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Commit 3cf495c8 by Bruno Schmitt
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Add a new module which implements the fast extract with cube hashing (fxch) algorithm. 

Removes old partial implementation of this algorithm from the "pla" module.
parent 8745fa81
Showing with 497 additions and 39 deletions
Makefile
...@@ -20,7 +20,7 @@ MODULES := \ ...@@ -20,7 +20,7 @@ MODULES := \
src/misc/extra src/misc/mvc src/misc/st src/misc/util src/misc/nm \ src/misc/extra src/misc/mvc src/misc/st src/misc/util src/misc/nm \
src/misc/vec src/misc/hash src/misc/tim src/misc/bzlib src/misc/zlib \ src/misc/vec src/misc/hash src/misc/tim src/misc/bzlib src/misc/zlib \
src/misc/mem src/misc/bar src/misc/bbl src/misc/parse \ src/misc/mem src/misc/bar src/misc/bbl src/misc/parse \
src/opt/cut src/opt/fxu src/opt/rwr src/opt/mfs src/opt/sim \ src/opt/cut src/opt/fxu src/opt/fxch src/opt/rwr src/opt/mfs src/opt/sim \
src/opt/ret src/opt/fret src/opt/res src/opt/lpk src/opt/nwk src/opt/rwt \ src/opt/ret src/opt/fret src/opt/res src/opt/lpk src/opt/nwk src/opt/rwt \
src/opt/cgt src/opt/csw src/opt/dar src/opt/dau src/opt/sfm \ src/opt/cgt src/opt/csw src/opt/dar src/opt/dau src/opt/sfm \
src/sat/bsat src/sat/csat src/sat/msat src/sat/psat src/sat/cnf src/sat/bmc \ src/sat/bsat src/sat/csat src/sat/msat src/sat/psat src/sat/cnf src/sat/bmc \
......
src/base/abci/abc.c
...@@ -23,6 +23,7 @@ ...@@ -23,6 +23,7 @@
#include "base/main/mainInt.h" #include "base/main/mainInt.h"
#include "proof/fraig/fraig.h" #include "proof/fraig/fraig.h"
#include "opt/fxu/fxu.h" #include "opt/fxu/fxu.h"
#include "opt/fxch/Fxch.h"
#include "opt/cut/cut.h" #include "opt/cut/cut.h"
#include "map/fpga/fpga.h" #include "map/fpga/fpga.h"
#include "map/if/if.h" #include "map/if/if.h"
...@@ -106,6 +107,7 @@ static int Abc_CommandRenode ( Abc_Frame_t * pAbc, int argc, cha ...@@ -106,6 +107,7 @@ static int Abc_CommandRenode ( Abc_Frame_t * pAbc, int argc, cha
static int Abc_CommandCleanup ( Abc_Frame_t * pAbc, int argc, char ** argv ); static int Abc_CommandCleanup ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSweep ( Abc_Frame_t * pAbc, int argc, char ** argv ); static int Abc_CommandSweep ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFastExtract ( Abc_Frame_t * pAbc, int argc, char ** argv ); static int Abc_CommandFastExtract ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFxch ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandEliminate ( Abc_Frame_t * pAbc, int argc, char ** argv ); static int Abc_CommandEliminate ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDisjoint ( Abc_Frame_t * pAbc, int argc, char ** argv ); static int Abc_CommandDisjoint ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSparsify ( Abc_Frame_t * pAbc, int argc, char ** argv ); static int Abc_CommandSparsify ( Abc_Frame_t * pAbc, int argc, char ** argv );
...@@ -740,6 +742,7 @@ void Abc_Init( Abc_Frame_t * pAbc ) ...@@ -740,6 +742,7 @@ void Abc_Init( Abc_Frame_t * pAbc )
Cmd_CommandAdd( pAbc, "Synthesis", "cleanup", Abc_CommandCleanup, 1 ); Cmd_CommandAdd( pAbc, "Synthesis", "cleanup", Abc_CommandCleanup, 1 );
Cmd_CommandAdd( pAbc, "Synthesis", "sweep", Abc_CommandSweep, 1 ); Cmd_CommandAdd( pAbc, "Synthesis", "sweep", Abc_CommandSweep, 1 );
Cmd_CommandAdd( pAbc, "Synthesis", "fx", Abc_CommandFastExtract, 1 ); Cmd_CommandAdd( pAbc, "Synthesis", "fx", Abc_CommandFastExtract, 1 );
Cmd_CommandAdd( pAbc, "Synthesis", "fxch", Abc_CommandFxch, 1 );
