…
AArch64 MP+dmb.sy+[fr-rf]-data-rfi-data-rfi
"DMB.SYdWW Rfe FrLeave RfBack DpDatadW Rfi DpDatadW Rfi Fre"
Cycle=Rfi Fre DMB.SYdWW Rfe FrLeave RfBack DpDatadW Rfi DpDatadW
Relax=
Safe=Rfi Rfe Fre DMB.SYdWW DpDatadW [FrLeave,RfBack]
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr Rf
Orig=DMB.SYdWW Rfe FrLeave RfBack DpDatadW Rfi DpDatadW Rfi Fre
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X4=z; 1:X7=x;
2:X1=y;
}
P0 | P1 | P2 ;
MOV W0,#2 | LDR W0,[X1] | MOV W0,#2 ;
STR W0,[X1] | LDR W2,[X1] | STR W0,[X1] ;
DMB SY | EOR W3,W2,W2 | ;
MOV W2,#1 | ADD W3,W3,#1 | ;
STR W2,[X3] | STR W3,[X4] | ;
| LDR W5,[X4] | ;
| EOR W6,W5,W5 | ;
| ADD W6,W6,#1 | ;
| STR W6,[X7] | ;
| LDR W8,[X7] | ;
Observed
z=1; y=1; x=2; 1:X8=1; 1:X5=1; 1:X2=0; 1:X0=2;
and z=1; y=2; x=1; 1:X8=1; 1:X5=1; 1:X2=0; 1:X0=2;
and z=1; y=1; x=1; 1:X8=1; 1:X5=1; 1:X2=0; 1:X0=2;
and z=1; y=2; x=1; 1:X8=1; 1:X5=1; 1:X2=0; 1:X0=1;
and z=1; y=1; x=1; 1:X8=1; 1:X5=1; 1:X2=0; 1:X0=1;