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Commit fdd8404b by Alan Mishchenko
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Updates to delay optimization project.

parent 1f45cca6
Showing with 239 additions and 107 deletions
src/opt/sbd/sbdCut.c
...@@ -28,36 +28,45 @@ ABC_NAMESPACE_IMPL_START ...@@ -28,36 +28,45 @@ ABC_NAMESPACE_IMPL_START
//////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////
#define SBD_MAX_CUTSIZE 8 #define SBD_MAX_CUTSIZE 8
#define SBD_MAX_CUTNUM 64 #define SBD_MAX_CUTNUM 1001
#define SBD_MAX_TT_WORDS ((SBD_MAX_CUTSIZE > 6) ? 1 << (SBD_MAX_CUTSIZE-6) : 1) #define SBD_MAX_TT_WORDS ((SBD_MAX_CUTSIZE > 6) ? 1 << (SBD_MAX_CUTSIZE-6) : 1)
#define SBD_CUT_NO_LEAF 255 #define SBD_CUT_NO_LEAF 0xF
typedef struct Sbd_Cut_t_ Sbd_Cut_t; typedef struct Sbd_Cut_t_ Sbd_Cut_t;
struct Sbd_Cut_t_ struct Sbd_Cut_t_
{ {
word Sign; // signature word Sign; // signature
int iFunc; // functionality int iFunc; // functionality
unsigned Cost : 24; // misc cut cost int Cost; // cut cost
unsigned nLeaves : 8; // the number of leaves int CostLev; // cut cost
unsigned fSpec : 1; // special cut
unsigned nTreeLeaves : 27; // cut cost
unsigned nLeaves : 4; // the number of leaves
int pLeaves[SBD_MAX_CUTSIZE]; // leaves int pLeaves[SBD_MAX_CUTSIZE]; // leaves
}; };
typedef struct Sbd_Sto_t_ Sbd_Sto_t;
struct Sbd_Sto_t_ struct Sbd_Sto_t_
{ {
int nLutSize; int nLutSize;
int nCutSize;
int nCutNum; int nCutNum;
int fCutMin; int fCutMin;
int fVerbose; int fVerbose;
Gia_Man_t * pGia; // user's AIG manager (will be modified by adding nodes) Gia_Man_t * pGia; // user's AIG manager (will be modified by adding nodes)
Vec_Int_t * vMirrors; // mirrors for each node
Vec_Int_t * vDelays; // delays for each node Vec_Int_t * vDelays; // delays for each node
Vec_Int_t * vLevels; // levels for each node
Vec_Int_t * vRefs; // refs for each node
Vec_Wec_t * vCuts; // cuts for each node Vec_Wec_t * vCuts; // cuts for each node
Vec_Mem_t * vTtMem; // truth tables Vec_Mem_t * vTtMem; // truth tables
Sbd_Cut_t pCuts[3][SBD_MAX_CUTNUM]; // temporary cuts Sbd_Cut_t pCuts[3][SBD_MAX_CUTNUM]; // temporary cuts
Sbd_Cut_t * ppCuts[SBD_MAX_CUTNUM]; // temporary cut pointers Sbd_Cut_t * ppCuts[SBD_MAX_CUTNUM]; // temporary cut pointers
abctime clkStart; // starting time abctime clkStart; // starting time
double CutCount[4]; // cut counters double CutCount[4]; // cut counters
int nCutsSpec; // special cuts
int nCutsOver; // overflow cuts
int DelayMin; // minimum delay
}; };
static inline word * Sbd_CutTruth( Sbd_Sto_t * p, Sbd_Cut_t * pCut ) { return Vec_MemReadEntry(p->vTtMem, Abc_Lit2Var(pCut->iFunc)); } static inline word * Sbd_CutTruth( Sbd_Sto_t * p, Sbd_Cut_t * pCut ) { return Vec_MemReadEntry(p->vTtMem, Abc_Lit2Var(pCut->iFunc)); }
...@@ -70,45 +79,6 @@ static inline word * Sbd_CutTruth( Sbd_Sto_t * p, Sbd_Cut_t * pCut ) { return Ve ...@@ -70,45 +79,6 @@ static inline word * Sbd_CutTruth( Sbd_Sto_t * p, Sbd_Cut_t * pCut ) { return Ve
/**Function************************************************************* /**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Sbd_Sto_t * Sbd_StoAlloc( Gia_Man_t * pGia, int nLutSize, int nCutNum, int fCutMin, int fVerbose )
{
Sbd_Sto_t * p;
assert( nLutSize > 1 && nLutSize <= SBD_MAX_CUTSIZE );
assert( nCutNum > 1 && nCutNum < SBD_MAX_CUTNUM );
p = ABC_CALLOC( Sbd_Sto_t, 1 );
p->clkStart = Abc_Clock();
p->nLutSize = nLutSize;
p->nCutNum = nCutNum;
p->fCutMin = fCutMin;
p->fVerbose = fVerbose;
p->pGia = pGia;
p->vDelays = Vec_IntStart( Gia_ManObjNum(pGia) );
p->vCuts = Vec_WecStart( Gia_ManObjNum(pGia) );
p->vTtMem = fCutMin ? Vec_MemAllocForTT( nLutSize, 0 ) : NULL;
return p;
}
void Sbd_StoFree( Sbd_Sto_t * p )
{
Vec_IntFree( p->vDelays );
Vec_WecFree( p->vCuts );
if ( p->fCutMin )
Vec_MemHashFree( p->vTtMem );
if ( p->fCutMin )
Vec_MemFree( p->vTtMem );
ABC_FREE( p );
}
/**Function*************************************************************
Synopsis [Check correctness of cuts.] Synopsis [Check correctness of cuts.]
