Test T9C

AArch64 T9C
{
0:X1=x; 0:X2=y;
1:X1=y; 1:X3=x; 1:X4=za; 1:X5=zb;
}
P0           | P1               ;
MOV W0,#1    | LDR W0,[X1]      ;
STR W0,[X1]  | CMP W0,#0        ;
STLR W0,[X2] | CSEL X2,X4,X5,EQ ;
             | LDAR W6,[X2]     ;
             | LDR W7,[X3]      ;
Observed
    1:X7=0; 1:X0=1;