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Improving CEC (command 'dcec') by integrating XOR balancing.

This commit is contained in:
Alan Mishchenko 2013-06-25 11:49:25 -07:00
parent b255c7693e
commit 94b26fe5a2
2 changed files with 38 additions and 3 deletions
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6
src/base/abci/abc.c
View File

@ -19731,10 +19731,10 @@ int Abc_CommandDCec( Abc_Frame_t * pAbc, int argc, char ** argv )
return 1;
}
if ( Abc_NtkLatchNum(pNtk1) || Abc_NtkLatchNum(pNtk2) )
if ( (pNtk1 && Abc_NtkLatchNum(pNtk1)) || (pNtk2 && Abc_NtkLatchNum(pNtk2)) )
{
if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
if ( pNtk1 && fDelete1 ) Abc_NtkDelete( pNtk1 );
if ( pNtk2 && fDelete2 ) Abc_NtkDelete( pNtk2 );
Abc_Print( -1, "Currently this command only works for networks without latches. Run \"comb\".\n" );
return 1;
}

35
src/proof/fra/fraCec.c
View File

@ -272,6 +272,28 @@ int Fra_FraigSat( Aig_Man_t * pMan, ABC_INT64_T nConfLimit, ABC_INT64_T nInsLimi
}
}
/**Function*************************************************************
Synopsis [Recognizes what nodes are inputs of the EXOR.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Aig_ManCountXors( Aig_Man_t * p )
{
Aig_Obj_t * pObj, * pFan0, * pFan1;
int i, Counter = 0;
Aig_ManForEachNode( p, pObj, i )
if ( Aig_ObjIsMuxType(pObj) && Aig_ObjRecognizeExor(pObj, &pFan0, &pFan1) )
Counter++;
return Counter;
}
/**Function*************************************************************
Synopsis []
@ -338,6 +360,19 @@ ABC_PRT( "Time", Abc_Clock() - clk );
for ( i = 0; i < 6; i++ )
{
//printf( "Running fraiging with %d BTnode and %d BTmiter.\n", pParams->nBTLimitNode, pParams->nBTLimitMiter );
// try XOR balancing
if ( Aig_ManCountXors(pAig) * 30 > Aig_ManNodeNum(pAig) + 300 )
{
clk = Abc_Clock();
pAig = Dar_ManBalanceXor( pTemp = pAig, 1, 0, 0 );
Aig_ManStop( pTemp );
if ( fVerbose )
{
printf( "Balance-X: Nodes = %6d. ", Aig_ManNodeNum(pAig) );
ABC_PRT( "Time", Abc_Clock() - clk );
}
}
// run fraiging
clk = Abc_Clock();
pAig = Fra_FraigPerform( pTemp = pAig, pParams );