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/**CFile****************************************************************
FileName [acecPool.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [CEC for arithmetic circuits.]
Synopsis [Core procedures.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: acecPool.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "acecInt.h"
#include "misc/vec/vecWec.h"
#include "misc/extra/extra.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Int_t * Acec_ManCreateCarryMap( Gia_Man_t * p, Vec_Int_t * vAdds )
{
// map carries into their boxes
Vec_Int_t * vCarryMap = Vec_IntStartFull( Gia_ManObjNum(p) ); int i;
for ( i = 0; 6*i < Vec_IntSize(vAdds); i++ )
Vec_IntWriteEntry( vCarryMap, Vec_IntEntry(vAdds, 6*i+4), i );
return vCarryMap;
}
int Acec_ManCheckCarryMap( Gia_Man_t * p, int Carry, Vec_Int_t * vAdds, Vec_Int_t * vCarryMap )
{
int iBox = Vec_IntEntry( vCarryMap, Carry );
assert( iBox >= 0 );
return Vec_IntEntry( vCarryMap, Vec_IntEntry(vAdds, 6*iBox+0) ) >= 0 ||
Vec_IntEntry( vCarryMap, Vec_IntEntry(vAdds, 6*iBox+1) ) >= 0 ||
Vec_IntEntry( vCarryMap, Vec_IntEntry(vAdds, 6*iBox+2) ) >= 0;
}
Vec_Int_t * Acec_ManCollectCarryRoots( Gia_Man_t * p, Vec_Int_t * vAdds )
{
Vec_Int_t * vCarryRoots = Vec_IntAlloc( 100 );
Vec_Bit_t * vIns = Vec_BitStart( Gia_ManObjNum(p) ); int i;
// marks box inputs
for ( i = 0; 6*i < Vec_IntSize(vAdds); i++ )
{
Vec_BitWriteEntry( vIns, Vec_IntEntry(vAdds, 6*i+0), 1 );
Vec_BitWriteEntry( vIns, Vec_IntEntry(vAdds, 6*i+1), 1 );
Vec_BitWriteEntry( vIns, Vec_IntEntry(vAdds, 6*i+2), 1 );
}
// collect roots
for ( i = 0; 6*i < Vec_IntSize(vAdds); i++ )
if ( !Vec_BitEntry(vIns, Vec_IntEntry(vAdds, 6*i+4)) )
Vec_IntPush( vCarryRoots, Vec_IntEntry(vAdds, 6*i+4) );
Vec_BitFree( vIns );
return vCarryRoots;
}
Vec_Int_t * Acec_ManCollectXorRoots( Gia_Man_t * p, Vec_Int_t * vXors )
{
Vec_Int_t * vXorRoots = Vec_IntAlloc( 100 );
Vec_Bit_t * vIns = Vec_BitStart( Gia_ManObjNum(p) ); int i;
// marks box inputs
for ( i = 0; 4*i < Vec_IntSize(vXors); i++ )
{
Vec_BitWriteEntry( vIns, Vec_IntEntry(vXors, 4*i+1), 1 );
Vec_BitWriteEntry( vIns, Vec_IntEntry(vXors, 4*i+2), 1 );
Vec_BitWriteEntry( vIns, Vec_IntEntry(vXors, 4*i+3), 1 );
}
// collect roots
for ( i = 0; 4*i < Vec_IntSize(vXors); i++ )
if ( !Vec_BitEntry(vIns, Vec_IntEntry(vXors, 4*i)) )
Vec_IntPush( vXorRoots, Vec_IntEntry(vXors, 4*i) );
Vec_BitFree( vIns );
return vXorRoots;
}
void Acec_ManCountXorTreeInputs_rec( Gia_Man_t * p, int Node, Vec_Int_t * vXors, Vec_Int_t * vXorMap, Vec_Bit_t * vIsCarryRoot, Vec_Int_t * vCarryRootSet, Vec_Int_t * vXorSet )
{
int k, iXorBox;
if ( Node == 0 || Gia_ObjIsTravIdCurrentId(p, Node) )
return;
Gia_ObjSetTravIdCurrentId(p, Node);
iXorBox = Vec_IntEntry( vXorMap, Node );
if ( iXorBox == -1 )
