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abc
Commit 6c2ac766 by Alan Mishchenko
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Added another specialized check to the mapper.

parent 86ba294d
Showing with 542 additions and 21 deletions
abc.rc
......@@ -21,7 +21,7 @@ set gnuplotwin wgnuplot.exe
set gnuplotunix gnuplot
# Niklas Een's commands
load_plugin C:\_projects\abc\_TEST\bip\bip_2011-04-26.exe "BIP"
load_plugin C:\_projects\abc\_TEST\bip\bip_2011-06-27.exe "BIP"
# standard aliases
alias b balance
......
src/base/abci/abc.c
......@@ -12884,7 +12884,7 @@ int Abc_CommandIf( Abc_Frame_t * pAbc, int argc, char ** argv )
fLutMux = 0;
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "KCFADEqaflepmrsdbugojkvh" ) ) != EOF )
while ( ( c = Extra_UtilGetopt( argc, argv, "KCFADEqaflepmrsdbugojikvh" ) ) != EOF )
{
switch ( c )
{
......@@ -12999,10 +12999,13 @@ int Abc_CommandIf( Abc_Frame_t * pAbc, int argc, char ** argv )
pPars->fUseBuffs ^= 1;
break;
case 'j':
pPars->fEnableCheck ^= 1;
pPars->fEnableCheck07 ^= 1;
break;
case 'i':
pPars->fEnableCheck08 ^= 1;
break;
case 'k':
pPars->fEnableCheck2 ^= 1;
pPars->fEnableCheck10 ^= 1;
break;
case 'v':
pPars->fVerbose ^= 1;
......@@ -13083,23 +13086,32 @@ int Abc_CommandIf( Abc_Frame_t * pAbc, int argc, char ** argv )
pPars->fCutMin = 1;
}
if ( pPars->fEnableCheck && pPars->fEnableCheck2 )
if ( pPars->fEnableCheck07 + pPars->fEnableCheck08 + pPars->fEnableCheck10 > 1 )
{
Abc_Print( -1, "These two checks cannot be enabled at the same time.\n" );
Abc_Print( -1, "Only one additional check can be performed at the same time.\n" );
return 1;
}
if ( pPars->fEnableCheck )
if ( pPars->fEnableCheck07 )
{
if ( pPars->nLutSize < 6 || pPars->nLutSize > 7 )
{
Abc_Print( -1, "This feature only works for {6,7}-LUTs.\n" );
return 1;
}
pPars->pFuncCell = If_CutPerformCheck;
pPars->pFuncCell = If_CutPerformCheck07;
pPars->fCutMin = 1;
}
if ( pPars->fEnableCheck2 )
if ( pPars->fEnableCheck08 )
{
if ( pPars->nLutSize < 6 || pPars->nLutSize > 8 )
{
Abc_Print( -1, "This feature only works for {6,7,8}-LUTs.\n" );
return 1;
}
pPars->pFuncCell = If_CutPerformCheck08;
pPars->fCutMin = 1;
}
if ( pPars->fEnableCheck10 )
{
if ( pPars->nLutSize < 6 || pPars->nLutSize > 10 )
{
......@@ -13187,7 +13199,7 @@ usage:
sprintf( LutSize, "library" );
else
sprintf( LutSize, "%d", pPars->nLutSize );
Abc_Print( -2, "usage: if [-KCFA num] [-DE float] [-qarlepmsdbugojkvh]\n" );
Abc_Print( -2, "usage: if [-KCFA num] [-DE float] [-qarlepmsdbugojikvh]\n" );
Abc_Print( -2, "\t performs FPGA technology mapping of the network\n" );
Abc_Print( -2, "\t-K num : the number of LUT inputs (2 < num < %d) [default = %s]\n", IF_MAX_LUTSIZE+1, LutSize );
Abc_Print( -2, "\t-C num : the max number of priority cuts (0 < num < 2^12) [default = %d]\n", pPars->nCutsMax );
......@@ -13209,8 +13221,9 @@ usage:
Abc_Print( -2, "\t-u : toggles the use of MUXes along with LUTs [default = %s]\n", fLutMux? "yes": "no" );
Abc_Print( -2, "\t-g : toggles global delay optimization [default = %s]\n", pPars->fDelayOpt? "yes": "no" );
Abc_Print( -2, "\t-o : toggles using buffers to decouple combinational outputs [default = %s]\n", pPars->fUseBuffs? "yes": "no" );
Abc_Print( -2, "\t-j : toggles enabling additional check [default = %s]\n", pPars->fEnableCheck? "yes": "no" );
Abc_Print( -2, "\t-k : toggles enabling additional check [default = %s]\n", pPars->fEnableCheck2? "yes": "no" );
Abc_Print( -2, "\t-j : toggles enabling additional check [default = %s]\n", pPars->fEnableCheck07? "yes": "no" );
Abc_Print( -2, "\t-i : toggles enabling additional check [default = %s]\n", pPars->fEnableCheck08? "yes": "no" );
Abc_Print( -2, "\t-k : toggles enabling additional check [default = %s]\n", pPars->fEnableCheck10? "yes": "no" );
Abc_Print( -2, "\t-v : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
Abc_Print( -2, "\t-h : prints the command usage\n");
return 1;
......
