Test LISA-rfi-acq2

LISA LISA-rfi-acq2
(* Can an ordinary write be forwarded to a read-acquire? *)
{
}
 P0          | P1              ;
 w[once] x 1 | r[once] r1 y    ;
 f[wmb]      | w[once] z r1    ;
 w[once] y 1 | f[wmb]          ;
             | w[once] u 1     ;
             | r[acquire] r2 u ;
             | r[once] r3 x    ;
Observed
    1:r3=0; 1:r1=1;