Test S+popxs+SYS2

AArch64 S+popxs+SYS2
"PodWWPX RfeXP PodRWPX WseXP"
Cycle=PodWWPX RfeXP PodRWPX WseXP
Relax=RfeXP WseXP
Safe=PodWW PodRW
Prefetch=0:x=F,0:y=W,1:y=F,1:x=W
Com=Rf Ws
Orig=PodWWPX RfeXP PodRWPX WseXP
{
0:X1=x; 0:X2=y;
1:X1=y; 1:X2=x;
}
 P0              | P1              ;
 MOV W0,#2       | LDR W0,[X1]     ;
 STR W0,[X1]     | MOV W3,#1       ;
 MOV W3,#1       | LDXR W4,[X2]    ;
 LDXR W4,[X2]    | STXR W5,W3,[X2] ;
 STXR W5,W3,[X2] |                 ;
exists
(x=2 /\ y=1 /\ 0:X5=0 /\ 0:X4=0 /\ 1:X5=0 /\ 1:X0=1 /\ 1:X4=0)