LISA auto/LB-LWR+R-Oc+R-Oc (* * Result: Sometimes * P0-P1 rf R-Oc: Never->Maybe: Note lack of C11 guarantee, control dependency * P1 Oc,R: Note lack of C11 guarantee * P1-P2 rf R-Oc: Note lack of C11 guarantee, control dependency * P2 Oc,LWR: Maybe->Sometimes: Control dependencies do not order trailing reads *) { 1:r4=1; 2:r4=1; } P0 | P1 | P2 ; w[once] u0 3 | r[once] r1 x1 | r[once] r1 x2 ; w[release] x1 1 | mov r4 (neq r1 r4) | mov r4 (neq r1 r4) ; | b[] r4 CTRL1 | b[] r4 CTRL2 ; | w[release] x2 1 | r[once] r2 u0 ; | CTRL1: | CTRL2: ; Observed 2:r2=0; 2:r1=1; 1:r1=1;