X86 X056-A "Fre PodWW Wse PodWW Wse PodWR" {} P0 | P1 | P2 ; MOV [z],$1 | MOV [x],$2 | MOV %atom,$2 ; MOV [x],$1 | MOV [y],$1 | XCHG [y],%atom ; | | MOV EAX,[z] ; forall (2:EAX=1 /\ (x=2 /\ (y=2 \/ y=1) \/ x=1 /\ (y=2 \/ y=1)) \/ 2:EAX=0 /\ (x=2 /\ y=1 \/ x=1 /\ (y=2 \/ y=1)))