src/map/if/if.h
......@@ -96,8 +96,9 @@ struct If_Par_t_
int fBidec; // use bi-decomposition
int fUseBat; // use one specialized feature
int fUseBuffs; // use buffers to decouple outputs
int fEnableCheck; // enable additional checking
int fEnableCheck2; // enable additional checking
int fEnableCheck07;// enable additional checking
int fEnableCheck08;// enable additional checking
int fEnableCheck10;// enable additional checking
int fVerbose; // the verbosity flag
// internal parameters
int fDelayOpt; // special delay optimization
......@@ -406,7 +407,8 @@ extern float If_CutPowerRef( If_Man_t * p, If_Cut_t * pCut, If_Obj_t *
extern float If_CutPowerDerefed( If_Man_t * p, If_Cut_t * pCut, If_Obj_t * pRoot );
extern float If_CutPowerRefed( If_Man_t * p, If_Cut_t * pCut, If_Obj_t * pRoot );
/*=== ifDec.c =============================================================*/
extern int If_CutPerformCheck( unsigned * pTruth, int nVars, int nLeaves );
extern int If_CutPerformCheck07( unsigned * pTruth, int nVars, int nLeaves );
extern int If_CutPerformCheck08( unsigned * pTruth, int nVars, int nLeaves );
extern int If_CutPerformCheck10( unsigned * pTruth, int nVars, int nLeaves );
/*=== ifLib.c =============================================================*/
extern If_Lib_t * If_LutLibRead( char * FileName );
......
src/map/if/ifCut.c
......@@ -685,7 +685,7 @@ void If_CutSort( If_Man_t * p, If_Set_t * pCutSet, If_Cut_t * pCut )
return;
}
if ( (p->pPars->fUseBat || p->pPars->fEnableCheck || p->pPars->fEnableCheck2) && !pCut->fUseless )
if ( (p->pPars->fUseBat || p->pPars->fEnableCheck07 || p->pPars->fEnableCheck08 || p->pPars->fEnableCheck10) && !pCut->fUseless )
{
If_Cut_t * pFirst = pCutSet->ppCuts[0];
if ( pFirst->fUseless || If_ManSortCompare(p, pFirst, pCut) == 1 )
......
src/map/if/ifDec.c → src/map/if/ifDec07.c
/**CFile****************************************************************
FileName [ifDec.c]
FileName [ifDec07.c]
SystemName [ABC: Logic synthesis and verification system.]
......@@ -14,7 +14,7 @@
Date [Ver. 1.0. Started - November 21, 2006.]
Revision [$Id: ifDec.c,v 1.00 2006/11/21 00:00:00 alanmi Exp $]
Revision [$Id: ifDec07.c,v 1.00 2006/11/21 00:00:00 alanmi Exp $]
***********************************************************************/
......@@ -671,7 +671,7 @@ int If_Dec7PickBestMux( word t[2], word c0r[2], word c1r[2] )
SeeAlso []
***********************************************************************/
int If_CutPerformCheck( unsigned * pTruth, int nVars, int nLeaves )
int If_CutPerformCheck07( unsigned * pTruth, int nVars, int nLeaves )
{
int fDerive = 1;
if ( nLeaves < 6 )
......
src/map/if/ifDec08.c 0 → 100644
/**CFile****************************************************************
FileName [ifDec08.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [FPGA mapping based on priority cuts.]
Synopsis [Performs additional check.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - November 21, 2006.]