Description [] Description []
...@@ -181,7 +151,7 @@ static inline int Sbd_CutSetCheckArray( Sbd_Cut_t ** ppCuts, int nCuts ) ...@@ -181,7 +151,7 @@ static inline int Sbd_CutSetCheckArray( Sbd_Cut_t ** ppCuts, int nCuts )
SeeAlso [] SeeAlso []
***********************************************************************/ ***********************************************************************/
static inline int Sbd_CutMergeOrder( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, Sbd_Cut_t * pCut, int nLutSize ) static inline int Sbd_CutMergeOrder( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, Sbd_Cut_t * pCut, int nCutSize )
{ {
int nSize0 = pCut0->nLeaves; int nSize0 = pCut0->nLeaves;
int nSize1 = pCut1->nLeaves; int nSize1 = pCut1->nLeaves;
...@@ -189,14 +159,14 @@ static inline int Sbd_CutMergeOrder( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, Sbd_C ...@@ -189,14 +159,14 @@ static inline int Sbd_CutMergeOrder( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, Sbd_C
int k, * pC1 = pCut1->pLeaves; int k, * pC1 = pCut1->pLeaves;
int c, * pC = pCut->pLeaves; int c, * pC = pCut->pLeaves;
// the case of the largest cut sizes // the case of the largest cut sizes
if ( nSize0 == nLutSize && nSize1 == nLutSize ) if ( nSize0 == nCutSize && nSize1 == nCutSize )
{ {
for ( i = 0; i < nSize0; i++ ) for ( i = 0; i < nSize0; i++ )
{ {
if ( pC0[i] != pC1[i] ) return 0; if ( pC0[i] != pC1[i] ) return 0;
pC[i] = pC0[i]; pC[i] = pC0[i];
} }
pCut->nLeaves = nLutSize; pCut->nLeaves = nCutSize;
pCut->iFunc = -1; pCut->iFunc = -1;
pCut->Sign = pCut0->Sign | pCut1->Sign; pCut->Sign = pCut0->Sign | pCut1->Sign;
return 1; return 1;
...@@ -207,7 +177,7 @@ static inline int Sbd_CutMergeOrder( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, Sbd_C ...@@ -207,7 +177,7 @@ static inline int Sbd_CutMergeOrder( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, Sbd_C
if ( nSize1 == 0 ) goto FlushCut0; if ( nSize1 == 0 ) goto FlushCut0;
while ( 1 ) while ( 1 )
{ {
if ( c == nLutSize ) return 0; if ( c == nCutSize ) return 0;
if ( pC0[i] < pC1[k] ) if ( pC0[i] < pC1[k] )
{ {
pC[c++] = pC0[i++]; pC[c++] = pC0[i++];
...@@ -227,7 +197,7 @@ static inline int Sbd_CutMergeOrder( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, Sbd_C ...@@ -227,7 +197,7 @@ static inline int Sbd_CutMergeOrder( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, Sbd_C
} }
FlushCut0: FlushCut0:
if ( c + nSize0 > nLutSize + i ) return 0; if ( c + nSize0 > nCutSize + i ) return 0;
while ( i < nSize0 ) while ( i < nSize0 )
pC[c++] = pC0[i++]; pC[c++] = pC0[i++];
pCut->nLeaves = c; pCut->nLeaves = c;
...@@ -236,7 +206,7 @@ FlushCut0: ...@@ -236,7 +206,7 @@ FlushCut0:
return 1; return 1;
FlushCut1: FlushCut1:
if ( c + nSize1 > nLutSize + k ) return 0; if ( c + nSize1 > nCutSize + k ) return 0;
while ( k < nSize1 ) while ( k < nSize1 )
pC[c++] = pC1[k++]; pC[c++] = pC1[k++];
pCut->nLeaves = c; pCut->nLeaves = c;
...@@ -244,7 +214,7 @@ FlushCut1: ...@@ -244,7 +214,7 @@ FlushCut1:
pCut->Sign = pCut0->Sign | pCut1->Sign; pCut->Sign = pCut0->Sign | pCut1->Sign;
return 1; return 1;
} }
static inline int Sbd_CutMergeOrder2( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, Sbd_Cut_t * pCut, int nLutSize ) static inline int Sbd_CutMergeOrder2( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, Sbd_Cut_t * pCut, int nCutSize )
{ {
int x0, i0 = 0, nSize0 = pCut0->nLeaves, * pC0 = pCut0->pLeaves; int x0, i0 = 0, nSize0 = pCut0->nLeaves, * pC0 = pCut0->pLeaves;
int x1, i1 = 0, nSize1 = pCut1->nLeaves, * pC1 = pCut1->pLeaves; int x1, i1 = 0, nSize1 = pCut1->nLeaves, * pC1 = pCut1->pLeaves;
