ARM WRW+2W+isb+dsb.st "Rfe ISBdRW Wse DSB.STdWW Wse" Cycle=Rfe ISBdRW Wse DSB.STdWW Wse Prefetch=0:x=F,1:x=F,1:y=W,2:y=F,2:x=W Com=Rf Ws Ws Orig=Rfe ISBdRW Wse DSB.STdWW Wse { %x0=x; %x1=x; %y1=y; %y2=y; %x2=x; } P0 | P1 | P2 ; MOV R0,#2 | LDR R0,[%x1] | MOV R0,#2 ; STR R0,[%x0] | ISB | STR R0,[%y2] ; | MOV R1,#1 | DSB ST ; | STR R1,[%y1] | MOV R1,#1 ; | | STR R1,[%x2] ; Observed 1:R0=1; x=1; y=2; and 1:R0=1; x=2; y=2; and 1:R0=2; x=2; y=2;