Version abc80327

5 files changed, 313 insertions, 9 deletions

diff --git a/src/map/if/if.h b/src/map/if/if.h
index d42dd0af..d97a1154 100644
--- a/src/map/if/if.h
+++ b/src/map/if/if.h
@@ -245,8 +245,9 @@ static inline If_Obj_t * If_ManObj( If_Man_t * p, int i )                    { r
 static inline int        If_ObjIsConst1( If_Obj_t * pObj )                   { return pObj->Type == IF_CONST1;       }
 static inline int        If_ObjIsCi( If_Obj_t * pObj )                       { return pObj->Type == IF_CI;           }
 static inline int        If_ObjIsCo( If_Obj_t * pObj )                       { return pObj->Type == IF_CO;           }
-//static inline int        If_ObjIsPi( If_Obj_t * pObj )                       { return If_ObjIsCi(pObj) && pObj->pFanin0 == NULL; }
-static inline int        If_ObjIsLatch( If_Obj_t * pObj )                    { return If_ObjIsCi(pObj) && pObj->pFanin0 != NULL; }
+static inline int        If_ObjIsTerm( If_Obj_t * pObj )                     { return pObj->Type == IF_CI || pObj->Type == IF_CO; }
+//static inline int        If_ObjIsPi( If_Obj_t * pObj )                       { return If_ObjIsCi(pObj) && pObj->pFanin0 == NULL;  }
+static inline int        If_ObjIsLatch( If_Obj_t * pObj )                    { return If_ObjIsCi(pObj) && pObj->pFanin0 != NULL;  }
 static inline int        If_ObjIsAnd( If_Obj_t * pObj )                      { return pObj->Type == IF_AND;          }
 
 static inline If_Obj_t * If_ObjFanin0( If_Obj_t * pObj )                     { return pObj->pFanin0;                 }
@@ -402,6 +403,8 @@ extern int             If_ManCrossCut( If_Man_t * p );
 extern Vec_Ptr_t *     If_ManReverseOrder( If_Man_t * p );
 extern void            If_ManMarkMapping( If_Man_t * p );
 extern Vec_Ptr_t *     If_ManCollectMappingDirect( If_Man_t * p );
+extern Vec_Int_t *     If_ManCollectMappingInt( If_Man_t * p );
+
 
 extern int             If_ManCountSpecialPos( If_Man_t * p );
 
