Suppress wrong errors/warnings in AnabaticEngine & AutoSegment.

* Bug: In Anabatic::AutoHorizontal & AutoVertical, in getGCells()
    method, do not display the "NULL GCell under" error message if the
    segment has just been created. It could on a "wrong" axis position
    so the line probing method may fail.
* Bug: In AnabaticEngine CTOR, if the "blockagenet" is created there,
    do not forget to set it's type to BLOCKAGE (to avoid later warnings).
* Bug: In Anabatic::NetBuilder::_load(), do not display a warning if the
    blockage net has no RoutingPads (it *must* not have one).

anabatic/src/AnabaticEngine.cpp

@@ -338,7 +338,10 @@ namespace Anabatic {
     _matrix.setCell( cell, _configuration->getSliceHeight() );
     Edge::unity = _configuration->getSliceHeight();
 
-    if (not _blockageNet) _blockageNet = Net::create( cell, "blockagenet" );
+    if (not _blockageNet) {
+      _blockageNet = Net::create( cell, "blockagenet" );
+      _blockageNet->setType( Net::Type::BLOCKAGE );
+    }
   }
 
 

anabatic/src/AutoHorizontal.cpp

@@ -224,6 +224,7 @@ namespace Anabatic {
       gcell = gcell->getEast( yprobe );
       if (not gcell) {
         success = false;
+        if (not isCreated()) {
           cerr << Error( "AutoHorizontal::getGCells() : NULL GCell under %s\n"
                          "        begin:%s\n"
                          "        end:  %s"
@@ -231,6 +232,7 @@ namespace Anabatic {
                        , getString(getAutoSource()->getGCell()).c_str()
                        , getString(getAutoTarget()->getGCell()).c_str()
                        ) << endl;
+        }
         break;
       }
 

anabatic/src/AutoVertical.cpp

@@ -218,6 +218,7 @@ namespace Anabatic {
 
       if (not gcell) {
         success = false;
+        if (not isCreated()) {
           cerr << Error( "AutoVertical::getGCells() : NULL GCell under %s\n"
                          "        begin:%s\n"
                          "        end:  %s"
@@ -225,6 +226,7 @@ namespace Anabatic {
                        , getString(getAutoSource()->getGCell()).c_str()
                        , getString(getAutoTarget()->getGCell()).c_str()
                        ) << endl;
+        }
         break;
       }
 

anabatic/src/NetBuilder.cpp

@@ -2327,8 +2327,10 @@ namespace Anabatic {
     size_t       degree        = routingPads.getSize();
 
     if (degree == 0) {
+      if (not net->isBlockage()) {
         cmess2 << Warning( "Net \"%s\" do not have any RoutingPad (ignored)."
                          , getString(net->getName()).c_str() ) << endl;
+      }
       cdebug_tabw(145,-1);
       return;
     }