Cmd_CommandAdd( pAbc, "Synthesis", "eliminate", Abc_CommandEliminate, 1 ); Cmd_CommandAdd( pAbc, "Synthesis", "eliminate", Abc_CommandEliminate, 1 );
Cmd_CommandAdd( pAbc, "Synthesis", "dsd", Abc_CommandDisjoint, 1 ); Cmd_CommandAdd( pAbc, "Synthesis", "dsd", Abc_CommandDisjoint, 1 );
Cmd_CommandAdd( pAbc, "Synthesis", "sparsify", Abc_CommandSparsify, 1 ); Cmd_CommandAdd( pAbc, "Synthesis", "sparsify", Abc_CommandSparsify, 1 );
...@@ -4130,6 +4133,103 @@ usage: ...@@ -4130,6 +4133,103 @@ usage:
SeeAlso [] SeeAlso []
***********************************************************************/ ***********************************************************************/
static int Abc_CommandFxch( Abc_Frame_t * pAbc, int argc, char ** argv )
{
extern int Abc_NtkFxchPerform( Abc_Ntk_t * pNtk, int nMaxDivExt, int SMode, int fVerbose, int fVeryVerbose );
Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
int c,
nMaxDivExt,
SMode = 0,
fVerbose = 0,
fVeryVerbose = 0;
Extra_UtilGetoptReset();
while ( (c = Extra_UtilGetopt(argc, argv, "NSvwh")) != EOF )
{
switch (c)
{
case 'N':
if ( globalUtilOptind >= argc )
{
Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
goto usage;
}
nMaxDivExt = atoi( argv[globalUtilOptind] );
globalUtilOptind++;
if ( nMaxDivExt < 0 )
goto usage;
break;
case 'S':
SMode ^= 1;
break;
case 'v':
fVerbose ^= 1;
break;
case 'w':
fVeryVerbose ^= 1;
break;
case 'h':
goto usage;
break;
default:
goto usage;
}
}
if ( pNtk == NULL )
{
Abc_Print( -1, "Empty network.\n" );
return 1;
}
if ( Abc_NtkNodeNum( pNtk ) == 0 )
{
Abc_Print( -1, "The network does not have internal nodes.\n" );
return 1;
}
if ( !Abc_NtkIsLogic( pNtk ) )
{
Abc_Print( -1, "Fast extract can only be applied to a logic network (run \"renode\" or \"if\").\n" );
return 1;
}
if ( !Abc_NtkIsSopLogic( pNtk ) )
{
Abc_Print( -1, "Fast extract can only be applied to a logic network with SOP local functions (run \"bdd; sop\").\n" );
return 1;
}
Abc_NtkFxchPerform( pNtk, nMaxDivExt, SMode, fVerbose, fVeryVerbose );
return 0;
usage:
Abc_Print( -2, "usage: fxch [-N <num>] [-vwh]\n");
Abc_Print( -2, "\t performs fast extract with cube hashing on the current network\n");
Abc_Print( -2, "\t-N <num> : max number of divisors to extract during this run [default = %d]\n", nMaxDivExt );
Abc_Print( -2, "\t-S : memory saving mode (slower) [default = %d]\n", SMode );
Abc_Print( -2, "\t-v : print verbose information [default = %s]\n", fVerbose? "yes": "no" );
Abc_Print( -2, "\t-w : print additional information [default = %s]\n", fVeryVerbose? "yes": "no" );
Abc_Print( -2, "\t-h : print the command usage\n");
return 1;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Abc_CommandEliminate( Abc_Frame_t * pAbc, int argc, char ** argv ) int Abc_CommandEliminate( Abc_Frame_t * pAbc, int argc, char ** argv )
{ {
Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc); Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
src/base/pla/module.make
SRC += src/base/pla/plaCom.c \ SRC += src/base/pla/plaCom.c \
src/base/pla/plaHash.c \ src/base/pla/plaHash.c \
src/base/pla/plaFxch.c \
src/base/pla/plaMan.c \ src/base/pla/plaMan.c \
src/base/pla/plaMerge.c \ src/base/pla/plaMerge.c \
src/base/pla/plaSimple.c \ src/base/pla/plaSimple.c \
src/base/pla/plaRead.c \ src/base/pla/plaRead.c \
src/base/pla/plaWrite.c src/base/pla/plaWrite.c
src/base/pla/pla.h
...@@ -9,7 +9,7 @@ ...@@ -9,7 +9,7 @@
Synopsis [Scalable SOP transformations.] Synopsis [Scalable SOP transformations.]
