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| author | Alan Mishchenko <alanmi@berkeley.edu> | 2014-11-09 23:01:30 -0800 |
|---|---|---|
| committer | Alan Mishchenko <alanmi@berkeley.edu> | 2014-11-09 23:01:30 -0800 |
| commit | 9a292bd93c84e7f9445d796fdd5f1ca86c9ea220 (patch) | |
| tree | 4d3eb45d4cbae9ab2e6b230e4499edf0aeb91a7e /src/aig/gia | |
| parent | 372a348c90eb3f13c2a366815d1406476a638c24 (diff) | |
| download | abc-9a292bd93c84e7f9445d796fdd5f1ca86c9ea220.tar.gz abc-9a292bd93c84e7f9445d796fdd5f1ca86c9ea220.tar.bz2 abc-9a292bd93c84e7f9445d796fdd5f1ca86c9ea220.zip | |
Detecting full-adder chains and putting them into white boxes.
Diffstat (limited to 'src/aig/gia')
| -rw-r--r-- | src/aig/gia/giaFadds.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/aig/gia/giaFadds.c b/src/aig/gia/giaFadds.c index 4c2b9481..accba9c3 100644 --- a/src/aig/gia/giaFadds.c +++ b/src/aig/gia/giaFadds.c @@ -56,7 +56,7 @@ void Gia_ManIllustrateBoxes( Gia_Man_t * p ) // walk through the boxes curCi = Tim_ManPiNum(pManTime); curCo = 0; - for ( i = 0; i < Tim_ManBoxNum(pManTime); i++ ) + for ( i = 0; i < nBoxes; i++ ) { nBoxIns = Tim_ManBoxInputNum(pManTime, i); nBoxOuts = Tim_ManBoxOutputNum(pManTime, i); @@ -306,7 +306,7 @@ Vec_Int_t * Gia_ManDetectFullAdders( Gia_Man_t * p, int fVerbose ) vFadds = Dtc_ManFindCommonCuts( p, vCutsXor, vCutsMaj ); qsort( Vec_IntArray(vFadds), Vec_IntSize(vFadds)/5, 20, (int (*)(const void *, const void *))Dtc_ManCompare2 ); if ( fVerbose ) - printf( "XOR3 cuts = %d. MAJ cuts = %d. Fadds = %d.\n", Vec_IntSize(vCutsXor)/4, Vec_IntSize(vCutsMaj)/4, Vec_IntSize(vFadds)/5 ); + printf( "XOR3 cuts = %d. MAJ cuts = %d. Full-adders = %d.\n", Vec_IntSize(vCutsXor)/4, Vec_IntSize(vCutsMaj)/4, Vec_IntSize(vFadds)/5 ); //Dtc_ManPrintFadds( vFadds ); Vec_IntFree( vCutsXor ); Vec_IntFree( vCutsMaj ); @@ -467,10 +467,11 @@ void Gia_ManPrintChains( Gia_Man_t * p, Vec_Int_t * vFadds, Vec_Int_t * vMap, Ve Vec_Int_t * Gia_ManFindMapping( Gia_Man_t * p, Vec_Int_t * vFadds, Vec_Int_t * vMap, Vec_Wec_t * vChains ) { Vec_Int_t * vChain; - int i, k, iFadd; + int i, k, iFadd = -1; Vec_Int_t * vMap2Chain = Vec_IntStartFull( Gia_ManObjNum(p) ); Vec_WecForEachLevel( vChains, vChain, i ) { + assert( Vec_IntSize(vChain) > 0 ); Vec_IntForEachEntry( vChain, iFadd, k ) { //printf( "Chain %d: setting SUM %d (obj %d)\n", i, k, Vec_IntEntry(vFadds, 5*iFadd+3) ); @@ -692,7 +693,13 @@ Gia_Man_t * Gia_ManDupWithFaddBoxes( Gia_Man_t * p, int nFaddMin, int fVerbose ) Gia_ManDupWithFaddBoxes_rec( pNew, p, Gia_ObjFanin0(pObj), vFadds, vMap, vChains, vMap2Chain, vTruths ); Gia_ManForEachCo( p, pObj, i ) Gia_ManAppendCo( pNew, Gia_ObjFanin0Copy(pObj) ); - Gia_ManSetRegNum( pNew, Gia_ManRegNum(p) ); +// Gia_ManSetRegNum( pNew, Gia_ManRegNum(p) ); + if ( Gia_ManRegNum(p) ) + { + if ( fVerbose ) + printf( "Warning: Sequential design is coverted into combinational one by adding white boxes.\n" ); + Gia_ManSetRegNum( pNew, 0 ); + } assert( !Gia_ManHasDangling(pNew) ); // cleanup |