Consider the following procedure written in C:

void initialize$($int arr$[],$ int x$,$ int y$)\{$

int i;

for$($i $=0$; i $<100$; i$++)$

arr$[$i$]=$ x$*$y;

$\}$

This code has been compiled with $-$O$2$ to get the following x$86$ code:

imull $\%$edx, $\%$esi

xorl $\%$eax, $\%$eax

$.$L$3$:

movl $\%$esi, $(\%$rdi,$\%$rax$)$

addq $$4,\%$rax

cmpq $$400,\%$rax

jne $.$L$3$

ret

What is the most significant optimization the compiler has performed?

Group of answer choices

code motion

strength reduction

common subexpression elimination