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Lazy man's logic synthesis.

This commit is contained in:
Alan Mishchenko 2012-02-12 17:30:05 -08:00
parent 9f331ae915
commit d0713831a0
1 changed files with 20 additions and 4 deletions
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24
src/base/abci/abcRec.c
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@ -868,11 +868,15 @@ Hop_Obj_t * Abc_RecToHop( Hop_Man_t * pMan, If_Man_t * pIfMan, If_Cut_t * pCut,
// return Abc_NodeTruthToHop(pMan, pIfMan, pCut);
Kit_TruthCopy(pInOut, If_CutTruth(pCut), pCut->nLimit);
//special cases when cut-minimization return 2, that means there is only one leaf in the cut.
if ((Kit_TruthIsConst0(pInOut, nLeaves) && pCut->fCompl == 0) || (Kit_TruthIsConst1(pInOut, nLeaves) && pCut->fCompl == 1))
return Hop_ManConst0(pMan);
if ((Kit_TruthIsConst0(pInOut, nLeaves) && pCut->fCompl == 1) || (Kit_TruthIsConst1(pInOut, nLeaves) && pCut->fCompl == 0))
return Hop_ManConst1(pMan);
if (Kit_TruthSupport(pInOut, nLeaves) != Kit_BitMask(nLeaves))
{
{
for (i = 0; i < nLeaves; i++)
if(Kit_TruthVarInSupport( pInOut, nLeaves, i ))
return Hop_IthVar(pMan, i);
return Hop_NotCond(Hop_IthVar(pMan, i), (pCut->fCompl ^ ((*pInOut & 0x01) > 0)));
}
for (i = 0; i < nLeaves; i++)
@ -2792,11 +2796,23 @@ int If_CutDelayRecCost(If_Man_t* p, If_Cut_t* pCut, If_Obj_t * pObj)
//if not every variables are in the support, skip this cut.
if ( Kit_TruthSupport(pInOut, nLeaves) != Kit_BitMask(nLeaves) )
{
DelayMin = 0;
//s_pMan->nFunsFilteredBysupport++;
pCut->fUser = 1;
pCut->fUseless = 0;
pCut->Cost = 0;
return 0;
pCut->Cost = 1;
for (i = 0; i < nLeaves; i++)
{
if(Kit_TruthVarInSupport( pInOut, nLeaves, i ))
{
pCut->pPerm[i] = 0;
DelayMin = If_ObjCutBest(If_ManObj( p, pCut->pLeaves[i]))->Delay;
}
else
pCut->pPerm[i] = IF_BIG_CHAR;
}
return DelayMin;
}
timeCanonicize = clock();
//canonicize