luke
/
abc
mirror of https://github.com/YosysHQ/abc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

DSD manager.

This commit is contained in:
Alan Mishchenko 2012-11-19 23:42:05 -08:00
parent d671adbb86
commit ffbe3bc576
8 changed files with 525 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/base/abci/abc.c
View File

@ -14890,6 +14890,13 @@ int Abc_CommandIf( Abc_Frame_t * pAbc, int argc, char ** argv )
pPars->nLutSize = pPars->nGateSize;
}
if ( pPars->fUseDsd )
{
pPars->fTruth = 1;
pPars->fCutMin = 1;
pPars->fUsePerm = 1;
}
if ( pPars->fUserRecLib )
{
if ( Abc_NtkRecIsRunning() + Abc_NtkRecIsRunning2() + Abc_NtkRecIsRunning3() != 1 )
@ -27461,6 +27468,13 @@ int Abc_CommandAbc9If( Abc_Frame_t * pAbc, int argc, char ** argv )
pPars->nLutSize = pPars->nGateSize;
}
if ( pPars->fUseDsd )
{
pPars->fTruth = 1;
pPars->fCutMin = 1;
pPars->fUsePerm = 1;
}
// complain if truth tables are requested but the cut size is too large
if ( pPars->fTruth && pPars->nLutSize > IF_MAX_FUNC_LUTSIZE )
{

6
src/map/if/if.h
View File

@ -35,7 +35,7 @@
#include "misc/mem/mem.h"
#include "misc/tim/tim.h"
#include "misc/util/utilNam.h"
#include "opt/dau/dau.h"
ABC_NAMESPACE_HEADER_START
@ -189,6 +189,7 @@ struct If_Man_t_
Vec_Int_t * vSwitching; // switching activity of each node
Vec_Int_t ** pDriverCuts; // temporary driver cuts
int pPerm[3][IF_MAX_LUTSIZE]; // permutations
unsigned uSharedMask; // mask of shared variables
int nShared; // the number of shared variables
// SOP balancing
Vec_Int_t * vCover; // used to compute ISOP
@ -218,8 +219,9 @@ struct If_Man_t_
int nCutsCount[32];
int nCutsCountAll;
int nCutsUselessAll;
Abc_Nam_t * pNamDsd;
// Abc_Nam_t * pNamDsd;
int iNamVar;
Dss_Man_t * pDsdMan;
// timing manager
Tim_Man_t * pManTim;

3
src/map/if/ifCut.c
View File

@ -418,11 +418,13 @@ int If_CutMerge( If_Man_t * p, If_Cut_t * pC0, If_Cut_t * pC1, If_Cut_t * pC )
p->nShared = nLimit;
pC->nLeaves = nLimit;
pC->uSign = pC0->uSign | pC1->uSign;
p->uSharedMask = Abc_InfoMask( nLimit );
return 1;
}
// compare two cuts with different numbers
i = k = c = s = 0;
p->uSharedMask = 0;
while ( 1 )
{
if ( c == nLimit ) return 0;
@ -440,6 +442,7 @@ int If_CutMerge( If_Man_t * p, If_Cut_t * pC0, If_Cut_t * pC1, If_Cut_t * pC )
}
else
{
p->uSharedMask |= (1 << c);
p->pPerm[0][i] = p->pPerm[1][k] = p->pPerm[2][s++] = c;
pC->pLeaves[c++] = pC0->pLeaves[i++]; k++;
if ( i == nSizeC0 ) goto FlushCut1;

17
src/map/if/ifMan.c
View File

@ -83,8 +83,10 @@ If_Man_t * If_ManStart( If_Par_t * pPars )
p->pCutTemp = (If_Cut_t *)ABC_ALLOC( char, p->nCutBytes );
if ( pPars->fUseDsd )
{
p->pNamDsd = Abc_NamStart( 1000, 20 );
p->iNamVar = Abc_NamStrFindOrAdd( p->pNamDsd, "a", NULL );
// p->pNamDsd = Abc_NamStart( 1000, 20 );
// p->iNamVar = Abc_NamStrFindOrAdd( p->pNamDsd, "a", NULL );
p->pDsdMan = Dss_ManAlloc( pPars->nLutSize );
p->iNamVar = 2;
}
// create the constant node
@ -150,8 +152,9 @@ void If_ManStop( If_Man_t * p )
Abc_Print( 1, "Useless cuts %2d = %9d (out of %9d) (%6.2f %%)\n", i, p->nCutsUseless[i], p->nCutsCount[i], 100.0*p->nCutsUseless[i]/(p->nCutsCount[i]+1) );
Abc_Print( 1, "Useless cuts all = %9d (out of %9d) (%6.2f %%)\n", p->nCutsUselessAll, p->nCutsCountAll, 100.0*p->nCutsUselessAll/(p->nCutsCountAll+1) );
}
if ( p->pNamDsd )
if ( p->pPars->fUseDsd )
{
/*
if ( p->pPars->fVerbose )
Abc_Print( 1, "Number of unique entries in the DSD table = %d. Memory = %.1f MB.\n",
Abc_NamObjNumMax(p->pNamDsd), 1.0*Abc_NamMemAlloc(p->pNamDsd)/(1<<20) );
@ -161,6 +164,8 @@ void If_ManStop( If_Man_t * p )
Abc_PrintTime( 1, "Time3", s_TimeComp[3] );
// Abc_NamPrint( p->pNamDsd );
Abc_NamStop( p->pNamDsd );
*/
Dss_ManFree( p->pDsdMan );
}
// Abc_PrintTime( 1, "Truth", p->timeTruth );
// Abc_Print( 1, "Small support = %d.\n", p->nSmallSupp );
@ -427,7 +432,11 @@ void If_ManSetupCutTriv( If_Man_t * p, If_Cut_t * pCut, int ObjId )
pCut->nLeaves = 1;
pCut->pLeaves[0] = p->pPars->fLiftLeaves? (ObjId << 8) : ObjId;
pCut->uSign = If_ObjCutSign( pCut->pLeaves[0] );
pCut->iDsd = p->iNamVar;
if ( p->pPars->fUseDsd )
{
pCut->iDsd = p->iNamVar;
pCut->pPerm[0] = 0;
}
// set up elementary truth table of the unit cut
if ( p->pPars->fTruth )
{