Author [Alan Mishchenko] Author [Alan Mishchenko]
Affiliation [UC Berkeley] Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - March 18, 2015.] Date [Ver. 1.0. Started - March 18, 2015.]
...@@ -34,7 +34,7 @@ ...@@ -34,7 +34,7 @@
/// PARAMETERS /// /// PARAMETERS ///
//////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_HEADER_START ABC_NAMESPACE_HEADER_START
#define MASK55 ABC_CONST(0x5555555555555555) #define MASK55 ABC_CONST(0x5555555555555555)
...@@ -43,25 +43,25 @@ ABC_NAMESPACE_HEADER_START ...@@ -43,25 +43,25 @@ ABC_NAMESPACE_HEADER_START
//////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////
// file types // file types
typedef enum { typedef enum {
PLA_FILE_FD = 0, PLA_FILE_FD = 0,
PLA_FILE_F, PLA_FILE_F,
PLA_FILE_FR, PLA_FILE_FR,
PLA_FILE_FDR, PLA_FILE_FDR,
PLA_FILE_NONE PLA_FILE_NONE
} Pla_File_t; } Pla_File_t;
// literal types // literal types
typedef enum { typedef enum {
PLA_LIT_DASH = 0, PLA_LIT_DASH = 0,
PLA_LIT_ZERO, PLA_LIT_ZERO,
PLA_LIT_ONE, PLA_LIT_ONE,
PLA_LIT_FULL PLA_LIT_FULL
} Pla_Lit_t; } Pla_Lit_t;
typedef struct Pla_Man_t_ Pla_Man_t; typedef struct Pla_Man_t_ Pla_Man_t;
struct Pla_Man_t_ struct Pla_Man_t_
{ {
char * pName; // model name char * pName; // model name
char * pSpec; // input file char * pSpec; // input file
...@@ -112,17 +112,17 @@ static inline void Pla_CubeXorLit( word * p, int i, Pla_Lit_t d ) { p[i>>5] ^ ...@@ -112,17 +112,17 @@ static inline void Pla_CubeXorLit( word * p, int i, Pla_Lit_t d ) { p[i>>5] ^
//////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////
#define Pla_ForEachCubeIn( p, pCube, i ) \ #define Pla_ForEachCubeIn( p, pCube, i ) \
for ( i = 0; (i < Pla_ManCubeNum(p)) && (((pCube) = Pla_CubeIn(p, i)), 1); i++ ) for ( i = 0; (i < Pla_ManCubeNum(p)) && (((pCube) = Pla_CubeIn(p, i)), 1); i++ )
#define Pla_ForEachCubeInStart( p, pCube, i, Start ) \ #define Pla_ForEachCubeInStart( p, pCube, i, Start ) \
for ( i = Start; (i < Pla_ManCubeNum(p)) && (((pCube) = Pla_CubeIn(p, i)), 1); i++ ) for ( i = Start; (i < Pla_ManCubeNum(p)) && (((pCube) = Pla_CubeIn(p, i)), 1); i++ )
#define Pla_ForEachCubeOut( p, pCube, i ) \ #define Pla_ForEachCubeOut( p, pCube, i ) \
for ( i = 0; (i < Pla_ManCubeNum(p)) && (((pCube) = Pla_CubeOut(p, i)), 1); i++ ) for ( i = 0; (i < Pla_ManCubeNum(p)) && (((pCube) = Pla_CubeOut(p, i)), 1); i++ )
#define Pla_ForEachCubeInOut( p, pCubeIn, pCubeOut, i ) \ #define Pla_ForEachCubeInOut( p, pCubeIn, pCubeOut, i ) \
for ( i = 0; (i < Pla_ManCubeNum(p)) && (((pCubeIn) = Pla_CubeIn(p, i)), 1) && (((pCubeOut) = Pla_CubeOut(p, i)), 1); i++ ) for ( i = 0; (i < Pla_ManCubeNum(p)) && (((pCubeIn) = Pla_CubeIn(p, i)), 1) && (((pCubeOut) = Pla_CubeOut(p, i)), 1); i++ )
#define Pla_CubeForEachLit( nVars, pCube, Lit, i ) \ #define Pla_CubeForEachLit( nVars, pCube, Lit, i ) \
for ( i = 0; (i < nVars) && (((Lit) = Pla_CubeGetLit(pCube, i)), 1); i++ ) for ( i = 0; (i < nVars) && (((Lit) = Pla_CubeGetLit(pCube, i)), 1); i++ )
