From baf2a6508dde77b466808d83f98bf7e98b7628d6 Mon Sep 17 00:00:00 2001 From: Alan Mishchenko Date: Wed, 22 Sep 2021 17:43:09 -0700 Subject: Experiment with simulation. --- src/aig/gia/giaSimBase.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 55 insertions(+), 2 deletions(-) diff --git a/src/aig/gia/giaSimBase.c b/src/aig/gia/giaSimBase.c index 42318f5c..b329ca0b 100644 --- a/src/aig/gia/giaSimBase.c +++ b/src/aig/gia/giaSimBase.c @@ -146,8 +146,6 @@ Vec_Wrd_t * Gia_ManSimPatSimOut( Gia_Man_t * pGia, Vec_Wrd_t * vSimsPi, int fOut Gia_ManSimPatSimAnd( pGia, i, pObj, nWords, vSims ); Gia_ManForEachCo( pGia, pObj, i ) Gia_ManSimPatSimPo( pGia, Gia_ObjId(pGia, pObj), pObj, nWords, vSims ); - Gia_ManForEachCo( pGia, pObj, i ) - Gia_ManSimPatSimPo( pGia, Gia_ObjId(pGia, pObj), pObj, nWords, vSims ); if ( !fOuts ) return vSims; Gia_ManForEachCo( pGia, pObj, i ) @@ -155,6 +153,61 @@ Vec_Wrd_t * Gia_ManSimPatSimOut( Gia_Man_t * pGia, Vec_Wrd_t * vSimsPi, int fOut Vec_WrdFree( vSims ); return vSimsCo; } +static inline void Gia_ManSimPatSimAnd3( Gia_Man_t * p, int i, Gia_Obj_t * pObj, int nWords, Vec_Wrd_t * vSims, Vec_Wrd_t * vSimsC ) +{ + word pComps[2] = { ~(word)0, 0 }; + word Diff0 = pComps[Gia_ObjFaninC0(pObj)]; + word Diff1 = pComps[Gia_ObjFaninC1(pObj)]; + word * pSims0 = Vec_WrdArray(vSims) + nWords*Gia_ObjFaninId0(pObj, i); + word * pSims1 = Vec_WrdArray(vSims) + nWords*Gia_ObjFaninId1(pObj, i); + word * pSims2 = Vec_WrdArray(vSims) + nWords*i; + word * pSimsC0 = Vec_WrdArray(vSimsC) + nWords*Gia_ObjFaninId0(pObj, i); + word * pSimsC1 = Vec_WrdArray(vSimsC) + nWords*Gia_ObjFaninId1(pObj, i); + word * pSimsC2 = Vec_WrdArray(vSimsC) + nWords*i; int w; + if ( Gia_ObjIsXor(pObj) ) + for ( w = 0; w < nWords; w++ ) + { + pSimsC0[w] |= pSimsC2[w]; + pSimsC1[w] |= pSimsC2[w]; + } + else + for ( w = 0; w < nWords; w++ ) + { + pSimsC0[w] |= (pSims2[w] | (pSims0[w] ^ Diff0)) & pSimsC2[w]; + pSimsC1[w] |= (pSims2[w] | (pSims1[w] ^ Diff1)) & pSimsC2[w]; + } +} +Vec_Wrd_t * Gia_ManSimPatSimIn( Gia_Man_t * pGia, Vec_Wrd_t * vSims, int fIns ) +{ + Gia_Obj_t * pObj; + int i, Id, nWords = Vec_WrdSize(vSims) / Gia_ManObjNum(pGia); + Vec_Wrd_t * vSimsCi = fIns ? Vec_WrdStart( Gia_ManCiNum(pGia) * nWords ) : NULL; + Vec_Wrd_t * vSimsC = Vec_WrdStart( Vec_WrdSize(vSims) ); + assert( Vec_WrdSize(vSims) % Gia_ManObjNum(pGia) == 0 ); + Gia_ManForEachCoDriverId( pGia, Id, i ) + memset( Vec_WrdEntryP(vSimsC, Id*nWords), 0xFF, sizeof(word)*nWords ); + Gia_ManForEachAndReverse( pGia, pObj, i ) + Gia_ManSimPatSimAnd3( pGia, i, pObj, nWords, vSims, vSimsC ); + if ( !fIns ) + return vSimsC; + Gia_ManForEachCi( pGia, pObj, i ) + memcpy( Vec_WrdEntryP(vSimsCi, i*nWords), Vec_WrdEntryP(vSimsC, Gia_ObjId(pGia, pObj)*nWords), sizeof(word)*nWords ); + Vec_WrdFree( vSimsC ); + return vSimsCi; +} +void Gia_ManSimPatSimInTest( Gia_Man_t * pGia ) +{ + int nWords = 10; + Vec_Wrd_t * vSimsCi = Vec_WrdStartRandom( Gia_ManCiNum(pGia) * nWords ); + Vec_Wrd_t * vSims = Gia_ManSimPatSimOut( pGia, vSimsCi, 0 ); + Vec_Wrd_t * vSims2 = Gia_ManSimPatSimIn( pGia, vSims, 0 ); + int nOnes = Abc_TtCountOnesVec( Vec_WrdArray(vSims2), Vec_WrdSize(vSims2) ); + int nTotal = 64*nWords*Gia_ManCandNum(pGia); + printf( "Ratio = %6.2f %%\n", 100.0*nOnes/nTotal ); + Vec_WrdFree( vSims ); + Vec_WrdFree( vSims2 ); + Vec_WrdFree( vSimsCi ); +} void Gia_ManSimPatResim( Gia_Man_t * pGia, Vec_Int_t * vObjs, int nWords, Vec_Wrd_t * vSims ) { Gia_Obj_t * pObj; int i; -- cgit v1.2.3