19
src/map/if/ifMap.c
View File

@ -277,6 +277,10 @@ void If_ObjPerformMappingAnd( If_Man_t * p, If_Obj_t * pObj, int Mode, int fPrep
}
if ( p->pPars->fUseDsd )
{
int j, iDsd[2] = { Abc_LitNotCond(pCut0->iDsd, pObj->fCompl0), Abc_LitNotCond(pCut1->iDsd, pObj->fCompl1) };
int nFans[2] = { pCut0->nLeaves, pCut1->nLeaves };
int Fans[2][DAU_MAX_VAR], * pFans[2] = { Fans[0], Fans[1] };
/*
char * pName = Dau_DsdMerge(
Abc_NamStr(p->pNamDsd, pCut0->iDsd),
If_CutPerm0(pCut, pCut0),
@ -284,6 +288,21 @@ void If_ObjPerformMappingAnd( If_Man_t * p, If_Obj_t * pObj, int Mode, int fPrep
If_CutPerm1(pCut, pCut1),
pObj->fCompl0, pObj->fCompl1, pCut->nLimit );
pCut->iDsd = Abc_NamStrFindOrAdd( p->pNamDsd, pName, NULL );
*/
// create fanins
for ( j = 0; j < (int)pCut0->nLeaves; j++ )
pFans[0][j] = Abc_Lit2Lit( p->pPerm[0], (int)pCut0->pPerm[j] );
for ( j = 0; j < (int)pCut1->nLeaves; j++ )
pFans[1][j] = Abc_Lit2Lit( p->pPerm[1], (int)pCut1->pPerm[j] );
// canonicize
if ( iDsd[0] > iDsd[1] )
{
ABC_SWAP( int, iDsd[0], iDsd[1] );
ABC_SWAP( int, nFans[0], nFans[1] );
ABC_SWAP( int *, pFans[0], pFans[1] );
}
// derive new DSD
pCut->iDsd = Dss_ManMerge( p->pDsdMan, iDsd, nFans, pFans, p->uSharedMask, pCut->nLimit, pCut->pPerm );
}
// compute the application-specific cost and depth

1
src/misc/util/abc_global.h
View File

@ -257,6 +257,7 @@ static inline int Abc_LitIsCompl( int Lit ) { return Lit & 1;
static inline int Abc_LitNot( int Lit ) { return Lit ^ 1; }
static inline int Abc_LitNotCond( int Lit, int c ) { return Lit ^ (int)(c > 0); }
static inline int Abc_LitRegular( int Lit ) { return Lit & ~01; }
static inline int Abc_Lit2Lit( int * pMap, int Lit ) { return Abc_Var2Lit( pMap[Abc_Lit2Var(Lit)], Abc_LitIsCompl(Lit) ); }
enum Abc_VerbLevel
{

6
src/opt/dau/dau.h
View File

@ -87,6 +87,12 @@ extern int Dau_DsdCountAnds( char * pDsd );
extern void Dau_DsdRemoveBraces( char * pDsd, int * pMatches );
extern char * Dau_DsdMerge( char * pDsd0i, int * pPerm0, char * pDsd1i, int * pPerm1, int fCompl0, int fCompl1, int nVars );
/*=== dauMerge.c ==========================================================*/
extern Dss_Man_t * Dss_ManAlloc( int nVars );
extern void Dss_ManFree( Dss_Man_t * p );
extern int Dss_ManMerge( Dss_Man_t * p, int * iDsd, int * nFans, int ** pFans, unsigned uSharedMask, int nKLutSize, unsigned char * pPerm );
ABC_NAMESPACE_HEADER_END