...@@ -255,7 +225,7 @@ static inline int Sbd_CutMergeOrder2( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, Sbd_ ...@@ -255,7 +225,7 @@ static inline int Sbd_CutMergeOrder2( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, Sbd_
x1 = (i1 == nSize1) ? ABC_INFINITY : pC1[i1]; x1 = (i1 == nSize1) ? ABC_INFINITY : pC1[i1];
xMin = Abc_MinInt(x0, x1); xMin = Abc_MinInt(x0, x1);
if ( xMin == ABC_INFINITY ) break; if ( xMin == ABC_INFINITY ) break;
if ( c == nLutSize ) return 0; if ( c == nCutSize ) return 0;
pC[c++] = xMin; pC[c++] = xMin;
if (x0 == xMin) i0++; if (x0 == xMin) i0++;
if (x1 == xMin) i1++; if (x1 == xMin) i1++;
...@@ -313,10 +283,30 @@ static inline int Sbd_CutSetLastCutIsContained( Sbd_Cut_t ** pCuts, int nCuts ) ...@@ -313,10 +283,30 @@ static inline int Sbd_CutSetLastCutIsContained( Sbd_Cut_t ** pCuts, int nCuts )
***********************************************************************/ ***********************************************************************/
static inline int Sbd_CutCompare( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1 ) static inline int Sbd_CutCompare( Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1 )
{ {
if ( pCut0->nLeaves < pCut1->nLeaves ) return -1; if ( pCut0->nLeaves <= 4 && pCut1->nLeaves <= 4 )
if ( pCut0->nLeaves > pCut1->nLeaves ) return 1; {
if ( pCut0->Cost < pCut1->Cost ) return -1; if ( pCut0->nLeaves < pCut1->nLeaves ) return -1;
if ( pCut0->Cost > pCut1->Cost ) return 1; if ( pCut0->nLeaves > pCut1->nLeaves ) return 1;
if ( pCut0->Cost < pCut1->Cost ) return -1;
if ( pCut0->Cost > pCut1->Cost ) return 1;
if ( pCut0->CostLev < pCut1->CostLev ) return -1;
if ( pCut0->CostLev > pCut1->CostLev ) return 1;
}
else if ( pCut0->nLeaves <= 4 )
return -1;
else if ( pCut1->nLeaves <= 4 )
return 1;
else
{
if ( pCut0->nTreeLeaves < pCut1->nTreeLeaves ) return -1;
if ( pCut0->nTreeLeaves > pCut1->nTreeLeaves ) return 1;
if ( pCut0->Cost < pCut1->Cost ) return -1;
if ( pCut0->Cost > pCut1->Cost ) return 1;
if ( pCut0->CostLev < pCut1->CostLev ) return -1;
if ( pCut0->CostLev > pCut1->CostLev ) return 1;
if ( pCut0->nLeaves < pCut1->nLeaves ) return -1;
if ( pCut0->nLeaves > pCut1->nLeaves ) return 1;
}
return 0; return 0;
} }
static inline int Sbd_CutSetLastCutContains( Sbd_Cut_t ** pCuts, int nCuts ) static inline int Sbd_CutSetLastCutContains( Sbd_Cut_t ** pCuts, int nCuts )
...@@ -389,24 +379,24 @@ static inline int Sbd_CutComputeTruth6( Sbd_Sto_t * p, Sbd_Cut_t * pCut0, Sbd_Cu ...@@ -389,24 +379,24 @@ static inline int Sbd_CutComputeTruth6( Sbd_Sto_t * p, Sbd_Cut_t * pCut0, Sbd_Cu
} }
static inline int Sbd_CutComputeTruth( Sbd_Sto_t * p, Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, int fCompl0, int fCompl1, Sbd_Cut_t * pCutR, int fIsXor ) static inline int Sbd_CutComputeTruth( Sbd_Sto_t * p, Sbd_Cut_t * pCut0, Sbd_Cut_t * pCut1, int fCompl0, int fCompl1, Sbd_Cut_t * pCutR, int fIsXor )
{ {
if ( p->nLutSize <= 6 ) if ( p->nCutSize <= 6 )
return Sbd_CutComputeTruth6( p, pCut0, pCut1, fCompl0, fCompl1, pCutR, fIsXor ); return Sbd_CutComputeTruth6( p, pCut0, pCut1, fCompl0, fCompl1, pCutR, fIsXor );
{ {
word uTruth[SBD_MAX_TT_WORDS], uTruth0[SBD_MAX_TT_WORDS], uTruth1[SBD_MAX_TT_WORDS]; word uTruth[SBD_MAX_TT_WORDS], uTruth0[SBD_MAX_TT_WORDS], uTruth1[SBD_MAX_TT_WORDS];
int nOldSupp = pCutR->nLeaves, truthId; int nOldSupp = pCutR->nLeaves, truthId;
int nLutSize = p->nLutSize, fCompl; int nCutSize = p->nCutSize, fCompl;
int nWords = Abc_Truth6WordNum(nLutSize); int nWords = Abc_Truth6WordNum(nCutSize);
word * pTruth0 = Sbd_CutTruth(p, pCut0); word * pTruth0 = Sbd_CutTruth(p, pCut0);