#define Pla_CubeForEachLitIn( p, pCube, Lit, i ) \ #define Pla_CubeForEachLitIn( p, pCube, Lit, i ) \
Pla_CubeForEachLit( Pla_ManInNum(p), pCube, Lit, i ) Pla_CubeForEachLit( Pla_ManInNum(p), pCube, Lit, i )
#define Pla_CubeForEachLitOut( p, pCube, Lit, i ) \ #define Pla_CubeForEachLitOut( p, pCube, Lit, i ) \
...@@ -138,7 +138,7 @@ static inline void Pla_CubeXorLit( word * p, int i, Pla_Lit_t d ) { p[i>>5] ^ ...@@ -138,7 +138,7 @@ static inline void Pla_CubeXorLit( word * p, int i, Pla_Lit_t d ) { p[i>>5] ^
Synopsis [Checks if cubes are distance-1.] Synopsis [Checks if cubes are distance-1.]
Description [] Description []
SideEffects [] SideEffects []
SeeAlso [] SeeAlso []
...@@ -175,7 +175,7 @@ static inline int Pla_CubesAreConsensus( word * p, word * q, int nWords, int * p ...@@ -175,7 +175,7 @@ static inline int Pla_CubesAreConsensus( word * p, word * q, int nWords, int * p
if ( fFound ) if ( fFound )
return 0; return 0;
// check if the number of 1s is one, which means exactly one opposite literal (0/1) but may have other diffs (-/0 or -/1) // check if the number of 1s is one, which means exactly one opposite literal (0/1) but may have other diffs (-/0 or -/1)
Test = ((p[c] ^ q[c]) & ((p[c] ^ q[c]) >> 1)) & MASK55; Test = ((p[c] ^ q[c]) & ((p[c] ^ q[c]) >> 1)) & MASK55;
if ( !Pla_OnlyOneOne(Test) ) if ( !Pla_OnlyOneOne(Test) )
return 0; return 0;
fFound = 1; fFound = 1;
...@@ -185,12 +185,12 @@ static inline int Pla_CubesAreConsensus( word * p, word * q, int nWords, int * p ...@@ -185,12 +185,12 @@ static inline int Pla_CubesAreConsensus( word * p, word * q, int nWords, int * p
} }
static inline int Pla_TtCountOnesOne( word x ) static inline int Pla_TtCountOnesOne( word x )
{ {
x = x - ((x >> 1) & ABC_CONST(0x5555555555555555)); x = x - ((x >> 1) & ABC_CONST(0x5555555555555555));
x = (x & ABC_CONST(0x3333333333333333)) + ((x >> 2) & ABC_CONST(0x3333333333333333)); x = (x & ABC_CONST(0x3333333333333333)) + ((x >> 2) & ABC_CONST(0x3333333333333333));
x = (x + (x >> 4)) & ABC_CONST(0x0F0F0F0F0F0F0F0F); x = (x + (x >> 4)) & ABC_CONST(0x0F0F0F0F0F0F0F0F);
x = x + (x >> 8); x = x + (x >> 8);
x = x + (x >> 16); x = x + (x >> 16);
x = x + (x >> 32); x = x + (x >> 32);
return (int)(x & 0xFF); return (int)(x & 0xFF);
} }
static inline int Pla_TtCountOnes( word * p, int nWords ) static inline int Pla_TtCountOnes( word * p, int nWords )
...@@ -200,13 +200,13 @@ static inline int Pla_TtCountOnes( word * p, int nWords ) ...@@ -200,13 +200,13 @@ static inline int Pla_TtCountOnes( word * p, int nWords )
Count += Pla_TtCountOnesOne( p[i] ); Count += Pla_TtCountOnesOne( p[i] );
return Count; return Count;
} }
/**Function************************************************************* /**Function*************************************************************
Synopsis [Manager APIs.] Synopsis [Manager APIs.]