483
src/opt/dau/dauTree.c
View File

@ -20,6 +20,7 @@
#include "dauInt.h"
#include "misc/mem/mem.h"
#include "misc/util/utilTruth.h"
ABC_NAMESPACE_IMPL_START
@ -27,6 +28,26 @@ ABC_NAMESPACE_IMPL_START
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
typedef struct Dss_Fun_t_ Dss_Fun_t;
struct Dss_Fun_t_
{
unsigned iDsd : 27; // DSD literal
unsigned nFans : 5; // fanin count
unsigned char pFans[0]; // fanins
};
typedef struct Dss_Ent_t_ Dss_Ent_t;
struct Dss_Ent_t_
{
Dss_Fun_t * pFunc;
Dss_Ent_t * pNext;
unsigned iDsd0 : 27; // dsd entry
unsigned nWords : 5; // total word count (struct + shared)
unsigned iDsd1 : 27; // dsd entry
unsigned nShared: 5; // shared count
unsigned char pShared[0]; // shared literals
};
typedef struct Dss_Obj_t_ Dss_Obj_t;
struct Dss_Obj_t_
{
@ -62,6 +83,8 @@ struct Dss_Man_t_
Mem_Flex_t * pMem; // memory for nodes
Vec_Ptr_t * vObjs; // objects
Vec_Int_t * vLeaves; // temp
Vec_Int_t * vCopies; // temp
word ** pTtElems; // elementary TTs
};
static inline Dss_Obj_t * Dss_Regular( Dss_Obj_t * p ) { return (Dss_Obj_t *)((ABC_PTRUINT_T)(p) & ~01); }
@ -72,6 +95,7 @@ static inline int Dss_IsComplement( Dss_Obj_t * p )
static inline void Dss_ObjClean( Dss_Obj_t * pObj ) { memset( pObj, 0, sizeof(Dss_Obj_t) ); }
static inline int Dss_ObjId( Dss_Obj_t * pObj ) { return pObj->Id; }
static inline int Dss_ObjType( Dss_Obj_t * pObj ) { return pObj->Type; }
static inline int Dss_ObjSuppSize( Dss_Obj_t * pObj ) { return pObj->nSupp; }
static inline int Dss_ObjFaninNum( Dss_Obj_t * pObj ) { return pObj->nFans; }
static inline int Dss_ObjFaninC( Dss_Obj_t * pObj, int i ) { assert(i < (int)pObj->nFans); return Abc_LitIsCompl(pObj->pFans[i]); }
static inline word * Dss_ObjTruth( Dss_Obj_t * pObj ) { return (word *)(pObj->pFans + pObj->nFans + (pObj->nFans & 1)); }
@ -87,12 +111,18 @@ static inline Dss_Obj_t * Dss_ObjChildNtk( Dss_Ntk_t * p, Dss_Obj_t * pObj,int
static inline Dss_Obj_t * Dss_ManObj( Dss_Man_t * p, int Id ) { return (Dss_Obj_t *)Vec_PtrEntry(p->vObjs, Id); }
static inline Dss_Obj_t * Dss_ManConst0( Dss_Man_t * p ) { return Dss_ManObj( p, 0 ); }
static inline Dss_Obj_t * Dss_ManVar( Dss_Man_t * p, int v ) { assert( v >= 0 && v < p->nVars ); return Dss_ManObj( p, v+1 ); }
static inline int Dss_ManLitSuppSize( Dss_Man_t * p, int iLit ) { return Dss_ManObj( p, Abc_Lit2Var(iLit) )->nSupp; }
static inline int Dss_Obj2Lit( Dss_Obj_t * pObj ) { return Abc_Var2Lit(Dss_Regular(pObj)->Id, Dss_IsComplement(pObj)); }
static inline Dss_Obj_t * Dss_Lit2Obj( Dss_Man_t * p, int iLit ) { return Dss_NotCond(Dss_ManObj(p, Abc_Lit2Var(iLit)), Abc_LitIsCompl(iLit)); }
static inline Dss_Obj_t * Dss_ObjFanin( Dss_Man_t * p, Dss_Obj_t * pObj, int i ) { assert(i < (int)pObj->nFans); return Dss_ManObj(p, Abc_Lit2Var(pObj->pFans[i])); }
static inline Dss_Obj_t * Dss_ObjChild( Dss_Man_t * p, Dss_Obj_t * pObj, int i ) { assert(i < (int)pObj->nFans); return Dss_Lit2Obj(p, pObj->pFans[i]); }
static inline int Dss_EntWordNum( Dss_Ent_t * p ) { return sizeof(Dss_Ent_t) / 8 + p->nShared / 4 + ((p->nShared & 3) > 0); }
static inline int Dss_FunWordNum( Dss_Fun_t * p ) { assert(p->nFans >= 2); return (p->nFans + 4) / 8 + (((p->nFans + 4) & 7) > 0); }
static inline word * Dss_FunTruth( Dss_Fun_t * p ) { assert(p->nFans >= 2); return (word *)p + Dss_FunWordNum(p); }
#define Dss_NtkForEachNode( p, pObj, i ) \
