Test SB+popx+poxp+SYS2

AArch64 SB+popx+poxp+SYS2
"PodWRPX FreXX PodWRXP Fre"
Cycle=Fre PodWRPX FreXX PodWRXP
Relax=FreXX
Safe=Fre PodWR
Prefetch=0:x=F,0:y=T,1:y=F,1:x=T
Com=Fr Fr
Orig=PodWRPX FreXX PodWRXP Fre
{
0:X1=x; 0:X2=y;
1:X0=y; 1:X5=x;
}
 P0              | P1              ;
 MOV W0,#1       | MOV W1,#1       ;
 STR W0,[X1]     | LDXR W2,[X0]    ;
 LDXR W3,[X2]    | STXR W3,W1,[X0] ;
 STXR W4,W3,[X2] | LDR W4,[X5]     ;
exists
(y=1 /\ 0:X4=0 /\ 0:X3=0 /\ 1:X3=0 /\ 1:X2=0 /\ 1:X4=0)