AArch64 C11-B2 "variant of example B from notes41 that is forbidden by Ori's C11" { 0:X1=x; 0:X3=a; 1:X1=a; 1:X3=b; 1:X5=y; 2:X1=y; 2:X4=x; } P0 | P1 | P2 ; MOV W0,#2 | LDR W0,[X1] | MOV W0,#1 ; STLR W0,[X1] | DMB LD | STLR W0,[X1] ; MOV W2,#1 | LDAR W2,[X3] | MOV W2,#2 ; STLR W2,[X3] | LDAR W4,[X5] | STLR W2,[X1] ; | | MOV W3,#1 ; | | STLR W3,[X4] ; exists (x=2 /\ y=2 /\ 1:X0=1 /\ 1:X2=0 /\ 1:X4=1)