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Adding switch muxes -a to create networks of ADDs.

This commit is contained in:
Alan Mishchenko 2021-05-15 13:28:06 -07:00
parent ed13c6d4d2
commit 610a3d3fc2
4 changed files with 38 additions and 15 deletions
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2
src/base/abc/abc.h
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@ -762,7 +762,7 @@ extern ABC_DLL Abc_Ntk_t * Abc_NtkToNetlist( Abc_Ntk_t * pNtk );
extern ABC_DLL Abc_Ntk_t * Abc_NtkToNetlistBench( Abc_Ntk_t * pNtk );
/*=== abcNtbdd.c ==========================================================*/
extern ABC_DLL Abc_Ntk_t * Abc_NtkDeriveFromBdd( void * dd, void * bFunc, char * pNamePo, Vec_Ptr_t * vNamesPi );
extern ABC_DLL Abc_Ntk_t * Abc_NtkBddToMuxes( Abc_Ntk_t * pNtk, int fGlobal, int Limit );
extern ABC_DLL Abc_Ntk_t * Abc_NtkBddToMuxes( Abc_Ntk_t * pNtk, int fGlobal, int Limit, int fUseAdd );
extern ABC_DLL void * Abc_NtkBuildGlobalBdds( Abc_Ntk_t * pNtk, int fBddSizeMax, int fDropInternal, int fReorder, int fReverse, int fVerbose );
extern ABC_DLL void * Abc_NtkFreeGlobalBdds( Abc_Ntk_t * pNtk, int fFreeMan );
extern ABC_DLL int Abc_NtkSizeOfGlobalBdds( Abc_Ntk_t * pNtk );

12
src/base/abci/abc.c
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@ -11111,11 +11111,11 @@ usage:
int Abc_CommandMuxes( Abc_Frame_t * pAbc, int argc, char ** argv )
{
Abc_Ntk_t * pNtk, * pNtkRes;
int c, fGlobal = 0, Limit = 1000000;
int c, fGlobal = 0, fUseAdd = 0, Limit = 1000000;
pNtk = Abc_FrameReadNtk(pAbc);
// set defaults
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "Bgh" ) ) != EOF )
while ( ( c = Extra_UtilGetopt( argc, argv, "Bgah" ) ) != EOF )
{
switch ( c )
{
@ -11133,6 +11133,9 @@ int Abc_CommandMuxes( Abc_Frame_t * pAbc, int argc, char ** argv )
case 'g':
fGlobal ^= 1;
break;
case 'a':
fUseAdd ^= 1;
break;
case 'h':
goto usage;
default:
@ -11164,7 +11167,7 @@ int Abc_CommandMuxes( Abc_Frame_t * pAbc, int argc, char ** argv )
}
// get the new network
pNtkRes = Abc_NtkBddToMuxes( pNtk, fGlobal, Limit );
pNtkRes = Abc_NtkBddToMuxes( pNtk, fGlobal, Limit, fUseAdd );
if ( pNtkRes == NULL )
{
Abc_Print( 0, "Converting to MUXes has failed.\n" );
@ -11175,11 +11178,12 @@ int Abc_CommandMuxes( Abc_Frame_t * pAbc, int argc, char ** argv )
return 0;
usage:
Abc_Print( -2, "usage: muxes [-B num] [-gh]\n" );
Abc_Print( -2, "usage: muxes [-B num] [-gah]\n" );
Abc_Print( -2, "\t converts the current network into a network derived by\n" );
Abc_Print( -2, "\t replacing all nodes by DAGs isomorphic to the local BDDs\n" );
Abc_Print( -2, "\t-B <num>: limit on live BDD nodes during collapsing [default = %d]\n", Limit );
Abc_Print( -2, "\t-g : toggle visualizing the global BDDs of primary outputs [default = %s].\n", fGlobal? "yes": "no" );
Abc_Print( -2, "\t-a : toggle using ADDs instead of BDDs [default = %s].\n", fUseAdd? "yes": "no" );
Abc_Print( -2, "\t-h : print the command usage\n");
return 1;
}

