Given the following disassembly of a function:

// int fun( long x ) // x in %rdi fun: xorl %eax,%eax testq %rdi,%rdi setg %al retq 

What is the purpose of the first line of assembly:

 xorl %eax,%eax 

Question 9 options:

	Reset the flags register
	Set %eax to zero
	It makes the assembly more appealing
	Multiply %eax by itself