diff --git a/src/map/if/ifLib.c b/src/map/if/ifLib.c
new file mode 100644
index 00000000..2089ca3c
--- /dev/null
+++ b/src/map/if/ifLib.c
@@ -0,0 +1,273 @@
+/**CFile****************************************************************
+
+  FileName    [ifLib.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [FPGA mapping based on priority cuts.]
+
+  Synopsis    [LUT library.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - November 21, 2006.]
+
+  Revision    [$Id: ifLib.c,v 1.00 2006/11/21 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "if.h"
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+static inline char * If_UtilStrsav( char *s ) {  return !s ? s : strcpy(ALLOC(char, strlen(s)+1), s);  }
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    [Reads the description of LUTs from the LUT library file.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+If_Lib_t * If_LutLibRead( char * FileName )
+{
+    char pBuffer[1000], * pToken;
+    If_Lib_t * p;
+    FILE * pFile;
+    int i, k;
+
+    pFile = fopen( FileName, "r" );
+    if ( pFile == NULL )
+    {
+        printf( "Cannot open LUT library file \"%s\".\n", FileName );
+        return NULL;
+    }
+
+    p = ALLOC( If_Lib_t, 1 );
+    memset( p, 0, sizeof(If_Lib_t) );
+    p->pName = If_UtilStrsav( FileName );
+
+    i = 1;
+    while ( fgets( pBuffer, 1000, pFile ) != NULL )
+    {
+        pToken = strtok( pBuffer, " \t\n" );
+        if ( pToken == NULL )
+            continue;
+        if ( pToken[0] == '#' )
+            continue;
+        if ( i != atoi(pToken) )
+        {
+            printf( "Error in the LUT library file \"%s\".\n", FileName );
+            free( p );
+            return NULL;
+        }
+
+        // read area
+        pToken = strtok( NULL, " \t\n" );
+        p->pLutAreas[i] = (float)atof(pToken);
+
+        // read delays
+        k = 0;
+        while ( pToken = strtok( NULL, " \t\n" ) )
+            p->pLutDelays[i][k++] = (float)atof(pToken);
+
+        // check for out-of-bound
+        if ( k > i )
+        {
+            printf( "LUT %d has too many pins (%d). Max allowed is %d.\n", i, k, i );
+            return NULL;
+        }
+
+        // check if var delays are specifies
+        if ( k > 1 )
+            p->fVarPinDelays = 1;
+
+        if ( i == IF_MAX_LUTSIZE )
+        {
+            printf( "Skipping LUTs of size more than %d.\n", i );
+            return NULL;
+        }
+        i++;
+    }
+    p->LutMax = i-1;
+
+    // check the library
+    if ( p->fVarPinDelays )
+    {
+        for ( i = 1; i <= p->LutMax; i++ )
+            for ( k = 0; k < i; k++ )
+            {
+                if ( p->pLutDelays[i][k] <= 0.0 )
+                    printf( "Warning: Pin %d of LUT %d has delay %f. Pin delays should be non-negative numbers. Technology mapping may not work correctly.\n", 
+                        k, i, p->pLutDelays[i][k] );
+                if ( k && p->pLutDelays[i][k-1] > p->pLutDelays[i][k] )
+                    printf( "Warning: Pin %d of LUT %d has delay %f. Pin %d of LUT %d has delay %f. Pin delays should be in non-decreasing order. Technology mapping may not work correctly.\n", 
+                        k-1, i, p->pLutDelays[i][k-1], 
+                        k, i, p->pLutDelays[i][k] );
+            }
+    }
+    else
+    {
+        for ( i = 1; i <= p->LutMax; i++ )
+        {
+            if ( p->pLutDelays[i][0] <= 0.0 )
+                printf( "Warning: LUT %d has delay %f. Pin delays should be non-negative numbers. Technology mapping may not work correctly.\n", 
+                    k, i, p->pLutDelays[i][0] );
+        }
+    }
+
+    return p;
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Duplicates the LUT library.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+If_Lib_t * If_LutLibDup( If_Lib_t * p )
+{
+    If_Lib_t * pNew;
+    pNew = ALLOC( If_Lib_t, 1 );
+    *pNew = *p;
+    pNew->pName = If_UtilStrsav( pNew->pName );
+    return pNew;
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Frees the LUT library.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void If_LutLibFree( If_Lib_t * pLutLib )
+{
+    if ( pLutLib == NULL )
+        return;
+    FREE( pLutLib->pName );
+    FREE( pLutLib );
+}
+
+
+/**Function*************************************************************
+
+  Synopsis    [Prints the LUT library.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void If_LutLibPrint( If_Lib_t * pLutLib )
+{
+    int i, k;
+    printf( "# The area/delay of k-variable LUTs:\n" );
+    printf( "# k    area     delay\n" );
+    if ( pLutLib->fVarPinDelays )
+    {
+        for ( i = 1; i <= pLutLib->LutMax; i++ )
+        {
+            printf( "%d   %7.2f  ", i, pLutLib->pLutAreas[i] );
+            for ( k = 0; k < i; k++ )
+                printf( " %7.2f", pLutLib->pLutDelays[i][k] );
+            printf( "\n" );
+        }
+    }
+    else
+        for ( i = 1; i <= pLutLib->LutMax; i++ )
+            printf( "%d   %7.2f   %7.2f\n", i, pLutLib->pLutAreas[i], pLutLib->pLutDelays[i][0] );
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Returns 1 if the delays are discrete.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int If_LutLibDelaysAreDiscrete( If_Lib_t * pLutLib )
+{
+    float Delay;
+    int i;
+    for ( i = 1; i <= pLutLib->LutMax; i++ )
+    {
+        Delay = pLutLib->pLutDelays[i][0];
+        if ( ((float)((int)Delay)) != Delay )
+            return 0;
+    }
+    return 1;
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Sets simple LUT library.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+If_Lib_t * If_SetSimpleLutLib( int nLutSize )
+{
+    If_Lib_t s_LutLib10= { "lutlib",10, 0, {0,1,1,1,1,1,1,1,1,1,1}, {{0},{1},{1},{1},{1},{1},{1},{1},{1},{1},{1}} };
+    If_Lib_t s_LutLib9 = { "lutlib", 9, 0, {0,1,1,1,1,1,1,1,1,1}, {{0},{1},{1},{1},{1},{1},{1},{1},{1},{1}} };
+    If_Lib_t s_LutLib8 = { "lutlib", 8, 0, {0,1,1,1,1,1,1,1,1}, {{0},{1},{1},{1},{1},{1},{1},{1},{1}} };
+    If_Lib_t s_LutLib7 = { "lutlib", 7, 0, {0,1,1,1,1,1,1,1}, {{0},{1},{1},{1},{1},{1},{1},{1}} };
+    If_Lib_t s_LutLib6 = { "lutlib", 6, 0, {0,1,1,1,1,1,1}, {{0},{1},{1},{1},{1},{1},{1}} };
+    If_Lib_t s_LutLib5 = { "lutlib", 5, 0, {0,1,1,1,1,1}, {{0},{1},{1},{1},{1},{1}} };
+    If_Lib_t s_LutLib4 = { "lutlib", 4, 0, {0,1,1,1,1}, {{0},{1},{1},{1},{1}} };
+    If_Lib_t s_LutLib3 = { "lutlib", 3, 0, {0,1,1,1}, {{0},{1},{1},{1}} };
+    If_Lib_t * pLutLib;
+    assert( nLutSize >= 3 && nLutSize <= 10 );
+    switch ( nLutSize )
+    {
+        case 3:  pLutLib = &s_LutLib3; break;
+        case 4:  pLutLib = &s_LutLib4; break;
+        case 5:  pLutLib = &s_LutLib5; break;
+        case 6:  pLutLib = &s_LutLib6; break;
+        case 7:  pLutLib = &s_LutLib7; break;
+        case 8:  pLutLib = &s_LutLib8; break;
+        case 9:  pLutLib = &s_LutLib9; break;
+        case 10: pLutLib = &s_LutLib10; break;
+        default: pLutLib = NULL; break;
+    }
+    if ( pLutLib == NULL )
+        return NULL;
+    return If_LutLibDup(pLutLib);
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
diff --git a/src/map/if/ifMap.c b/src/map/if/ifMap.c
index fafd454d..81521abf 100644
--- a/src/map/if/ifMap.c
+++ b/src/map/if/ifMap.c
@@ -295,13 +295,6 @@ int If_ManPerformMappingRound( If_Man_t * p, int nCutsUsed, int Mode, int fPrepr
             {
                 arrTime = Tim_ManGetPiArrival( p->pManTim, pObj->IdPio );
                 If_ObjSetArrTime( pObj, arrTime );
-/*
-    if ( pObj->IdPio >= 2000 )
-    {
-        int x = 0;
-        printf( "+%d %6.3f  ", pObj->IdPio, arrTime );
-    }
-*/
             }
             else if ( If_ObjIsCo(pObj) )
             {
diff --git a/src/map/if/ifUtil.c b/src/map/if/ifUtil.c
index c114236d..74880409 100644
--- a/src/map/if/ifUtil.c
+++ b/src/map/if/ifUtil.c
@@ -653,6 +653,40 @@ Vec_Ptr_t * If_ManCollectMappingDirect( If_Man_t * p )
 