Description [] Description []
SideEffects [] SideEffects []
SeeAlso [] SeeAlso []
...@@ -268,8 +268,7 @@ static inline void Pla_ManPrintStats( Pla_Man_t * p, int fVerbose ) ...@@ -268,8 +268,7 @@ static inline void Pla_ManPrintStats( Pla_Man_t * p, int fVerbose )
} }
/*=== plaFxch.c ========================================================*/
extern int Pla_ManPerformFxch( Pla_Man_t * p );
/*=== plaHash.c ========================================================*/ /*=== plaHash.c ========================================================*/
extern int Pla_ManHashDist1NumTest( Pla_Man_t * p ); extern int Pla_ManHashDist1NumTest( Pla_Man_t * p );
extern void Pla_ManComputeDist1Test( Pla_Man_t * p ); extern void Pla_ManComputeDist1Test( Pla_Man_t * p );
...@@ -296,4 +295,3 @@ ABC_NAMESPACE_HEADER_END ...@@ -296,4 +295,3 @@ ABC_NAMESPACE_HEADER_END
//////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////
/// END OF FILE /// /// END OF FILE ///
//////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////
src/base/pla/plaCom.c
...@@ -9,7 +9,7 @@ ...@@ -9,7 +9,7 @@
Synopsis [Scalable SOP transformations.] Synopsis [Scalable SOP transformations.]
Author [Alan Mishchenko] Author [Alan Mishchenko]
Affiliation [UC Berkeley] Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - March 18, 2015.] Date [Ver. 1.0. Started - March 18, 2015.]
...@@ -396,7 +396,7 @@ usage: ...@@ -396,7 +396,7 @@ usage:
Description [] Description []
SideEffects [] SideEffects []
SeeAlso [] SeeAlso []
...@@ -488,7 +488,7 @@ int Abc_CommandTest( Abc_Frame_t * pAbc, int argc, char ** argv ) ...@@ -488,7 +488,7 @@ int Abc_CommandTest( Abc_Frame_t * pAbc, int argc, char ** argv )
//Pla_ManFxPerformSimple( nVars ); //Pla_ManFxPerformSimple( nVars );
//Pla_ManConvertFromBits( p ); //Pla_ManConvertFromBits( p );
//Pla_ManConvertToBits( p ); //Pla_ManConvertToBits( p );
Pla_ManPerformFxch( p ); //Pla_ManPerformFxch( p );
return 0; return 0;
usage: usage:
Abc_Print( -2, "usage: |test [-N num] [-vh]\n" ); Abc_Print( -2, "usage: |test [-N num] [-vh]\n" );
...@@ -505,4 +505,3 @@ usage: ...@@ -505,4 +505,3 @@ usage:
ABC_NAMESPACE_IMPL_END ABC_NAMESPACE_IMPL_END
src/opt/fxch/Fxch.c 0 → 100644
/**CFile****************************************************************
FileName [ Fxch.c ]
PackageName [ Fast eXtract with Cube Hashing (FXCH) ]
Synopsis [ The entrance into the fast extract module. ]
Author [ Bruno Schmitt - boschmitt at inf.ufrgs.br ]
Affiliation [ UFRGS ]
Date [ Ver. 1.0. Started - March 6, 2016. ]
Revision []
***********************************************************************/
#include "Fxch.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [ Performs fast extract with cube hashing on a set
of covers. ]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Fxch_FastExtract( Vec_Wec_t* vCubes,
int ObjIdMax,
int nMaxDivExt,
int SMode,
int fVerbose,
int fVeryVerbose )
{
abctime TempTime;
Fxch_Man_t* pFxchMan = Fxch_ManAlloc( vCubes, SMode );
TempTime = Abc_Clock();
Fxch_ManMapLiteralsIntoCubes( pFxchMan, ObjIdMax );
Fxch_ManGenerateLitHashKeys( pFxchMan );
Fxch_ManComputeLevel( pFxchMan );
Fxch_ManSCHashTablesInit( pFxchMan );
Fxch_ManDivCreate( pFxchMan );
pFxchMan->timeInit = Abc_Clock() - TempTime;
if ( fVeryVerbose )
Fxch_ManPrintDivs( pFxchMan );
if ( fVerbose )
Fxch_ManPrintStats( pFxchMan );
TempTime = Abc_Clock();
