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Experiments with inductive don't-cares.

This commit is contained in:
Alan Mishchenko 2014-02-12 12:05:23 -08:00
parent 646b2169f0
commit ee72a4caf6
2 changed files with 22 additions and 9 deletions
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20
src/base/abci/abc.c
View File

@ -4585,14 +4585,14 @@ usage:
int Abc_CommandMfs2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
extern int Abc_NtkPerformMfs( Abc_Ntk_t * pNtk, Sfm_Par_t * pPars );
extern int Abc_NtkMfsAfterICheck( Abc_Ntk_t * p, int nFrames, Vec_Int_t * vFlops, Sfm_Par_t * pPars );
extern int Abc_NtkMfsAfterICheck( Abc_Ntk_t * p, int nFrames, int nFramesAdd, Vec_Int_t * vFlops, Sfm_Par_t * pPars );
Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
Sfm_Par_t Pars, * pPars = &Pars;
int c, fIndDCs = 0;
int c, fIndDCs = 0, nFramesAdd = 0;
// set defaults
Sfm_ParSetDefault( pPars );
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "WFDMLCZNdaeivwh" ) ) != EOF )
while ( ( c = Extra_UtilGetopt( argc, argv, "WFDMLCZNIdaeivwh" ) ) != EOF )
{
switch ( c )
{
@ -4684,6 +4684,17 @@ int Abc_CommandMfs2( Abc_Frame_t * pAbc, int argc, char ** argv )
if ( pPars->nNodesMax < 0 )
goto usage;
break;
case 'I':
if ( globalUtilOptind >= argc )
{
Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
goto usage;
}
nFramesAdd = atoi(argv[globalUtilOptind]);
globalUtilOptind++;
if ( nFramesAdd < 0 )
goto usage;
break;
case 'd':
pPars->fRrOnly ^= 1;
break;
@ -4737,7 +4748,7 @@ int Abc_CommandMfs2( Abc_Frame_t * pAbc, int argc, char ** argv )
return 1;
}
// modify the current network
if ( !Abc_NtkMfsAfterICheck( pNtk, pAbc->nIndFrames, pAbc->vIndFlops, pPars ) )
if ( !Abc_NtkMfsAfterICheck( pNtk, pAbc->nIndFrames, nFramesAdd, pAbc->vIndFlops, pPars ) )
{
Abc_Print( -1, "Resynthesis has failed.\n" );
return 1;
@ -4769,6 +4780,7 @@ usage:
Abc_Print( -2, "\t-a : toggle minimizing area or area+edges [default = %s]\n", pPars->fArea? "area": "area+edges" );
Abc_Print( -2, "\t-e : toggle high-effort resubstitution [default = %s]\n", pPars->fMoreEffort? "yes": "no" );
Abc_Print( -2, "\t-i : toggle using inductive don't-cares [default = %s]\n", fIndDCs? "yes": "no" );
Abc_Print( -2, "\t-I : the number of additional frames inserted [default = %d]\n", nFramesAdd );
Abc_Print( -2, "\t-v : toggle printing optimization summary [default = %s]\n", pPars->fVerbose? "yes": "no" );
Abc_Print( -2, "\t-w : toggle printing detailed stats for each node [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
Abc_Print( -2, "\t-h : print the command usage\n");

11
src/base/abci/abcMfs.c
View File

@ -298,12 +298,13 @@ int Abc_NtkPerformMfs( Abc_Ntk_t * pNtk, Sfm_Par_t * pPars )
SeeAlso []
***********************************************************************/
Abc_Ntk_t * Abc_NtkUnrollAndDrop( Abc_Ntk_t * p, int nFrames, Vec_Int_t * vFlops, int * piPivot )
Abc_Ntk_t * Abc_NtkUnrollAndDrop( Abc_Ntk_t * p, int nFrames, int nFramesAdd, Vec_Int_t * vFlops, int * piPivot )
{
Abc_Ntk_t * pNtk;
Abc_Obj_t * pFanin, * pNode;
Vec_Ptr_t * vNodes;
int i, k, f, Value;
assert( nFramesAdd >= 0 );
assert( Abc_NtkIsLogic(p) );
assert( Vec_IntSize(vFlops) == Abc_NtkLatchNum(p) );
*piPivot = -1;
@ -315,7 +316,7 @@ Abc_Ntk_t * Abc_NtkUnrollAndDrop( Abc_Ntk_t * p, int nFrames, Vec_Int_t * vFlops
pNode->pCopy = Abc_NtkCreatePi( pNtk );
// iterate unrolling
vNodes = Abc_NtkDfs( p, 0 );
for ( f = 0; f <= nFrames; f++ )
for ( f = 0; f <= nFrames + nFramesAdd; f++ )
{
if ( f > 0 )
{
@ -343,7 +344,7 @@ Abc_Ntk_t * Abc_NtkUnrollAndDrop( Abc_Ntk_t * p, int nFrames, Vec_Int_t * vFlops
Abc_NtkForEachLatch( p, pNode, i )
Abc_ObjFanout0(pNode)->pCopy = Abc_ObjFanin0(pNode)->pCopy;
// add final POs
if ( f > 0 )
if ( f > nFramesAdd )
{
Vec_IntForEachEntry( vFlops, Value, i )
{
@ -427,7 +428,7 @@ void Abc_NtkReinsertNodes( Abc_Ntk_t * p, Abc_Ntk_t * pNtk, int iPivot )
SeeAlso []
***********************************************************************/
int Abc_NtkMfsAfterICheck( Abc_Ntk_t * p, int nFrames, Vec_Int_t * vFlops, Sfm_Par_t * pPars )
int Abc_NtkMfsAfterICheck( Abc_Ntk_t * p, int nFrames, int nFramesAdd, Vec_Int_t * vFlops, Sfm_Par_t * pPars )
{
Sfm_Ntk_t * pp;
int nFaninMax, nNodes;
@ -444,7 +445,7 @@ int Abc_NtkMfsAfterICheck( Abc_Ntk_t * p, int nFrames, Vec_Int_t * vFlops, Sfm_P
if ( !Abc_NtkHasSop(p) )
Abc_NtkToSop( p, 0 );
// derive unfolded network
pNtk = Abc_NtkUnrollAndDrop( p, nFrames, vFlops, &iPivot );
pNtk = Abc_NtkUnrollAndDrop( p, nFrames, nFramesAdd, vFlops, &iPivot );
Io_WriteBlifLogic( pNtk, "unroll_dump.blif", 0 );
// collect information
pp = Abc_NtkExtractMfs2( pNtk, iPivot );