Test IRRWIW+fencembonceonce+ctrlonceonce+OnceRelease

LISA IRRWIW+fencembonceonce+ctrlonceonce+OnceRelease
"RfeOnceOnce FenceMbdRROnceOnce FreOnceRelease RfeReleaseOnce DpCtrldWOnceOnce WseOnceOnce"
Cycle=RfeOnceOnce FenceMbdRROnceOnce FreOnceRelease RfeReleaseOnce DpCtrldWOnceOnce WseOnceOnce
Relax=FreOnceRelease RfeReleaseOnce
Safe=RfeOnceOnce WseOnceOnce FenceMbdRROnceOnce DpCtrldWOnceOnce
Prefetch=1:x=F,1:y=T,3:y=F,3:x=W
Com=Rf Fr Rf Ws
Orig=RfeOnceOnce FenceMbdRROnceOnce FreOnceRelease RfeReleaseOnce DpCtrldWOnceOnce WseOnceOnce
{
}
 P0          | P1           | P2             | P3               ;
 w[once] x 2 | r[once] r0 x | w[release] y 1 | r[once] r0 y     ;
             | f[mb]        |                | mov r1 (eq r0 0) ;
             | r[once] r1 y |                | b[] r1 LC00      ;
             |              |                | LC00:            ;
             |              |                | w[once] x 1      ;
Observed
    x=2; 3:r0=1; 1:r1=0; 1:r0=2;
and x=2; 3:r0=1; 1:r1=0; 1:r0=1;
and x=1; 3:r0=1; 1:r1=0; 1:r0=1;