new margin administration ...

we now try to insert the maximum amount of 2-pitch tie cells
to have the maximum amount of bodie-ties

alliance/src/ocp/src/placer/Ocp.cpp

@@ -25,6 +25,8 @@ Usage()
 	 << "  in percentage of the cells area. " << endl
 	 << "  The resulting area will be equal to " << endl
 	 << "  CELL_AREA * (1 + <MARGIN>). Default value : 0.2" << endl
+	 << "o -eqmargin : The margin is equitably distributed between all cells" << endl
+	 << "  By default, we try to insert the maximum amount of 2-pitch tie cells" << endl
 	 << "o -partial <PARTIAL> : " << endl
 	 << "  The design is already partially placed (there must be a" << endl
 	 << "  physical view describing this partial placement)." << endl
@@ -52,6 +54,8 @@ main(int argc, char **argv)
     bool		RingFlg			= false; // Connectors
     bool		IocFlg			= false; // file for Connectors
     bool		VerboseFlg		= false; // verbose mode
+    bool		EqMarginFlg		= false; // don't try to maximise
+    							 // 2-pitch cells
     double		NetMult			= 0.8 ;
     double		BinMult			= 0.1 ;
     double		RowMult			= 0.1 ;
@@ -70,50 +74,53 @@ main(int argc, char **argv)
 	Usage();
 	exit(0);
     }
-    
-       for (int i=1; i<argc; i++) {
-            if (!strcmp (argv[i], "-help")) {
-	      HelpFlg = true;
-	    }
-	    
-	    else
-	    
-	    if (!strcmp (argv[i], "-v")) {
-	      if (i+2 < argc) VerboseFlg = true;
-	      else	      UsageFlg = true;
-	    }
-	    
-	    else
-	    
 
-	    if (!strcmp (argv[i], "-gnuplot")) {
-	      if (i+2 < argc) PlotFlg = true;
-	      else	      UsageFlg = true;
+    for (int i=1; i<argc; i++)
+    {
+	if (!strcmp (argv[i], "-help"))
+	{
+	    HelpFlg = true;
+	}
+	else
+	    if (!strcmp (argv[i], "-v"))
+	    {
+		if (i+2 < argc) VerboseFlg = true;
+		else	      UsageFlg = true;
 	    }
-	    
 	    else
-	    
-	      if (!strcmp (argv[i], "-c")) {
-	      if (i+2 < argc) ConFlg = true;
-	      else	      UsageFlg = true;
-	    }
-
-	      else
-		  if (!strcmp (argv[i], "-ring")) {
-		      if (i+2 < argc) RingFlg = true;
-		      else UsageFlg = true;
-		  }
-	    
-	    else
-            
-	    if (!strcmp (argv[i], "-r")) {
-	      if (i+3 < argc)
-	      {
-                if (!sscanf(argv[i+1], "%lg", &BBoxOccCostRatio))
+		if (!strcmp (argv[i], "-eqmargin"))
 		{
-	    	  cout << "WARNING : invalid argument for -r" << endl;
-		  UsageFlg = true;
+		    if (i+2 < argc) EqMarginFlg = true;
+		    else	      UsageFlg = true;
 		}
+		else
+		    if (!strcmp (argv[i], "-gnuplot"))
+		    {
+			if (i+2 < argc) PlotFlg = true;
+			else	      UsageFlg = true;
+		    }
+		    else
+			if (!strcmp (argv[i], "-c"))
+			{
+			    if (i+2 < argc) ConFlg = true;
+			    else	      UsageFlg = true;
+			}
+			else
+			    if (!strcmp (argv[i], "-ring"))
+			    {
+				if (i+2 < argc) RingFlg = true;
+				else UsageFlg = true;
+			    }
+			    else
+				if (!strcmp (argv[i], "-r"))
+				{
+				    if (i+3 < argc)
+				    {
+					if (!sscanf(argv[i+1], "%lg", &BBoxOccCostRatio))
+					{
+					    cout << "WARNING : invalid argument for -r" << endl;
+					    UsageFlg = true;
+					}
 	      } else {
 	    	cout << "WARNING : no file or argument given" << endl;
 		UsageFlg = true;
@@ -318,7 +325,8 @@ main(int argc, char **argv)
     // On fait le placement
     // ********************
     PPlacement Placement(ConFlg, RingFlg, RowMult, BinMult, NetMult,
-	IocFlg, IocFile,PlotFlg, VerboseFlg,PartialFlg,physicalfig, namefile);
+	IocFlg, IocFile, PlotFlg, VerboseFlg, PartialFlg, EqMarginFlg,
+	physicalfig, namefile);
     Placement.SetMargin(Margin);
     Placement.SetMaxDetLoop(MaxDetLoop);
     if (!RowFlg)

