Optimising stuff

Assembly

	.file	"array.c"
	.section	.text.unlikely,"ax",@progbits
.LCOLDB0:
	.section	.text.startup,"ax",@progbits
.LHOTB0:
	.p2align 4,,15
	.globl	main
	.type	main, @function
main:
	movl	$5, %eax
	ret
	.size	main, .-main
	.section	.text.unlikely
.LCOLDE0:
	.section	.text.startup
.LHOTE0:
	.ident	"GCC: (GNU) 5.1.0"
	.section	.note.GNU-stack,"",@progbits

C

int main()
{
  int arr[3] = {1,2,3};
  arr[0] = 5;
  return arr[0];
}