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|
/**CFile****************************************************************
FileName [giaMuxes.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [Scalable AIG package.]
Synopsis [Multiplexer profiling algorithm.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: giaMuxes.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "gia.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Counts XORs and MUXes.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Gia_ManCountMuxXor( Gia_Man_t * p, int * pnMuxes, int * pnXors )
{
Gia_Obj_t * pObj, * pFan0, * pFan1; int i;
*pnMuxes = *pnXors = 0;
Gia_ManForEachAnd( p, pObj, i )
{
if ( !Gia_ObjIsMuxType(pObj) )
continue;
if ( Gia_ObjRecognizeExor(pObj, &pFan0, &pFan1) )
(*pnXors)++;
else
(*pnMuxes)++;
}
}
void Gia_ManPrintMuxStats( Gia_Man_t * p )
{
int nAnds, nMuxes, nXors, nTotal;
if ( p->pMuxes )
{
nAnds = Gia_ManAndNum(p)-Gia_ManXorNum(p)-Gia_ManMuxNum(p);
nXors = Gia_ManXorNum(p);
nMuxes = Gia_ManMuxNum(p);
nTotal = nAnds + 3*nXors + 3*nMuxes;
}
else
{
Gia_ManCountMuxXor( p, &nMuxes, &nXors );
nAnds = Gia_ManAndNum(p) - 3*nMuxes - 3*nXors;
nTotal = Gia_ManAndNum(p);
}
Abc_Print( 1, "stats: " );
Abc_Print( 1, "xor =%8d %6.2f %% ", nXors, 300.0*nXors/nTotal );
Abc_Print( 1, "mux =%8d %6.2f %% ", nMuxes, 300.0*nMuxes/nTotal );
Abc_Print( 1, "and =%8d %6.2f %% ", nAnds, 100.0*nAnds/nTotal );
Abc_Print( 1, "obj =%8d ", Gia_ManAndNum(p) );
fflush( stdout );
}
/**Function*************************************************************
Synopsis [Derives GIA with MUXes.]
Description [Create MUX if the sum of fanin references does not exceed limit.]
SideEffects []
SeeAlso []
***********************************************************************/
Gia_Man_t * Gia_ManDupMuxes( Gia_Man_t * p, int Limit )
{
Gia_Man_t * pNew, * pTemp;
Gia_Obj_t * pObj, * pFan0, * pFan1, * pFanC;
int i;
assert( p->pMuxes == NULL );
assert( Limit >= 2 );
ABC_FREE( p->pRefs );
Gia_ManCreateRefs( p );
// start the new manager
pNew = Gia_ManStart( Gia_ManObjNum(p) );
pNew->pName = Abc_UtilStrsav( p->pName );
pNew->pSpec = Abc_UtilStrsav( p->pSpec );
pNew->pMuxes = ABC_CALLOC( unsigned, pNew->nObjsAlloc );
// create constant
Gia_ManConst0(p)->Value = 0;
// create PIs
Gia_ManForEachCi( p, pObj, i )
pObj->Value = Gia_ManAppendCi( pNew );
// create internal nodes
Gia_ManHashStart( pNew );
Gia_ManForEachAnd( p, pObj, i )
{
/*
if ( !Gia_ObjIsMuxType(pObj) || Gia_ObjRefNum(p, Gia_ObjFanin0(pObj)) + Gia_ObjRefNum(p, Gia_ObjFanin1(pObj)) > Limit )
pObj->Value = Gia_ManHashAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
