ARM WRW+WR+ctrlisb+dmb.st "Rfe DpCtrlIsbdW Wse DMB.STdWR Fre" Cycle=Rfe DpCtrlIsbdW Wse DMB.STdWR Fre Prefetch=0:x=T,1:x=F,1:y=W,2:y=F,2:x=T Com=Rf Ws Fr Orig=Rfe DpCtrlIsbdW Wse DMB.STdWR Fre { %x0=x; %x1=x; %y1=y; %y2=y; %x2=x; } P0 | P1 | P2 ; MOV R0,#1 | LDR R0,[%x1] | MOV R0,#2 ; STR R0,[%x0] | CMP R0,R0 | STR R0,[%y2] ; | BNE LC00 | DMB ST ; | LC00: | LDR R1,[%x2] ; | ISB | ; | MOV R1,#1 | ; | STR R1,[%y1] | ; Observed 1:R0=1; 2:R1=0; y=2;