LISA auto/LB-GWW+R-A+R-Oc+R-A+R-Oc
(*
* Result: Maybe
* P0 GWW: Never->Maybe: Should rel-acq provide any global transitivity?
* P1-P2 rf R-Oc: Note lack of C11 guarantee, control dependency
* P2 Oc,R: Note lack of C11 guarantee
* P3-P4 rf R-Oc: Note lack of C11 guarantee, control dependency
* P4 Oc,GWW: Note lack of C11 guarantee, control dependency
*)
{
2:r4=1; 4:r4=1;
}
P0 | P1 | P2 | P3 | P4 | P5 ;
w[once] u0 3 | r[acquire] r1 x1 | r[once] r1 x2 | r[acquire] r1 x3 | r[once] r1 x4 | r[once] r1 v0 ;
w[release] x1 1 | w[release] x2 1 | mov r4 (neq r1 r4) | w[release] x4 1 | mov r4 (neq r1 r4) | f[mb] ;
| | b[] r4 CTRL2 | | b[] r4 CTRL4 | r[once] r2 u0 ;
| | w[release] x3 1 | | w[once] v0 1 | ;
| | CTRL2: | | CTRL4: | ;
Observed
5:r2=0; 5:r1=1; 4:r1=1; 3:r1=1; 2:r1=1; 1:r1=1;