Revision [$Id: ifDec08.c,v 1.00 2006/11/21 00:00:00 alanmi Exp $]
***********************************************************************/
#include "if.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
// the bit count for the first 256 integer numbers
static int BitCount8[256] = {
0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4,1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,
1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,4,5,5,6,5,6,6,7,5,6,6,7,6,7,7,8
};
// variable swapping code
static word PMasks[5][3] = {
{ 0x9999999999999999, 0x2222222222222222, 0x4444444444444444 },
{ 0xC3C3C3C3C3C3C3C3, 0x0C0C0C0C0C0C0C0C, 0x3030303030303030 },
{ 0xF00FF00FF00FF00F, 0x00F000F000F000F0, 0x0F000F000F000F00 },
{ 0xFF0000FFFF0000FF, 0x0000FF000000FF00, 0x00FF000000FF0000 },
{ 0xFFFF00000000FFFF, 0x00000000FFFF0000, 0x0000FFFF00000000 }
};
// elementary truth tables
static word Truth6[6] = {
0xAAAAAAAAAAAAAAAA,
0xCCCCCCCCCCCCCCCC,
0xF0F0F0F0F0F0F0F0,
0xFF00FF00FF00FF00,
0xFFFF0000FFFF0000,
0xFFFFFFFF00000000
};
static word Truth10[10][16] = {
0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,0xAAAAAAAAAAAAAAAA,
0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,0xCCCCCCCCCCCCCCCC,
0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,0xF0F0F0F0F0F0F0F0,
0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,0xFF00FF00FF00FF00,
0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,0xFFFF0000FFFF0000,
0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,0xFFFFFFFF00000000,
0x0000000000000000,0xFFFFFFFFFFFFFFFF,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0x0000000000000000,0xFFFFFFFFFFFFFFFF,
0x0000000000000000,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0x0000000000000000,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0x0000000000000000,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0x0000000000000000,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,
0x0000000000000000,0x0000000000000000,0x0000000000000000,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0x0000000000000000,0x0000000000000000,0x0000000000000000,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,
0x0000000000000000,0x0000000000000000,0x0000000000000000,0x0000000000000000,0x0000000000000000,0x0000000000000000,0x0000000000000000,0x0000000000000000,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF
};
extern void Kit_DsdPrintFromTruth( unsigned * pTruth, int nVars );
extern void Extra_PrintBinary( FILE * pFile, unsigned Sign[], int nBits );
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
static inline int If_Dec08WordNum( int nVars )
{
return nVars <= 6 ? 1 : 1 << (nVars-6);
}
static void If_Dec08PrintConfigOne( unsigned z )
{
unsigned t;
t = (z & 0xffff) | ((z & 0xffff) << 16);
Extra_PrintBinary( stdout, &t, 16 );
printf( " " );
Kit_DsdPrintFromTruth( &t, 4 );
printf( " " );
printf( " %d", (z >> 16) & 7 );
printf( " %d", (z >> 20) & 7 );
printf( " %d", (z >> 24) & 7 );
printf( " %d", (z >> 28) & 7 );
printf( "\n" );
}
void If_Dec08PrintConfig( unsigned * pZ )
{
while ( *pZ )
If_Dec08PrintConfigOne( *pZ++ );
}
