abc/src/proof/acec/acecTree.c

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/**CFile****************************************************************
FileName [acecTree.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [CEC for arithmetic circuits.]
Synopsis [Adder tree construction.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: acecTree.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "acecInt.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
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/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Acec_BoxFree( Acec_Box_t * pBox )
{
Vec_WecFreeP( &pBox->vAdds );
Vec_WecFreeP( &pBox->vLeafs );
Vec_WecFreeP( &pBox->vRoots );
Vec_WecFreeP( &pBox->vLeafLits );
Vec_WecFreeP( &pBox->vRootLits );
Vec_WecFreeP( &pBox->vUnique );
Vec_WecFreeP( &pBox->vShared );
Vec_BitFreeP( &pBox->vInvHadds );
ABC_FREE( pBox );
}
void Acec_BoxFreeP( Acec_Box_t ** ppBox )
{
if ( *ppBox )
Acec_BoxFree( *ppBox );
*ppBox = NULL;
}
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/**Function*************************************************************
Synopsis [Find internal cut points with exactly one adder fanin/fanout.]
Description [Returns a map of point into its input/output adder.]
SideEffects []
SeeAlso []
***********************************************************************/
void Acec_TreeAddInOutPoint( Vec_Int_t * vMap, int iObj, int iAdd, int fOut )
{
int * pPlace = Vec_IntEntryP( vMap, Abc_Var2Lit(iObj, fOut) );
if ( *pPlace == -1 )
*pPlace = iAdd;
else if ( *pPlace >= 0 )
*pPlace = -2;
}
Vec_Int_t * Acec_TreeFindPoints( Gia_Man_t * p, Vec_Int_t * vAdds )
{
Vec_Int_t * vMap = Vec_IntStartFull( 2*Gia_ManObjNum(p) );
int i;
for ( i = 0; 6*i < Vec_IntSize(vAdds); i++ )
{
Acec_TreeAddInOutPoint( vMap, Vec_IntEntry(vAdds, 6*i+0), i, 0 );
Acec_TreeAddInOutPoint( vMap, Vec_IntEntry(vAdds, 6*i+1), i, 0 );
Acec_TreeAddInOutPoint( vMap, Vec_IntEntry(vAdds, 6*i+2), i, 0 );
Acec_TreeAddInOutPoint( vMap, Vec_IntEntry(vAdds, 6*i+3), i, 1 );
Acec_TreeAddInOutPoint( vMap, Vec_IntEntry(vAdds, 6*i+4), i, 1 );
}
return vMap;
}
/**Function*************************************************************
Synopsis [Find adder trees as groups of adders connected vis cut-points.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Acec_TreeWhichPoint( Vec_Int_t * vAdds, int iAdd, int iObj )
{
int k;
for ( k = 0; k < 5; k++ )
if ( Vec_IntEntry(vAdds, 6*iAdd+k) == iObj )
return k;
assert( 0 );
return -1;
}
void Acec_TreeFindTrees2_rec( Vec_Int_t * vAdds, Vec_Int_t * vMap, int iAdd, int Rank, Vec_Int_t * vTree, Vec_Bit_t * vFound )
{
extern void Acec_TreeFindTrees_rec( Vec_Int_t * vAdds, Vec_Int_t * vMap, int iObj, int Rank, Vec_Int_t * vTree, Vec_Bit_t * vFound );
int k;
if ( Vec_BitEntry(vFound, iAdd) )
return;
Vec_BitWriteEntry( vFound, iAdd, 1 );
Vec_IntPush( vTree, iAdd );
Vec_IntPush( vTree, Rank );
//printf( "Assigning rank %d to (%d:%d).\n", Rank, Vec_IntEntry(vAdds, 6*iAdd+3), Vec_IntEntry(vAdds, 6*iAdd+4) );
for ( k = 0; k < 5; k++ )
