AArch64 MP+dmb.sy+data-[ws-rf]-data-rfi-pos
"DMB.SYdWW Rfe DpDatadW WsLeave RfBack DpDatadW Rfi PosRR Fre"
Cycle=Rfi PosRR Fre DMB.SYdWW Rfe DpDatadW WsLeave RfBack DpDatadW
Relax=
Safe=Rfi Rfe Fre PosRR DMB.SYdWW DpDatadW [WsLeave,RfBack]
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr Rf
Orig=DMB.SYdWW Rfe DpDatadW WsLeave RfBack DpDatadW Rfi PosRR Fre
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X3=z; 1:X6=x;
2:X1=z;
}
P0 | P1 | P2 ;
MOV W0,#2 | LDR W0,[X1] | MOV W0,#2 ;
STR W0,[X1] | EOR W2,W0,W0 | STR W0,[X1] ;
DMB SY | ADD W2,W2,#1 | ;
MOV W2,#1 | STR W2,[X3] | ;
STR W2,[X3] | LDR W4,[X3] | ;
| EOR W5,W4,W4 | ;
| ADD W5,W5,#1 | ;
| STR W5,[X6] | ;
| LDR W7,[X6] | ;
| LDR W8,[X6] | ;
Observed
z=2; y=1; x=2; 1:X8=1; 1:X7=2; 1:X4=1; 1:X0=0;
and z=1; y=1; x=2; 1:X8=1; 1:X7=2; 1:X4=1; 1:X0=0;