Improving printouts of critical path.

src/base/abc/abcNtk.c

@@ -147,9 +147,8 @@ Abc_Ntk_t * Abc_NtkStartFrom( Abc_Ntk_t * pNtk, Abc_NtkType_t Type, Abc_NtkFunc_
         pNtkNew->vObjPerm = Vec_IntDup( pNtk->vObjPerm );
     pNtkNew->AndGateDelay = pNtk->AndGateDelay;
     // initialize logic level of the CIs
-    if ( pNtk->AndGateDelay != 0.0 && pNtk->ntkType != ABC_NTK_STRASH && Type == ABC_NTK_STRASH )
+    if ( pNtk->AndGateDelay != 0.0 && pNtk->pManTime != NULL && pNtk->ntkType != ABC_NTK_STRASH && Type == ABC_NTK_STRASH )
     {
-        assert( pNtk->pManTime != NULL ); // timing info should be available
         Abc_NtkForEachCi( pNtk, pObj, i )
             pObj->pCopy->Level = (int)(Abc_NodeReadArrivalAve(pObj) / pNtk->AndGateDelay);
     }

src/base/abci/abcPrint.c

@@ -849,10 +849,15 @@ void Abc_NtkPrintLevel( FILE * pFile, Abc_Ntk_t * pNtk, int fProfile, int fListN
         memset( pLevelCounts, 0, sizeof(int) * nIntervals );
         Abc_NtkForEachCo( pNtk, pNode, i )
         {
+            if ( Abc_ObjIsNode(Abc_ObjFanin0(pNode)) && Abc_ObjFaninNum(Abc_ObjFanin0(pNode)) == 0 )
+                DelayInt = 0;
+            else
+            {
                 DelayCur  = Abc_NodeReadArrival( Abc_ObjFanin0(pNode) )->Worst;
                 DelayInt  = (int)(DelayCur / DelayDelta);
                 if ( DelayInt >= nIntervals )
                     DelayInt = nIntervals - 1;
+            }
             pLevelCounts[DelayInt]++;
         }
 

