function $test {
 @start
	%x =w copy 1
 @loop
	jnz %x, @noz, @isz
 @noz
	%x =w copy 0
	jnz %x, @loop, @end
 @isz
	%x =w copy 1
	jmp @loop
 @end
	%z =w add 10, %x
	ret
}