 /**Function*************************************************************
 
+  Synopsis    [Collects nodes used in the mapping in the topological order.]
+
+  Description [Represents mapping as an array of integers.]
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Vec_Int_t * If_ManCollectMappingInt( If_Man_t * p )
+{
+    Vec_Int_t * vOrder;
+    If_Cut_t * pCutBest;
+    If_Obj_t * pObj;
+    int i, k, nLeaves, * ppLeaves;
+    If_ManMarkMapping( p );
+    vOrder = Vec_IntAlloc( If_ManObjNum(p) );
+    If_ManForEachObj( p, pObj, i )
+        if ( If_ObjIsAnd(pObj) && pObj->nRefs )
+        {
+            pCutBest = If_ObjCutBest( pObj );
+            nLeaves  = If_CutLeaveNum( pCutBest ); 
+            ppLeaves = If_CutLeaves( pCutBest );
+            // save the number of leaves, the leaves, and finally, the root
+            Vec_IntPush( vOrder, nLeaves );
+            for ( k = 0; k < nLeaves; k++ )
+                Vec_IntPush( vOrder, ppLeaves[k] );
+            Vec_IntPush( vOrder, pObj->Id );
+        }
+    return vOrder;
+}
+
+/**Function*************************************************************
+
   Synopsis    [Returns the number of POs pointing to the same internal nodes.]
 
   Description []
diff --git a/src/map/if/module.make b/src/map/if/module.make
index c14428da..7489d3b4 100644
--- a/src/map/if/module.make
+++ b/src/map/if/module.make
@@ -1,5 +1,6 @@
 SRC +=  src/map/if/ifCore.c \
     src/map/if/ifCut.c \
+    src/map/if/ifLib.c \
     src/map/if/ifMan.c \
     src/map/if/ifMap.c \
     src/map/if/ifReduce.c \