquire PodRWAcquireOnce WseOnceRelease RfeReleaseOnce DpCtrldWOnceOnce WseOnceOnce
{
}
 P0          | P1              | P2             | P3               ;
 w[once] x 2 | r[acquire] r0 x | w[release] y 2 | r[once] r0 y     ;
             | w[once] y 1     |                | mov r1 (eq r0 0) ;
             |                 |                | b[] r1 LC00      ;
             |                 |                | LC00:            ;
             |                 |                | w[once] x 1      ;
Observed
    y=2; x=2; 3:r0=1; 1:r0=2;
and y=1; x=2; 3:r0=1; 1:r0=2;