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/**CFile****************************************************************
FileName [rwr.h]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [DAG-aware AIG rewriting package.]
Synopsis [External declarations.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: rwr.h,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#ifndef __RWR_H__
#define __RWR_H__
////////////////////////////////////////////////////////////////////////
/// INCLUDES ///
////////////////////////////////////////////////////////////////////////
#include "abc.h"
////////////////////////////////////////////////////////////////////////
/// PARAMETERS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// BASIC TYPES ///
////////////////////////////////////////////////////////////////////////
#define RWR_LIMIT 1048576/4 // ((1 << 20)
typedef struct Rwr_Man_t_ Rwr_Man_t;
typedef struct Rwr_Node_t_ Rwr_Node_t;
typedef struct Rwr_Cut_t_ Rwr_Cut_t;
struct Rwr_Man_t_
{
// internal lookups
int nFuncs; // number of four var functions
unsigned short * puCanons; // canonical forms
char * pPhases; // canonical phases
char * pPerms; // canonical permutations
unsigned char * pMap; // mapping of functions into class numbers
char * pPractical; // practical NPN classes
unsigned short ** puPerms43; // four-var permutations for three var functions
// node space
Vec_Ptr_t * vForest; // all the nodes
Rwr_Node_t ** pTable; // the hash table of nodes by their canonical form
Vec_Vec_t * vClasses; // the nodes of the equivalence classes
Extra_MmFixed_t * pMmNode; // memory for nodes and cuts
// statistical variables
int nTravIds; // the counter of traversal IDs
int nConsidered; // the number of nodes considered
int nAdded; // the number of nodes added to lists
int nClasses; // the number of NN classes
// intermediate data
Vec_Int_t * vFanNums; // the number of fanouts of each node (used to free cuts)
Vec_Int_t * vReqTimes; // the required times for each node (used for delay-driven evalution)
// the result of resynthesis
Vec_Int_t * vForm; // the decomposition tree (temporary)
Vec_Int_t * vLevNums; // the array of levels (temporary)
Vec_Ptr_t * vFanins; // the fanins array (temporary)
int nGainMax;
// runtime statistics
int time1;
int time2;
int time3;
int time4;
};
struct Rwr_Node_t_ // 24 bytes
{
int Id; // ID
int TravId; // traversal ID
unsigned uTruth : 16; // truth table
unsigned Volume : 8; // volume
unsigned Level : 6; // level
unsigned fUsed : 1; // mark
unsigned fExor : 1; // mark
Rwr_Node_t * p0; // first child
Rwr_Node_t * p1; // second child
Rwr_Node_t * pNext; // next in the table
};
struct Rwr_Cut_t_ // 24 bytes
{
unsigned nLeaves : 3; // the number of leaves
unsigned fTime : 1; // set to 1 if meets the required times
unsigned fGain : 1; // set to 1 if does not increase nodes
unsigned Volume : 11; // the gain in the number of nodes
unsigned uTruth : 16; // the truth table
Abc_Obj_t * ppLeaves[4]; // the leaves
Rwr_Cut_t * pNext; // the next cut in the list
};
// manipulation of complemented attributes
static inline bool Rwr_IsComplement( Rwr_Node_t * p ) { return (bool)(((unsigned)p) & 01); }
static inline Rwr_Node_t * Rwr_Regular( Rwr_Node_t * p ) { return (Rwr_Node_t *)((unsigned)(p) & ~01); }
static inline Rwr_Node_t * Rwr_Not( Rwr_Node_t * p ) { return (Rwr_Node_t *)((unsigned)(p) ^ 01); }
static inline Rwr_Node_t * Rwr_NotCond( Rwr_Node_t * p, int c ) { return (Rwr_Node_t *)((unsigned)(p) ^ (c)); }
////////////////////////////////////////////////////////////////////////
/// MACRO DEFITIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
/*=== rwrCut.c ========================================================*/
extern void Rwr_NtkStartCuts( Rwr_Man_t * p, Abc_Ntk_t * pNtk );
extern void Rwr_NodeComputeCuts( Rwr_Man_t * p, Abc_Obj_t * pNode );
/*=== rwrEva.c ========================================================*/
extern int Rwr_NodeRewrite( Rwr_Man_t * p, Abc_Obj_t * pNode );
extern void Rwr_ManPreprocess( Rwr_Man_t * p );
/*=== rwrLib.c ========================================================*/
extern void Rwr_ManPrecompute( Rwr_Man_t * p );
extern Rwr_Node_t * Rwr_ManAddVar( Rwr_Man_t * p, unsigned uTruth, int fPrecompute );
extern Rwr_Node_t * Rwr_ManAddNode( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1, int fExor, int Level, int Volume );
extern int Rwr_ManNodeVolume( Rwr_Man_t * p, Rwr_Node_t * p0, Rwr_Node_t * p1 );
extern void Rwr_ManIncTravId( Rwr_Man_t * p );
/*=== rwrMan.c ========================================================*/
extern Rwr_Man_t * Rwr_ManStart( bool fPrecompute );
extern void Rwr_ManStop( Rwr_Man_t * p );
extern void Rwr_ManPrepareNetwork( Rwr_Man_t * p, Abc_Ntk_t * pNtk );
extern Vec_Ptr_t * Rwr_ManReadFanins( Rwr_Man_t * p );
extern Vec_Int_t * Rwr_ManReadDecs( Rwr_Man_t * p );
/*=== rwrPrint.c ========================================================*/
extern void Rwr_ManPrint( Rwr_Man_t * p );
/*=== rwrUtil.c ========================================================*/
extern void Rwr_ManWriteToArray( Rwr_Man_t * p );
extern void Rwr_ManLoadFromArray( Rwr_Man_t * p );
extern void Rwr_ManWriteToFile( Rwr_Man_t * p, char * pFileName );
extern void Rwr_ManLoadFromFile( Rwr_Man_t * p, char * pFileName );
extern Vec_Int_t * Rwt_NtkFanoutCounters( Abc_Ntk_t * pNtk );
extern void Rwr_ListAddToTail( Rwr_Node_t ** ppList, Rwr_Node_t * pNode );
extern char * Rwr_ManGetPractical( Rwr_Man_t * p );
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
#endif
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