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| author | Alan Mishchenko <alanmi@berkeley.edu> | 2020-01-20 13:25:38 -0800 |
|---|---|---|
| committer | Alan Mishchenko <alanmi@berkeley.edu> | 2020-01-20 13:25:38 -0800 |
| commit | 0e05d1487fdb45f90c357b62f81d31742d650b58 (patch) | |
| tree | f96ffb5208fced9b6b021eaaaef62c5e90cb79eb | |
| parent | 632c7a7d891b3cbbe4ec43d0ee6c93c300ee9486 (diff) | |
| download | abc-0e05d1487fdb45f90c357b62f81d31742d650b58.tar.gz abc-0e05d1487fdb45f90c357b62f81d31742d650b58.tar.bz2 abc-0e05d1487fdb45f90c357b62f81d31742d650b58.zip | |
Experiments with MUX restructuring.
| -rw-r--r-- | src/aig/gia/giaUtil.c | 41 |
1 files changed, 34 insertions, 7 deletions
diff --git a/src/aig/gia/giaUtil.c b/src/aig/gia/giaUtil.c index 0f9f69de..ea6cb147 100644 --- a/src/aig/gia/giaUtil.c +++ b/src/aig/gia/giaUtil.c @@ -2396,29 +2396,56 @@ void Gia_ManDumpFiles( Gia_Man_t * p, int nCexesT, int nCexesV ) Gia_Man_t * Gia_ManDupWithMuxPos( Gia_Man_t * p ) { Vec_Int_t * vPoints = Vec_IntAlloc( 1000 ); + Vec_Int_t * vQuads = Vec_IntAlloc( 1000 ); + Vec_Bit_t * vHeads = Vec_BitStart( Gia_ManObjNum(p) ); + Vec_Bit_t * vDatas = Vec_BitStart( Gia_ManObjNum(p) ); Gia_Obj_t * pObj, * pCtrl, * pData0, * pData1; Gia_Man_t * pNew = Gia_ManDup( p ); int i, iObj; assert( Gia_ManRegNum(pNew) == 0 ); - Gia_ManForEachCo( pNew, pObj, i ) - Gia_ObjFanin0(pObj)->fMark0 = 1; Gia_ManForEachAnd( pNew, pObj, i ) { if ( !Gia_ObjIsMuxType(pObj) ) continue; pCtrl = Gia_ObjRecognizeMux( pObj, &pData1, &pData0 ); pCtrl = Gia_Regular(pCtrl); - pData1 = Gia_Regular(pData1); pData0 = Gia_Regular(pData0); - if ( Gia_ObjIsAnd(pObj) && !pObj->fMark0 ) Vec_IntPush( vPoints, Gia_ObjId(pNew, pObj) ); - if ( Gia_ObjIsAnd(pCtrl) && !pCtrl->fMark0 ) Vec_IntPush( vPoints, Gia_ObjId(pNew, pCtrl) ); - if ( Gia_ObjIsAnd(pData1) && !pData1->fMark0 ) Vec_IntPush( vPoints, Gia_ObjId(pNew, pData1) ); - if ( Gia_ObjIsAnd(pData0) && !pData0->fMark0 ) Vec_IntPush( vPoints, Gia_ObjId(pNew, pData0) ); + pData1 = Gia_Regular(pData1); + Vec_IntPushTwo( vQuads, Gia_ObjId(pNew, pObj), Gia_ObjId(pNew, pCtrl) ); + Vec_IntPushTwo( vQuads, Gia_ObjId(pNew, pData0), Gia_ObjId(pNew, pData1) ); + Vec_BitWriteEntry( vHeads, Gia_ObjId(pNew, pObj), 1 ); + Vec_BitWriteEntry( vDatas, Gia_ObjId(pNew, pData0), 1 ); + Vec_BitWriteEntry( vDatas, Gia_ObjId(pNew, pData1), 1 ); + } + Gia_ManForEachCo( pNew, pObj, i ) + Gia_ObjFanin0(pObj)->fMark0 = 1; + for ( i = 0; i < Vec_IntSize(vQuads)/4; i++ ) + { + int iObj = Vec_IntEntry( vQuads, 4*i+0 ); + int iCtrl = Vec_IntEntry( vQuads, 4*i+1 ); + int iData0 = Vec_IntEntry( vQuads, 4*i+2 ); + int iData1 = Vec_IntEntry( vQuads, 4*i+3 ); + if ( (Vec_BitEntry(vHeads, iObj) && Vec_BitEntry(vDatas, iObj)) || + (Vec_BitEntry(vHeads, iData0) && Vec_BitEntry(vDatas, iData0)) || + (Vec_BitEntry(vHeads, iData1) && Vec_BitEntry(vDatas, iData1)) ) + { + Gia_Obj_t * pObj = Gia_ManObj( p, iObj ); + Gia_Obj_t * pCtrl = Gia_ManObj( p, iCtrl ); + Gia_Obj_t * pData0 = Gia_ManObj( p, iData0 ); + Gia_Obj_t * pData1 = Gia_ManObj( p, iData1 ); + if ( Gia_ObjIsAnd(pObj) && !pObj->fMark0 ) Vec_IntPush( vPoints, iObj ); + if ( Gia_ObjIsAnd(pCtrl) && !pCtrl->fMark0 ) Vec_IntPush( vPoints, iCtrl ); + if ( Gia_ObjIsAnd(pData0) && !pData0->fMark0 ) Vec_IntPush( vPoints, iData0 ); + if ( Gia_ObjIsAnd(pData1) && !pData1->fMark0 ) Vec_IntPush( vPoints, iData1 ); + } } Gia_ManCleanMark0( pNew ); Vec_IntUniqify( vPoints ); Vec_IntForEachEntry( vPoints, iObj, i ) Gia_ManAppendCo( pNew, Abc_Var2Lit(iObj, 0) ); Vec_IntFree( vPoints ); + Vec_IntFree( vQuads ); + Vec_BitFree( vHeads ); + Vec_BitFree( vDatas ); return pNew; } |