Acec_TreeFindTrees_rec( vAdds, vMap, Vec_IntEntry(vAdds, 6*iAdd+k), k == 4 ? Rank + 1 : Rank, vTree, vFound );
}
void Acec_TreeFindTrees_rec( Vec_Int_t * vAdds, Vec_Int_t * vMap, int iObj, int Rank, Vec_Int_t * vTree, Vec_Bit_t * vFound )
{
int In = Vec_IntEntry( vMap, Abc_Var2Lit(iObj, 1) );
int Out = Vec_IntEntry( vMap, Abc_Var2Lit(iObj, 0) );
if ( In < 0 || Out < 0 )
return;
Acec_TreeFindTrees2_rec( vAdds, vMap, In, Acec_TreeWhichPoint(vAdds, In, iObj) == 4 ? Rank-1 : Rank, vTree, vFound );
Acec_TreeFindTrees2_rec( vAdds, vMap, Out, Rank, vTree, vFound );
}
Vec_Wec_t * Acec_TreeFindTrees( Gia_Man_t * p, Vec_Int_t * vAdds )
{
Vec_Wec_t * vTrees = Vec_WecAlloc( 10 );
Vec_Int_t * vMap = Acec_TreeFindPoints( p, vAdds );
Vec_Bit_t * vFound = Vec_BitStart( Vec_IntSize(vAdds)/6 );
Vec_Int_t * vTree;
int i, k, In, Out, Box, Rank, MinRank;
// go through the cut-points
Vec_IntForEachEntryDouble( vMap, In, Out, i )
{
if ( In < 0 || Out < 0 )
continue;
assert( Vec_BitEntry(vFound, In) == Vec_BitEntry(vFound, Out) );
if ( Vec_BitEntry(vFound, In) )
continue;
vTree = Vec_WecPushLevel( vTrees );
Acec_TreeFindTrees_rec( vAdds, vMap, i/2, 0, vTree, vFound );
// normalize rank
MinRank = ABC_INFINITY;
Vec_IntForEachEntryDouble( vTree, Box, Rank, k )
MinRank = Abc_MinInt( MinRank, Rank );
Vec_IntForEachEntryDouble( vTree, Box, Rank, k )
Vec_IntWriteEntry( vTree, k+1, Rank - MinRank );
}
Vec_BitFree( vFound );
Vec_IntFree( vMap );
// sort by size
Vec_WecSort( vTrees, 1 );
return vTrees;
}
void Acec_TreeFindTreesTest( Gia_Man_t * p )
{
Vec_Wec_t * vTrees;
abctime clk = Abc_Clock();
Vec_Int_t * vAdds = Ree_ManComputeCuts( p, NULL, 1 );
int nFadds = Ree_ManCountFadds( vAdds );
printf( "Detected %d adders (%d FAs and %d HAs). ", Vec_IntSize(vAdds)/6, nFadds, Vec_IntSize(vAdds)/6-nFadds );
Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
clk = Abc_Clock();
vTrees = Acec_TreeFindTrees( p, vAdds );
printf( "Collected %d trees with %d adders in them. ", Vec_WecSize(vTrees), Vec_WecSizeSize(vTrees)/2 );
Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
Vec_WecPrint( vTrees, 0 );
Vec_WecFree( vTrees );
Vec_IntFree( vAdds );
}
/**Function*************************************************************
Synopsis [Creates leaves and roots.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Acec_CreateBoxMaxRank( Vec_Int_t * vTree )
{
int k, Box, Rank, MaxRank = 0;
Vec_IntForEachEntryDouble( vTree, Box, Rank, k )
MaxRank = Abc_MaxInt( MaxRank, Rank );
return MaxRank;
}
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void Acec_TreeInsOuts( Gia_Man_t * p, Vec_Int_t * vAdds, Vec_Int_t * vTree, Vec_Wec_t * vBoxes, Vec_Wec_t * vLeaves, Vec_Wec_t * vRoots )
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{
Vec_Bit_t * vIsLeaf = Vec_BitStart( Gia_ManObjNum(p) );
Vec_Bit_t * vIsRoot = Vec_BitStart( Gia_ManObjNum(p) );
Vec_Int_t * vLevel;
int i, k, Box, Rank;
Vec_BitWriteEntry( vIsLeaf, 0, 1 );
Vec_BitWriteEntry( vIsRoot, 0, 1 );
Vec_IntForEachEntryDouble( vTree, Box, Rank, i )
{
Vec_BitWriteEntry( vIsLeaf, Vec_IntEntry(vAdds, 6*Box+0), 1 );
Vec_BitWriteEntry( vIsLeaf, Vec_IntEntry(vAdds, 6*Box+1), 1 );
