Merge similar probes within a module.

elaborate.cc

@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #if !defined(WINNT) && !defined(macintosh)
-#ident "$Id: elaborate.cc,v 1.173 2000/05/16 04:05:16 steve Exp $"
+#ident "$Id: elaborate.cc,v 1.174 2000/05/27 19:33:23 steve Exp $"
 #endif
 
 /*
@@ -1832,8 +1832,17 @@ NetProc* PEventStatement::elaborate_st(Design*des, const string&path,
 	   expression (and not a named event) then add this
 	   event. Otherwise, we didn't use it so delete it. */
       if (expr_count > 0) {
+	    if (NetEvent*match = ev->find_similar_event()) {
+		  cerr << "XXXX Found similar event for " <<
+			ev->name() << endl;
+		  delete ev;
+		  wa->add_event(match);
+
+	    } else {
+
 		  scope->add_event(ev);
 		  wa->add_event(ev);
+	    }
       } else {
 	    delete ev;
       }
@@ -2429,6 +2438,9 @@ Design* elaborate(const map<string,Module*>&modules,
 
 /*
  * $Log: elaborate.cc,v $
+ * Revision 1.174  2000/05/27 19:33:23  steve
+ *  Merge similar probes within a module.
+ *
  * Revision 1.173  2000/05/16 04:05:16  steve
  *  Module ports are really special PEIdent
  *  expressions, because a name can be used

net_event.cc

@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #if !defined(WINNT) && !defined(macintosh)
-#ident "$Id: net_event.cc,v 1.6 2000/04/18 04:50:20 steve Exp $"
+#ident "$Id: net_event.cc,v 1.7 2000/05/27 19:33:23 steve Exp $"
 #endif
 
 # include  "netlist.h"
@@ -93,6 +93,73 @@ unsigned NetEvent::nwait() const
       return waitref_;
 }
 
+NetEvent* NetEvent::find_similar_event()
+{
+      if (probes_ == 0)
+	    return 0;
+#define NCAND 256
+      NetEvent*cand[NCAND];
+      bool cflg[NCAND];
+      unsigned ncand = 0;
+
+      NetEvProbe*cur = probes_;
+
+	/* First locate all the canditate events from the probe
+	   objects that are connected to them. */
+
+      for (NetNode*idx = cur->next_node()
+		 ; idx && (idx != cur) ;  idx = idx->next_node()) {
+	    NetEvProbe*tmp = dynamic_cast<NetEvProbe*>(idx);
+	    if (tmp == 0)
+		  continue;
+	    if (tmp->edge() != cur->edge())
+		  continue;
+
+	    cand[ncand++] = tmp->event();
+	    assert(ncand <= NCAND);
+      }
+
+      for (cur = cur->enext_ ;  cur && ncand ;  cur = cur->enext_) {
+	    for (unsigned idx = 0 ;  idx < ncand ;  idx += 1)
+		  cflg[idx] = false;
+
+	    for (NetNode*idx = cur->next_node()
+		       ; idx && (idx != cur) ;  idx = idx->next_node()) {
+		  NetEvProbe*tmp = dynamic_cast<NetEvProbe*>(idx);
+		  if (tmp == 0)
+			continue;
+		  if (tmp->edge() != cur->edge())
+			continue;
+
+		  for (unsigned srch = 0 ;  srch < ncand ;  srch += 1)
+			if (cand[srch] == tmp->event()) {
+			      cflg[srch] = true;
+			      break;
+			}
+	    }
+
+	    for (unsigned idx = 0 ;  idx < ncand ;  ) {
+		  if (cflg[idx]) {
+			idx += 1;
+			continue;
+		  }
+
+		  for (unsigned tmp = idx ;  idx+1 < ncand ;  idx += 1) {
+			cflg[tmp] = cflg[tmp+1];
+			cand[tmp] = cand[tmp+1];
+		  }
+		  ncand -= 1;
+	    }
+      }
+
+      for (unsigned idx = 0 ;  idx < ncand ;  idx += 1) {
+	    if (cand[idx]->nprobe() == nprobe())
+		  return cand[idx];
+      }
+
+      return 0;
+}
+
 NetEvTrig::NetEvTrig(NetEvent*ev)
 : event_(ev)
 {
@@ -155,6 +222,11 @@ NetEvProbe::edge_t NetEvProbe::edge() const
       return edge_;
 }
 
+NetEvent* NetEvProbe::event()
+{
+      return event_;
+}
+
 const NetEvent* NetEvProbe::event() const
 {
       return event_;
@@ -225,6 +297,9 @@ NetProc* NetEvWait::statement()
 
