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/**CFile****************************************************************
FileName [mapperInt.h]
PackageName [MVSIS 2.0: Multi-valued logic synthesis system.]
Synopsis [Generic technology mapping engine.]
Author [MVSIS Group]
Affiliation [UC Berkeley]
Date [Ver. 2.0. Started - June 1, 2004.]
Revision [$Id: mapperInt.h,v 1.8 2004/09/30 21:18:10 satrajit Exp $]
***********************************************************************/
#ifndef ABC__map__mapper__mapperInt_h
#define ABC__map__mapper__mapperInt_h
////////////////////////////////////////////////////////////////////////
/// INCLUDES ///
////////////////////////////////////////////////////////////////////////
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <float.h>
#include <math.h>
#include "base/main/main.h"
#include "map/mio/mio.h"
#include "mapper.h"
ABC_NAMESPACE_HEADER_START
////////////////////////////////////////////////////////////////////////
/// PARAMETERS ///
////////////////////////////////////////////////////////////////////////
// uncomment to have fanouts represented in the mapping graph
//#define MAP_ALLOCATE_FANOUT 1
////////////////////////////////////////////////////////////////////////
/// MACRO DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
// the bit masks
#define MAP_MASK(n) ((~((unsigned)0)) >> (32-(n)))
#define MAP_FULL (~((unsigned)0))
#define MAP_NO_VAR (-9999.0)
// maximum/minimum operators
#define MAP_MIN(a,b) (((a) < (b))? (a) : (b))
#define MAP_MAX(a,b) (((a) > (b))? (a) : (b))
// the small and large numbers (min/max float are 1.17e-38/3.40e+38)
#define MAP_FLOAT_LARGE ((float)(FLT_MAX/10))
#define MAP_FLOAT_SMALL ((float)1.0e-03)
// generating random unsigned (#define RAND_MAX 0x7fff)
#define MAP_RANDOM_UNSIGNED ((((unsigned)rand()) << 24) ^ (((unsigned)rand()) << 12) ^ ((unsigned)rand()))
// internal macros to work with cuts
#define Map_CutIsComplement(p) (((int)((ABC_PTRUINT_T) (p) & 01)))
#define Map_CutRegular(p) ((Map_Cut_t *)((ABC_PTRUINT_T)(p) & ~01))
#define Map_CutNot(p) ((Map_Cut_t *)((ABC_PTRUINT_T)(p) ^ 01))
#define Map_CutNotCond(p,c) ((Map_Cut_t *)((ABC_PTRUINT_T)(p) ^ (c)))
// internal macros for referencing of nodes
#define Map_NodeReadRef(p) ((Map_Regular(p))->nRefs)
#define Map_NodeRef(p) ((Map_Regular(p))->nRefs++)
// macros to get hold of the bits in the support info
#define Map_InfoSetVar(p,i) (p[(i)>>5] |= (1<<((i) & 31)))
#define Map_InfoRemVar(p,i) (p[(i)>>5] &= ~(1<<((i) & 31)))
#define Map_InfoFlipVar(p,i) (p[(i)>>5] ^= (1<<((i) & 31)))
#define Map_InfoReadVar(p,i) ((p[(i)>>5] & (1<<((i) & 31))) > 0)
// returns the complemented attribute of the node
#define Map_NodeIsSimComplement(p) (Map_IsComplement(p)? !(Map_Regular(p)->fInv) : (p)->fInv)
////////////////////////////////////////////////////////////////////////
/// STRUCTURE DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
// the mapping manager
struct Map_ManStruct_t_
{
// the mapping graph
Map_Node_t ** pBins; // the table of nodes hashed by their children
int nBins; // the size of the table
Map_Node_t ** pInputs; // the array of inputs
int nInputs; // the number of inputs
Map_Node_t ** pOutputs; // the array of outputs
int nOutputs; // the number of outputs
int nNodes; // the total number of nodes
Map_Node_t * pConst1; // the constant 1 node
Map_NodeVec_t * vMapObjs; // the array of all nodes
Map_NodeVec_t * vMapBufs; // the array of all nodes
float * pNodeDelays; // the array of node delays
// info about the original circuit
