Test IRRWIW+poacquireacquire+ctrlonceonce+OnceOnce

LISA IRRWIW+poacquireacquire+ctrlonceonce+OnceOnce
"RfeOnceAcquire PodRRAcquireAcquire FreAcquireOnce RfeOnceOnce DpCtrldWOnceOnce WseOnceOnce"
Cycle=PodRRAcquireAcquire FreAcquireOnce RfeOnceOnce DpCtrldWOnceOnce WseOnceOnce RfeOnceAcquire
Relax=FreAcquireOnce RfeOnceAcquire
Safe=PodRRAcquireAcquire RfeOnceOnce WseOnceOnce DpCtrldWOnceOnce
Prefetch=1:x=F,1:y=T,3:y=F,3:x=W
Com=Rf Fr Rf Ws
Orig=RfeOnceAcquire PodRRAcquireAcquire FreAcquireOnce RfeOnceOnce DpCtrldWOnceOnce WseOnceOnce
{
}
 P0          | P1              | P2          | P3               ;
 w[once] x 2 | r[acquire] r0 x | w[once] y 1 | r[once] r0 y     ;
             | r[acquire] r1 y |             | mov r1 (eq r0 0) ;
             |                 |             | 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;