}

func (l *loop) setDepth(d int16) {
	l.depth = d
	for _, c := range l.children {
		c.setDepth(d + 1)
	}
}

// iterationEnd checks if block b ends iteration of loop l.
// Ending iteration means either escaping to outer loop/code or
// going back to header
func (l *loop) iterationEnd(b *Block, b2l []*loop) bool {
	return b == l.header || b2l[b.ID] == nil || (b2l[b.ID] != l && b2l[b.ID].depth <= l.depth)