char ** ppOutputNames; // the primary output names
Map_Time_t * pInputArrivals;// the PI arrival times
Map_Time_t * pOutputRequireds;// the PI arrival times
// mapping parameters
int nVarsMax; // the max number of variables
int fAreaRecovery; // the flag to enable area recovery
int fVerbose; // the verbosiness flag
int fMappingMode; // set to 1 when doing area
float fRequiredGlo; // the global required times
float fEpsilon; // the epsilon used to compare floats
float AreaBase; // the area after delay-oriented mapping
float AreaFinal; // the area after delay-oriented mapping
int nIterations; // How many matching passes to do
int fObeyFanoutLimits;// Should mapper try to obey fanout limits or not
float DelayTarget; // the required times set by the user
int nTravIds; // the traversal counter
int fSwitching; // use switching activity
int fSkipFanout; // skip large gates when mapping high-fanout nodes
int fUseProfile; // use standard-cell profile
// the supergate library
Map_SuperLib_t * pSuperLib; // the current supergate library
unsigned uTruths[6][2]; // the elementary truth tables
unsigned uTruthsLarge[10][32]; // the elementary truth tables
int nCounts[32]; // the counter of minterms
int nCountsBest[32];// the counter of minterms
Map_NodeVec_t * vVisited; // the visited cuts during cut computation
// the memory managers
Extra_MmFixed_t * mmNodes; // the memory manager for nodes
Extra_MmFixed_t * mmCuts; // the memory manager for cuts
// precomputed N-canonical forms
unsigned short * uCanons; // N-canonical forms
char ** uPhases; // N-canonical phases
char * pCounters; // counters of phases
// various statistical variables
int nChoiceNodes; // the number of choice nodes
int nChoices; // the number of all choices
int nCanons; // the number of times N-canonical form was computed
int nMatches; // the number of times supergate matching was performed
int nPhases; // the number of phases considered during matching
int nFanoutViolations; // the number of nodes in mapped circuit violating fanout
// runtime statistics
abctime timeToMap; // time to transfer to the mapping structure
abctime timeCuts; // time to compute k-feasible cuts
abctime timeTruth; // time to compute the truth table for each cut
abctime timeMatch; // time to perform matching for each node
abctime timeArea; // time to recover area after delay oriented mapping
abctime timeSweep; // time to perform technology dependent sweep
abctime timeToNet; // time to transfer back to the network
abctime timeTotal; // the total mapping time
abctime time1; // time to transfer to the mapping structure
abctime time2; // time to transfer to the mapping structure
abctime time3; // time to transfer to the mapping structure
};
// the supergate library
struct Map_SuperLibStruct_t_
{
// general info
char * pName; // the name of the supergate library
Mio_Library_t * pGenlib; // the generic library
// other info
int nVarsMax; // the max number of variables
int nSupersAll; // the total number of supergates
int nSupersReal; // the total number of supergates
int nLines; // the total number of lines in the supergate file
int fVerbose; // the verbosity flag
// hash tables
Map_Super_t ** ppSupers; // the array of supergates
Map_HashTable_t * tTableC; // the table mapping N-canonical forms into supergates
Map_HashTable_t * tTable; // the table mapping truth tables into supergates
// data structures for N-canonical form computation
unsigned uTruths[6][2]; // the elementary truth tables
unsigned uMask[2]; // the mask for the truth table
