Executions for behaviour:
"1:R0=1 ; 1:R3=0 ; y=2"

ARM MP0105
"DMBdWW Rfe PosRW PosWR DpCtrlIsbdR Fre"
Cycle=Rfe PosRW PosWR DpCtrlIsbdR Fre DMBdWW
Relax=[Fre,DMBdWW,Rfe]
Safe=PosWR PosRW DpCtrlIsbdR
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr
Orig=DMBdWW Rfe PosRW PosWR DpCtrlIsbdR Fre
{
%x0=x; %y0=y;
%y1=y; %x1=x;
}
P0 | P1 ;
MOV R0,#1 | LDR R0,[%y1] ;
STR R0,[%x0] | MOV R1,#2 ;
DMB | STR R1,[%y1] ;
MOV R1,#1 | LDR R2,[%y1] ;
STR R1,[%y0] | CMP R2,R2 ;
| BNE LC00 ;
| LC00: ;
| ISB ;
| LDR R3,[%x1] ;
Observed
1:R0=1; 1:R3=0; y=2;