 /*
  * $Log: net_event.cc,v $
+ * Revision 1.7  2000/05/27 19:33:23  steve
+ *  Merge similar probes within a module.
+ *
  * Revision 1.6  2000/04/18 04:50:20  steve
  *  Clean up unneeded NetEvent objects.
  *

netlist.cc

@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #if !defined(WINNT) && !defined(macintosh)
-#ident "$Id: netlist.cc,v 1.126 2000/05/19 01:43:16 steve Exp $"
+#ident "$Id: netlist.cc,v 1.127 2000/05/27 19:33:23 steve Exp $"
 #endif
 
 # include  <cassert>
@@ -165,6 +165,11 @@ void Link::unlink()
       next_ = prev_ = this;
 }
 
+bool Link::is_equal(const Link&that) const
+{
+      return (node_ == that.node_) && (pin_ == that.pin_);
+}
+
 bool Link::is_linked() const
 {
       return next_ != this;
@@ -399,12 +404,39 @@ const Link& NetObj::pin(unsigned idx) const
       return pins_[idx];
 }
 
+NetNode::NetNode(const string&n, unsigned npins)
+: NetObj(n, npins), node_next_(0), node_prev_(0), design_(0)
+{
+}
+
 NetNode::~NetNode()
 {
       if (design_)
 	    design_->del_node(this);
 }
 
+NetNode* NetNode::next_node()
+{
+      for (Link*pin0 = pin(0).next_link()
+		 ; *pin0 != pin(0) ;  pin0 = pin0->next_link()) {
+	    NetNode*cur = dynamic_cast<NetNode*>(pin0->get_obj());
+	    if (cur == 0)
+		  continue;
+	    if (cur->pin_count() != pin_count())
+		  continue;
+
+
+	    bool flag = true;
+	    for (unsigned idx = 0 ;  idx < pin_count() ;  idx += 1)
+		  flag = flag && pin(idx).is_linked(cur->pin(idx));
+
+	    if (flag == true)
+		  return cur;
+      }
+
+      return 0;
+}
+
 NetNet::NetNet(NetScope*s, const string&n, Type t, unsigned npins)
 : NetObj(n, npins), sig_next_(0), sig_prev_(0), scope_(s),
     type_(t), port_type_(NOT_A_PORT), msb_(npins-1), lsb_(0),
@@ -2604,6 +2636,9 @@ bool NetUDP::sequ_glob_(string input, char output)
 
 /*
  * $Log: netlist.cc,v $
+ * Revision 1.127  2000/05/27 19:33:23  steve
+ *  Merge similar probes within a module.
+ *
  * Revision 1.126  2000/05/19 01:43:16  steve
  *  Accept different widths for add operands.
  *

netlist.h

@@ -19,7 +19,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #if !defined(WINNT) && !defined(macintosh)
-#ident "$Id: netlist.h,v 1.138 2000/05/11 23:37:27 steve Exp $"
+#ident "$Id: netlist.h,v 1.139 2000/05/27 19:33:23 steve Exp $"
 #endif
 
 /*
@@ -160,8 +160,9 @@ class Link {
 	// Return true if this link is connected to any pin of r.
       bool is_linked(const NetObj&r) const;
 
-      bool is_equal(const Link&that) const
+	// Return true if this is the same pin of the same object of
-      { return (node_ == that.node_) && (pin_ == that.pin_); }
+	// that link.
+      bool is_equal(const Link&that) const;
 
 	// Return information about the object that this link is
 	// a part of.
@@ -205,11 +206,14 @@ class Link {
 class NetNode  : public NetObj {
 
     public:
-      explicit NetNode(const string&n, unsigned npins)
+      explicit NetNode(const string&n, unsigned npins);
-      : NetObj(n, npins), node_next_(0), node_prev_(0), design_(0) { }
 
       virtual ~NetNode();
 
+	// This method locates the next node that has all its pins
+	// connected to the same of my own pins.
+      NetNode*next_node();
+
       virtual void emit_node(ostream&, struct target_t*) const;
       virtual void dump_node(ostream&, unsigned) const;
 
@@ -1401,6 +1405,8 @@ class NetEvent : public LineInfo {
       NetScope* scope();
       const NetScope* scope() const;
 
+      NetEvent* find_similar_event();
+
     private:
       string name_;
 
@@ -1479,6 +1485,7 @@ class NetEvProbe  : public NetNode {
       ~NetEvProbe();
 
       edge_t edge() const;
+      NetEvent* event();
       const NetEvent* event() const;
 
       virtual void emit_node(ostream&, struct target_t*) const;
@@ -2575,6 +2582,9 @@ extern ostream& operator << (ostream&, NetNet::Type);
 
 /*
  * $Log: netlist.h,v $
+ * Revision 1.139  2000/05/27 19:33:23  steve
+ *  Merge similar probes within a module.
+ *
  * Revision 1.138  2000/05/11 23:37:27  steve
  *  Add support for procedural continuous assignment.
  *