// the invertor
Mio_Gate_t * pGateInv; // the pointer to the intertor gate
Map_Time_t tDelayInv; // the delay of the inverter
float AreaInv; // the area of the inverter
float AreaBuf; // the area of the buffer
Map_Super_t * pSuperInv; // the supergate representing the inverter
// the memory manager for the internal table
Extra_MmFixed_t * mmSupers; // the mamory manager for supergates
Extra_MmFixed_t * mmEntries; // the memory manager for the entries
Extra_MmFlex_t * mmForms; // the memory manager for formulas
};
// the mapping node
struct Map_NodeStruct_t_
{
// general information about the node
Map_Man_t * p; // the mapping manager
Map_Node_t * pNext; // the next node in the hash table
int Num; // the unique number of this node
int TravId; // the traversal ID (use to avoid cleaning marks)
int nRefs; // the number of references (fanouts) of the given node
unsigned fMark0 : 1; // the mark used for traversals
unsigned fMark1 : 1; // the mark used for traversals
unsigned fUsed : 1; // the mark to mark the node or its fanins
unsigned fInv : 1; // the complemented attribute for the equivalent nodes
unsigned fInvert: 1; // the flag to denote the use of interter
unsigned Level :16; // the level of the given node
unsigned NumTemp:10; // the level of the given node
int nRefAct[3]; // estimated fanout for current covering phase, neg and pos and sum
float nRefEst[3]; // actual fanout for previous covering phase, neg and pos and sum
float Switching; // the probability of switching
// connectivity
Map_Node_t * p1; // the first child
Map_Node_t * p2; // the second child
Map_Node_t * pNextE; // the next functionally equivalent node
Map_Node_t * pRepr; // the representative of the functionally equivalent class
#ifdef MAP_ALLOCATE_FANOUT
// representation of node's fanouts
Map_Node_t * pFanPivot; // the first fanout of this node
Map_Node_t * pFanFanin1; // the next fanout of p1
Map_Node_t * pFanFanin2; // the next fanout of p2
// Map_NodeVec_t * vFanouts; // the array of fanouts of the gate
#endif
// the delay information
Map_Time_t tArrival[2]; // the best arrival time of the neg (0) and pos (1) phases
Map_Time_t tRequired[2]; // the required time of the neg (0) and pos (1) phases
// misc information
Map_Cut_t * pCutBest[2]; // the best mapping for neg and pos phase
Map_Cut_t * pCuts; // mapping choices for the node (elementary comes first)
char * pData0; // temporary storage for the corresponding network node
char * pData1; // temporary storage for the corresponding network node
};
// the match of the cut
struct Map_MatchStruct_t_
{
// information used for matching
Map_Super_t * pSupers;
unsigned uPhase;
// information about the best selected match
unsigned uPhaseBest; // the best phase (the EXOR of match's phase and gate's phase)
Map_Super_t * pSuperBest; // the best supergate matched
// the parameters of the match
Map_Time_t tArrive; // the arrival time of this match
float AreaFlow; // the area flow or area of this match
};
// the cuts used for matching
struct Map_CutStruct_t_
{
Map_Cut_t * pNext; // the pointer to the next cut in the list
Map_Cut_t * pOne; // the father of this cut
Map_Cut_t * pTwo; // the mother of this cut
Map_Node_t * ppLeaves[6]; // the leaves of this cut
unsigned uTruth; // truth table for five-input cuts
char nLeaves; // the number of leaves
char nVolume; // the volume of this cut
char fMark; // the mark to denote visited cut
char Phase; // the mark to denote complemented cut
Map_Match_t M[2]; // the matches for positive/negative phase
