ARM S+dmb+data+Wext+LOCAL "DMBdWW Rfe DpDatadW Wse Wse" Prefetch=0:x=F,0:y=W,1:y=F,1:x=W Com=Rf Ws Ws Orig=DMBdWW Rfe DpDatadW Wse Wse { %x0=x; %y0=y; %y1=y; %x1=x; %x2=x; } P0 | P1 | P2 ; MOV R0,#3 | LDR R0,[%y1] | MOV R0,#2 ; STR R0,[%x0] | EOR R1,R0,R0 | STR R0,[%x2] ; DMB | ADD R1,R1,#1 | LDR R1,[%x2] ; MOV R1,#1 | STR R1,[%x1] | ; STR R1,[%y0] | LDR R2,[%x1] | ; Observed 1:R0=0; 1:R2=3; 2:R1=1; x=3; and 1:R0=0; 1:R2=2; 2:R1=3; x=3; and 1:R0=0; 1:R2=3; 2:R1=3; x=3;