src/base/abci/abcTiming.c

@@ -881,38 +881,68 @@ float Abc_NtkDelayTrace( Abc_Ntk_t * pNtk, Abc_Obj_t * pOut, Abc_Obj_t * pIn, in
         // traverse to determine the critical path
         Abc_NtkIncrementTravId( pNtk );
         if ( !Abc_NtkDelayTraceCritPath_rec( vSlacks, Abc_ObjFanin0(pOut), pIn, vBest ) )
-            printf( "There is no combinational path between PO \"%s\" and PI \"%s\".\n", Abc_ObjName(pOut), Abc_ObjName(pIn) );
+        {
+            if ( pIn == NULL )
+                printf( "The logic cone of PO \"%s\" has no primary inputs.\n", Abc_ObjName(pOut) );
+            else
+                printf( "There is no combinational path between PI \"%s\" and PO \"%s\".\n", Abc_ObjName(pIn), Abc_ObjName(pOut) );
+        }
         else
         {
+            float Slack = 0.0;
+            int k, iFanin, Length = 0;
+            Abc_Obj_t * pFanin;
             // collect the critical path
             Abc_NtkDelayTraceCritPathCollect_rec( vSlacks, Abc_ObjFanin0(pOut), vBest, vPath );
             if ( pIn == NULL )
                 pIn = (Abc_Obj_t *)Vec_PtrEntry( vPath, 0 );
+            // find the longest gate name
+            Vec_PtrForEachEntry( Abc_Obj_t *, vPath, pNode, i )
+                if ( Abc_ObjIsNode(pNode) )
+                    Length = Abc_MaxInt( Length, strlen(Mio_GateReadName((Mio_Gate_t *)pNode->pData)) );
             // print critical path
-            printf( "Critical path to PO \"%s\" from PI \"%s\":\n", Abc_ObjName(pOut), Abc_ObjName(pIn) ); 
-            Vec_PtrForEachEntryReverse( Abc_Obj_t *, vPath, pNode, i )
+            printf( "Critical path from PI \"%s\" to PO \"%s\":\n", Abc_ObjName(pIn), Abc_ObjName(pOut) ); 
+            Vec_PtrForEachEntry( Abc_Obj_t *, vPath, pNode, i )
             {
-            
-                printf( "Obj =%7d.  ", Abc_ObjId(pNode) );
-                printf( "Lev =%4d.  ", Abc_ObjLevel(pNode) );
-                printf( "  " );
-                printf( "Rise =%6.1f. ", Abc_NodeReadArrival(pNode)->Rise );
-                printf( "Fall =%6.1f. ", Abc_NodeReadArrival(pNode)->Fall );
-                printf( "  " );
+                printf( "Level %3d : ", Abc_ObjLevel(pNode) );
                 if ( Abc_ObjIsCi(pNode) )
-                    printf( "Primary input \"%s\".", Abc_ObjName(pNode) );
-                else if ( Abc_ObjIsCo(pNode) )
-                    printf( "Primary output \"%s\".", Abc_ObjName(pNode) );
+                {
+                    printf( "Primary input \"%s\".   ", Abc_ObjName(pNode) );
+                    printf( "Arrival time =%6.1f. ", Abc_NodeReadArrival(pNode)->Worst );
+                    printf( "\n" );
+                    continue;
+                }
+                if ( Abc_ObjIsCo(pNode) )
+                {
+                    printf( "Primary output \"%s\".   ", Abc_ObjName(pNode) );
+                    printf( "Arrival =%6.1f. ", Abc_NodeReadArrival(pNode)->Worst );
+                }
                 else
                 {
-                    int iFanin;
                     assert( Abc_ObjIsNode(pNode) );
                     iFanin = Abc_NodeFindFanin( pNode, (Abc_Obj_t *)Vec_PtrEntry(vPath,i-1) );
-                    printf( "Slack =%6.1f.  ", Abc_NtkDelayTraceSlack(vSlacks, pNode, iFanin) );
-                    printf( "Mapping:  Pin = %d. Gate = %s. ", iFanin, Mio_GateReadName(pNode->pData) );
+                    Slack = Abc_NtkDelayTraceSlack(vSlacks, pNode, iFanin);
+                    printf( "%10s/", Abc_ObjName(pNode) );
+                    printf( "%-4s", Mio_GateReadPinName((Mio_Gate_t *)pNode->pData, iFanin) );
+                    printf( " (%s)", Mio_GateReadName((Mio_Gate_t *)pNode->pData) );
+                    for ( k = strlen(Mio_GateReadName((Mio_Gate_t *)pNode->pData)); k < Length; k++ )
+                        printf( " " );
+                    printf( "   " );
+                    printf( "Arrival =%6.1f.   ", Abc_NodeReadArrival(pNode)->Worst );
+                    printf( "I/O time: (" );
+                    Abc_ObjForEachFanin( pNode, pFanin, k )
+                        printf( "%s%.1f", (k? ", ":""), Abc_NodeReadArrival(pFanin)->Worst );
+                    if ( Abc_NodeReadRequired(pNode)->Worst == -ABC_INFINITY )
+                        printf( " -> ?)" );
+                    else
+                        printf( " -> %.1f)", Abc_NodeReadRequired(pNode)->Worst );
                 }
                 printf( "\n" );
             }
+            printf( "Level %3d : ", Abc_ObjLevel(Abc_ObjFanin0(pOut)) + 1 );
+            printf( "Primary output \"%s\".   ", Abc_ObjName(pOut) );
+            printf( "Required time = %6.1f.  ", Abc_NodeRequired(pOut)->Worst );
+            printf( "Path slack = %6.1f.\n", Slack );
         }
         Vec_PtrFree( vPath );
         Vec_IntFree( vBest );

src/map/mio/mio.h

@@ -115,6 +115,7 @@ extern double            Mio_GateReadDelayMax      ( Mio_Gate_t * pGate );
 extern char *            Mio_GateReadSop           ( Mio_Gate_t * pGate );      
 extern word              Mio_GateReadTruth         ( Mio_Gate_t * pGate );
 extern int               Mio_GateReadValue         ( Mio_Gate_t * pGate );
+extern char *            Mio_GateReadPinName       ( Mio_Gate_t * pGate, int iPin );
 extern void              Mio_GateSetValue          ( Mio_Gate_t * pGate, int Value );
 extern char *            Mio_PinReadName           ( Mio_Pin_t * pPin );  
 extern Mio_PinPhase_t    Mio_PinReadPhase          ( Mio_Pin_t * pPin );  

src/map/mio/mioApi.c

@@ -173,6 +173,27 @@ double            Mio_PinReadDelayFanoutFall( Mio_Pin_t * pPin )      { return p
 double            Mio_PinReadDelayBlockMax  ( Mio_Pin_t * pPin )      { return pPin->dDelayBlockMax;          }
 Mio_Pin_t *       Mio_PinReadNext           ( Mio_Pin_t * pPin )      { return pPin->pNext;           }
 
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+char * Mio_GateReadPinName( Mio_Gate_t * pGate, int iPin )
+{
+    Mio_Pin_t * pPin;
+    int i = 0;
+    Mio_GateForEachPin( pGate, pPin )
+        if ( i++ == iPin )
+            return Mio_PinReadName(pPin);
+    return NULL;
+}
+
 ////////////////////////////////////////////////////////////////////////
 ///                       END OF FILE                                ///
 ////////////////////////////////////////////////////////////////////////