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

ARM MP+PPO404
"Fre DMBdWW Rfe PosRW PosWR DpCtrlIsbdR"
Cycle=Rfe PosRW PosWR DpCtrlIsbdR Fre DMBdWW
Relax=
Safe=Rfe Fre PosWR PosRW DMBdWW DpCtrlIsbdR
Prefetch=1:x=T
Orig=Fre DMBdWW Rfe PosRW PosWR DpCtrlIsbdR
{
%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;