for ( int i = 0; i < nMaxDivExt && Vec_QueTopPriority( pFxchMan->vDivPrio ) > 0.0; i++ )
{
int iDiv = Vec_QuePop( pFxchMan->vDivPrio );
if ( fVeryVerbose )
Fxch_DivPrint( pFxchMan, iDiv );
Fxch_ManUpdate( pFxchMan, iDiv );
}
pFxchMan->timeExt = Abc_Clock() - TempTime;
if ( fVerbose )
{
Fxch_ManPrintStats( pFxchMan );
Abc_PrintTime( 1, "\n[FXCH] Elapsed Time", pFxchMan->timeInit + pFxchMan->timeExt );
Abc_PrintTime( 1, "[FXCH] +-> Init", pFxchMan->timeInit );
Abc_PrintTime( 1, "[FXCH] +-> Extr", pFxchMan->timeExt );
}
Fxch_ManSCHashTablesFree( pFxchMan );
Fxch_ManFree( pFxchMan );
Vec_WecRemoveEmpty( vCubes );
return 1;
}
/**Function*************************************************************
Synopsis [ Retrives the necessary information for the fast extract
with cube hashing. ]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Abc_NtkFxchPerform( Abc_Ntk_t* pNtk,
int nMaxDivExt,
int SMode,
int fVerbose,
int fVeryVerbose )
{
Vec_Wec_t* vCubes;
assert( Abc_NtkIsSopLogic( pNtk ) );
if ( !Abc_NtkFxCheck( pNtk ) )
{
printf( "Abc_NtkFxchPerform(): Nodes have duplicated fanins. FXCH is not performed.\n" );
return 0;
}
vCubes = Abc_NtkFxRetrieve( pNtk );
if ( Fxch_FastExtract( vCubes, Abc_NtkObjNumMax( pNtk ), nMaxDivExt, SMode, fVerbose, fVeryVerbose ) > 0 )
{
Abc_NtkFxInsert( pNtk, vCubes );
Vec_WecFree( vCubes );
if ( !Abc_NtkCheck( pNtk ) )
printf( "Abc_NtkFxchPerform(): The network check has failed.\n" );
return 1;
}
else
printf( "Warning: The network has not been changed by \"fxch\".\n" );
Vec_WecFree( vCubes );
return 0;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
src/opt/fxch/Fxch.h 0 → 100644
/**CFile****************************************************************
FileName [ Fxch.h ]
PackageName [ Fast eXtract with Cube Hashing (FXCH) ]
Synopsis [ External declarations of fast extract with cube hashing. ]
Author [ Bruno Schmitt - boschmitt at inf.ufrgs.br ]
Affiliation [ UFRGS ]
Date [ Ver. 1.0. Started - March 6, 2016. ]
Revision []
***********************************************************************/
#ifndef ABC__opt__fxch__fxch_h
#define ABC__opt__fxch__fxch_h
#include "base/abc/abc.h"
#include "misc/vec/vecHsh.h"
#include "misc/vec/vecQue.h"
#include "misc/vec/vecVec.h"
#include "misc/vec/vecWec.h"
ABC_NAMESPACE_HEADER_START
////////////////////////////////////////////////////////////////////////
/// TYPEDEF DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
typedef struct Fxch_Man_t_ Fxch_Man_t;
typedef struct Fxch_SubCube_t_ Fxch_SubCube_t;
typedef struct Fxch_SCHashTable_t_ Fxch_SCHashTable_t;
typedef struct Fxch_SCHashTable_Entry_t_ Fxch_SCHashTable_Entry_t;
////////////////////////////////////////////////////////////////////////
/// STRUCTURES DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/* Sub-Cube Structure
*
* In the context of this program, a sub-cube is a cube derived from
* another cube by removing one or two literals. Since a cube is represented
* as a vector of literals, one might think that a sub-cube would also be
* represented in the same way. However, in order to same memory, we only
* store a sub-cube identifier and the data necessary to generate the sub-cube:
* - The index number of the orignal cube in the cover. (iCube)
* - Identifiers of which literal(s) was(were) removed. (iLit0, iLit1)
*
* The sub-cube identifier is generated by adding the unique identifiers of
* its literals.