static inline void If_Dec08ComposeLut4( int t, word ** pF, word * pR, int nVars )
{
word pC[16];
int m, w, v, nWords;
assert( nVars <= 10 );
nWords = If_Dec08WordNum( nVars );
for ( w = 0; w < nWords; w++ )
pR[w] = 0;
for ( m = 0; m < 16; m++ )
{
if ( !((t >> m) & 1) )
continue;
for ( w = 0; w < nWords; w++ )
pC[w] = ~0;
for ( v = 0; v < 4; v++ )
for ( w = 0; w < nWords; w++ )
pC[w] &= ((m >> v) & 1) ? pF[v][w] : ~pF[v][w];
for ( w = 0; w < nWords; w++ )
pR[w] |= pC[w];
}
}
void If_Dec08Verify( word * pF, int nVars, unsigned * pZ )
{
word pN[16][16], * pG[4];
int i, w, v, k, nWords;
unsigned z;
nWords = If_Dec08WordNum( nVars );
for ( k = 0; k < nVars; k++ )
for ( w = 0; w < nWords; w++ )
pN[k][w] = Truth10[k][w];
for ( i = 0; (z = pZ[i]); i++, k++ )
{
for ( v = 0; v < 4; v++ )
pG[v] = pN[ (z >> (16+(v<<2))) & 7 ];
If_Dec08ComposeLut4( (int)(z & 0xffff), pG, pN[k], nVars );
}
k--;
for ( w = 0; w < nWords; w++ )
if ( pN[k][w] != pF[w] )
{
If_Dec08PrintConfig( pZ );
Kit_DsdPrintFromTruth( (unsigned*)pF, nVars ); printf( "\n" );
Kit_DsdPrintFromTruth( (unsigned*)pN[k], nVars ); printf( "\n" );
printf( "Verification failed!\n" );
break;
}
}
// count the number of unique cofactors
static inline int If_Dec08CofCount2( word * pF, int nVars )
{
int nShift = (1 << (nVars - 3));
word Mask = (((word)1) << nShift) - 1;
word iCof0 = pF[0] & Mask;
word iCof1 = iCof0, iCof;
int i;
assert( nVars >= 6 && nVars <= 8 );
// if ( nVars == 10 )
// Mask = ~0;
for ( i = 1; i < 8; i++ )
{
iCof = (pF[(i * nShift) / 64] >> ((i * nShift) & 63)) & Mask;
if ( iCof == iCof0 )
continue;
if ( iCof1 == iCof0 )
iCof1 = iCof;
else if ( iCof != iCof1 )
return 3;
}
return 2;
}
static inline int If_Dec08CofCount( word * pF, int nVars )
{
int nShift = (1 << (nVars - 3));
word Mask = (((word)1) << nShift) - 1;
word iCofs[16], iCof;
int i, c, nCofs = 1;
// if ( nVars == 10 )
// Mask = ~0;
iCofs[0] = pF[0] & Mask;
for ( i = 1; i < 8; i++ )
{
iCof = (pF[(i * nShift) / 64] >> ((i * nShift) & 63)) & Mask;
for ( c = 0; c < nCofs; c++ )
if ( iCof == iCofs[c] )
break;
if ( c == nCofs )
iCofs[nCofs++] = iCof;
}
return nCofs;
}
// variable permutation for large functions
static inline void If_Dec08Copy( word * pOut, word * pIn, int nVars )
{
int w, nWords = If_Dec08WordNum( nVars );
for ( w = 0; w < nWords; w++ )
pOut[w] = pIn[w];
}
static inline void If_Dec08SwapAdjacent( word * pOut, word * pIn, int iVar, int nVars )
{
int i, k, nWords = If_Dec08WordNum( nVars );
assert( iVar < nVars - 1 );
if ( iVar < 5 )
{
int Shift = (1 << iVar);
for ( i = 0; i < nWords; i++ )
pOut[i] = (pIn[i] & PMasks[iVar][0]) | ((pIn[i] & PMasks[iVar][1]) << Shift) | ((pIn[i] & PMasks[iVar][2]) >> Shift);
}
else if ( iVar > 5 )
{
int Step = (1 << (iVar - 6));
for ( k = 0; k < nWords; k += 4*Step )
{
for ( i = 0; i < Step; i++ )
pOut[i] = pIn[i];
for ( i = 0; i < Step; i++ )
pOut[Step+i] = pIn[2*Step+i];
for ( i = 0; i < Step; i++ )
pOut[2*Step+i] = pIn[Step+i];
for ( i = 0; i < Step; i++ )
pOut[3*Step+i] = pIn[3*Step+i];
pIn += 4*Step;
pOut += 4*Step;
}
}
else // if ( iVar == 5 )
{
for ( i = 0; i < nWords; i += 2 )
{
pOut[i] = (pIn[i] & 0x00000000FFFFFFFF) | ((pIn[i+1] & 0x00000000FFFFFFFF) << 32);