word * pTruth1 = Sbd_CutTruth(p, pCut1); word * pTruth1 = Sbd_CutTruth(p, pCut1);
Abc_TtCopy( uTruth0, pTruth0, nWords, Abc_LitIsCompl(pCut0->iFunc) ^ fCompl0 ); Abc_TtCopy( uTruth0, pTruth0, nWords, Abc_LitIsCompl(pCut0->iFunc) ^ fCompl0 );
Abc_TtCopy( uTruth1, pTruth1, nWords, Abc_LitIsCompl(pCut1->iFunc) ^ fCompl1 ); Abc_TtCopy( uTruth1, pTruth1, nWords, Abc_LitIsCompl(pCut1->iFunc) ^ fCompl1 );
Abc_TtExpand( uTruth0, nLutSize, pCut0->pLeaves, pCut0->nLeaves, pCutR->pLeaves, pCutR->nLeaves ); Abc_TtExpand( uTruth0, nCutSize, pCut0->pLeaves, pCut0->nLeaves, pCutR->pLeaves, pCutR->nLeaves );
Abc_TtExpand( uTruth1, nLutSize, pCut1->pLeaves, pCut1->nLeaves, pCutR->pLeaves, pCutR->nLeaves ); Abc_TtExpand( uTruth1, nCutSize, pCut1->pLeaves, pCut1->nLeaves, pCutR->pLeaves, pCutR->nLeaves );
if ( fIsXor ) if ( fIsXor )
Abc_TtXor( uTruth, uTruth0, uTruth1, nWords, (fCompl = (int)((uTruth0[0] ^ uTruth1[0]) & 1)) ); Abc_TtXor( uTruth, uTruth0, uTruth1, nWords, (fCompl = (int)((uTruth0[0] ^ uTruth1[0]) & 1)) );
else else
Abc_TtAnd( uTruth, uTruth0, uTruth1, nWords, (fCompl = (int)((uTruth0[0] & uTruth1[0]) & 1)) ); Abc_TtAnd( uTruth, uTruth0, uTruth1, nWords, (fCompl = (int)((uTruth0[0] & uTruth1[0]) & 1)) );
pCutR->nLeaves = Abc_TtMinBase( uTruth, pCutR->pLeaves, pCutR->nLeaves, nLutSize ); pCutR->nLeaves = Abc_TtMinBase( uTruth, pCutR->pLeaves, pCutR->nLeaves, nCutSize );
assert( (uTruth[0] & 1) == 0 ); assert( (uTruth[0] & 1) == 0 );
//Kit_DsdPrintFromTruth( uTruth, pCutR->nLeaves ), printf("\n" ), printf("\n" ); //Kit_DsdPrintFromTruth( uTruth, pCutR->nLeaves ), printf("\n" ), printf("\n" );
truthId = Vec_MemHashInsert(p->vTtMem, uTruth); truthId = Vec_MemHashInsert(p->vTtMem, uTruth);
...@@ -434,15 +424,12 @@ static inline int Sbd_CutCountBits( word i ) ...@@ -434,15 +424,12 @@ static inline int Sbd_CutCountBits( word i )
i = ((i + (i >> 4)) & 0x0F0F0F0F0F0F0F0F); i = ((i + (i >> 4)) & 0x0F0F0F0F0F0F0F0F);
return (i*(0x0101010101010101))>>56; return (i*(0x0101010101010101))>>56;
} }
static inline void Sbd_CutPrint( Sbd_Sto_t * p, Sbd_Cut_t * pCut ) static inline int Sbd_CutIsSpec( Sbd_Sto_t * p, int iObj, Sbd_Cut_t * pCut )
{ {
int i, nDigits = Abc_Base10Log(Gia_ManObjNum(p->pGia)); int i, Delay = Vec_IntEntry(p->vDelays, iObj), DelayMax = -ABC_INFINITY;
printf( "%d {", pCut->nLeaves );
for ( i = 0; i < (int)pCut->nLeaves; i++ ) for ( i = 0; i < (int)pCut->nLeaves; i++ )
printf( " %*d", nDigits, pCut->pLeaves[i] ); DelayMax = Abc_MaxInt( DelayMax, Vec_IntEntry(p->vDelays, pCut->pLeaves[i]) - Delay );
for ( ; i < (int)p->nLutSize; i++ ) return DelayMax < -1;
printf( " %*s", nDigits, " " );
printf( " } Cost = %4d\n", pCut->Cost );
} }
static inline int Sbd_CutCost( Sbd_Sto_t * p, Sbd_Cut_t * pCut ) static inline int Sbd_CutCost( Sbd_Sto_t * p, Sbd_Cut_t * pCut )
{ {
...@@ -451,7 +438,21 @@ static inline int Sbd_CutCost( Sbd_Sto_t * p, Sbd_Cut_t * pCut ) ...@@ -451,7 +438,21 @@ static inline int Sbd_CutCost( Sbd_Sto_t * p, Sbd_Cut_t * pCut )
Cost += Vec_IntEntry( p->vDelays, pCut->pLeaves[i] ); Cost += Vec_IntEntry( p->vDelays, pCut->pLeaves[i] );
return Cost; return Cost;
} }
static inline void Sbd_CutAddUnitCut( Sbd_Sto_t * p, int iObj ) static inline int Sbd_CutCostLev( Sbd_Sto_t * p, Sbd_Cut_t * pCut )
{
int i, Cost = 0;
for ( i = 0; i < (int)pCut->nLeaves; i++ )
Cost += Vec_IntEntry( p->vLevels, pCut->pLeaves[i] );
return Cost;
}
static inline int Sbd_CutTreeLeaves( Sbd_Sto_t * p, Sbd_Cut_t * pCut )
{
int i, Cost = 0;
for ( i = 0; i < (int)pCut->nLeaves; i++ )
Cost += Vec_IntEntry( p->vRefs, pCut->pLeaves[i] ) == 1;
return Cost;
