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| author | Alan Mishchenko <alanmi@berkeley.edu> | 2008-05-07 08:01:00 -0700 |
|---|---|---|
| committer | Alan Mishchenko <alanmi@berkeley.edu> | 2008-05-07 08:01:00 -0700 |
| commit | 6175fcb8026bae3db5b4280b655131322d7944da (patch) | |
| tree | 41889f98814c981dcadcc5ce0f1990b74981cd49 /src/aig/nwk/nwkUtil.c | |
| parent | 436d5d2103b2cfec6a6deb5bbba72ce8e820f785 (diff) | |
| download | abc-6175fcb8026bae3db5b4280b655131322d7944da.tar.gz abc-6175fcb8026bae3db5b4280b655131322d7944da.tar.bz2 abc-6175fcb8026bae3db5b4280b655131322d7944da.zip | |
Version abc80507
Diffstat (limited to 'src/aig/nwk/nwkUtil.c')
| -rw-r--r-- | src/aig/nwk/nwkUtil.c | 56 |
1 files changed, 49 insertions, 7 deletions
diff --git a/src/aig/nwk/nwkUtil.c b/src/aig/nwk/nwkUtil.c index 1ef0af67..14f7632f 100644 --- a/src/aig/nwk/nwkUtil.c +++ b/src/aig/nwk/nwkUtil.c @@ -56,7 +56,7 @@ void Nwk_ManIncrementTravId( Nwk_Man_t * pNtk ) /**Function************************************************************* - Synopsis [Reads the maximum number of fanins.] + Synopsis [Reads the maximum number of fanins of a node.] Description [] @@ -100,7 +100,7 @@ int Nwk_ManGetTotalFanins( Nwk_Man_t * pNtk ) /**Function************************************************************* - Synopsis [] + Synopsis [Returns the number of true PIs.] Description [] @@ -120,7 +120,7 @@ int Nwk_ManPiNum( Nwk_Man_t * pNtk ) /**Function************************************************************* - Synopsis [] + Synopsis [Returns the number of true POs.] Description [] @@ -140,7 +140,7 @@ int Nwk_ManPoNum( Nwk_Man_t * pNtk ) /**Function************************************************************* - Synopsis [Reads the number of BDD nodes.] + Synopsis [Reads the number of AIG nodes.] Description [] @@ -211,7 +211,7 @@ int Nwk_NodeCompareLevelsDecrease( Nwk_Obj_t ** pp1, Nwk_Obj_t ** pp2 ) /**Function************************************************************* - Synopsis [Deletes the node.] + Synopsis [Prints the objects.] Description [] @@ -242,7 +242,7 @@ void Nwk_ObjPrint( Nwk_Obj_t * pObj ) /**Function************************************************************* - Synopsis [Deletes the node.] + Synopsis [Dumps the BLIF file for the network.] Description [] @@ -449,7 +449,7 @@ void Nwk_ManPrintFanioNew( Nwk_Man_t * pNtk ) /**Function************************************************************* - Synopsis [] + Synopsis [Cleans the temporary marks of the nodes.] Description [] @@ -466,6 +466,48 @@ void Nwk_ManCleanMarks( Nwk_Man_t * pMan ) pObj->MarkA = pObj->MarkB = 0; } +/**Function************************************************************* + + Synopsis [Minimizes the support of all nodes.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Nwk_ManMinimumBase( Nwk_Man_t * pNtk, int fVerbose ) +{ + unsigned * pTruth; + Vec_Int_t * vTruth; + Nwk_Obj_t * pObj, * pFanin, * pObjNew; + int uSupp, nSuppSize, i, k, Counter = 0; + vTruth = Vec_IntAlloc( 1 << 16 ); + Nwk_ManForEachNode( pNtk, pObj, i ) + { + pTruth = Hop_ManConvertAigToTruth( pNtk->pManHop, Hop_Regular(pObj->pFunc), Nwk_ObjFaninNum(pObj), vTruth, 0 ); + nSuppSize = Kit_TruthSupportSize(pTruth, Nwk_ObjFaninNum(pObj)); + if ( nSuppSize == Nwk_ObjFaninNum(pObj) ) + continue; + Counter++; + uSupp = Kit_TruthSupport( pTruth, Nwk_ObjFaninNum(pObj) ); + // create new node with the given support + pObjNew = Nwk_ManCreateNode( pNtk, nSuppSize, Nwk_ObjFanoutNum(pObj) ); + Nwk_ObjForEachFanin( pObj, pFanin, k ) + if ( uSupp & (1 << k) ) + Nwk_ObjAddFanin( pObjNew, pFanin ); + pObjNew->pFunc = Hop_Remap( pNtk->pManHop, pObj->pFunc, uSupp, Nwk_ObjFaninNum(pObj) ); + if ( fVerbose ) + printf( "Reducing node %d fanins from %d to %d.\n", + pObj->Id, Nwk_ObjFaninNum(pObj), Nwk_ObjFaninNum(pObjNew) ); + Nwk_ObjReplace( pObj, pObjNew ); + } + if ( fVerbose && Counter ) + printf( "Support minimization reduced support of %d nodes.\n", Counter ); + Vec_IntFree( vTruth ); +} + //////////////////////////////////////////////////////////////////////// /// END OF FILE /// //////////////////////////////////////////////////////////////////////// |