pOut[i+1] = (pIn[i+1] & 0xFFFFFFFF00000000) | ((pIn[i] & 0xFFFFFFFF00000000) >> 32);
}
}
}
static inline void If_Dec08MoveTo( word * pF, int nVars, int v, int p, int Pla2Var[], int Var2Pla[] )
{
word pG[16], * pIn = pF, * pOut = pG, * pTemp;
int iPlace0, iPlace1, Count = 0;
assert( Var2Pla[v] <= p );
while ( Var2Pla[v] != p )
{
iPlace0 = Var2Pla[v];
iPlace1 = Var2Pla[v]+1;
If_Dec08SwapAdjacent( pOut, pIn, iPlace0, nVars );
pTemp = pIn; pIn = pOut, pOut = pTemp;
Var2Pla[Pla2Var[iPlace0]]++;
Var2Pla[Pla2Var[iPlace1]]--;
Pla2Var[iPlace0] ^= Pla2Var[iPlace1];
Pla2Var[iPlace1] ^= Pla2Var[iPlace0];
Pla2Var[iPlace0] ^= Pla2Var[iPlace1];
Count++;
}
if ( Count & 1 )
If_Dec08Copy( pF, pIn, nVars );
assert( Pla2Var[p] == v );
}
// derive binary function
static inline int If_Dec08DeriveCount2( word * pF, word * pRes, int nVars )
{
int nShift = (1 << (nVars - 4));
word Mask = (((word)1) << nShift) - 1;
int i, MaskDec = 0;
word iCof0 = pF[0] & Mask;
word iCof1 = pF[0] & Mask;
word iCof, * pCof0, * pCof1;
if ( nVars == 10 )
Mask = ~0;
for ( i = 1; i < 16; i++ )
{
iCof = (pF[(i * nShift) / 64] >> ((i * nShift) & 63)) & Mask;
if ( *pCof0 != iCof )
{
*pCof1 = iCof;
MaskDec |= (1 << i);
}
}
*pRes = ((iCof1 << nShift) | iCof0);
return MaskDec;
}
static inline word If_DecTruthStretch( word t, int nVars )
{
assert( nVars > 1 );
if ( nVars == 1 )
nVars++, t = (t & 0x3) | ((t & 0x3) << 2);
if ( nVars == 2 )
nVars++, t = (t & 0xF) | ((t & 0xF) << 4);
if ( nVars == 3 )
nVars++, t = (t & 0xFF) | ((t & 0xFF) << 8);
if ( nVars == 4 )
nVars++, t = (t & 0xFFFF) | ((t & 0xFFFF) << 16);
if ( nVars == 5 )
nVars++, t = (t & 0xFFFFFFFF) | ((t & 0xFFFFFFFF) << 32);
assert( nVars >= 6 );
}
// support minimization
static inline int If_DecSuppIsMinBase( int Supp )
{
return (Supp & (Supp+1)) == 0;
}
static inline int If_Dec08HasVar( word * t, int nVars, int iVar )
{
int nWords = If_Dec08WordNum( nVars );
assert( iVar < nVars );
if ( iVar < 6 )
{
int i, Shift = (1 << iVar);
for ( i = 0; i < nWords; i++ )
if ( (t[i] & ~Truth6[iVar]) != ((t[i] & Truth6[iVar]) >> Shift) )
return 1;
return 0;
}
else
{
int i, k, Step = (1 << (iVar - 6));
for ( k = 0; k < nWords; k += 2*Step )
{
for ( i = 0; i < Step; i++ )
if ( t[i] != t[Step+i] )
return 1;
t += 2*Step;
}
return 0;
}
}
static inline int If_Dec08Support( word * t, int nVars )
{
int v, Supp = 0;
for ( v = 0; v < nVars; v++ )
if ( If_Dec08HasVar( t, nVars, v ) )
Supp |= (1 << v);
return Supp;
}
// checks
void If_Dec08Cofactors( word * pF, int nVars, int iVar, word * pCof0, word * pCof1 )
{
int nWords = If_Dec08WordNum( nVars );
assert( iVar < nVars );
if ( iVar < 6 )
{
int i, Shift = (1 << iVar);
for ( i = 0; i < nWords; i++ )
{
pCof0[i] = (pF[i] & ~Truth6[iVar]) | ((pF[i] & ~Truth6[iVar]) << Shift);
pCof1[i] = (pF[i] & Truth6[iVar]) | ((pF[i] & Truth6[iVar]) >> Shift);
}
return;
}
else
{
int i, k, Step = (1 << (iVar - 6));
for ( k = 0; k < nWords; k += 2*Step )
{
for ( i = 0; i < Step; i++ )
{
pCof0[i] = pCof0[Step+i] = pF[i];
pCof1[i] = pCof1[Step+i] = pF[Step+i];
}
pF += 2*Step;
pCof0 += 2*Step;
pCof1 += 2*Step;
}
return;
}
}
static inline int If_Dec08Count16( int Num16 )
