Test IRWIW+ctrlonceonce+pooncerelease+OnceOnce

LISA IRWIW+ctrlonceonce+pooncerelease+OnceOnce
"RfeOnceOnce DpCtrldWOnceOnce WseOnceOnce RfeOnceOnce PodRWOnceRelease WseReleaseOnce"
Cycle=RfeOnceOnce DpCtrldWOnceOnce WseOnceOnce RfeOnceOnce PodRWOnceRelease WseReleaseOnce
Relax=WseReleaseOnce
Safe=RfeOnceOnce WseOnceOnce DpCtrldWOnceOnce PodRWOnceRelease
Prefetch=1:x=F,1:y=W,3:y=F,3:x=W
Com=Rf Ws Rf Ws
Orig=RfeOnceOnce DpCtrldWOnceOnce WseOnceOnce RfeOnceOnce PodRWOnceRelease WseReleaseOnce
{
}
 P0          | P1               | P2          | P3             ;
 w[once] x 2 | r[once] r0 x     | w[once] y 2 | r[once] r0 y   ;
             | mov r1 (eq r0 0) |             | w[release] x 1 ;
             | b[] r1 LC00      |             |                ;
             | LC00:            |             |                ;
             | w[once] y 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;