Vec_BitWriteEntry( vIsLeaf, Vec_IntEntry(vAdds, 6*Box+2), 1 );
Vec_BitWriteEntry( vIsRoot, Vec_IntEntry(vAdds, 6*Box+3), 1 );
Vec_BitWriteEntry( vIsRoot, Vec_IntEntry(vAdds, 6*Box+4), 1 );
}
Vec_IntForEachEntryDouble( vTree, Box, Rank, i )
{
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Vec_WecPush( vBoxes, Rank, Box );
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for ( k = 0; k < 3; k++ )
{
if ( Vec_BitEntry( vIsRoot, Vec_IntEntry(vAdds, 6*Box+k) ) )
continue;
Vec_BitWriteEntry( vIsRoot, Vec_IntEntry(vAdds, 6*Box+k), 1 );
Vec_WecPush( vLeaves, Rank, Vec_IntEntry(vAdds, 6*Box+k) );
}
for ( k = 3; k < 5; k++ )
{
if ( Vec_BitEntry( vIsLeaf, Vec_IntEntry(vAdds, 6*Box+k) ) )
continue;
Vec_BitWriteEntry( vIsLeaf, Vec_IntEntry(vAdds, 6*Box+k), 1 );
Vec_WecPush( vRoots, k == 4 ? Rank + 1 : Rank, Abc_Var2Lit(Abc_Var2Lit(Vec_IntEntry(vAdds, 6*Box+k), k==4), Vec_IntEntry(vAdds, 6*Box+2)!=0) );
}
}
Vec_BitFree( vIsLeaf );
Vec_BitFree( vIsRoot );
// sort each level
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Vec_WecForEachLevel( vBoxes, vLevel, i )
Vec_IntSort( vLevel, 0 );
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Vec_WecForEachLevel( vLeaves, vLevel, i )
Vec_IntSort( vLevel, 0 );
Vec_WecForEachLevel( vRoots, vLevel, i )
Vec_IntSort( vLevel, 0 );
}
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/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Acec_TreeVerifyPhaseOne_rec( Gia_Man_t * p, Gia_Obj_t * pObj )
{
int Truth0, Truth1;
if ( Gia_ObjIsTravIdCurrent(p, pObj) )
return pObj->Value;
Gia_ObjSetTravIdCurrent(p, pObj);
assert( Gia_ObjIsAnd(pObj) );
assert( !Gia_ObjIsXor(pObj) );
Truth0 = Acec_TreeVerifyPhaseOne_rec( p, Gia_ObjFanin0(pObj) );
Truth1 = Acec_TreeVerifyPhaseOne_rec( p, Gia_ObjFanin1(pObj) );
Truth0 = Gia_ObjFaninC0(pObj) ? 0xFF & ~Truth0 : Truth0;
Truth1 = Gia_ObjFaninC1(pObj) ? 0xFF & ~Truth1 : Truth1;
return (pObj->Value = Truth0 & Truth1);
}
void Acec_TreeVerifyPhaseOne( Gia_Man_t * p, Vec_Int_t * vAdds, int iBox, Vec_Bit_t * vPhase )
{
Gia_Obj_t * pObj;
unsigned TruthXor, TruthMaj, Truths[3] = { 0xAA, 0xCC, 0xF0 };
int k, iObj, fFadd = Vec_IntEntry(vAdds, 6*iBox+2) > 0;
//if ( !fFadd )
// return;
Gia_ManIncrementTravId( p );
for ( k = 0; k < 3; k++ )
{
iObj = Vec_IntEntry( vAdds, 6*iBox+k );
if ( iObj == 0 )
continue;
pObj = Gia_ManObj( p, iObj );
pObj->Value = Vec_BitEntry(vPhase, iObj) ? 0xFF & ~Truths[k] : Truths[k];
Gia_ObjSetTravIdCurrent( p, pObj );
}
iObj = Vec_IntEntry( vAdds, 6*iBox+3 );
TruthXor = Acec_TreeVerifyPhaseOne_rec( p, Gia_ManObj(p, iObj) );
TruthXor = Vec_BitEntry(vPhase, iObj) ? 0xFF & ~TruthXor : TruthXor;
iObj = Vec_IntEntry( vAdds, 6*iBox+4 );
TruthMaj = Acec_TreeVerifyPhaseOne_rec( p, Gia_ManObj(p, iObj) );
TruthMaj = Vec_BitEntry(vPhase, iObj) ? 0xFF & ~TruthMaj : TruthMaj;
if ( fFadd ) // FADD
{
if ( TruthXor != 0x96 )
printf( "Fadd %d sum is wrong.\n", iBox );
if ( TruthMaj != 0xE8 )
printf( "Fadd %d carry is wrong.\n", iBox );
}
else
{
if ( TruthXor != 0x66 )
printf( "Hadd %d sum is wrong.\n", iBox );