{
if ( Vec_BitEntry(vIsCarryRoot, Node) )
Vec_IntPush( vCarryRootSet, Node );
return;
}
for ( k = 1; k < 4; k++ )
Acec_ManCountXorTreeInputs_rec( p, Vec_IntEntry(vXors, 4*iXorBox+k), vXors, vXorMap, vIsCarryRoot, vCarryRootSet, vXorSet );
Vec_IntPush( vXorSet, Vec_IntEntry(vXors, 4*iXorBox) );
}
Vec_Wec_t * Acec_ManCollectCarryRootSets( Gia_Man_t * p, Vec_Int_t * vAdds, Vec_Int_t * vCarryMap, Vec_Int_t * vXors, Vec_Int_t * vXorRoots, Vec_Int_t * vCarryRoots )
{
Vec_Wec_t * vCarryRootSets = Vec_WecAlloc( 100 ); // XorBoxes, CarryRoots, AdderBoxes, Ins/Ranks, Outs/Ranks
Vec_Int_t * vCarryRootSet = Vec_IntAlloc( 100 );
Vec_Bit_t * vIsCarryRoot = Vec_BitStart( Gia_ManObjNum(p) );
Vec_Int_t * vXorSet = Vec_IntAlloc( 100 ), * vLevel;
int i, k, XorRoot, CarryRoot;
// map XORs into their cuts
Vec_Int_t * vXorMap = Vec_IntStartFull( Gia_ManObjNum(p) );
for ( i = 0; 4*i < Vec_IntSize(vXors); i++ )
Vec_IntWriteEntry( vXorMap, Vec_IntEntry(vXors, 4*i), i );
// create carry root marks
Vec_IntForEachEntry( vCarryRoots, CarryRoot, i )
Vec_BitWriteEntry( vIsCarryRoot, CarryRoot, 1 );
// collect carry roots attached to each XOR root
Vec_IntForEachEntry( vXorRoots, XorRoot, i )
{
Vec_IntClear( vXorSet );
Vec_IntClear( vCarryRootSet );
Gia_ManIncrementTravId( p );
Acec_ManCountXorTreeInputs_rec( p, XorRoot, vXors, vXorMap, vIsCarryRoot, vCarryRootSet, vXorSet );
// skip trivial
Vec_IntForEachEntry( vCarryRootSet, CarryRoot, k )
if ( Acec_ManCheckCarryMap(p, CarryRoot, vAdds, vCarryMap) )
break;
if ( k == Vec_IntSize(vCarryRootSet) )
continue;
Vec_IntSort( vCarryRootSet, 0 );
vLevel = Vec_WecPushLevel( vCarryRootSets );
Vec_IntAppend( vLevel, vXorSet );
vLevel = Vec_WecPushLevel( vCarryRootSets );
Vec_IntAppend( vLevel, vCarryRootSet );
vLevel = Vec_WecPushLevel( vCarryRootSets );
vLevel = Vec_WecPushLevel( vCarryRootSets );
vLevel = Vec_WecPushLevel( vCarryRootSets );
// unmark carry root set
Vec_IntForEachEntry( vCarryRootSet, CarryRoot, k )
{
assert( Vec_BitEntry(vIsCarryRoot, CarryRoot) );
Vec_BitWriteEntry( vIsCarryRoot, CarryRoot, 0 );
}
}
Vec_IntFree( vCarryRootSet );
Vec_IntFree( vXorSet );
Vec_IntFree( vXorMap );
// collect unmarked carry roots
Vec_IntForEachEntry( vCarryRoots, CarryRoot, k )
{
if ( !Vec_BitEntry(vIsCarryRoot, CarryRoot) )
continue;
if ( !Acec_ManCheckCarryMap(p, CarryRoot, vAdds, vCarryMap) )
continue;
vLevel = Vec_WecPushLevel( vCarryRootSets );
vLevel = Vec_WecPushLevel( vCarryRootSets );
Vec_IntFill( vLevel, 1, CarryRoot );
vLevel = Vec_WecPushLevel( vCarryRootSets );
vLevel = Vec_WecPushLevel( vCarryRootSets );
vLevel = Vec_WecPushLevel( vCarryRootSets );
}
Vec_BitFree( vIsCarryRoot );
return vCarryRootSets;
}
int Acec_ManCompareTwo( int * pPair0, int * pPair1 )
{
if ( pPair0[1] < pPair1[1] ) return -1;