else if ( Gia_ObjRecognizeExor(pObj, &pFan0, &pFan1) )
pObj->Value = Gia_ManHashXorReal( pNew, Gia_ObjLitCopy(p, Gia_ObjToLit(p, pFan0)), Gia_ObjLitCopy(p, Gia_ObjToLit(p, pFan1)) );
else
{
pFanC = Gia_ObjRecognizeMux( pObj, &pFan1, &pFan0 );
pObj->Value = Gia_ManHashMuxReal( pNew, Gia_ObjLitCopy(p, Gia_ObjToLit(p, pFanC)), Gia_ObjLitCopy(p, Gia_ObjToLit(p, pFan1)), Gia_ObjLitCopy(p, Gia_ObjToLit(p, pFan0)) );
}
*/
if ( !Gia_ObjIsMuxType(pObj) )
pObj->Value = Gia_ManHashAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
else if ( Gia_ObjRecognizeExor(pObj, &pFan0, &pFan1) )
pObj->Value = Gia_ManHashXorReal( pNew, Gia_ObjLitCopy(p, Gia_ObjToLit(p, pFan0)), Gia_ObjLitCopy(p, Gia_ObjToLit(p, pFan1)) );
else if ( Gia_ObjRefNum(p, Gia_ObjFanin0(pObj)) + Gia_ObjRefNum(p, Gia_ObjFanin1(pObj)) > Limit )
pObj->Value = Gia_ManHashAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
else
{
pFanC = Gia_ObjRecognizeMux( pObj, &pFan1, &pFan0 );
pObj->Value = Gia_ManHashMuxReal( pNew, Gia_ObjLitCopy(p, Gia_ObjToLit(p, pFanC)), Gia_ObjLitCopy(p, Gia_ObjToLit(p, pFan1)), Gia_ObjLitCopy(p, Gia_ObjToLit(p, pFan0)) );
}
}
Gia_ManHashStop( pNew );
// create ROs
Gia_ManForEachCo( p, pObj, i )
pObj->Value = Gia_ManAppendCo( pNew, Gia_ObjFanin0Copy(pObj) );
Gia_ManSetRegNum( pNew, Gia_ManRegNum(p) );
// perform cleanup
pNew = Gia_ManCleanup( pTemp = pNew );
Gia_ManStop( pTemp );
return pNew;
}
/**Function*************************************************************
Synopsis [Derives GIA without MUXes.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Gia_Man_t * Gia_ManDupNoMuxes( Gia_Man_t * p )
{
Gia_Man_t * pNew, * pTemp;
Gia_Obj_t * pObj;
int i;
assert( p->pMuxes != NULL );
// start the new manager
pNew = Gia_ManStart( 5000 );
pNew->pName = Abc_UtilStrsav( p->pName );
pNew->pSpec = Abc_UtilStrsav( p->pSpec );
// create constant
Gia_ManConst0(p)->Value = 0;
// create PIs
Gia_ManForEachCi( p, pObj, i )
pObj->Value = Gia_ManAppendCi( pNew );
// create internal nodes
Gia_ManHashStart( pNew );
Gia_ManForEachAnd( p, pObj, i )
{
if ( Gia_ObjIsMuxId(p, i) )
pObj->Value = Gia_ManHashMux( pNew, Gia_ObjFanin2Copy(p, pObj), Gia_ObjFanin1Copy(pObj), Gia_ObjFanin0Copy(pObj) );
else if ( Gia_ObjIsXor(pObj) )
pObj->Value = Gia_ManHashXor( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
else
pObj->Value = Gia_ManHashAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
}
Gia_ManHashStop( pNew );
// create ROs
Gia_ManForEachCo( p, pObj, i )
pObj->Value = Gia_ManAppendCo( pNew, Gia_ObjFanin0Copy(pObj) );
Gia_ManSetRegNum( pNew, Gia_ManRegNum(p) );
