Consider the following example

void main()
{
	int[] y = {};	
	y += 1;
	y += 2;
	y += 3;
	y += 4;
	
}

compiling this with the -C flag set, the generated C code includes the following declaration

static void _vala_array_add1 (gint** array, int* length, int* size, gint value);
static void _vala_array_add2 (gint** array, int* length, int* size, gint value);
static void _vala_array_add3 (gint** array, int* length, int* size, gint value);
static void _vala_array_add4 (gint** array, int* length, int* size, gint value);

all of which have the same identical implementation. Why is it necessary to generate multiple functions with identical implementations for each statement in vala when one would be sufficient? If one were to use the append statement very often, vala would end up generating a really huge binary.