AArch64 MP+dmb.sy+ctrl-[fr-rf]-ctrl-pos-ctrl
"DMB.SYdWW Rfe DpCtrldR FrLeave RfBack DpCtrldR PosRR DpCtrldR Fre"
Cycle=Rfe DpCtrldR FrLeave RfBack DpCtrldR PosRR DpCtrldR Fre DMB.SYdWW
Relax=
Safe=Rfe Fre PosRR DMB.SYdWW DpCtrldR [FrLeave,RfBack]
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr Rf
Orig=DMB.SYdWW Rfe DpCtrldR FrLeave RfBack DpCtrldR PosRR 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,#1 ;
STR W0,[X1] | CBNZ W0,LC00 | STR W0,[X1] ;
DMB SY | LC00: | ;
MOV W2,#1 | LDR W2,[X3] | ;
STR W2,[X3] | LDR W4,[X3] | ;
| CBNZ W4,LC01 | ;
| LC01: | ;
| LDR W5,[X6] | ;
| LDR W7,[X6] | ;
| CBNZ W7,LC02 | ;
| LC02: | ;
| LDR W8,[X9] | ;
Observed
z=1; y=1; x=1; 1:X8=1; 1:X4=0; 1:X2=1; 1:X0=1;
and z=1; y=1; x=1; 1:X8=1; 1:X4=0; 1:X2=1; 1:X0=0;
and z=1; y=1; x=1; 1:X8=0; 1:X4=0; 1:X2=1; 1:X0=0;