LISA IRIW+poacquireacquire+poacquireonce+OnceOnce "RfeOnceAcquire PodRRAcquireAcquire FreAcquireOnce RfeOnceAcquire PodRRAcquireOnce FreOnceOnce" Cycle=PodRRAcquireAcquire FreAcquireOnce RfeOnceAcquire PodRRAcquireOnce FreOnceOnce RfeOnceAcquire Relax=FreAcquireOnce RfeOnceAcquire Safe=PodRRAcquireAcquire PodRRAcquireOnce FreOnceOnce Prefetch=1:x=F,1:y=T,3:y=F,3:x=T Com=Rf Fr Rf Fr Orig=RfeOnceAcquire PodRRAcquireAcquire FreAcquireOnce RfeOnceAcquire PodRRAcquireOnce FreOnceOnce { } P0 | P1 | P2 | P3 ; w[once] x 1 | r[acquire] r0 x | w[once] y 1 | r[acquire] r0 y ; | r[acquire] r1 y | | r[once] r1 x ; Observed 3:r1=0; 3:r0=1; 1:r1=0; 1:r0=1;