}
static inline void Sbd_CutAddUnit( Sbd_Sto_t * p, int iObj )
{ {
Vec_Int_t * vThis = Vec_WecEntry( p->vCuts, iObj ); Vec_Int_t * vThis = Vec_WecEntry( p->vCuts, iObj );
if ( Vec_IntSize(vThis) == 0 ) if ( Vec_IntSize(vThis) == 0 )
...@@ -474,7 +475,10 @@ static inline int Sbd_StoPrepareSet( Sbd_Sto_t * p, int iObj, int Index ) ...@@ -474,7 +475,10 @@ static inline int Sbd_StoPrepareSet( Sbd_Sto_t * p, int iObj, int Index )
pCutTemp->pLeaves[v-1] = pCut[v]; pCutTemp->pLeaves[v-1] = pCut[v];
pCutTemp->iFunc = pCut[pCut[0]+1]; pCutTemp->iFunc = pCut[pCut[0]+1];
pCutTemp->Sign = Sbd_CutGetSign( pCutTemp ); pCutTemp->Sign = Sbd_CutGetSign( pCutTemp );
pCutTemp->fSpec = Sbd_CutIsSpec( p, iObj, pCutTemp );
pCutTemp->Cost = Sbd_CutCost( p, pCutTemp ); pCutTemp->Cost = Sbd_CutCost( p, pCutTemp );
pCutTemp->CostLev = Sbd_CutCostLev( p, pCutTemp );
pCutTemp->nTreeLeaves = Sbd_CutTreeLeaves( p, pCutTemp );
} }
return pList[0]; return pList[0];
} }
...@@ -511,18 +515,48 @@ static inline void Sbd_StoComputeDelay( Sbd_Sto_t * p, int iObj, Sbd_Cut_t ** pC ...@@ -511,18 +515,48 @@ static inline void Sbd_StoComputeDelay( Sbd_Sto_t * p, int iObj, Sbd_Cut_t ** pC
DelayMin = Abc_MinInt( DelayMin, Delay ); DelayMin = Abc_MinInt( DelayMin, Delay );
} }
assert( DelayMin < ABC_INFINITY ); assert( DelayMin < ABC_INFINITY );
Vec_IntWriteEntry( p->vDelays, iObj, (nCuts > 1 || pCuts[0]->nLeaves > 1) ? DelayMin + 1 : DelayMin ); DelayMin = (nCuts > 1 || pCuts[0]->nLeaves > 1) ? DelayMin + 1 : DelayMin;
Vec_IntWriteEntry( p->vDelays, iObj, DelayMin );
p->DelayMin = Abc_MaxInt( p->DelayMin, DelayMin );
}
static inline void Sbd_StoComputeSpec( Sbd_Sto_t * p, int iObj, Sbd_Cut_t ** pCuts, int nCuts )
{
int i;
for ( i = 0; i < nCuts; i++ )
{
pCuts[i]->fSpec = Sbd_CutIsSpec( p, iObj, pCuts[i] );
p->nCutsSpec += pCuts[i]->fSpec;
}
}
static inline void Sbd_CutPrint( Sbd_Sto_t * p, int iObj, Sbd_Cut_t * pCut )
{
int i, nDigits = Abc_Base10Log(Gia_ManObjNum(p->pGia));
int Delay = Vec_IntEntry(p->vDelays, iObj);
printf( "%d {", pCut->nLeaves );
for ( i = 0; i < (int)pCut->nLeaves; i++ )
printf( " %*d", nDigits, pCut->pLeaves[i] );
for ( ; i < (int)p->nCutSize; i++ )
printf( " %*s", nDigits, " " );
printf( " } Cost = %4d CostLev = %4d Tree = %2d ", pCut->Cost, pCut->CostLev, pCut->nTreeLeaves );
printf( "%c ", pCut->fSpec ? '*' : ' ' );
for ( i = 0; i < (int)pCut->nLeaves; i++ )
printf( "%3d ", Vec_IntEntry(p->vDelays, pCut->pLeaves[i]) - Delay );
printf( "\n" );
} }
void Sbd_StoMergeCuts( Sbd_Sto_t * p, int iObj ) void Sbd_StoMergeCuts( Sbd_Sto_t * p, int iObj )
{ {
Gia_Obj_t * pObj = Gia_ManObj(p->pGia, iObj); Gia_Obj_t * pObj = Gia_ManObj(p->pGia, iObj);
int fIsXor = Gia_ObjIsXor(pObj); int fIsXor = Gia_ObjIsXor(pObj);
int nLutSize = p->nLutSize; int nCutSize = p->nCutSize;
int nCutNum = p->nCutNum; int nCutNum = p->nCutNum;
int fComp0 = Gia_ObjFaninC0(pObj); int Lit0m = p->vMirrors ? Vec_IntEntry( p->vMirrors, Gia_ObjFaninId0(pObj, iObj) ) : -1;
int fComp1 = Gia_ObjFaninC1(pObj); int Lit1m = p->vMirrors ? Vec_IntEntry( p->vMirrors, Gia_ObjFaninId1(pObj, iObj) ) : -1;
int nCuts0 = Sbd_StoPrepareSet( p, Gia_ObjFaninId0(pObj, iObj), 0 ); int fComp0 = Gia_ObjFaninC0(pObj) ^ (Lit0m >= 0 && Abc_LitIsCompl(Lit0m));
int nCuts1 = Sbd_StoPrepareSet( p, Gia_ObjFaninId1(pObj, iObj), 1 ); int fComp1 = Gia_ObjFaninC1(pObj) ^ (Lit1m >= 0 && Abc_LitIsCompl(Lit1m));
int Fan0 = Lit0m >= 0 ? Abc_Lit2Var(Lit0m) : Gia_ObjFaninId0(pObj, iObj);
int Fan1 = Lit1m >= 0 ? Abc_Lit2Var(Lit1m) : Gia_ObjFaninId1(pObj, iObj);
int nCuts0 = Sbd_StoPrepareSet( p, Fan0, 0 );
int nCuts1 = Sbd_StoPrepareSet( p, Fan1, 1 );