{
assert( Num16 < (1<<16)-1 );
return BitCount8[Num16 & 255] + BitCount8[(Num16 >> 8) & 255];
}
static inline void If_DecVerifyPerm( int Pla2Var[10], int Var2Pla[10], int nVars )
{
int i;
for ( i = 0; i < nVars; i++ )
assert( Pla2Var[Var2Pla[i]] == i );
}
int If_Dec08Perform( word * pF, int nVars, int fDerive )
{
// static int Cnt = 0;
word pCof0[16], pCof1[16];
int Pla2Var[10], Var2Pla[10], Count[210], Masks[210];
int i, i0,i1,i2, v, x;
assert( nVars >= 6 && nVars <= 8 );
// start arrays
for ( i = 0; i < nVars; i++ )
{
assert( If_Dec08HasVar( pF, nVars, i ) );
Pla2Var[i] = Var2Pla[i] = i;
}
/*
Cnt++;
//if ( Cnt == 108 )
{
printf( "%d\n", Cnt );
//Extra_PrintHex( stdout, (unsigned *)pF, nVars );
//printf( "\n" );
Kit_DsdPrintFromTruth( (unsigned *)pF, nVars );
printf( "\n" );
printf( "\n" );
}
*/
// generate permutations
v = 0;
for ( i0 = 0; i0 < nVars; i0++ )
for ( i1 = i0+1; i1 < nVars; i1++ )
for ( i2 = i1+1; i2 < nVars; i2++, v++ )
{
If_Dec08MoveTo( pF, nVars, i0, nVars-1, Pla2Var, Var2Pla );
If_Dec08MoveTo( pF, nVars, i1, nVars-2, Pla2Var, Var2Pla );
If_Dec08MoveTo( pF, nVars, i2, nVars-3, Pla2Var, Var2Pla );
If_DecVerifyPerm( Pla2Var, Var2Pla, nVars );
Count[v] = If_Dec08CofCount( pF, nVars );
Masks[v] = (1 << i0) | (1 << i1) | (1 << i2);
assert( Count[v] > 1 );
//printf( "%d ", Count[v] );
if ( Count[v] == 2 || Count[v] > 5 )
continue;
for ( x = 0; x < 4; x++ )
{
If_Dec08Cofactors( pF, nVars, nVars-1-x, pCof0, pCof1 );
if ( If_Dec08CofCount2(pCof0, nVars) <= 2 && If_Dec08CofCount2(pCof1, nVars) <= 2 )
{
Count[v] = -Count[v];
break;
}
}
}
//printf( "\n" );
assert( v <= 210 );
// check if there are compatible bound sets
for ( i0 = 0; i0 < v; i0++ )
for ( i1 = i0+1; i1 < v; i1++ )
{
if ( If_Dec08Count16(Masks[i0] & Masks[i1]) > 8 - nVars )
continue;
if ( nVars == 8 )
{
if ( Count[i0] == 2 && Count[i1] == 2 )
return 1;
}
else if ( nVars == 7 )
{
if ( (Count[i0] == 2 && Count[i1] == 2) ||
(Count[i0] == 2 && Count[i1] < 0) ||
(Count[i0] < 0 && Count[i1] == 2) )
return 1;
}
else
{
if ( (Count[i0] == 2 && Count[i1] == 2) ||
(Count[i0] == 2 && Count[i1] < 0) ||
(Count[i0] < 0 && Count[i1] == 2) ||
(Count[i0] < 0 && Count[i1] < 0) )
return 1;
}
}
// printf( "not found\n" );
return 0;
}
/**Function*************************************************************
Synopsis [Performs additional check.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int If_CutPerformCheck08( unsigned * pTruth, int nVars, int nLeaves )
{
int nSupp, fDerive = 0;
word z[2] = {0}, pF[16];
if ( nLeaves <= 5 )
return 1;
If_Dec08Copy( pF, (word *)pTruth, nVars );
nSupp = If_Dec08Support( pF, nLeaves );
if ( !nSupp || !If_DecSuppIsMinBase(nSupp) )
return 0;
if ( If_Dec08Perform( pF, nLeaves, fDerive ) )
{
// printf( "1" );
return 1;
// If_Dec08Verify( t, nLeaves, NULL );
}
// printf( "0" );
return 0;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
src/map/if/module.make
SRC += src/map/if/ifCore.c \
src/map/if/ifCut.c \
src/map/if/ifDec.c \
src/map/if/ifDec07.c \
src/map/if/ifDec08.c \
src/map/if/ifDec10.c \
src/map/if/ifLib.c \
src/map/if/ifMan.c \
......
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