Vec_PtrForEachEntryStart( Dss_Obj_t *, p->vObjs, pObj, i, p->nVars + 1 )
#define Dss_ObjForEachFaninNtk( p, pObj, pFanin, i ) \
@ -109,11 +139,46 @@ static inline Dss_Obj_t * Dss_ObjChild( Dss_Man_t * p, Dss_Obj_t * pObj, int i
#define Dss_ObjForEachChild( p, pObj, pFanin, i ) \
for ( i = 0; (i < Dss_ObjFaninNum(pObj)) && ((pFanin) = Dss_ObjChild(p, pObj, i)); i++ )
static inline int Dss_WordCountOnes( unsigned uWord )
{
uWord = (uWord & 0x55555555) + ((uWord>>1) & 0x55555555);
uWord = (uWord & 0x33333333) + ((uWord>>2) & 0x33333333);
uWord = (uWord & 0x0F0F0F0F) + ((uWord>>4) & 0x0F0F0F0F);
uWord = (uWord & 0x00FF00FF) + ((uWord>>8) & 0x00FF00FF);
return (uWord & 0x0000FFFF) + (uWord>>16);
}
static inline int Dss_Lit2Lit( int * pMapLit, int Lit ) { return Abc_Var2Lit( Abc_Lit2Var(pMapLit[Abc_Lit2Var(Lit)]), Abc_LitIsCompl(Lit) ^ Abc_LitIsCompl(pMapLit[Abc_Lit2Var(Lit)]) ); }
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Elementary truth tables.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline word ** Dss_ManTtElems()
{
static word TtElems[DAU_MAX_VAR+1][DAU_MAX_WORD], * pTtElems[DAU_MAX_VAR+1] = {NULL};
if ( pTtElems[0] == NULL )
{
int v;
for ( v = 0; v <= DAU_MAX_VAR; v++ )
pTtElems[v] = TtElems[v];
Abc_TtElemInit( pTtElems, DAU_MAX_VAR );
}
return pTtElems;
}
/**Function*************************************************************
Synopsis [Creating DSD network.]
@ -387,11 +452,29 @@ void Dss_NtkCheck( Dss_Ntk_t * p )
}
}
}
void Dss_NtkTransform( Dss_Ntk_t * p )
int Dss_NtkCollectPerm_rec( Dss_Ntk_t * p, Dss_Obj_t * pObj, int * pPermDsd, int * pnPerms )
{
Dss_Obj_t * pChild;
int k, fCompl = Dss_IsComplement(pObj);
pObj = Dss_Regular( pObj );
if ( pObj->Type == DAU_DSD_VAR )
{
pPermDsd[*pnPerms] = Abc_Var2Lit(pObj->iVar, fCompl);
pObj->iVar = (*pnPerms)++;
return fCompl;
}
Dss_ObjForEachChildNtk( p, pObj, pChild, k )
if ( Dss_NtkCollectPerm_rec( p, pChild, pPermDsd, pnPerms ) )
pObj->pFans[k] = (unsigned char)Abc_LitRegular((int)pObj->pFans[k]);
return 0;
}
void Dss_NtkTransform( Dss_Ntk_t * p, int * pPermDsd )
{
Dss_Obj_t * pChildren[DAU_MAX_VAR];
Dss_Obj_t * pObj, * pChild;
int i, k;
int i, k, nPerms;
if ( Dss_Regular(p->pRoot)->Type == DAU_DSD_CONST0 )
return;
Dss_NtkForEachNode( p, pObj, i )
{
Dss_ObjForEachChildNtk( p, pObj, pChild, k )
@ -400,6 +483,10 @@ void Dss_NtkTransform( Dss_Ntk_t * p )
for ( k = 0; k < Dss_ObjFaninNum(pObj); k++ )
pObj->pFans[k] = Dss_Obj2Lit( pChildren[k] );
}
nPerms = 0;
if ( Dss_NtkCollectPerm_rec( p, p->pRoot, pPermDsd, &nPerms ) )
p->pRoot = Dss_Regular(p->pRoot);
assert( nPerms == (int)Dss_Regular(p->pRoot)->nSupp );
}
/**Function*************************************************************
@ -447,7 +534,7 @@ int Dss_ObjCompare( Dss_Man_t * p, Dss_Obj_t * p0i, Dss_Obj_t * p1i )
return 1;
return 0;
}
void Dss_ObjSort( Dss_Man_t * p, Dss_Obj_t ** pNodes, int nNodes )
void Dss_ObjSort( Dss_Man_t * p, Dss_Obj_t ** pNodes, int nNodes, int * pPerm )
{
int i, j, best_i;
for ( i = 0; i < nNodes-1; i++ )
@ -459,6 +546,8 @@ void Dss_ObjSort( Dss_Man_t * p, Dss_Obj_t ** pNodes, int nNodes )
if ( i == best_i )
continue;
ABC_SWAP( Dss_Obj_t *, pNodes[i], pNodes[best_i] );
if ( pPerm )
ABC_SWAP( int, pPerm[i], pPerm[best_i] );
}
}
@ -590,18 +679,21 @@ Dss_Man_t * Dss_ManAlloc( int nVars )
pObj->Mirror = 1;
}
p->vLeaves = Vec_IntAlloc( 32 );
p->vCopies = Vec_IntAlloc( 32 );
p->pTtElems = Dss_ManTtElems();
return p;
}
