ARM SB0030 "DMBdWR Fre PosWW PodWW PosWR Fre" Cycle=Fre PosWW PodWW PosWR Fre DMBdWR Relax=[Fre,DMBdWR,Fre] Safe=PosWW PosWR PodWW Prefetch=0:x=F,0:y=T,1:y=F,1:x=T Com=Fr Fr Orig=DMBdWR Fre PosWW PodWW PosWR Fre { %x0=x; %y0=y; %y1=y; %x1=x; } P0 | P1 ; MOV R0,#2 | MOV R0,#1 ; STR R0,[%x0] | STR R0,[%y1] ; DMB | MOV R1,#2 ; LDR R1,[%y0] | STR R1,[%y1] ; | MOV R2,#1 ; | STR R2,[%x1] ; | LDR R3,[%x1] ; Observed 0:R1=0; 1:R3=2; x=2; y=2; and 0:R1=1; 1:R3=2; x=2; y=2;