// perform cleanup
pNew = Gia_ManCleanup( pTemp = pNew );
Gia_ManStop( pTemp );
return pNew;
}
/**Function*************************************************************
Synopsis [Test these procedures.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Gia_Man_t * Gia_ManDupMuxesTest( Gia_Man_t * p )
{
Gia_Man_t * pNew, * pNew2;
pNew = Gia_ManDupMuxes( p, 2 );
pNew2 = Gia_ManDupNoMuxes( pNew );
Gia_ManPrintStats( p, NULL );
Gia_ManPrintStats( pNew, NULL );
Gia_ManPrintStats( pNew2, NULL );
Gia_ManStop( pNew );
// Gia_ManStop( pNew2 );
return pNew2;
}
/**Function*************************************************************
Synopsis [Returns the size of MUX structure.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Gia_MuxRef_rec( Gia_Man_t * p, int iObj )
{
Gia_Obj_t * pObj;
if ( !Gia_ObjIsMuxId(p, iObj) )
return 0;
pObj = Gia_ManObj( p, iObj );
if ( Gia_ObjRefInc(p, pObj) )
return 0;
return Gia_MuxRef_rec( p, Gia_ObjFaninId0p(p, pObj) ) +
Gia_MuxRef_rec( p, Gia_ObjFaninId1p(p, pObj) ) +
Gia_MuxRef_rec( p, Gia_ObjFaninId2p(p, pObj) ) + 1;
}
int Gia_MuxRef( Gia_Man_t * p, int iObj )
{
Gia_Obj_t * pObj = Gia_ManObj( p, iObj );
assert( Gia_ObjIsMuxId(p, iObj) );
return Gia_MuxRef_rec( p, Gia_ObjFaninId0p(p, pObj) ) +
Gia_MuxRef_rec( p, Gia_ObjFaninId1p(p, pObj) ) +
Gia_MuxRef_rec( p, Gia_ObjFaninId2p(p, pObj) ) + 1;
}
int Gia_MuxDeref_rec( Gia_Man_t * p, int iObj )
{
Gia_Obj_t * pObj;
if ( !Gia_ObjIsMuxId(p, iObj) )
return 0;
pObj = Gia_ManObj( p, iObj );
if ( Gia_ObjRefDec(p, pObj) )
return 0;
return Gia_MuxDeref_rec( p, Gia_ObjFaninId0p(p, pObj) ) +
Gia_MuxDeref_rec( p, Gia_ObjFaninId1p(p, pObj) ) +
Gia_MuxDeref_rec( p, Gia_ObjFaninId2p(p, pObj) ) + 1;
}
int Gia_MuxDeref( Gia_Man_t * p, int iObj )
{
Gia_Obj_t * pObj = Gia_ManObj( p, iObj );
assert( Gia_ObjIsMuxId(p, iObj) );
return Gia_MuxDeref_rec( p, Gia_ObjFaninId0p(p, pObj) ) +
Gia_MuxDeref_rec( p, Gia_ObjFaninId1p(p, pObj) ) +
Gia_MuxDeref_rec( p, Gia_ObjFaninId2p(p, pObj) ) + 1;
}
int Gia_MuxMffcSize( Gia_Man_t * p, int iObj )
{
int Count1, Count2;
if ( !Gia_ObjIsMuxId(p, iObj) )
return 0;
Count1 = Gia_MuxDeref( p, iObj );
Count2 = Gia_MuxRef( p, iObj );
assert( Count1 == Count2 );
return Count1;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Gia_MuxStructPrint_rec( Gia_Man_t * p, int iObj, int fFirst )
{
Gia_Obj_t * pObj = Gia_ManObj( p, iObj );
int iCtrl;
if ( !fFirst && (!Gia_ObjIsMuxId(p, iObj) || Gia_ObjRefNumId(p, iObj) > 0) )
return;
iCtrl = Gia_ObjFaninId2p(p, pObj);
printf( " [(" );
if ( Gia_ObjIsMuxId(p, iCtrl) && Gia_ObjRefNumId(p, iCtrl) == 0 )
Gia_MuxStructPrint_rec( p, iCtrl, 0 );
