Below is the C code for a function f$,$ but with the if test expression replaced by the comment $/*$ TEST $*/.$ The assembly that was generated by compiling the original function f appears below the C code. What was the test expression in the original C code?

long f$($long x$,$ long y$)\{$

if $(/*$ TEST $*/)$

return x $*16$;

else

return x $|4$;

$\}$

f:

movq $\%$rdi, $\%$rdx

salq $$4,\%$rdx

movq $\%$rdi, $\%$rax

orq $$4,\%$rax

cmpq $\%$rsi, $\%$rdi

cmovg $\%$rdx$,\%$rax

ret