};
// the supergate internally represented
struct Map_SuperStruct_t_
{
int Num; // the ID of the supergate
unsigned fSuper : 1; // the flag to distinquish a real super from a fake one
unsigned fExclude: 1; // the flag if set causes gate to be excluded from being used for mapping
unsigned nFanins : 3; // the number of inputs
unsigned nGates : 3; // the number of gates inside this supergate
unsigned nFanLimit: 4; // the max number of fanout count
unsigned nSupers : 16; // the number of supergates in the list
unsigned nPhases : 4; // the number of phases for matching with canonical form
unsigned char uPhases[4]; // the maximum of 4 phases for matching with canonical form
int nUsed; // the number of times the supergate is used
Map_Super_t * pFanins[6]; // the fanins of the gate
Mio_Gate_t * pRoot; // the root gate
unsigned uTruth[2]; // the truth table
Map_Time_t tDelaysR[6]; // the pin-to-pin delay constraints for the rise of the output
Map_Time_t tDelaysF[6]; // the pin-to-pin delay constraints for the rise of the output
Map_Time_t tDelayMax; // the maximum delay
float Area; // the area
char * pFormula; // the symbolic formula
Map_Super_t * pNext; // the pointer to the next super in the list
};
// the vector of nodes
struct Map_NodeVecStruct_t_
{
Map_Node_t ** pArray; // the array of nodes
int nSize; // the number of entries in the array
int nCap; // the number of allocated entries
};
// the hash table
struct Map_HashTableStruct_t_
{
Map_HashEntry_t ** pBins; // the table bins
int nBins; // the size of the table
int nEntries; // the total number of entries in the table
Extra_MmFixed_t * mmMan; // the memory manager for entries
};
// the entry in the hash table
struct Map_HashEntryStruct_t_
{
unsigned uTruth[2]; // the truth table for 6-var function
unsigned uPhase; // the phase to tranform it into the canonical form
Map_Super_t * pGates; // the linked list of matching supergates
Map_HashEntry_t * pNext; // the next entry in the hash table
};
// getting hold of the next fanout of the node
#define Map_NodeReadNextFanout( pNode, pFanout ) \
( ( pFanout == NULL )? NULL : \
((Map_Regular((pFanout)->p1) == (pNode))? \
(pFanout)->pFanFanin1 : (pFanout)->pFanFanin2) )
// getting hold of the place where the next fanout will be attached
#define Map_NodeReadNextFanoutPlace( pNode, pFanout ) \
( (Map_Regular((pFanout)->p1) == (pNode))? \
&(pFanout)->pFanFanin1 : &(pFanout)->pFanFanin2 )
// iterator through the fanouts of the node
#define Map_NodeForEachFanout( pNode, pFanout ) \
for ( pFanout = (pNode)->pFanPivot; pFanout; \
pFanout = Map_NodeReadNextFanout(pNode, pFanout) )
// safe iterator through the fanouts of the node
#define Map_NodeForEachFanoutSafe( pNode, pFanout, pFanout2 ) \
for ( pFanout = (pNode)->pFanPivot, \
pFanout2 = Map_NodeReadNextFanout(pNode, pFanout); \
pFanout; \
pFanout = pFanout2, \
pFanout2 = Map_NodeReadNextFanout(pNode, pFanout) )
////////////////////////////////////////////////////////////////////////
/// GLOBAL VARIABLES ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/*=== mapperCanon.c =============================================================*/
/*=== mapperCut.c ===============================================================*/
extern void Map_MappingCuts( Map_Man_t * p );
/*=== mapperCutUtils.c ===============================================================*/
extern Map_Cut_t * Map_CutAlloc( Map_Man_t * p );
extern void Map_CutFree( Map_Man_t * p, Map_Cut_t * pCut );
extern void Map_CutPrint( Map_Man_t * p, Map_Node_t * pRoot, Map_Cut_t * pCut, int fPhase );