*
*/
struct Fxch_SubCube_t_
{
unsigned int Id,
iCube;
unsigned int iLit0 : 16,
iLit1 : 16;
};
/* Sub-cube Hash Table
*
*/
struct Fxch_SCHashTable_Entry_t_
{
Fxch_SubCube_t SCData;
unsigned int iTable : 31,
Used : 1;
unsigned int iPrev,
iNext;
};
struct Fxch_SCHashTable_t_
{
Fxch_Man_t* pFxchMan;
/* Internal data */
Fxch_SCHashTable_Entry_t* pBins;
unsigned int nEntries,
SizeMask;
Vec_Int_t* vCubeLinks;
/* Temporary data */
Vec_Int_t vSubCube0;
Vec_Int_t vSubCube1;
};
struct Fxch_Man_t_
{
/* user's data */
Vec_Wec_t* vCubes;
int LitCountMax;
/* internal data */
Fxch_SCHashTable_t* pSCHashTable;
Vec_Wec_t* vLits; /* lit -> cube */
Vec_Int_t* vLitCount; /* literal counts (currently not used) */
Vec_Int_t* vLitHashKeys; /* Literal hash keys used to generate subcube hash */
Hsh_VecMan_t* pDivHash;
Vec_Flt_t* vDivWeights; /* divisor weights */
Vec_Que_t* vDivPrio; /* priority queue for divisors by weight */
Vec_Wec_t* vDivCubePairs; /* cube pairs for each div */
Vec_Int_t* vLevels; /* variable levels */
// temporary data to update the data-structure when a divisor is extracted
Vec_Int_t* vCubesS; /* cubes for the given single cube divisor */
Vec_Int_t* vPairs; /* cube pairs for the given double cube divisor */
Vec_Int_t* vCubeFree; // cube-free divisor
Vec_Int_t* vDiv; // selected divisor
/* Config */
char SMode; /* Saving Memory mode */
/* Statistics */
abctime timeInit; /* Initialization time */
abctime timeExt; /* Extraction time */
int nVars; // original problem variables
int nLits; // the number of SOP literals
int nPairsS; // number of lit pairs
int nPairsD; // number of cube pairs
int nExtDivs; /* Number of extracted divisor */
};
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/* The following functions are from abcFx.c
* They are use in order to retrive SOP information for fast_extract
* Since I want an implementation that change only the core part of
* the algorithm I'm using this */
extern Vec_Wec_t* Abc_NtkFxRetrieve( Abc_Ntk_t* pNtk );
extern void Abc_NtkFxInsert( Abc_Ntk_t* pNtk, Vec_Wec_t* vCubes );
extern int Abc_NtkFxCheck( Abc_Ntk_t* pNtk );
/*===== Fxch.c =======================================================*/
int Abc_NtkFxchPerform( Abc_Ntk_t* pNtk, int nMaxDivExt, int SMode, int fVerbose, int fVeryVerbose );
int Fxch_FastExtract( Vec_Wec_t* vCubes, int ObjIdMax, int nMaxDivExt, int SMode, int fVerbose, int fVeryVerbose );
/*===== FxchDiv.c ====================================================================================================*/
int Fxch_DivCreate( Fxch_Man_t* pFxchMan, Fxch_SubCube_t* pSubCube0, Fxch_SubCube_t* pSubCube1 );
int Fxch_DivAdd( Fxch_Man_t* pFxchMan, int fUpdate, int fSingleCube, int fBase );
int Fxch_DivRemove( Fxch_Man_t* pFxchMan, int fUpdate, int fSingleCube, int fBase );