if ( pPair0[1] > pPair1[1] ) return 1;
return 0;
}
void Acec_ManCollectInsOuts( Gia_Man_t * p, Vec_Int_t * vAdds, Vec_Int_t * vBoxes, Vec_Int_t * vBoxRanks, Vec_Bit_t * vBoxIns, Vec_Bit_t * vBoxOuts, Vec_Int_t * vResIns, Vec_Int_t * vResOuts )
{
int i, k, iBox, iObj, Rank, RankMax = 0;
// mark box inputs/outputs
Vec_IntForEachEntry( vBoxes, iBox, i )
{
Vec_BitWriteEntry( vBoxIns, Vec_IntEntry(vAdds, 6*iBox+0), 1 );
Vec_BitWriteEntry( vBoxIns, Vec_IntEntry(vAdds, 6*iBox+1), 1 );
Vec_BitWriteEntry( vBoxIns, Vec_IntEntry(vAdds, 6*iBox+2), 1 );
Vec_BitWriteEntry( vBoxOuts, Vec_IntEntry(vAdds, 6*iBox+3), 1 );
Vec_BitWriteEntry( vBoxOuts, Vec_IntEntry(vAdds, 6*iBox+4), 1 );
}
// collect unmarked inputs/output and their ranks
Vec_IntForEachEntry( vBoxes, iBox, i )
{
for ( k = 0; k < 3; k++ )
if ( !Vec_BitEntry(vBoxOuts, Vec_IntEntry(vAdds, 6*iBox+k)) )
Vec_IntPushTwo( vResIns, Vec_IntEntry(vAdds, 6*iBox+k), Vec_IntEntry(vBoxRanks, iBox) );
for ( k = 3; k < 5; k++ )
if ( Vec_IntEntry(vAdds, 6*iBox+k) && !Vec_BitEntry(vBoxIns, Vec_IntEntry(vAdds, 6*iBox+k)) )
Vec_IntPushTwo( vResOuts, Vec_IntEntry(vAdds, 6*iBox+k), Vec_IntEntry(vBoxRanks, iBox)-(int)(k==4) );
}
// unmark box inputs/outputs
Vec_IntForEachEntry( vBoxes, iBox, i )
{
Vec_BitWriteEntry( vBoxIns, Vec_IntEntry(vAdds, 6*iBox+0), 0 );
Vec_BitWriteEntry( vBoxIns, Vec_IntEntry(vAdds, 6*iBox+1), 0 );
Vec_BitWriteEntry( vBoxIns, Vec_IntEntry(vAdds, 6*iBox+2), 0 );
Vec_BitWriteEntry( vBoxOuts, Vec_IntEntry(vAdds, 6*iBox+3), 0 );
Vec_BitWriteEntry( vBoxOuts, Vec_IntEntry(vAdds, 6*iBox+4), 0 );
}
// normalize ranks
Vec_IntForEachEntryDouble( vResIns, iObj, Rank, k )
RankMax = Abc_MaxInt( RankMax, Rank );
Vec_IntForEachEntryDouble( vResOuts, iObj, Rank, k )
RankMax = Abc_MaxInt( RankMax, Rank );
Vec_IntForEachEntryDouble( vResIns, iObj, Rank, k )
Vec_IntWriteEntry( vResIns, k+1, 1 + RankMax - Rank );
Vec_IntForEachEntryDouble( vResOuts, iObj, Rank, k )
Vec_IntWriteEntry( vResOuts, k+1, 1 + RankMax - Rank );
// sort by rank
qsort( Vec_IntArray(vResIns), Vec_IntSize(vResIns)/2, 8, (int (*)(const void *, const void *))Acec_ManCompareTwo );
qsort( Vec_IntArray(vResOuts), Vec_IntSize(vResOuts)/2, 8, (int (*)(const void *, const void *))Acec_ManCompareTwo );
}
void Acec_ManCollectBoxSets_rec( Gia_Man_t * p, int Carry, int iRank, Vec_Int_t * vAdds, Vec_Int_t * vCarryMap, Vec_Int_t * vBoxes, Vec_Int_t * vBoxRanks )
{
int iBox = Vec_IntEntry( vCarryMap, Carry );
if ( iBox == -1 )
return;
Acec_ManCollectBoxSets_rec( p, Vec_IntEntry(vAdds, 6*iBox+0), iRank+1, vAdds, vCarryMap, vBoxes, vBoxRanks );
Acec_ManCollectBoxSets_rec( p, Vec_IntEntry(vAdds, 6*iBox+1), iRank+1, vAdds, vCarryMap, vBoxes, vBoxRanks );
if ( Vec_IntEntry(vAdds, 6*iBox+2) )