void Dss_ManFree( Dss_Man_t * p )
{
Vec_IntFreeP( &p->vCopies );
Vec_IntFreeP( &p->vLeaves );
Vec_PtrFreeP( &p->vObjs );
Mem_FlexStop( p->pMem, 0 );
ABC_FREE( p->pBins );
ABC_FREE( p );
}
void Dss_ManPrint_rec( Dss_Man_t * p, Dss_Obj_t * pObj )
void Dss_ManPrint_rec( Dss_Man_t * p, Dss_Obj_t * pObj, int * pPermLits )
{
char OpenType[7] = {0, 0, 0, '(', '[', '<', '{'};
char CloseType[7] = {0, 0, 0, ')', ']', '>', '}'};
@ -611,20 +703,25 @@ void Dss_ManPrint_rec( Dss_Man_t * p, Dss_Obj_t * pObj )
if ( pObj->Type == DAU_DSD_CONST0 )
{ printf( "0" ); return; }
if ( pObj->Type == DAU_DSD_VAR )
{ printf( "%c", 'a' + pObj->iVar ); return; }
{
int iPermLit = pPermLits ? pPermLits[pObj->iVar] : Abc_Var2Lit(pObj->iVar, 0);
printf( "%s%c", Abc_LitIsCompl(iPermLit)? "!":"", 'a' + Abc_Lit2Var(iPermLit) );
return;
}
printf( "%c", OpenType[pObj->Type] );
Dss_ObjForEachFanin( p, pObj, pFanin, i )
{
printf( "%s", Dss_ObjFaninC(pObj, i) ? "!":"" );
Dss_ManPrint_rec( p, pFanin );
Dss_ManPrint_rec( p, pFanin, pPermLits );
}
printf( "%c", CloseType[pObj->Type] );
}
void Dss_ManPrintOne( Dss_Man_t * p, Dss_Obj_t * pObj )
void Dss_ManPrintOne( Dss_Man_t * p, int iDsdLit, int * pPermLits )
{
printf( "%6d : ", Dss_ObjId(pObj) );
printf( "%2d ", pObj->nSupp );
Dss_ManPrint_rec( p, pObj );
printf( "%6d : ", Abc_Lit2Var(iDsdLit) );
printf( "%2d ", Dss_ManLitSuppSize(p, iDsdLit) );
printf( "%s", Abc_LitIsCompl(iDsdLit) ? "!" : "" );
Dss_ManPrint_rec( p, Dss_ManObj(p, Abc_Lit2Var(iDsdLit)), pPermLits );
printf( "\n" );
}
void Dss_ManPrintAll( Dss_Man_t * p )
@ -636,12 +733,124 @@ void Dss_ManPrintAll( Dss_Man_t * p )
{
if ( (int)pObj->nSupp < nSuppMax )
continue;
Dss_ManPrintOne( p, pObj );
Dss_ManPrintOne( p, Dss_Obj2Lit(pObj), NULL );
nSuppMax = Abc_MaxInt( nSuppMax, pObj->nSupp );
}
printf( "\n" );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Dss_NtkRebuild( Dss_Man_t * p, Dss_Ntk_t * pNtk )
{
Dss_Obj_t * pObj, * pFanin, * pObjNew;
int i, k;
assert( p->nVars == pNtk->nVars );
if ( Dss_Regular(pNtk->pRoot)->Type == DAU_DSD_CONST0 )
return Dss_IsComplement(pNtk->pRoot);
if ( Dss_Regular(pNtk->pRoot)->Type == DAU_DSD_VAR )
return Abc_Var2Lit( Dss_Regular(pNtk->pRoot)->iVar, Dss_IsComplement(pNtk->pRoot) );
Vec_IntFill( p->vCopies, Vec_PtrSize(pNtk->vObjs), -1 );
Dss_NtkForEachNode( pNtk, pObj, i )
{
Vec_IntClear( p->vLeaves );
Dss_ObjForEachFaninNtk( pNtk, pObj, pFanin, k )
if ( pFanin->Type == DAU_DSD_VAR )
Vec_IntPush( p->vLeaves, Abc_Var2Lit(pFanin->iVar+1, 0) );
else
Vec_IntPush( p->vLeaves, Abc_Lit2Lit(Vec_IntArray(p->vCopies), pObj->pFans[k]) );
pObjNew = Dss_ObjCreate( p, pObj->Type, p->vLeaves );
Vec_IntWriteEntry( p->vCopies, Dss_ObjId(pObj), Dss_ObjId(pObjNew) );
}
return Abc_Lit2Lit( Vec_IntArray(p->vCopies), Dss_Obj2Lit(pNtk->pRoot) );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Dss_ManComputeTruth_rec( Dss_Man_t * p, Dss_Obj_t * pObj, int nVars, word * pRes, int * pPermLits )
{
Dss_Obj_t * pChild;
int nWords = Abc_TtWordNum(nVars);
int i, fCompl = Dss_IsComplement(pObj);
pObj = Dss_Regular(pObj);
if ( pObj->Type == DAU_DSD_VAR )
{
int iPermLit = pPermLits[(int)pObj->iVar];
assert( (int)pObj->iVar < nVars );
Abc_TtCopy( pRes, p->pTtElems[Abc_Lit2Var(iPermLit)], nWords, fCompl ^ Abc_LitIsCompl(iPermLit) );
return;
}
if ( pObj->Type == DAU_DSD_AND || pObj->Type == DAU_DSD_XOR )
{
word pTtTemp[DAU_MAX_WORD];
if ( pObj->Type == DAU_DSD_AND )