if ( TruthMaj != 0x88 )
printf( "Hadd %d carry is wrong.\n", iBox );
}
}
void Acec_TreeVerifyPhases( Gia_Man_t * p, Vec_Int_t * vAdds, Vec_Wec_t * vBoxes, Vec_Bit_t * vPhase )
{
Vec_Int_t * vLevel;
int i, k, Box;
Vec_WecForEachLevel( vBoxes, vLevel, i )
Vec_IntForEachEntry( vLevel, Box, k )
Acec_TreeVerifyPhaseOne( p, vAdds, Box, vPhase );
}
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/**Function*************************************************************
Synopsis [Creates polarity.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
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Vec_Int_t * Acec_TreeCarryMap( Gia_Man_t * p, Vec_Int_t * vAdds, Vec_Wec_t * vBoxes )
{
Vec_Int_t * vMap = Vec_IntStartFull( Gia_ManObjNum(p) );
Vec_Int_t * vLevel;
int i, k, Box;
Vec_WecForEachLevel( vBoxes, vLevel, i )
Vec_IntForEachEntry( vLevel, Box, k )
Vec_IntWriteEntry( vMap, Vec_IntEntry(vAdds, 6*Box+4), Box );
return vMap;
}
void Acec_TreePhases_rec( Gia_Man_t * p, Vec_Int_t * vAdds, Vec_Int_t * vMap, int Node, int fPhase,
Vec_Bit_t * vPhase, Vec_Bit_t * vInvHadds, Vec_Bit_t * vVisit )
{
int k, iBox, iXor, Sign, fXorPhase, fPhaseThis;
assert( Node != 0 );
if ( Vec_BitEntry(vVisit, Node) )
{
assert( Vec_BitEntry(vPhase, Node) == fPhase );
return;
}
Vec_BitWriteEntry( vVisit, Node, 1 );
if ( fPhase )
Vec_BitWriteEntry( vPhase, Node, fPhase );
iBox = Vec_IntEntry( vMap, Node );
if ( iBox == -1 )
return;
assert( Node == Vec_IntEntry( vAdds, 6*iBox+4 ) );
iXor = Vec_IntEntry( vAdds, 6*iBox+3 );
Sign = Vec_IntEntry( vAdds, 6*iBox+5 );
fXorPhase = ((Sign >> 3) & 1);
if ( Vec_IntEntry(vAdds, 6*iBox+2) == 0 )
{
fPhase ^= ((Sign >> 2) & 1);
// remember complemented HADD
if ( fPhase )
Vec_BitWriteEntry( vInvHadds, iBox, 1 );
}
for ( k = 0; k < 3; k++ )
{
int iObj = Vec_IntEntry( vAdds, 6*iBox+k );
if ( iObj == 0 )
continue;
fPhaseThis = ((Sign >> k) & 1) ^ fPhase;
fXorPhase ^= fPhaseThis;
Acec_TreePhases_rec( p, vAdds, vMap, iObj, fPhaseThis, vPhase, vInvHadds, vVisit );
}
if ( Vec_BitEntry(vVisit, iXor) )
assert( Vec_BitEntry(vPhase, iXor) == fXorPhase );
if ( fXorPhase )
Vec_BitWriteEntry( vPhase, iXor, fXorPhase );
}
void Acec_TreePhases( Gia_Man_t * p, Vec_Int_t * vAdds, Vec_Wec_t * vBoxes,
Vec_Wec_t * vLeaves, Vec_Wec_t * vRoots,
Vec_Wec_t * vLeafLits, Vec_Wec_t * vRootLits, Vec_Bit_t * vInvHadds )
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{
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Vec_Int_t * vMap = Acec_TreeCarryMap( p, vAdds, vBoxes );
Vec_Bit_t * vPhase = Vec_BitStart( Gia_ManObjNum(p) );
Vec_Bit_t * vVisit = Vec_BitStart( Gia_ManObjNum(p) );
Vec_Int_t * vLevel;
int i, k, iObj;
Vec_WecForEachLevelReverse( vRoots, vLevel, i )
{
Vec_IntForEachEntry( vLevel, iObj, k )
{
int fFadd = Abc_LitIsCompl(iObj);
int fCout = Abc_LitIsCompl(Abc_Lit2Var(iObj));
int Node = Abc_Lit2Var(Abc_Lit2Var(iObj));
if ( !fCout )
continue;
Acec_TreePhases_rec( p, vAdds, vMap, Node, fFadd, vPhase, vInvHadds, vVisit );
}
}
Vec_IntFree( vMap );
Vec_BitFree( vVisit );
Acec_TreeVerifyPhases( p, vAdds, vBoxes, vPhase );