Acec_ManCollectBoxSets_rec( p, Vec_IntEntry(vAdds, 6*iBox+2), iRank+1, vAdds, vCarryMap, vBoxes, vBoxRanks );
Vec_IntPush( vBoxes, iBox );
Vec_IntWriteEntry( vBoxRanks, iBox, iRank );
}
Vec_Wec_t * Acec_ManCollectBoxSets( Gia_Man_t * p, Vec_Int_t * vAdds, Vec_Int_t * vXors )
{
Vec_Int_t * vCarryMap = Acec_ManCreateCarryMap( p, vAdds );
Vec_Int_t * vCarryRoots = Acec_ManCollectCarryRoots( p, vAdds );
Vec_Int_t * vXorRoots = Acec_ManCollectXorRoots( p, vXors );
Vec_Wec_t * vBoxSets = Acec_ManCollectCarryRootSets( p, vAdds, vCarryMap, vXors, vXorRoots, vCarryRoots );
Vec_Int_t * vBoxRanks = Vec_IntStart( Vec_IntSize(vAdds)/6 );
Vec_Bit_t * vBoxIns = Vec_BitStart( Gia_ManObjNum(p) );
Vec_Bit_t * vBoxOuts = Vec_BitStart( Gia_ManObjNum(p) ); int i, k, Root;
Vec_IntFree( vCarryRoots );
Vec_IntFree( vXorRoots );
// collect boxes for each carry set
assert( Vec_WecSize(vBoxSets) % 5 == 0 );
for ( i = 0; 5*i < Vec_WecSize(vBoxSets); i++ )
{
Vec_Int_t * vRoots = Vec_WecEntry( vBoxSets, 5*i+1 );
Vec_Int_t * vBoxes = Vec_WecEntry( vBoxSets, 5*i+2 );
Vec_Int_t * vIns = Vec_WecEntry( vBoxSets, 5*i+3 );
Vec_Int_t * vOuts = Vec_WecEntry( vBoxSets, 5*i+4 );
Vec_IntForEachEntry( vRoots, Root, k )
Acec_ManCollectBoxSets_rec( p, Root, 1, vAdds, vCarryMap, vBoxes, vBoxRanks );
Acec_ManCollectInsOuts( p, vAdds, vBoxes, vBoxRanks, vBoxIns, vBoxOuts, vIns, vOuts );
}
Vec_IntFree( vBoxRanks );
Vec_BitFree( vBoxIns );
Vec_BitFree( vBoxOuts );
Vec_IntFree( vCarryMap );
return vBoxSets;
}
void Acec_ManPrintRanks2( Vec_Int_t * vPairs )
{
int k, iObj, Rank;
Vec_IntForEachEntryDouble( vPairs, iObj, Rank, k )
printf( "%d ", Rank );
printf( "\n" );
}
void Acec_ManPrintRanks( Vec_Int_t * vPairs )
{
int k, iObj, Count, Rank, RankMax = 0;
Vec_Int_t * vCounts = Vec_IntStart( 100 );
Vec_IntForEachEntryDouble( vPairs, iObj, Rank, k )
{
Vec_IntFillExtra( vCounts, Rank+1, 0 );
Vec_IntAddToEntry( vCounts, Rank, 1 );
RankMax = Abc_MaxInt( RankMax, Rank );
}
Vec_IntForEachEntryStartStop( vCounts, Count, Rank, 1, RankMax+1 )
printf( "%2d=%2d ", Rank, Count );
printf( "\n" );
Vec_IntFree( vCounts );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Acec_ManProfile( Gia_Man_t * p, int fVerbose )
{
abctime clk = Abc_Clock();
Vec_Wec_t * vBoxes; int i;
Vec_Int_t * vXors, * vAdds = Ree_ManComputeCuts( p, &vXors, fVerbose );
//Ree_ManPrintAdders( vAdds, 1 );
printf( "Detected %d full-adders and %d half-adders. Found %d XOR-cuts. ", Ree_ManCountFadds(vAdds), Vec_IntSize(vAdds)/6-Ree_ManCountFadds(vAdds), Vec_IntSize(vXors)/4 );
Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
clk = Abc_Clock();
vBoxes = Acec_ManCollectBoxSets( p, vAdds, vXors );
printf( "Detected %d adder-tree%s. ", Vec_WecSize(vBoxes)/5, Vec_WecSize(vBoxes)/5 > 1 ? "s":"" );
Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
if ( fVerbose )
