void NextInsn(int incr)
{
int ncount = 0;
if (iroot == null)
{
icur = iroot = new IAsm();
}
else
{
ncount = icur.getICount() + incr; /* propogate previous count */
icur.setNext(new IAsm());
icur = icur.getNext();
}
icur.setICount(ncount);
}