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