int i, k, nCutsR = 0; int i, k, nCutsR = 0;
Sbd_Cut_t * pCut0, * pCut1, ** pCutsR = p->ppCuts; Sbd_Cut_t * pCut0, * pCut1, ** pCutsR = p->ppCuts;
assert( !Gia_ObjIsBuf(pObj) ); assert( !Gia_ObjIsBuf(pObj) );
...@@ -532,10 +566,10 @@ void Sbd_StoMergeCuts( Sbd_Sto_t * p, int iObj ) ...@@ -532,10 +566,10 @@ void Sbd_StoMergeCuts( Sbd_Sto_t * p, int iObj )
for ( i = 0, pCut0 = p->pCuts[0]; i < nCuts0; i++, pCut0++ ) for ( i = 0, pCut0 = p->pCuts[0]; i < nCuts0; i++, pCut0++ )
for ( k = 0, pCut1 = p->pCuts[1]; k < nCuts1; k++, pCut1++ ) for ( k = 0, pCut1 = p->pCuts[1]; k < nCuts1; k++, pCut1++ )
{ {
if ( (int)(pCut0->nLeaves + pCut1->nLeaves) > nLutSize && Sbd_CutCountBits(pCut0->Sign | pCut1->Sign) > nLutSize ) if ( (int)(pCut0->nLeaves + pCut1->nLeaves) > nCutSize && Sbd_CutCountBits(pCut0->Sign | pCut1->Sign) > nCutSize )
continue; continue;
p->CutCount[1]++; p->CutCount[1]++;
if ( !Sbd_CutMergeOrder(pCut0, pCut1, pCutsR[nCutsR], nLutSize) ) if ( !Sbd_CutMergeOrder(pCut0, pCut1, pCutsR[nCutsR], nCutSize) )
continue; continue;
if ( Sbd_CutSetLastCutIsContained(pCutsR, nCutsR) ) if ( Sbd_CutSetLastCutIsContained(pCutsR, nCutsR) )
continue; continue;
...@@ -543,16 +577,21 @@ void Sbd_StoMergeCuts( Sbd_Sto_t * p, int iObj ) ...@@ -543,16 +577,21 @@ void Sbd_StoMergeCuts( Sbd_Sto_t * p, int iObj )
if ( p->fCutMin && Sbd_CutComputeTruth(p, pCut0, pCut1, fComp0, fComp1, pCutsR[nCutsR], fIsXor) ) if ( p->fCutMin && Sbd_CutComputeTruth(p, pCut0, pCut1, fComp0, fComp1, pCutsR[nCutsR], fIsXor) )
pCutsR[nCutsR]->Sign = Sbd_CutGetSign(pCutsR[nCutsR]); pCutsR[nCutsR]->Sign = Sbd_CutGetSign(pCutsR[nCutsR]);
pCutsR[nCutsR]->Cost = Sbd_CutCost( p, pCutsR[nCutsR] ); pCutsR[nCutsR]->Cost = Sbd_CutCost( p, pCutsR[nCutsR] );
pCutsR[nCutsR]->CostLev = Sbd_CutCostLev( p, pCutsR[nCutsR] );
pCutsR[nCutsR]->nTreeLeaves = Sbd_CutTreeLeaves( p, pCutsR[nCutsR] );
nCutsR = Sbd_CutSetAddCut( pCutsR, nCutsR, nCutNum ); nCutsR = Sbd_CutSetAddCut( pCutsR, nCutsR, nCutNum );
} }
Sbd_StoComputeDelay( p, iObj, pCutsR, nCutsR ); Sbd_StoComputeDelay( p, iObj, pCutsR, nCutsR );
Sbd_StoComputeSpec( p, iObj, pCutsR, nCutsR );
p->CutCount[3] += nCutsR; p->CutCount[3] += nCutsR;
p->nCutsOver += nCutsR == nCutNum-1;
// debug printout // debug printout
if ( 0 ) if ( 0 )
{ {
printf( "*** Obj = %d Delay = %d\n", iObj, Vec_IntEntry(p->vDelays, iObj) ); printf( "*** Obj = %4d Delay = %4d NumCuts = %4d\n", iObj, Vec_IntEntry(p->vDelays, iObj), nCutsR );
for ( i = 0; i < nCutsR; i++ ) for ( i = 0; i < nCutsR; i++ )
Sbd_CutPrint( p, pCutsR[i] ); if ( (int)pCutsR[i]->nLeaves <= p->nLutSize || pCutsR[i]->fSpec )
Sbd_CutPrint( p, iObj, pCutsR[i] );
printf( "\n" ); printf( "\n" );
} }
// verify // verify
...@@ -561,21 +600,12 @@ void Sbd_StoMergeCuts( Sbd_Sto_t * p, int iObj ) ...@@ -561,21 +600,12 @@ void Sbd_StoMergeCuts( Sbd_Sto_t * p, int iObj )
// store the cutset // store the cutset
Sbd_StoStoreResult( p, iObj, pCutsR, nCutsR ); Sbd_StoStoreResult( p, iObj, pCutsR, nCutsR );
if ( nCutsR > 1 || pCutsR[0]->nLeaves > 1 ) if ( nCutsR > 1 || pCutsR[0]->nLeaves > 1 )
Sbd_CutAddUnitCut( p, iObj ); Sbd_CutAddUnit( p, iObj );
}
int Sbd_StoMergeCutsPlus( Sbd_Sto_t * p, int iObj )
{
assert( iObj == Vec_IntSize(p->vDelays) );
assert( iObj == Vec_WecSize(p->vCuts) );
Vec_IntPush( p->vDelays, 0 );
Vec_WecPushLevel( p->vCuts );
Sbd_StoMergeCuts( p, iObj );
return Vec_IntEntry( p->vDelays, iObj );
} }
/**Function************************************************************* /**Function*************************************************************
Synopsis [] Synopsis [Incremental cut computation.]