else
printf( "%d", iCtrl );
printf( ")" );
if ( Gia_ObjFaninC2(p, pObj) )
{
Gia_MuxStructPrint_rec( p, Gia_ObjFaninId0p(p, pObj), 0 );
printf( "|" );
Gia_MuxStructPrint_rec( p, Gia_ObjFaninId1p(p, pObj), 0 );
printf( "] " );
}
else
{
Gia_MuxStructPrint_rec( p, Gia_ObjFaninId1p(p, pObj), 0 );
printf( "|" );
Gia_MuxStructPrint_rec( p, Gia_ObjFaninId0p(p, pObj), 0 );
printf( "] " );
}
}
void Gia_MuxStructPrint( Gia_Man_t * p, int iObj )
{
int Count1, Count2;
assert( Gia_ObjIsMuxId(p, iObj) );
Count1 = Gia_MuxDeref( p, iObj );
Gia_MuxStructPrint_rec( p, iObj, 1 );
Count2 = Gia_MuxRef( p, iObj );
assert( Count1 == Count2 );
printf( "\n" );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Gia_MuxStructDump_rec( Gia_Man_t * p, int iObj, int fFirst, Vec_Str_t * vStr, int nDigitsId )
{
Gia_Obj_t * pObj = Gia_ManObj( p, iObj );
int iCtrl;
if ( !fFirst && (!Gia_ObjIsMuxId(p, iObj) || Gia_ObjRefNumId(p, iObj) > 0) )
return;
iCtrl = Gia_ObjFaninId2p(p, pObj);
Vec_StrPush( vStr, '[' );
Vec_StrPush( vStr, '(' );
if ( Gia_ObjIsMuxId(p, iCtrl) && Gia_ObjRefNumId(p, iCtrl) == 0 )
Gia_MuxStructDump_rec( p, iCtrl, 0, vStr, nDigitsId );
else
Vec_StrPrintNumStar( vStr, iCtrl, nDigitsId );
Vec_StrPush( vStr, ')' );
if ( Gia_ObjFaninC2(p, pObj) )
{
Gia_MuxStructDump_rec( p, Gia_ObjFaninId0p(p, pObj), 0, vStr, nDigitsId );
Vec_StrPush( vStr, '|' );
Gia_MuxStructDump_rec( p, Gia_ObjFaninId1p(p, pObj), 0, vStr, nDigitsId );
Vec_StrPush( vStr, ']' );
}
else
{
Gia_MuxStructDump_rec( p, Gia_ObjFaninId1p(p, pObj), 0, vStr, nDigitsId );
Vec_StrPush( vStr, '|' );
Gia_MuxStructDump_rec( p, Gia_ObjFaninId0p(p, pObj), 0, vStr, nDigitsId );
Vec_StrPush( vStr, ']' );
}
}
void Gia_MuxStructDump( Gia_Man_t * p, int iObj, Vec_Str_t * vStr, int Num, int nDigitsNum, int nDigitsId )
{
int Count1, Count2;
assert( Gia_ObjIsMuxId(p, iObj) );
Count1 = Gia_MuxDeref( p, iObj );
Vec_StrClear( vStr );
Vec_StrPrintNumStar( vStr, Num, nDigitsNum );
Gia_MuxStructDump_rec( p, iObj, 1, vStr, nDigitsId );
Vec_StrPush( vStr, '\0' );
Count2 = Gia_MuxRef( p, iObj );
assert( Count1 == Count2 );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Gia_ManMuxCompare( char ** pp1, char ** pp2 )
{
int Diff = strcmp( *pp1, *pp2 );
if ( Diff < 0 )
return 1;
if ( Diff > 0)
return -1;
return 0;
}
int Gia_ManMuxCountOne( char * p )
{
int Count = 0;
for ( ; *p; p++ )
Count += (*p == '[');
return Count;
}
void Gia_ManMuxProfile( Vec_Ptr_t * p, Vec_Int_t * vCounts )
{
int i; char * pTemp;
Vec_IntFill( vCounts, 1000, 0 );
Vec_PtrForEachEntry( char *, p, pTemp, i )
Vec_IntAddToEntry( vCounts, Abc_MinInt(Gia_ManMuxCountOne(pTemp), 999), 1 );