alliance/src/ocp/src/placer/PDetSubRow.cpp

@@ -33,7 +33,7 @@ PDetSubRow::PDetSubRow(PSubRow& subrow):
 }
 
 void
-PDetSubRow::ExpandInstances()
+PDetSubRow::ExpandInstances(const bool eqmargin)
 {
     unsigned nins = _detInsVector.size();
     double totalinssize = 0;
@@ -43,10 +43,26 @@ PDetSubRow::ExpandInstances()
     {
 	totalinssize += iit->GetWidth();
     }
+    //xtof: 06 05 2002
+    //changing the white space repartition
+    //We want the maximum 2-pitch spaces for bodie-tie insertion
+    
     double whitespace = GetWidth() - totalinssize;
-    double inswhitespace = (double)(int)(whitespace / nins);
-    double whitespaceremain = (double)(int)(whitespace
-	    - nins * inswhitespace + 0.5);
+    double inswhitespace = 0.0;
+    double whitespaceremain = 0.0;
+    if (eqmargin)
+    {
+	inswhitespace = (double)(int)(whitespace / nins);
+	whitespaceremain = (double)(int)(whitespace
+		- nins * inswhitespace + 0.5);
+    }
+    else
+    {
+	inswhitespace = (double)(int)(whitespace / (2 * nins));
+	inswhitespace *= 2;
+	whitespaceremain = (double)(int)(whitespace
+		- nins * inswhitespace + 0.5);
+    }
     for (PDetInsVector::iterator iit = _detInsVector.begin();
 	    iit != _detInsVector.end();
 	    iit++)
@@ -54,9 +70,24 @@ PDetSubRow::ExpandInstances()
 	iit->SetMarginWidth(iit->GetWidth() + inswhitespace);
     }
     PDetInsVector::iterator iit = _detInsVector.begin();
-    while (whitespaceremain-- > 0)
+    if (eqmargin)
     {
-	(iit++)->AddWhiteSpace();
+	while (whitespaceremain-- > 0.0)
+	{
+	    (iit++)->AddWhiteSpace();
+	}
+    }
+    else
+    {
+	while (whitespaceremain >= 2.0)
+	{
+	    (iit++)->AddDoubleWhiteSpace();
+	    whitespaceremain -= 2.0;
+	}
+	if (whitespaceremain > 0.0)
+	{
+	    (iit)->AddWhiteSpace();
+	}
     }
     
     double XPos = GetMinX();

alliance/src/ocp/src/placer/PDetSubRow.h

@@ -25,7 +25,7 @@ class PDetSubRow : public PContainer {
     bool		GetOrientation() const		{ return _orientation; }
     PDetInsVector&	GetInssVector() 		{ return _detInsVector; }
     const PDetInsVector& GetConstInssVector() const		{ return _detInsVector; }
-    void		ExpandInstances();
+    void		ExpandInstances(const bool eqmargin);
     bool		FinalOptimize();
     ostream&	Print(ostream& os) const;
     ofstream&	Plot(ofstream& out) const;

alliance/src/ocp/src/placer/PDetToPlaceIns.h

@@ -28,6 +28,7 @@ class PDetToPlaceIns : public PIns {
     double		GetLeftCornerX() const			{ return _leftCorner.GetX(); }
     void		SetSubRow(PDetSubRow* subrow)		{ _subRow = subrow; }
     void		AddWhiteSpace()				{ ++_marginWidth; }
+    void		AddDoubleWhiteSpace()			{ _marginWidth += 2; }
     void		UnPlace()				{ _placed = false; }
     void		Place()					{ _placed = true; }
     bool		IsPlaced() const			{ return _placed; }

alliance/src/ocp/src/placer/PPlacement.h

@@ -85,6 +85,7 @@ class PPlacement {
 	bool		_boolPlot;
 	bool		_verbose;
 	bool		_prePlace;
+	bool		_eqMargin;
 	unsigned	_totalMoves;
 
 	// Placement caracteristics
@@ -110,12 +111,13 @@ class PPlacement {
     public:
 	PPlacement(bool conflg, bool ringflg, double rowmult, double binmult, double netmult,
 		bool iocfile, char *iocfilename, bool plotflg,
-		bool verbose, bool preflg, struct phfig* physfig,
+		bool verbose, bool preflg, bool eqmargin,
+		struct phfig* physfig,
 		char* filename):
 	    _prePlaceFig(physfig),
 	RowMult(rowmult), BinMult(binmult), NetMult(netmult),
 	_placeCons(conflg), _ringPlaceCons(ringflg), _iocFile(iocfile), _iocFileName(iocfilename),
-	_boolPlot(plotflg), _verbose(verbose), _prePlace(preflg),
+	_boolPlot(plotflg), _verbose(verbose), _prePlace(preflg), _eqMargin(eqmargin),
 	_totalMoves(0),_fileName(filename)
 	{}
 

alliance/src/ocp/src/placer/PPlacementFinal.cpp

@@ -63,9 +63,6 @@ PPlacement::PlaceFinal()
     }
 }
 
-// ======================================================================
-// double FinalInitialize()
-// ======================================================================
 void
 PPlacement::FinalInitialize()
 {
@@ -149,7 +146,7 @@ PPlacement::FinalInitialize()
     for (PDetSubRows::iterator dsrit = _detSubRows.begin();
 	    dsrit != _detSubRows.end(); dsrit++)
     {
-	dsrit->ExpandInstances();
+	dsrit->ExpandInstances(_eqMargin);
     }
 
     // Updating All _nets BBoxs
@@ -305,7 +302,7 @@ int PPlacement::AddRowend(struct phfig* physicalfig)
     long width = (long) ((insfig->XAB2 - insfig->XAB1) / PITCH);
     long height = (long) ((insfig->YAB2 - insfig->YAB1) / (PITCH * ROWHEIGHT));
     long posx = (long) ((It->XINS - _dx) / PITCH);
-    long posy = (long)((It->YINS - _dy)/ (PITCH * ROWHEIGHT));
+    long posy = (long)((It->YINS - _dy) / (PITCH * ROWHEIGHT));
 
     for (long ydecal=0 ; ydecal < height ; ydecal++)
     {