extern float Map_CutGetRootArea( Map_Cut_t * pCut, int fPhase );
extern int Map_CutGetLeafPhase( Map_Cut_t * pCut, int fPhase, int iLeaf );
extern int Map_NodeGetLeafPhase( Map_Node_t * pNode, int fPhase, int iLeaf );
extern Map_Cut_t * Map_CutListAppend( Map_Cut_t * pSetAll, Map_Cut_t * pSets );
extern void Map_CutListRecycle( Map_Man_t * p, Map_Cut_t * pSetList, Map_Cut_t * pSave );
extern int Map_CutListCount( Map_Cut_t * pSets );
extern void Map_CutRemoveFanouts( Map_Node_t * pNode, Map_Cut_t * pCut, int fPhase );
extern void Map_CutInsertFanouts( Map_Node_t * pNode, Map_Cut_t * pCut, int fPhase );
/*=== mapperFanout.c =============================================================*/
extern void Map_NodeAddFaninFanout( Map_Node_t * pFanin, Map_Node_t * pFanout );
extern void Map_NodeRemoveFaninFanout( Map_Node_t * pFanin, Map_Node_t * pFanoutToRemove );
extern int Map_NodeGetFanoutNum( Map_Node_t * pNode );
/*=== mapperLib.c ============================================================*/
extern Map_SuperLib_t * Map_SuperLibCreate( Mio_Library_t * pGenlib, Vec_Str_t * vStr, char * pFileName, char * pExcludeFile, int fAlgorithm, int fVerbose );
extern void Map_SuperLibFree( Map_SuperLib_t * p );
/*=== mapperMatch.c ===============================================================*/
extern int Map_MappingMatches( Map_Man_t * p );
/*=== mapperRefs.c =============================================================*/
extern void Map_MappingEstimateRefsInit( Map_Man_t * p );
extern void Map_MappingEstimateRefs( Map_Man_t * p );
extern float Map_CutGetAreaFlow( Map_Cut_t * pCut, int fPhase );
extern float Map_CutGetAreaRefed( Map_Cut_t * pCut, int fPhase );
extern float Map_CutGetAreaDerefed( Map_Cut_t * pCut, int fPhase );
extern float Map_CutRef( Map_Cut_t * pCut, int fPhase, int fProfile );
extern float Map_CutDeref( Map_Cut_t * pCut, int fPhase, int fProfile );
extern void Map_MappingSetRefs( Map_Man_t * pMan );
extern float Map_MappingGetArea( Map_Man_t * pMan );
/*=== mapperSwitch.c =============================================================*/
extern float Map_SwitchCutGetDerefed( Map_Node_t * pNode, Map_Cut_t * pCut, int fPhase );
extern float Map_SwitchCutRef( Map_Node_t * pNode, Map_Cut_t * pCut, int fPhase );
extern float Map_SwitchCutDeref( Map_Node_t * pNode, Map_Cut_t * pCut, int fPhase );
extern float Map_MappingGetSwitching( Map_Man_t * pMan );
/*=== mapperTree.c ===============================================================*/
extern int Map_LibraryDeriveGateInfo( Map_SuperLib_t * pLib, st__table * tExcludeGate );
extern int Map_LibraryReadFileTreeStr( Map_SuperLib_t * pLib, Mio_Library_t * pGenlib, Vec_Str_t * vStr, char * pFileName );
extern int Map_LibraryReadTree( Map_SuperLib_t * pLib, Mio_Library_t * pGenlib, char * pFileName, char * pExcludeFile );
extern void Map_LibraryPrintTree( Map_SuperLib_t * pLib );
/*=== mapperSuper.c ===============================================================*/
extern int Map_LibraryRead( Map_SuperLib_t * p, char * pFileName );
extern void Map_LibraryPrintSupergate( Map_Super_t * pGate );
/*=== mapperTable.c ============================================================*/
extern Map_HashTable_t * Map_SuperTableCreate( Map_SuperLib_t * pLib );
extern void Map_SuperTableFree( Map_HashTable_t * p );
extern int Map_SuperTableInsertC( Map_HashTable_t * pLib, unsigned uTruthC[], Map_Super_t * pGate );
extern int Map_SuperTableInsert( Map_HashTable_t * pLib, unsigned uTruth[], Map_Super_t * pGate, unsigned uPhase );
