AArch64 MP+dmb.sy+ctrl-[ws-rf]-data-rfi-ctrl
"DMB.SYdWW Rfe DpCtrldW WsLeave RfBack DpDatadW Rfi DpCtrldR Fre"
Cycle=Rfi DpCtrldR Fre DMB.SYdWW Rfe DpCtrldW WsLeave RfBack DpDatadW
Relax=
Safe=Rfi Rfe Fre DMB.SYdWW DpDatadW DpCtrldW DpCtrldR [WsLeave,RfBack]
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr Rf
Orig=DMB.SYdWW Rfe DpCtrldW WsLeave RfBack DpDatadW Rfi DpCtrldR Fre
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X3=z; 1:X6=a; 1:X9=x;
2:X1=z;
}
P0 | P1 | P2 ;
MOV W0,#1 | LDR W0,[X1] | MOV W0,#2 ;
STR W0,[X1] | CBNZ W0,LC00 | STR W0,[X1] ;
DMB SY | LC00: | ;
MOV 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] | ;
| CBNZ W7,LC01 | ;
| LC01: | ;
| LDR W8,[X9] | ;
Observed
z=2; y=1; x=1; a=1; 1:X8=0; 1:X7=1; 1:X4=2; 1:X0=1;