/* $Id$ */ /* * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands. * See the copyright notice in the ACK home directory, in the file "Copyright". */ extern avail_p avails; /* The set of available expressions. */ extern avail_p av_enter(); /* (avail_p avp, occur_p ocp, byte kind) * Puts the available expression in avp * in the list of available expressions, * if it is not already there. Add ocp to set of * occurrences of this expression. * If we have a new expression, we test whether * the result is saved. When this expression * recurs,we test if we can still use the * variable into which it was saved. * (Kind is the kind of the expression.) * Returns a pointer into the list. */ extern clr_avails(); /* Release all space occupied by the old list * of available expressions. */