extern Map_Super_t * Map_SuperTableLookup( Map_HashTable_t * p, unsigned uTruth[], unsigned * puPhase );
extern void Map_SuperTableSortSupergates( Map_HashTable_t * p, int nSupersMax );
extern void Map_SuperTableSortSupergatesByDelay( Map_HashTable_t * p, int nSupersMax );
/*=== mapperTime.c =============================================================*/
extern float Map_TimeCutComputeArrival( Map_Node_t * pNode, Map_Cut_t * pCut, int fPhase, float tWorstCaseLimit );
extern float Map_TimeComputeArrivalMax( Map_Man_t * p );
extern void Map_TimeComputeRequiredGlobal( Map_Man_t * p );
/*=== mapperTruth.c ===============================================================*/
extern void Map_MappingTruths( Map_Man_t * pMan );
extern int Map_TruthsCutDontCare( Map_Man_t * pMan, Map_Cut_t * pCut, unsigned * uTruthDc );
extern int Map_TruthCountOnes( unsigned * uTruth, int nLeaves );
extern int Map_TruthDetectTwoFirst( unsigned * uTruth, int nLeaves );
/*=== mapperUtils.c ===============================================================*/
extern Map_NodeVec_t * Map_MappingDfs( Map_Man_t * pMan, int fCollectEquiv );
extern int Map_MappingCountLevels( Map_Man_t * pMan );
extern void Map_MappingUnmark( Map_Man_t * pMan );
extern void Map_MappingMark_rec( Map_Node_t * pNode );
extern void Map_MappingUnmark_rec( Map_Node_t * pNode );
extern void Map_MappingPrintOutputArrivals( Map_Man_t * p );
extern void Map_MappingSetupMask( unsigned uMask[], int nVarsMax );
extern int Map_MappingNodeIsViolator( Map_Node_t * pNode, Map_Cut_t * pCut, int fPosPol );
extern float Map_MappingGetAreaFlow( Map_Man_t * p );
extern void Map_MappingSortByLevel( Map_Man_t * pMan, Map_NodeVec_t * vNodes );
extern int Map_MappingCountDoubles( Map_Man_t * pMan, Map_NodeVec_t * vNodes );
extern void Map_MappingExpandTruth( unsigned uTruth[2], int nVars );
extern float Map_MappingPrintSwitching( Map_Man_t * pMan );
extern void Map_MappingSetPlacementInfo( Map_Man_t * p );
extern float Map_MappingPrintWirelength( Map_Man_t * p );
extern void Map_MappingWireReport( Map_Man_t * p );
extern float Map_MappingComputeDelayWithFanouts( Map_Man_t * p );
extern int Map_MappingGetMaxLevel( Map_Man_t * pMan );
extern void Map_MappingSetChoiceLevels( Map_Man_t * pMan );
extern void Map_MappingReportChoices( Map_Man_t * pMan );
/*=== mapperVec.c =============================================================*/
extern Map_NodeVec_t * Map_NodeVecAlloc( int nCap );
extern void Map_NodeVecFree( Map_NodeVec_t * p );
extern Map_NodeVec_t * Map_NodeVecDup( Map_NodeVec_t * p );
extern Map_Node_t ** Map_NodeVecReadArray( Map_NodeVec_t * p );
extern int Map_NodeVecReadSize( Map_NodeVec_t * p );
extern void Map_NodeVecGrow( Map_NodeVec_t * p, int nCapMin );
extern void Map_NodeVecShrink( Map_NodeVec_t * p, int nSizeNew );
extern void Map_NodeVecClear( Map_NodeVec_t * p );
extern void Map_NodeVecPush( Map_NodeVec_t * p, Map_Node_t * Entry );
extern int Map_NodeVecPushUnique( Map_NodeVec_t * p, Map_Node_t * Entry );
extern Map_Node_t * Map_NodeVecPop( Map_NodeVec_t * p );
extern void Map_NodeVecRemove( Map_NodeVec_t * p, Map_Node_t * Entry );
extern void Map_NodeVecWriteEntry( Map_NodeVec_t * p, int i, Map_Node_t * Entry );
extern Map_Node_t * Map_NodeVecReadEntry( Map_NodeVec_t * p, int i );
extern void Map_NodeVecSortByLevel( Map_NodeVec_t * p );
ABC_NAMESPACE_HEADER_END
#endif
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/// END OF FILE ///
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