Abc_TtConst1( pRes, nWords );
else
Abc_TtConst0( pRes, nWords );
Dss_ObjForEachChild( p, pObj, pChild, i )
{
Dss_ManComputeTruth_rec( p, pChild, nVars, pTtTemp, pPermLits );
if ( pObj->Type == DAU_DSD_AND )
Abc_TtAnd( pRes, pRes, pTtTemp, nWords, 0 );
else
Abc_TtXor( pRes, pRes, pTtTemp, nWords, 0 );
}
if ( fCompl ) Abc_TtNot( pRes, nWords );
return;
}
if ( pObj->Type == DAU_DSD_MUX ) // mux
{
word pTtTemp[3][DAU_MAX_WORD];
Dss_ObjForEachChild( p, pObj, pChild, i )
Dss_ManComputeTruth_rec( p, pChild, nVars, pTtTemp[i], pPermLits );
assert( i == 3 );
Abc_TtMux( pRes, pTtTemp[0], pTtTemp[1], pTtTemp[2], nWords );
if ( fCompl ) Abc_TtNot( pRes, nWords );
return;
}
if ( pObj->Type == DAU_DSD_PRIME ) // function
{
}
assert( 0 );
}
word * Dss_ManComputeTruth( Dss_Man_t * p, int iDsd, int nVars, int * pPermLits )
{
int nWords = Abc_TtWordNum( nVars );
word * pRes = p->pTtElems[DAU_MAX_VAR];
assert( nVars <= DAU_MAX_VAR );
if ( iDsd == 0 )
Abc_TtConst0( pRes, nWords );
else if ( iDsd == 1 )
Abc_TtConst1( pRes, nWords );
else if ( Abc_Lit2Var(iDsd) < p->nVars )
{
int iPermLit = pPermLits[Abc_Lit2Var(iDsd)];
Abc_TtCopy( pRes, p->pTtElems[Abc_Lit2Var(iPermLit)], nWords, Abc_LitIsCompl(iDsd) ^ Abc_LitIsCompl(iPermLit) );
}
else
Dss_ManComputeTruth_rec( p, Dss_Lit2Obj(p, iDsd), nVars, pRes, pPermLits );
return pRes;
}
/**Function*************************************************************
@ -701,22 +910,53 @@ void Dss_ManShiftTree( Dss_Man_t * p, Dss_Obj_t ** pChildren, int nChildren, Vec
/**Function*************************************************************
Synopsis []
Synopsis [Performs DSD operation on the two literals.]
Description []
Description [Returns the perm of the resulting literals. The perm size
is equal to the number of support variables. The perm variables are 0-based
numbers of pLits[0] followed by nLits[0]-based numbers of pLits[1].]
SideEffects []
SeeAlso []
***********************************************************************/
int Dss_ManOperation( Dss_Man_t * p, int Type, int * pLits, int nLits, int * pPerm )
int Dss_ManOperation( Dss_Man_t * p, int Type, int * pLits, int nLits, unsigned char * pPerm )
{
Dss_Obj_t * pChildren[DAU_MAX_VAR];
Dss_Obj_t * pObj, * pChild;
int i, k, nChildren = 0, fCompl = 0, nSupp = 0;
int i, k, nChildren = 0, fCompl = 0;
if ( Type == DAU_DSD_AND )
assert( Type == DAU_DSD_AND || pPerm == NULL );
if ( Type == DAU_DSD_AND && pPerm != NULL )
{
int pBegEnd[DAU_MAX_VAR];
int j, nSSize = 0;
for ( k = 0; k < nLits; k++ )
{
pObj = Dss_Lit2Obj(p, pLits[k]);
if ( Dss_IsComplement(pObj) || pObj->Type != DAU_DSD_AND )
{
pBegEnd[nChildren] = (nSSize << 16) | (nSSize + Dss_Regular(pObj)->nSupp);
nSSize += Dss_Regular(pObj)->nSupp;
pChildren[nChildren++] = pObj;
}
else
Dss_ObjForEachChild( p, pObj, pChild, i )
{
pBegEnd[nChildren] = (nSSize << 16) | (nSSize + Dss_Regular(pChild)->nSupp);
nSSize += Dss_Regular(pChild)->nSupp;
pChildren[nChildren++] = pChild;
}
}
Dss_ObjSort( p, pChildren, nChildren, pBegEnd );
// create permutation
for ( j = i = 0; i < nChildren; i++ )
for ( k = (pBegEnd[i] >> 16); k < (pBegEnd[i] & 0xFF); k++ )
pPerm[j++] = (unsigned char)Abc_Var2Lit( k, 0 );
assert( j == nSSize );
}
else if ( Type == DAU_DSD_AND )
{
for ( k = 0; k < nLits; k++ )
{
@ -727,7 +967,7 @@ int Dss_ManOperation( Dss_Man_t * p, int Type, int * pLits, int nLits, int * pPe
Dss_ObjForEachChild( p, pObj, pChild, i )
