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Adding command 'cof' to replace node by a constant.

This commit is contained in:
Alan Mishchenko 2018-09-27 14:49:29 -07:00
parent 5528d1b17c
commit a0413c9a1c
3 changed files with 113 additions and 18 deletions
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1
src/base/abc/abc.h
View File

@ -657,6 +657,7 @@ extern ABC_DLL void Abc_ObjPatchFanoutFanin( Abc_Obj_t * pObj, int
extern ABC_DLL Abc_Obj_t * Abc_ObjInsertBetween( Abc_Obj_t * pNodeIn, Abc_Obj_t * pNodeOut, Abc_ObjType_t Type );
extern ABC_DLL void Abc_ObjTransferFanout( Abc_Obj_t * pObjOld, Abc_Obj_t * pObjNew );
extern ABC_DLL void Abc_ObjReplace( Abc_Obj_t * pObjOld, Abc_Obj_t * pObjNew );
extern ABC_DLL void Abc_ObjReplaceByConstant( Abc_Obj_t * pNode, int fConst1 );
extern ABC_DLL int Abc_ObjFanoutFaninNum( Abc_Obj_t * pFanout, Abc_Obj_t * pFanin );
/*=== abcFanOrder.c ==========================================================*/
extern ABC_DLL int Abc_NtkMakeLegit( Abc_Ntk_t * pNtk );

24
src/base/abc/abcFanio.c
View File

@ -335,6 +335,30 @@ void Abc_ObjReplace( Abc_Obj_t * pNodeOld, Abc_Obj_t * pNodeNew )
Abc_NtkDeleteObj_rec( pNodeOld, 1 );
}
/**Function*************************************************************
Synopsis [Replaces a node by a constant.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Abc_ObjReplaceByConstant( Abc_Obj_t * pNode, int fConst1 )
{
Abc_Obj_t * pNodeNew;
assert( Abc_NtkIsLogic(pNode->pNtk) );
assert( !Abc_ObjIsCo(pNode) );
pNodeNew = fConst1 ? Abc_NtkCreateNodeConst1(pNode->pNtk) : Abc_NtkCreateNodeConst0(pNode->pNtk);
// transfer the fanouts to the old node
Abc_ObjTransferFanout( pNode, pNodeNew );
// remove the old node
if ( Abc_ObjIsNode(pNode) )
Abc_NtkDeleteObj_rec( pNode, 1 );
}
/**Function*************************************************************
Synopsis [Returns the index of the fanin in the fanin list of the fanout.]

106
src/base/abci/abc.c
View File

@ -186,6 +186,7 @@ static int Abc_CommandExtSeqDcs ( Abc_Frame_t * pAbc, int argc, cha
static int Abc_CommandReach ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCone ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandNode ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCof ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTopmost ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTopAnd ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTrim ( Abc_Frame_t * pAbc, int argc, char ** argv );
@ -880,8 +881,9 @@ void Abc_Init( Abc_Frame_t * pAbc )
Cmd_CommandAdd( pAbc, "Various", "reach", Abc_CommandReach, 0 );
Cmd_CommandAdd( pAbc, "Various", "cone", Abc_CommandCone, 1 );
Cmd_CommandAdd( pAbc, "Various", "node", Abc_CommandNode, 1 );
Cmd_CommandAdd( pAbc, "Various", "cof", Abc_CommandCof, 1 );
Cmd_CommandAdd( pAbc, "Various", "topmost", Abc_CommandTopmost, 1 );
Cmd_CommandAdd( pAbc, "Various", "topand", Abc_CommandTopAnd, 1 );
Cmd_CommandAdd( pAbc, "Various", "topand", Abc_CommandTopAnd, 1 );
Cmd_CommandAdd( pAbc, "Various", "trim", Abc_CommandTrim, 1 );
Cmd_CommandAdd( pAbc, "Various", "short_names", Abc_CommandShortNames, 0 );
Cmd_CommandAdd( pAbc, "Various", "move_names", Abc_CommandMoveNames, 0 );
@ -3089,21 +3091,18 @@ int Abc_CommandShowBdd( Abc_Frame_t * pAbc, int argc, char ** argv )
if ( fGlobal )
{
if ( !Abc_NtkIsStrash(pNtk) )
{
Abc_Print( -1, "Visualizing BDDs can only be done for AIGs (run \"strash\").\n" );
return 1;
}
}
else
{
if ( !Abc_NtkIsBddLogic(pNtk) )
{
Abc_Print( -1, "Visualizing BDDs can only be done for logic BDD networks (run \"bdd\").\n" );
return 1;
}
Abc_Ntk_t * pTemp = Abc_NtkIsStrash(pNtk) ? pNtk : Abc_NtkStrash(pNtk, 0, 0, 0);
Abc_NtkShowBdd( pTemp );
if ( pTemp != pNtk )
Abc_NtkDelete( pTemp );
return 0;
}
if ( !Abc_NtkIsBddLogic(pNtk) )
{
Abc_Print( -1, "Visualizing BDDs can only be done for logic BDD networks (run \"bdd\").\n" );
return 1;
}
if ( argc > globalUtilOptind + 1 )
{
Abc_Print( -1, "Wrong number of auguments.\n" );
@ -3127,10 +3126,7 @@ int Abc_CommandShowBdd( Abc_Frame_t * pAbc, int argc, char ** argv )
return 1;
}
}
if ( fGlobal )
Abc_NtkShowBdd( pNtk );
else
Abc_NodeShowBdd( pNode );
Abc_NodeShowBdd( pNode );
return 0;
usage:
@ -11243,6 +11239,80 @@ usage:
return 1;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Abc_CommandCof( Abc_Frame_t * pAbc, int argc, char ** argv )
{
Abc_Ntk_t * pNtk;
Abc_Obj_t * pNode;
int c, Const;
pNtk = Abc_FrameReadNtk(pAbc);
// set defaults
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
{
switch ( c )
{
case 'h':
goto usage;
default:
goto usage;
}
}
if ( pNtk == NULL )
{
Abc_Print( -1, "Empty network.\n" );
return 1;
}
if ( !Abc_NtkIsLogic(pNtk) )
{
Abc_Print( -1, "Currently can only be applied to a logic network.\n" );
return 1;
}
if ( argc != globalUtilOptind + 2 )
{
Abc_Print( -1, "Wrong number of auguments.\n" );
goto usage;
}
pNode = Abc_NtkFindNode( pNtk, argv[globalUtilOptind] );
if ( pNode == NULL )
{
Abc_Print( -1, "Cannot find node \"%s\".\n", argv[globalUtilOptind] );
return 1;
}
Const = atoi( argv[globalUtilOptind+1] );
if ( Const != 0 && Const != 1 )
{
Abc_Print( -1, "Constant should be 0 or 1.\n", argv[globalUtilOptind+1] );
return 1;
}
Abc_ObjReplaceByConstant( pNode, Const );
return 0;
usage:
Abc_Print( -2, "usage: cof [-h] <node> <const>\n" );
Abc_Print( -2, "\t replaces one node in a logic network by constant 0 or 1\n" );
Abc_Print( -2, "\t-h : print the command usage\n");
Abc_Print( -2, "\t<node> : the node to replace\n");
Abc_Print( -2, "\t<const> : the constant to replace the node with\n");
Abc_Print( -2, "\tname : the node name\n");
return 1;
}
/**Function*************************************************************