for ( i = 0; 5*i < Vec_WecSize(vBoxes); i++ )
{
printf( "Tree %3d : ", i );
printf( "Xor = %4d ", Vec_IntSize(Vec_WecEntry(vBoxes,5*i+0)) );
printf( "Root = %4d ", Vec_IntSize(Vec_WecEntry(vBoxes,5*i+1)) );
//printf( "(Top = %5d) ", Vec_IntEntryLast(Vec_WecEntry(vBoxes,5*i+1)) );
printf( "Adder = %4d ", Vec_IntSize(Vec_WecEntry(vBoxes,5*i+2)) );
printf( "In = %4d ", Vec_IntSize(Vec_WecEntry(vBoxes,5*i+3))/2 );
printf( "Out = %4d ", Vec_IntSize(Vec_WecEntry(vBoxes,5*i+4))/2 );
printf( "\n" );
printf( " Ins: " );
Acec_ManPrintRanks( Vec_WecEntry(vBoxes,5*i+3) );
printf( " Outs: " );
Acec_ManPrintRanks( Vec_WecEntry(vBoxes,5*i+4) );
}
Vec_IntFree( vXors );
Vec_IntFree( vAdds );
Vec_WecFree( vBoxes );
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Bit_t * Acec_ManPoolGetPointed( Gia_Man_t * p, Vec_Int_t * vAdds )
{
Vec_Bit_t * vMarks = Vec_BitStart( Gia_ManObjNum(p) );
int i, k;
for ( i = 0; 6*i < Vec_IntSize(vAdds); i++ )
for ( k = 0; k < 3; k++ )
Vec_BitWriteEntry( vMarks, Vec_IntEntry(vAdds, 6*i+k), 1 );
return vMarks;
}
Vec_Int_t * Acec_ManPoolTopMost( Gia_Man_t * p, Vec_Int_t * vAdds )
{
int i, k, iTop, fVerbose = 0;
Vec_Int_t * vTops = Vec_IntAlloc( 1000 );
Vec_Bit_t * vMarks = Acec_ManPoolGetPointed( p, vAdds );
for ( i = 0; 6*i < Vec_IntSize(vAdds); i++ )
if ( !Vec_BitEntry(vMarks, Vec_IntEntry(vAdds, 6*i+3)) &&
!Vec_BitEntry(vMarks, Vec_IntEntry(vAdds, 6*i+4)) )
Vec_IntPush( vTops, i );
if ( fVerbose )
Vec_IntForEachEntry( vTops, iTop, i )
{
printf( "%4d : ", iTop );
for ( k = 0; k < 3; k++ )
printf( "%4d ", Vec_IntEntry(vAdds, 6*iTop+k) );
printf( " -> " );
for ( k = 3; k < 5; k++ )
printf( "%4d ", Vec_IntEntry(vAdds, 6*iTop+k) );
printf( "\n" );
}
Vec_BitFree( vMarks );
return vTops;
}
void Acec_ManPool( Gia_Man_t * p )
{
Vec_Int_t * vTops, * vTree;
Vec_Wec_t * vTrees;
abctime clk = Abc_Clock();
Vec_Int_t * vAdds = Ree_ManComputeCuts( p, NULL, 1 );
int i, nFadds = Ree_ManCountFadds( vAdds );
printf( "Detected %d FAs and %d HAs. ", nFadds, Vec_IntSize(vAdds)/6-nFadds );
Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
clk = Abc_Clock();
nFadds = Ree_ManCountFadds( vAdds );
printf( "Detected %d FAs and %d HAs. ", nFadds, Vec_IntSize(vAdds)/6-nFadds );
Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
//Ree_ManPrintAdders( vAdds, 1 );
// detect topmost nodes
vTops = Acec_ManPoolTopMost( p, vAdds );
printf( "Detected %d topmost adder%s.\n", Vec_IntSize(vTops), Vec_IntSize(vTops) > 1 ? "s":"" );
// collect adder trees
vTrees = Gia_PolynCoreOrderArray( p, vAdds, vTops );
Vec_WecForEachLevel( vTrees, vTree, i )
printf( "Adder %5d : Tree with %5d nodes.\n", Vec_IntEntry(vTops, i), Vec_IntSize(vTree) );
Vec_WecFree( vTrees );
Vec_IntFree( vAdds );
Vec_IntFree( vTops );
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
|