pChildren[nChildren++] = pChild;
}
Dss_ObjSort( p, pChildren, nChildren );
Dss_ObjSort( p, pChildren, nChildren, NULL );
}
else if ( Type == DAU_DSD_XOR )
{
@ -744,7 +984,7 @@ int Dss_ManOperation( Dss_Man_t * p, int Type, int * pLits, int nLits, int * pPe
pChildren[nChildren++] = pChild;
}
}
Dss_ObjSort( p, pChildren, nChildren );
Dss_ObjSort( p, pChildren, nChildren, NULL );
}
else if ( Type == DAU_DSD_MUX )
{
@ -776,6 +1016,164 @@ int Dss_ManOperation( Dss_Man_t * p, int Type, int * pLits, int nLits, int * pPe
pObj->Mirror = pObj->Id;
return Abc_Var2Lit( pObj->Id, fCompl );
}
Dss_Fun_t * Dss_ManOperationFun( Dss_Man_t * p, int * iDsd, int * nFans )
{
static char Buffer[100];
Dss_Fun_t * pFun = (Dss_Fun_t *)Buffer;
pFun->iDsd = Dss_ManOperation( p, DAU_DSD_AND, iDsd, 2, pFun->pFans );
pFun->nFans = nFans[0] + nFans[1];
assert( (int)pFun->nFans == Dss_ManLitSuppSize(p, pFun->iDsd) );
return pFun;
}
/**Function*************************************************************
Synopsis [Performs AND on two DSD functions with support overlap.]
Description [Returns the perm of the resulting literals. The perm size
is equal to the number of support variables. The perm variables are 0-based
numbers of pLits[0] followed by nLits[0]-based numbers of pLits[1].]
SideEffects []
SeeAlso []
***********************************************************************/
Dss_Fun_t * Dss_ManBooleanAnd( Dss_Man_t * p, Dss_Ent_t * pEnt, int * nFans )
{
static char Buffer[100];
Dss_Fun_t * pFun = (Dss_Fun_t *)Buffer;
Dss_Ntk_t * pNtk;
word * pTruthOne, pTruth[DAU_MAX_WORD];
char pDsd[DAU_MAX_STR];
int pMapDsd2Truth[DAU_MAX_VAR];
int pPermLits[DAU_MAX_VAR];
int pPermDsd[DAU_MAX_VAR];
int i, nNonDec, nSuppSize = 0;
// create first truth table
for ( i = 0; i < nFans[0]; i++ )
{
pMapDsd2Truth[nSuppSize] = i;
pPermLits[i] = Abc_Var2Lit( nSuppSize++, 0 );
}
pTruthOne = Dss_ManComputeTruth( p, pEnt->iDsd0, p->nVars, pPermLits );
Abc_TtCopy( pTruth, pTruthOne, Abc_TtWordNum(p->nVars), 0 );
//Kit_DsdPrintFromTruth( pTruthOne, p->nVars ); printf( "\n" );
// create second truth table
for ( i = 0; i < nFans[1]; i++ )
pPermLits[i] = -1;
for ( i = 0; i < (int)pEnt->nShared; i++ )
pPermLits[pEnt->pShared[2*i+0]] = pEnt->pShared[2*i+1];
for ( i = 0; i < nFans[1]; i++ )
if ( pPermLits[i] == -1 )
{
pMapDsd2Truth[nSuppSize] = nFans[0] + i;
pPermLits[i] = Abc_Var2Lit( nSuppSize++, 0 );
}
pTruthOne = Dss_ManComputeTruth( p, pEnt->iDsd1, p->nVars, pPermLits );
//Kit_DsdPrintFromTruth( pTruthOne, p->nVars ); printf( "\n" );
Abc_TtAnd( pTruth, pTruth, pTruthOne, Abc_TtWordNum(p->nVars), 0 );
// perform decomposition
nNonDec = Dau_DsdDecompose( pTruth, nSuppSize, 0, pDsd );
// derive network and convert it into the manager
pNtk = Dss_NtkCreate( pDsd, p->nVars );
Dss_NtkPrint( pNtk );
Dss_NtkCheck( pNtk );
Dss_NtkTransform( pNtk, pPermDsd );
Dss_NtkPrint( pNtk );
pFun->iDsd = Dss_NtkRebuild( p, pNtk );
Dss_NtkFree( pNtk );
// pPermDsd maps vars of iDsdRes into literals of pTruth
// translate this map into the one that maps vars of iDsdRes into literals of cut
pFun->nFans = Dss_ManLitSuppSize( p, pFun->iDsd );
for ( i = 0; i < (int)pFun->nFans; i++ )
pFun->pFans[i] = (unsigned char)Abc_Lit2Lit( pMapDsd2Truth, pPermDsd[i] );
return pFun;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
// returns mapping of variables of dsd1 into literals of dsd0