37
src/base/abci/abcNtbdd.c
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@ -34,7 +34,7 @@ ABC_NAMESPACE_IMPL_START
#ifdef ABC_USE_CUDD
int Abc_NtkBddToMuxesPerformGlo( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew, int Limit, int fReorder );
int Abc_NtkBddToMuxesPerformGlo( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew, int Limit, int fReorder, int fUseAdd );
static void Abc_NtkBddToMuxesPerform( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew );
static Abc_Obj_t * Abc_NodeBddToMuxes( Abc_Obj_t * pNodeOld, Abc_Ntk_t * pNtkNew );
static Abc_Obj_t * Abc_NodeBddToMuxes_rec( DdManager * dd, DdNode * bFunc, Abc_Ntk_t * pNtkNew, st__table * tBdd2Node );
@ -129,13 +129,13 @@ Abc_Ntk_t * Abc_NtkDeriveFromBdd( void * dd0, void * bFunc, char * pNamePo, Vec_
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Abc_NtkBddToMuxes( Abc_Ntk_t * pNtk, int fGlobal, int Limit )
Abc_Ntk_t * Abc_NtkBddToMuxes( Abc_Ntk_t * pNtk, int fGlobal, int Limit, int fUseAdd )
{
Abc_Ntk_t * pNtkNew;
pNtkNew = Abc_NtkStartFrom( pNtk, ABC_NTK_LOGIC, ABC_FUNC_SOP );
if ( fGlobal )
{
if ( !Abc_NtkBddToMuxesPerformGlo( pNtk, pNtkNew, Limit, 0 ) )
if ( !Abc_NtkBddToMuxesPerformGlo( pNtk, pNtkNew, Limit, 0, fUseAdd ) )
{
Abc_NtkDelete( pNtkNew );
return NULL;
@ -237,8 +237,10 @@ Abc_Obj_t * Abc_NodeBddToMuxes_rec( DdManager * dd, DdNode * bFunc, Abc_Ntk_t *
{
Abc_Obj_t * pNodeNew, * pNodeNew0, * pNodeNew1, * pNodeNewC;
assert( !Cudd_IsComplement(bFunc) );
if ( bFunc == b1 )
if ( bFunc == b1 || bFunc == a1 )
return Abc_NtkCreateNodeConst1(pNtkNew);
if ( bFunc == a0 )
return Abc_NtkCreateNodeConst0(pNtkNew);
if ( st__lookup( tBdd2Node, (char *)bFunc, (char **)&pNodeNew ) )
return pNodeNew;
// solve for the children nodes
@ -265,9 +267,10 @@ Abc_Obj_t * Abc_NodeBddToMuxes_rec( DdManager * dd, DdNode * bFunc, Abc_Ntk_t *
SeeAlso []
***********************************************************************/
int Abc_NtkBddToMuxesPerformGlo( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew, int Limit, int fReorder )
int Abc_NtkBddToMuxesPerformGlo( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew, int Limit, int fReorder, int fUseAdd )
{
DdManager * dd;
Vec_Ptr_t * vAdds = fUseAdd ? Vec_PtrAlloc(100) : NULL;
Abc_Obj_t * pObj, * pObjNew; int i;
st__table * tBdd2Node;
assert( Abc_NtkIsStrash(pNtk) );
@ -287,15 +290,31 @@ int Abc_NtkBddToMuxesPerformGlo( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew, int Limi
Abc_NtkForEachCo( pNtk, pObj, i )
{
DdNode * bFunc = (DdNode *)Abc_ObjGlobalBdd(pObj);
pObjNew = Abc_NodeBddToMuxes_rec( dd, Cudd_Regular(bFunc), pNtkNew, tBdd2Node );
if ( Cudd_IsComplement(bFunc) )
pObjNew = Abc_NtkCreateNodeInv( pNtkNew, pObjNew );
if ( fUseAdd )
{
DdNode * aFunc = Cudd_BddToAdd( dd, bFunc ); Cudd_Ref( aFunc );
pObjNew = Abc_NodeBddToMuxes_rec( dd, aFunc, pNtkNew, tBdd2Node );
Vec_PtrPush( vAdds, aFunc );
}
else
{
pObjNew = Abc_NodeBddToMuxes_rec( dd, Cudd_Regular(bFunc), pNtkNew, tBdd2Node );
if ( Cudd_IsComplement(bFunc) )
pObjNew = Abc_NtkCreateNodeInv( pNtkNew, pObjNew );
}
Abc_ObjAddFanin( pObj->pCopy, pObjNew );
}
// cleanup
st__free_table( tBdd2Node );
Abc_NtkFreeGlobalBdds( pNtk, 0 );
if ( vAdds )
{
DdNode * aTemp;
Vec_PtrForEachEntry( DdNode *, vAdds, aTemp, i )
Cudd_RecursiveDeref( dd, aTemp );
Vec_PtrFree( vAdds );
}
Extra_StopManager( dd );
Abc_NtkCleanCopy( pNtk );
return 1;
@ -663,7 +682,7 @@ ABC_PRT( "Time", Abc_Clock() - clk );
#else
double Abc_NtkSpacePercentage( Abc_Obj_t * pNode ) { return 0.0; }
Abc_Ntk_t * Abc_NtkBddToMuxes( Abc_Ntk_t * pNtk, int fGlobal, int Limit ) { return NULL; }
Abc_Ntk_t * Abc_NtkBddToMuxes( Abc_Ntk_t * pNtk, int fGlobal, int Limit, int fUseAdd ) { return NULL; }
#endif

2
src/bdd/llb/llb4Nonlin.c
View File

@ -1156,7 +1156,7 @@ Aig_Man_t * Llb_ReachableStates( Aig_Man_t * pAig )
Cudd_Quit( dd );
// convert
pNtkMuxes = Abc_NtkBddToMuxes( pNtk, 0, 1000000 );
pNtkMuxes = Abc_NtkBddToMuxes( pNtk, 0, 1000000, 0 );
Abc_NtkDelete( pNtk );
pNtk = Abc_NtkStrash( pNtkMuxes, 0, 1, 0 );
Abc_NtkDelete( pNtkMuxes );