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