// create leaves
Vec_WecForEachLevel( vLeaves, vLevel, i )
Vec_IntForEachEntry( vLevel, iObj, k )
Vec_WecPush( vLeafLits, i, Abc_Var2Lit(iObj, Vec_BitEntry(vPhase, iObj)) );
// add constants
Vec_WecForEachLevel( vBoxes, vLevel, i )
Vec_IntForEachEntry( vLevel, iObj, k )
if ( Vec_BitEntry(vInvHadds, iObj) )
Vec_WecPush( vLeafLits, i, 1 );
// create roots
Vec_WecForEachLevel( vRoots, vLevel, i )
Vec_IntForEachEntry( vLevel, iObj, k )
iObj >>= 2, Vec_WecPush( vRootLits, i, Abc_Var2Lit(iObj, Vec_BitEntry(vPhase, iObj)) );
// cleanup
Vec_BitFree( vPhase );
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}
/**Function*************************************************************
Synopsis [Derives one adder tree.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
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void Acec_PrintAdders( Vec_Wec_t * vBoxes, Vec_Int_t * vAdds )
{
Vec_Int_t * vLevel;
int i, k, iBox;
Vec_WecForEachLevel( vBoxes, vLevel, i )
{
printf( " %4d : {", i );
Vec_IntForEachEntry( vLevel, iBox, k )
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printf( " %s%d=(%d,%d)", Vec_IntEntry(vAdds, 6*iBox+2) == 0 ? "*":"", iBox,
Vec_IntEntry(vAdds, 6*iBox+3), Vec_IntEntry(vAdds, 6*iBox+4) );
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printf( " }\n" );
}
}
void Vec_WecPrintLits( Vec_Wec_t * p )
{
Vec_Int_t * vVec;
int i, k, Entry;
Vec_WecForEachLevel( p, vVec, i )
{
printf( " %4d : {", i );
Vec_IntForEachEntry( vVec, Entry, k )
printf( " %c%d", Abc_LitIsCompl(Entry) ? '-' : '+', Abc_Lit2Var(Entry) );
printf( " }\n" );
}
}
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void Acec_PrintRootLits( Vec_Wec_t * vRoots )
{
Vec_Int_t * vLevel;
int i, k, iObj;
Vec_WecForEachLevel( vRoots, vLevel, i )
{
printf( "Rank %d : ", i );
Vec_IntForEachEntry( vLevel, iObj, k )
{
int fFadd = Abc_LitIsCompl(iObj);
int fCout = Abc_LitIsCompl(Abc_Lit2Var(iObj));
int Node = Abc_Lit2Var(Abc_Lit2Var(iObj));
printf( "%d%s%s ", Node, fCout ? "*" : "", (fCout && fFadd) ? "*" : "" );
}
printf( "\n" );
}
}
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void Acec_PrintBox( Acec_Box_t * pBox, Vec_Int_t * vAdds )
{
printf( "Adders:\n" );
Acec_PrintAdders( pBox->vAdds, vAdds );
printf( "Inputs:\n" );
Vec_WecPrintLits( pBox->vLeafLits );
printf( "Outputs:\n" );
Vec_WecPrintLits( pBox->vRootLits );
//printf( "Raw outputs:\n" );
//Acec_PrintRootLits( pBox->vRoots );
}
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Acec_Box_t * Acec_CreateBox( Gia_Man_t * p, Vec_Int_t * vAdds, Vec_Int_t * vTree )
{
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int MaxRank = Acec_CreateBoxMaxRank(vTree);
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Acec_Box_t * pBox = ABC_CALLOC( Acec_Box_t, 1 );
pBox->pGia = p;
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pBox->vAdds = Vec_WecStart( MaxRank + 1 );
pBox->vLeafs = Vec_WecStart( MaxRank + 1 );
pBox->vRoots = Vec_WecStart( MaxRank + 2 );
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Acec_TreeInsOuts( p, vAdds, vTree, pBox->vAdds, pBox->vLeafs, pBox->vRoots );