Description [] Description []
...@@ -584,30 +614,123 @@ int Sbd_StoMergeCutsPlus( Sbd_Sto_t * p, int iObj ) ...@@ -584,30 +614,123 @@ int Sbd_StoMergeCutsPlus( Sbd_Sto_t * p, int iObj )
SeeAlso [] SeeAlso []
***********************************************************************/ ***********************************************************************/
void Sbd_StoComputeCuts( Sbd_Sto_t * p ) Sbd_Sto_t * Sbd_StoAlloc( Gia_Man_t * pGia, Vec_Int_t * vMirrors, int nLutSize, int nCutSize, int nCutNum, int fCutMin, int fVerbose )
{ {
Gia_Obj_t * pObj; Sbd_Sto_t * p;
int i, iObj; assert( nLutSize <= nCutSize );
Gia_ManForEachCiId( p->pGia, iObj, i ) assert( nCutSize < SBD_CUT_NO_LEAF );
Sbd_CutAddUnitCut( p, iObj ); assert( nCutSize > 1 && nCutSize <= SBD_MAX_CUTSIZE );
Gia_ManForEachAnd( p->pGia, pObj, iObj ) assert( nCutNum > 1 && nCutNum < SBD_MAX_CUTNUM );
Sbd_StoMergeCuts( p, iObj ); p = ABC_CALLOC( Sbd_Sto_t, 1 );
if ( !p->fVerbose ) p->clkStart = Abc_Clock();
p->nLutSize = nLutSize;
p->nCutSize = nCutSize;
p->nCutNum = nCutNum;
p->fCutMin = fCutMin;
p->fVerbose = fVerbose;
p->pGia = pGia;
p->vMirrors = vMirrors;
p->vDelays = Vec_IntAlloc( Gia_ManObjNum(pGia) );
p->vLevels = Vec_IntAlloc( Gia_ManObjNum(pGia) );
p->vRefs = Vec_IntAlloc( Gia_ManObjNum(pGia) );
p->vCuts = Vec_WecAlloc( Gia_ManObjNum(pGia) );
p->vTtMem = fCutMin ? Vec_MemAllocForTT( nCutSize, 0 ) : NULL;
return p;
}
void Sbd_StoFree( Sbd_Sto_t * p )
{
Vec_IntFree( p->vDelays );
Vec_IntFree( p->vLevels );
Vec_IntFree( p->vRefs );
Vec_WecFree( p->vCuts );
if ( p->fCutMin )
Vec_MemHashFree( p->vTtMem );
if ( p->fCutMin )
Vec_MemFree( p->vTtMem );
ABC_FREE( p );
}
void Sbd_StoComputeCutsObj( Sbd_Sto_t * p, int iObj, int Delay, int Level )
{
assert( iObj == Vec_IntSize(p->vDelays) );
assert( iObj == Vec_IntSize(p->vLevels) );
assert( iObj == Vec_WecSize(p->vCuts) );
Vec_IntPush( p->vDelays, Delay );
Vec_IntPush( p->vLevels, Level );
Vec_WecPushLevel( p->vCuts );
}
void Sbd_StoComputeCutsCi( Sbd_Sto_t * p, int iObj, int Delay, int Level )
{
Sbd_StoComputeCutsObj( p, iObj, Delay, Level );
Sbd_CutAddUnit( p, iObj );
}
int Sbd_StoComputeCutsNode( Sbd_Sto_t * p, int iObj )
{
Gia_Obj_t * pObj = Gia_ManObj(p->pGia, iObj);
int Lev0 = Vec_IntEntry( p->vLevels, Gia_ObjFaninId0(pObj, iObj) );
int Lev1 = Vec_IntEntry( p->vLevels, Gia_ObjFaninId1(pObj, iObj) );
Sbd_StoComputeCutsObj( p, iObj, -1, 1 + Abc_MaxInt(Lev0, Lev1) );
Sbd_StoMergeCuts( p, iObj );
return Vec_IntEntry( p->vDelays, iObj );
}
void Sbd_StoRefObj( Sbd_Sto_t * p, int iObj, int iMirror )
{
Gia_Obj_t * pObj = Gia_ManObj(p->pGia, iObj);
assert( iObj == Vec_IntSize(p->vRefs) );
assert( iMirror < iObj );
Vec_IntPush( p->vRefs, iMirror > 0 ? Vec_IntEntry(p->vRefs, iMirror) : 0 );
if ( Gia_ObjIsAnd(pObj) )
{
Vec_IntAddToEntry( p->vRefs, Gia_ObjFaninId0(pObj, iObj), 1 );
Vec_IntAddToEntry( p->vRefs, Gia_ObjFaninId1(pObj, iObj), 1 );
}
else if ( Gia_ObjIsCo(pObj) )
Vec_IntAddToEntry( p->vRefs, Gia_ObjFaninId0(pObj, iObj), 1 );
}
void Sbd_StoDerefObj( Sbd_Sto_t * p, int iObj )
{
Gia_Obj_t * pObj = Gia_ManObj(p->pGia, iObj);
Vec_IntAddToEntry( p->vRefs, iObj, -1 );
if ( Vec_IntEntry( p->vRefs, iObj ) > 0 )
return; return;
printf( "CutPair = %.0f ", p->CutCount[0] ); if ( Gia_ObjIsCi(pObj) )
