From b581e16f32cd1ad68a65fd94d9f2b997da443721 Mon Sep 17 00:00:00 2001
From: Alan Mishchenko <alanmi@berkeley.edu>
Date: Thu, 20 Mar 2014 11:21:33 -0700
Subject: Experiments with cut caching.

---
 src/map/if/ifCache.c | 121 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 src/map/if/ifCache.c

(limited to 'src/map/if/ifCache.c')

diff --git a/src/map/if/ifCache.c b/src/map/if/ifCache.c
new file mode 100644
index 00000000..231e495c
--- /dev/null
+++ b/src/map/if/ifCache.c
@@ -0,0 +1,121 @@
+/**CFile****************************************************************
+
+  FileName    [ifCache.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [FPGA mapping based on priority cuts.]
+
+  Synopsis    []
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - November 21, 2006.]
+
+  Revision    [$Id: ifCache.c,v 1.00 2006/11/21 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "if.h"
+#include "misc/vec/vecHsh.h"
+
+ABC_NAMESPACE_IMPL_START
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+ 
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void If_ManCacheRecord( If_Man_t * p, int iDsd0, int iDsd1, int nShared, int iDsd )
+{
+    if ( p->vCutData == NULL )
+        p->vCutData = Vec_IntAlloc( 10000 );
+    if ( iDsd0 > iDsd1 )
+        ABC_SWAP( int, iDsd0, iDsd1 );
+    Vec_IntPush( p->vCutData, iDsd0 );
+    Vec_IntPush( p->vCutData, iDsd1 );
+    Vec_IntPush( p->vCutData, nShared );
+    Vec_IntPush( p->vCutData, iDsd );
+//    printf( "%6d %6d %6d %6d\n", iDsd0, iDsd1, nShared, iDsd );
+}
+  
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+static inline int Vec_IntCountUnique( Vec_Int_t * p )
+{
+    int i, Count = 0, Max = Vec_IntFindMax(p);
+    unsigned char * pPres = ABC_CALLOC( unsigned char, Max+1 );
+    for ( i = 0; i < p->nSize; i++ )
+        if ( pPres[p->pArray[i]] == 0 )
+            pPres[p->pArray[i]] = 1, Count++;
+    ABC_FREE( pPres );
+    return Count;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void If_ManCacheAnalize( If_Man_t * p )
+{
+    Vec_Int_t * vRes, * vTest[32];
+    int i, Entry, uUnique;
+    vRes = Hsh_IntManHashArray( p->vCutData, 4 );
+    for ( i = 0; i <= p->pPars->nLutSize; i++ )
+        vTest[i] = Vec_IntAlloc( 1000 );
+    Vec_IntForEachEntry( vRes, Entry, i )
+        Vec_IntPush( vTest[Vec_IntEntry(p->vCutData, 4*i+2)], Entry );
+    for ( i = 0; i <= p->pPars->nLutSize; i++ )
+    {
+        uUnique = Vec_IntCountUnique(vTest[i]);
+        printf( "%2d-var entries = %8d. (%6.2f %%)  Unique entries = %8d. (%6.2f %%)\n", 
+            i, Vec_IntSize(vTest[i]), 100.0*Vec_IntSize(vTest[i])/Vec_IntSize(vRes), 
+            uUnique, 100.0*uUnique/Vec_IntSize(vTest[i]) );
+    }
+    for ( i = 0; i <= p->pPars->nLutSize; i++ )
+        Vec_IntFree( vTest[i] );
+    uUnique = Vec_IntCountUnique(vRes);
+    printf( "Total  entries = %8d. (%6.2f %%)  Unique entries = %8d. (%6.2f %%)\n", 
+        Vec_IntSize(p->vCutData)/4, 100.0, uUnique, 100.0*uUnique/(Vec_IntSize(p->vCutData)/4) );
+    Vec_IntFree( vRes );
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+
-- 
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