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pBox->vLeafLits = Vec_WecStart( Vec_WecSize(pBox->vLeafs) );
pBox->vRootLits = Vec_WecStart( Vec_WecSize(pBox->vRoots) );
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pBox->vInvHadds = Vec_BitStart( Vec_IntSize(vAdds)/6 );
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Acec_TreePhases( p, vAdds, pBox->vAdds, pBox->vLeafs, pBox->vRoots, pBox->vLeafLits, pBox->vRootLits, pBox->vInvHadds );
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return pBox;
}
void Acec_CreateBoxTest( Gia_Man_t * p )
{
Acec_Box_t * pBox;
Vec_Wec_t * vTrees;
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Vec_Int_t * vTree;
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abctime clk = Abc_Clock();
Vec_Int_t * vAdds = Ree_ManComputeCuts( p, NULL, 1 );
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int i, nFadds = Ree_ManCountFadds( vAdds );
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printf( "Detected %d adders (%d FAs and %d HAs). ", Vec_IntSize(vAdds)/6, nFadds, Vec_IntSize(vAdds)/6-nFadds );
Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
clk = Abc_Clock();
vTrees = Acec_TreeFindTrees( p, vAdds );
printf( "Collected %d trees with %d adders in them. ", Vec_WecSize(vTrees), Vec_WecSizeSize(vTrees)/2 );
Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
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//Vec_WecPrint( vTrees, 0 );
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Vec_WecForEachLevel( vTrees, vTree, i )
{
pBox = Acec_CreateBox( p, vAdds, Vec_WecEntry(vTrees, i) );
printf( "Processing tree %d: Ranks = %d. Adders = %d. Leaves = %d. Roots = %d.\n",
i, Vec_WecSize(pBox->vAdds), Vec_WecSizeSize(pBox->vAdds),
Vec_WecSizeSize(pBox->vLeafLits), Vec_WecSizeSize(pBox->vRootLits) );
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Acec_PrintBox( pBox, vAdds );
Acec_BoxFreeP( &pBox );
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}
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Vec_WecFree( vTrees );
Vec_IntFree( vAdds );
}
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/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
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Acec_Box_t * Acec_DeriveBox( Gia_Man_t * p, int fVerbose )
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{
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Acec_Box_t * pBox = NULL;
Vec_Int_t * vAdds = Ree_ManComputeCuts( p, NULL, fVerbose );
Vec_Wec_t * vTrees = Acec_TreeFindTrees( p, vAdds );
if ( vTrees && Vec_WecSize(vTrees) > 0 )
pBox = Acec_CreateBox( p, vAdds, Vec_WecEntry(vTrees, 0) );
if ( pBox )//&& fVerbose )
printf( "Processing tree %d: Ranks = %d. Adders = %d. Leaves = %d. Roots = %d.\n",
0, Vec_WecSize(pBox->vAdds), Vec_WecSizeSize(pBox->vAdds),
Vec_WecSizeSize(pBox->vLeafLits), Vec_WecSizeSize(pBox->vRootLits) );
if ( pBox && fVerbose )
Acec_PrintBox( pBox, vAdds );
Vec_WecFreeP( &vTrees );
Vec_IntFree( vAdds );
return pBox;
2017-01-10 10:58:24 +01:00
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END