printf( "Merge = %.0f (%.2f %%) ", p->CutCount[1], 100.0*p->CutCount[1]/p->CutCount[0] ); return;
printf( "Eval = %.0f (%.2f %%) ", p->CutCount[2], 100.0*p->CutCount[2]/p->CutCount[0] ); assert( Gia_ObjIsAnd(pObj) );
printf( "Cut = %.0f (%.2f %%) ", p->CutCount[3], 100.0*p->CutCount[3]/p->CutCount[0] ); Sbd_StoDerefObj( p, Gia_ObjFaninId0(pObj, iObj) );
printf( "\n" ); Sbd_StoDerefObj( p, Gia_ObjFaninId1(pObj, iObj) );
} }
void Sbd_StoComputeCutsTest( Gia_Man_t * pGia ) void Sbd_StoComputeCutsTest( Gia_Man_t * pGia )
{ {
Sbd_Sto_t * p = Sbd_StoAlloc( pGia, 8, 32, 1, 1 ); Sbd_Sto_t * p = Sbd_StoAlloc( pGia, NULL, 4, 8, 100, 1, 1 );
Sbd_StoComputeCuts( p ); Gia_Obj_t * pObj;
int i, iObj;
// prepare references
Gia_ManForEachObj( p->pGia, pObj, iObj )
Sbd_StoRefObj( p, iObj, -1 );
// compute cuts
Sbd_StoComputeCutsObj( p, 0, 0, 0 );
Gia_ManForEachCiId( p->pGia, iObj, i )
Sbd_StoComputeCutsCi( p, iObj, 0, 0 );
Gia_ManForEachAnd( p->pGia, pObj, iObj )
Sbd_StoComputeCutsNode( p, iObj );
if ( p->fVerbose )
{
printf( "Running cut computation with LutSize = %d CutSize = %d CutNum = %d:\n", p->nLutSize, p->nCutSize, p->nCutNum );
printf( "CutPair = %.0f ", p->CutCount[0] );
printf( "Merge = %.0f (%.2f %%) ", p->CutCount[1], 100.0*p->CutCount[1]/p->CutCount[0] );
printf( "Eval = %.0f (%.2f %%) ", p->CutCount[2], 100.0*p->CutCount[2]/p->CutCount[0] );
printf( "Cut = %.0f (%.2f %%) ", p->CutCount[3], 100.0*p->CutCount[3]/p->CutCount[0] );
printf( "Cut/Node = %.2f ", p->CutCount[3] / Gia_ManAndNum(p->pGia) );
printf( "\n" );
printf( "Spec = %4d ", p->nCutsSpec );
printf( "Over = %4d ", p->nCutsOver );
printf( "Lev = %4d ", p->DelayMin );
Abc_PrintTime( 0, "Time", Abc_Clock() - p->clkStart );
}
Sbd_StoFree( p ); Sbd_StoFree( p );
} }
//////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////
/// END OF FILE /// /// END OF FILE ///
//////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////
......
src/opt/sbd/sbdInt.h
...@@ -60,6 +60,8 @@ ABC_NAMESPACE_HEADER_START ...@@ -60,6 +60,8 @@ ABC_NAMESPACE_HEADER_START
/// BASIC TYPES /// /// BASIC TYPES ///
//////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////
typedef struct Sbd_Sto_t_ Sbd_Sto_t;
typedef struct Sbd_Str_t_ Sbd_Str_t; typedef struct Sbd_Str_t_ Sbd_Str_t;
struct Sbd_Str_t_ struct Sbd_Str_t_
{ {
...@@ -78,7 +80,14 @@ struct Sbd_Str_t_ ...@@ -78,7 +80,14 @@ struct Sbd_Str_t_
/// FUNCTION DECLARATIONS /// /// FUNCTION DECLARATIONS ///
//////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////
/*=== sbdCnf.c ==========================================================*/ /*=== sbdCut.c ==========================================================*/
extern Sbd_Sto_t * Sbd_StoAlloc( Gia_Man_t * pGia, Vec_Int_t * vMirrors, int nLutSize, int nCutSize, int nCutNum, int fCutMin, int fVerbose );
extern void Sbd_StoFree( Sbd_Sto_t * p );
extern void Sbd_StoRefObj( Sbd_Sto_t * p, int iObj, int iMirror );
extern void Sbd_StoDefefObj( Sbd_Sto_t * p, int iObj );
extern void Sbd_StoComputeCutsObj( Sbd_Sto_t * p, int iObj, int Delay, int Level );
extern void Sbd_StoComputeCutsCi( Sbd_Sto_t * p, int iObj, int Delay, int Level );
extern int Sbd_StoComputeCutsNode( Sbd_Sto_t * p, int iObj );
ABC_NAMESPACE_HEADER_END ABC_NAMESPACE_HEADER_END
......
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