Test CAS+data1

AArch64 CAS+data1
{
0:X1=x; 0:X3=y;
1:X1=x; 1:X3=y;
}
 P0                | P1          ;
 NOP               | LDR W0, [X1];
 NOP               | MOV W5, W0;
 NOP               | MOV W6, #1;
 MOV W0, #1        | CAS W0, W6, [X1] ;
 STR W0, [X3]      | STR W4, [X3];
 STLR W0, [X1]     | NOP;
Observed
    y=1; 1:X5=1;