Bug fix, In Katana, do not remove AutoSegment conflicting with blockages.

* Bug: In Katana::NegociateWindow::createTrackSegment(), *fixed* AutoSegment
    in conflict with blockage where removeds. This was creating "holes"
    in the Anabatic articulated segment structure. Now just *don't*
    create the TrackSegment. Pass the regression tests, but not sure
    it is not generating problems elsewhere.
* New: AnabaticEngine::checkPlacement() to issue more clear errors about
    a defective placement.

anabatic/src/AnabaticEngine.cpp

@@ -349,6 +349,7 @@ namespace Anabatic {
     UpdateSession::open();
     GCell::create( this );
     UpdateSession::close();
+    checkPlacement();
   }
 
 
@@ -492,6 +493,39 @@ namespace Anabatic {
   }
 
 
+  bool  AnabaticEngine::checkPlacement () const
+  {
+    bool valid  = true;
+    Box  cellAb = getCell()->getAbutmentBox();
+    
+    for ( Occurrence occurrence : getCell()->getTerminalNetlistInstanceOccurrences() ) {
+      Instance* instance     = static_cast<Instance*>(occurrence.getEntity());
+      Cell*     masterCell   = instance->getMasterCell();
+      string    instanceName = occurrence.getCompactString();
+
+      instanceName.erase( 0, 1 );
+      instanceName.erase( instanceName.size()-1 );
+
+      Box instanceAb = masterCell->getAbutmentBox();
+
+      Transformation instanceTransf = instance->getTransformation();
+      occurrence.getPath().getTransformation().applyOn( instanceTransf );
+      instanceTransf.applyOn( instanceAb );
+
+      if (not cellAb.contains(instanceAb)) {
+        valid = false;
+        cerr << Error( "AnabaticEngine::checkPlacement(): Instance %s is outside top cell abutment box, routing will be incomplete.\n"
+                       "        (cell:%s vs instance:%s)"
+                     , instanceName.c_str()
+                     , getString(cellAb    ).c_str()
+                     , getString(instanceAb).c_str()
+                     ) << endl;
+      }
+    }
+    return valid;
+  }
+
+
   void  AnabaticEngine::openSession ()
   { Session::_open(this); }
 

anabatic/src/AutoContactTurn.cpp

@@ -88,8 +88,17 @@ namespace Anabatic {
 
   AutoSegment* AutoContactTurn::getPerpandicular ( const AutoSegment* reference ) const
   {
+    cdebug_log(149,0) << _getTypeName() << "::getPerpandicular() " << this
+                      << " to:" << reference << endl;
+    cdebug_log(149,0) << "| _horizontal1:" << _horizontal1 << endl;
+    cdebug_log(149,0) << "| _vertical1  :" << _vertical1   << endl;
+
     if (reference == _horizontal1) return _vertical1;
     if (reference == _vertical1  ) return _horizontal1;
+
+    cdebug_log(149,0) << _getTypeName() << "::getPerpandicular() " << this
+                      << " to:" << reference << " failed." << endl;
+
     return NULL;
   }
 
@@ -117,6 +126,9 @@ namespace Anabatic {
 
   void  AutoContactTurn::cacheDetach ( AutoSegment* segment )
   {
+    cdebug_log(149,0) << _getTypeName() << "::cacheDetach() " << this
+                      << " from:" << segment << endl;
+
     if      (segment == _horizontal1) _horizontal1 = NULL;
     else if (segment == _vertical1)   _vertical1   = NULL;
     else return;
@@ -127,6 +139,9 @@ namespace Anabatic {
 
   void  AutoContactTurn::cacheAttach ( AutoSegment* segment )
   {
+    cdebug_log(149,0) << _getTypeName() << "::cacheAttach() " << this
+                      << " to:" << segment << endl;
+
     if (segment->getDirection() == Flags::Horizontal) {
       if (_horizontal1) {
         cerr << Bug( "%s::cacheAttach() On %s,\n"

anabatic/src/AutoHorizontal.cpp

@@ -314,6 +314,9 @@ namespace Anabatic {
       isNonPrefSource = true;
       slackenSource   = true;
     }
+
+    cdebug_log(149,0) << "target:" << target << endl;
+    cdebug_log(149,0) << "target->getPerpandicular(this):" << target->getPerpandicular(this) << endl;
     if (target->isTurn() and (target->getPerpandicular(this)->getLayer() == getLayer())) {
       isNonPrefTarget = true;
       slackenTarget   = true;

anabatic/src/anabatic/AnabaticEngine.h

@@ -226,6 +226,7 @@ namespace Anabatic {
                     void              exclude                 ( const Name& netName );
                     void              exclude                 ( Net* );
                     void              updateMatrix            ();
+                    bool              checkPlacement          () const;
     // Dijkstra related functions.                            
       inline        int               getStamp                () const;
       inline        int               incStamp                ();

katana/src/NegociateWindow.cpp

@@ -352,7 +352,7 @@ namespace Katana {
 
       // Overlap between fixed & blockage.
         cdebug_log(159,0) << "* Blockage overlap: " << autoSegment << endl;
-        Session::destroyRequest( autoSegment );
+      //Session::destroyRequest( autoSegment );
 
         cerr << Warning( "Overlap between fixed %s and blockage at %s."
                        , getString(autoSegment).c_str()