}
void Gia_ManMuxProfiling( Gia_Man_t * p )
{
Gia_Man_t * pNew;
Gia_Obj_t * pObj;
Vec_Int_t * vFans;
Vec_Int_t * vCounts = Vec_IntAlloc( 100 );
Vec_Ptr_t * vTrees = Vec_PtrAlloc( 1000 );
Vec_Str_t * vStr = Vec_StrAlloc( 1000 );
Vec_Int_t * vDegree = Vec_IntAlloc( 1000 );
int i, nRefs, Size, Count, Total = 0, Roots = 0;
int nDigitsId, nMemory = 0;
char * pTemp;
abctime clk = Abc_Clock();
pNew = Gia_ManDupMuxes( p, 2 );
nDigitsId = Abc_Base10Log( Gia_ManObjNum(pNew) );
Gia_ManCreateRefs( pNew );
Gia_ManForEachCo( pNew, pObj, i )
Gia_ObjRefFanin0Inc( pNew, pObj );
Vec_IntFill( vCounts, 1000, 0 );
vFans = Gia_ManFirstFanouts( pNew );
Gia_ManForEachMux( pNew, pObj, i )
{
Total++;
nRefs = Gia_ObjRefNumId(pNew, i);
assert( nRefs > 0 );
if ( nRefs > 1 || !Gia_ObjIsMuxId(pNew, Vec_IntEntry(vFans, i)) )
{
Roots++;
Size = Gia_MuxMffcSize(pNew, i);
Vec_IntAddToEntry( vCounts, Abc_MinInt(Size, 999), 1 );
if ( Size >= 2 )
{
Gia_MuxStructDump( pNew, i, vStr, Size, 3, nDigitsId );
Vec_PtrPush( vTrees, Abc_UtilStrsav(Vec_StrArray(vStr)) );
nMemory += Vec_StrSize(vStr);
}
}
}
printf( "MUXes: Total = %d. Roots = %d. Trees = %d. Memory = %.2f MB\n", Total, Roots, Vec_PtrSize(vTrees), 1.0*nMemory/(1<<20) );
Vec_IntForEachEntry( vCounts, Count, i )
if ( Count )
printf( "%d=%d ", i, Count );
printf( "\n" );
// Vec_PtrForEachEntryStop( char *, vTrees, pTemp, i, Abc_MinInt(Vec_PtrSize(vTrees), 40) )
// printf( "%6d : %3d %3d %s\n", i, -1, Gia_ManMuxCountOne(pTemp), pTemp );
// uniqify
Vec_PtrUniqify2( vTrees, (int (*)(void))Gia_ManMuxCompare, (void (*)(void))free, vDegree );
Gia_ManMuxProfile( vTrees, vCounts );
nMemory = 0;
Vec_PtrForEachEntry( char *, vTrees, pTemp, i )
nMemory += strlen(pTemp);
printf( "MUXes: Trees = %d. Memory = %.2f MB\n", Vec_PtrSize(vTrees), 1.0*nMemory/(1<<20) );
Vec_IntForEachEntry( vCounts, Count, i )
if ( Count )
printf( "%d=%d ", i, Count );
printf( "\n" );
// Vec_PtrForEachEntryStop( char *, vTrees, pTemp, i, Abc_MinInt(Vec_PtrSize(vTrees), 40) )
// printf( "%6d : %3d %3d %s\n", i, Vec_IntEntry(vDegree, i), Gia_ManMuxCountOne(pTemp), pTemp );
Vec_PtrForEachEntryStop( char *, vTrees, pTemp, i, Abc_MinInt(Vec_PtrSize(vTrees), 5000) )
if ( Vec_IntEntry(vDegree, i) > 10 )
printf( "%6d : %3d %3d %s\n", i, Vec_IntEntry(vDegree, i), Gia_ManMuxCountOne(pTemp), pTemp );
Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
Vec_PtrFreeFree( vTrees );
Vec_StrFree( vStr );
Vec_IntFree( vDegree );
Vec_IntFree( vCounts );
Vec_IntFree( vFans );
Gia_ManStop( pNew );
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
|