Dss_Ent_t * Dss_ManSharedMap( Dss_Man_t * p, int * iDsd, int * nFans, int ** pFans, unsigned uSharedMask )
{
static char Buffer[100];
Dss_Ent_t * pEnt = (Dss_Ent_t *)Buffer;
pEnt->iDsd0 = iDsd[0];
pEnt->iDsd1 = iDsd[1];
pEnt->nShared = 0;
if ( uSharedMask )
{
int i, g, pMapGtoL[DAU_MAX_VAR] = {-1};
for ( i = 0; i < nFans[0]; i++ )
pMapGtoL[ Abc_Lit2Var(pFans[0][i]) ] = Abc_Var2Lit( i, Abc_LitIsCompl(pFans[0][i]) );
for ( i = 0; i < nFans[1]; i++ )
{
g = Abc_Lit2Var( pFans[1][i] );
if ( (uSharedMask >> g) & 1 )
{
assert( pMapGtoL[g] >= 0 );
pEnt->pShared[2*pEnt->nShared+0] = (unsigned char)i;
pEnt->pShared[2*pEnt->nShared+1] = (unsigned char)Abc_LitNotCond( pMapGtoL[g], Abc_LitIsCompl(pFans[1][i]) );
pEnt->nShared++;
}
}
}
pEnt->nWords = Dss_EntWordNum( pEnt );
return pEnt;
}
// merge two DSD functions
int Dss_ManMerge( Dss_Man_t * p, int * iDsd, int * nFans, int ** pFans, unsigned uSharedMask, int nKLutSize, unsigned char * pPermRes )
{
Dss_Ent_t * pEnt;
Dss_Fun_t * pFun;
int i;
assert( iDsd[0] <= iDsd[1] );
// constant argument
if ( iDsd[0] == 0 ) return 0;
if ( iDsd[0] == 1 ) return iDsd[1];
if ( iDsd[1] == 0 ) return 0;
if ( iDsd[1] == 1 ) return iDsd[0];
// no overlap
assert( nFans[0] == Dss_ManLitSuppSize(p, iDsd[0]) );
assert( nFans[1] == Dss_ManLitSuppSize(p, iDsd[1]) );
assert( nFans[0] + nFans[1] <= nKLutSize + Dss_WordCountOnes(uSharedMask) );
// create map of shared variables
pEnt = Dss_ManSharedMap( p, iDsd, nFans, pFans, uSharedMask );
// check cache
if ( uSharedMask == 0 )
pFun = Dss_ManOperationFun( p, iDsd, nFans );
else
pFun = Dss_ManBooleanAnd( p, pEnt, nFans );
assert( (int)pFun->nFans == Dss_ManLitSuppSize(p, pFun->iDsd) );
assert( (int)pFun->nFans <= nKLutSize );
// create permutation
for ( i = 0; i < (int)pFun->nFans; i++ )
printf( "%d ", pFun->pFans[i] );
printf( "\n" );
for ( i = 0; i < (int)pFun->nFans; i++ )
if ( pFun->pFans[i] < 2 * nFans[0] ) // first dec
pPermRes[i] = (unsigned char)Dss_Lit2Lit( pFans[0], pFun->pFans[i] );
else
pPermRes[i] = (unsigned char)Dss_Lit2Lit( pFans[1], pFun->pFans[i] - 2 * nFans[0] );
// create permutation
for ( i = 0; i < (int)pFun->nFans; i++ )
printf( "%d ", pPermRes[i] );
printf( "\n" );
return pFun->iDsd;
}
/**Function*************************************************************
@ -976,6 +1374,55 @@ void Dau_DsdTest_()
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Dau_DsdTest444()
{
Dss_Man_t * p = Dss_ManAlloc( 6 );
int iLit1[3] = { 2, 4 };
int iLit2[3] = { 2, 4, 6 };
int iRes[5];
int nFans[2] = { 4, 3 };
int pPermLits1[4] = { 0, 2, 5, 6 };
int pPermLits2[5] = { 2, 9, 10 };
int * pPermLits[2] = { pPermLits1, pPermLits2 };
unsigned char pPermRes[6];
int pPermResInt[6];
unsigned uMaskShared = 2;
int i;
iRes[0] = 1 ^ Dss_ManOperation( p, DAU_DSD_AND, iLit1, 2, NULL );
iRes[1] = iRes[0];
iRes[2] = 1 ^ Dss_ManOperation( p, DAU_DSD_AND, iRes, 2, NULL );
iRes[3] = Dss_ManOperation( p, DAU_DSD_AND, iLit2, 3, NULL );
Dss_ManPrintOne( p, iRes[0], NULL );
Dss_ManPrintOne( p, iRes[2], NULL );
Dss_ManPrintOne( p, iRes[3], NULL );
Dss_ManPrintOne( p, iRes[2], pPermLits1 );
Dss_ManPrintOne( p, iRes[3], pPermLits2 );
iRes[4] = Dss_ManMerge( p, iRes+2, nFans, pPermLits, uMaskShared, 6, pPermRes );
for ( i = 0; i < 6; i++ )
pPermResInt[i] = pPermRes[i];
Dss_ManPrintOne( p, iRes[4], NULL );
Dss_ManPrintOne( p, iRes[4], pPermResInt );
Dss_ManFree( p );
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////