void Fxch_DivSepareteCubes( Vec_Int_t* vDiv, Vec_Int_t* vCube0, Vec_Int_t* vCube1 );
int Fxch_DivRemoveLits( Vec_Int_t* vCube0, Vec_Int_t* vCube1, Vec_Int_t* vDiv, int *fCompl );
void Fxch_DivPrint( Fxch_Man_t* pFxchMan, int iDiv );
/* XXX: The following functions were adapted from "fx" to be used by the Saving Memory mode */
void Fxch_DivFindPivots( Vec_Int_t* vDiv, int* pLit0, int* pLit1 );
int Fxch_DivFind( Vec_Int_t* vCube0, Vec_Int_t* vCube1, Vec_Int_t* vCubeFree );
void Fxch_DivFindCubePairs( Fxch_Man_t* pFxchMan, Vec_Int_t* vCubes_Lit0, Vec_Int_t* vCubes_Lit1 );
/*===== FxchMan.c ====================================================================================================*/
Fxch_Man_t* Fxch_ManAlloc( Vec_Wec_t* vCubes, char SMode );
void Fxch_ManFree( Fxch_Man_t* pFxchMan );
void Fxch_ManMapLiteralsIntoCubes( Fxch_Man_t* pFxchMan, int nVars );
void Fxch_ManGenerateLitHashKeys( Fxch_Man_t* pFxchMan );
void Fxch_ManSCHashTablesInit( Fxch_Man_t* pFxchMan );
void Fxch_ManSCHashTablesFree( Fxch_Man_t* pFxchMan );
void Fxch_ManDivCreate( Fxch_Man_t* pFxchMan );
int Fxch_ManComputeLevelDiv( Fxch_Man_t* pFxchMan, Vec_Int_t* vCubeFree );
int Fxch_ManComputeLevelCube( Fxch_Man_t* pFxchMan, Vec_Int_t* vCube );
void Fxch_ManComputeLevel( Fxch_Man_t* pFxchMan );
void Fxch_ManUpdate( Fxch_Man_t* pFxchMan, int iDiv );
void Fxch_ManPrintDivs( Fxch_Man_t* pFxchMan );
void Fxch_ManPrintStats( Fxch_Man_t* pFxchMan );
static inline Vec_Int_t* Fxch_ManGetCube( Fxch_Man_t* pFxchMan,
int iCube )
{
return Vec_WecEntry( pFxchMan->vCubes, iCube );
}
static inline int Fxch_ManGetLit( Fxch_Man_t* pFxchMan,
int iCube,
int iLit )
{
return Vec_IntEntry( Vec_WecEntry(pFxchMan->vCubes, iCube), iLit );
}
/*===== FxchSCHashTable.c ============================================*/
Fxch_SCHashTable_t* Fxch_SCHashTableCreate( Fxch_Man_t* pFxchMan, Vec_Int_t* vCubeLinks, int nEntries );
void Fxch_SCHashTableDelete( Fxch_SCHashTable_t* );
int Fxch_SCHashTableInsert( Fxch_SCHashTable_t* pSCHashTable,
Vec_Wec_t* vCubes,
unsigned int SubCubeID,
unsigned int iSubCube,
unsigned int iCube,
unsigned int iLit0,
unsigned int iLit1,
char fUpdate );
int Fxch_SCHashTableRemove( Fxch_SCHashTable_t* pSCHashTable,
Vec_Wec_t* vCubes,
unsigned int SubCubeID,
unsigned int iSubCube,
unsigned int iCube,
unsigned int iLit0,
unsigned int iLit1,
char fUpdate );
unsigned int Fxch_SCHashTableMemory( Fxch_SCHashTable_t* );
void Fxch_SCHashTablePrint( Fxch_SCHashTable_t* );
ABC_NAMESPACE_HEADER_END
#endif
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
src/opt/fxch/module.make 0 → 100644
SRC += src/opt/fxch/Fxch.c \
src/opt/fxch/FxchDiv.c \
src/opt/fxch/FxchMan.c \
src/opt/fxch/FxchSCHashTable.c \
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