src/map/if/ifCore.c

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#include "if.h"


extern int s_MappingTime;


int If_ManPerformMapping( If_Man_t * p )
{
    p->pPars->fAreaOnly = p->pPars->fArea; // temporary

    // create the CI cutsets
    If_ManSetupCiCutSets( p );
    // allocate memory for other cutsets
    If_ManSetupSetAll( p, If_ManCrossCut(p) );

    // try sequential mapping
    if ( p->pPars->fSeqMap )
    {
        int RetValue;
//        printf( "Currently sequential mapping is not performed.\n" );
        RetValue = If_ManPerformMappingSeq( p );
        return RetValue;
//        return 1;
    }

    return If_ManPerformMappingComb( p );
}


int If_ManPerformMappingComb( If_Man_t * p )
{
    If_Obj_t * pObj;
    int clkTotal = clock();
    int i;

    // set arrival times and fanout estimates
    If_ManForEachCi( p, pObj, i )
    {
        If_ObjSetArrTime( pObj, p->pPars->pTimesArr[i] );
        pObj->EstRefs = (float)1.0;
    }

    // delay oriented mapping
    if ( p->pPars->fPreprocess && !p->pPars->fArea )
    {
        // map for delay
        If_ManPerformMappingRound( p, p->pPars->nCutsMax, 0, 1, "Delay" );
        // map for delay second option
        p->pPars->fFancy = 1;
        If_ManResetOriginalRefs( p );
        If_ManPerformMappingRound( p, p->pPars->nCutsMax, 0, 1, "Delay-2" );
        p->pPars->fFancy = 0;
        // map for area
        p->pPars->fArea = 1;
        If_ManResetOriginalRefs( p );
        If_ManPerformMappingRound( p, p->pPars->nCutsMax, 0, 1, "Area" );
        p->pPars->fArea = 0;
    }
    else
        If_ManPerformMappingRound( p, p->pPars->nCutsMax, 0, 0, "Delay" );

    // try to improve area by expanding and reducing the cuts
    if ( p->pPars->fExpRed && !p->pPars->fTruth )
        If_ManImproveMapping( p );

    // area flow oriented mapping
    for ( i = 0; i < p->pPars->nFlowIters; i++ )
    {
        If_ManPerformMappingRound( p, p->pPars->nCutsMax, 1, 0, "Flow" );
        if ( p->pPars->fExpRed && !p->pPars->fTruth )
            If_ManImproveMapping( p );
    }

    // area oriented mapping
    for ( i = 0; i < p->pPars->nAreaIters; i++ )
    {
        If_ManPerformMappingRound( p, p->pPars->nCutsMax, 2, 0, "Area" );
        if ( p->pPars->fExpRed && !p->pPars->fTruth )
            If_ManImproveMapping( p );
    }

    if ( p->pPars->fVerbose )
    {
//        printf( "Total memory = %7.2f Mb. Peak cut memory = %7.2f Mb.  ", 
//            1.0 * (p->nObjBytes + 2*sizeof(void *)) * If_ManObjNum(p) / (1<<20), 
//            1.0 * p->nSetBytes * Mem_FixedReadMaxEntriesUsed(p->pMemSet) / (1<<20) );
        PRT( "Total time", clock() - clkTotal );
    }
//    printf( "Cross cut memory = %d.\n", Mem_FixedReadMaxEntriesUsed(p->pMemSet) );
    s_MappingTime = clock() - clkTotal;
    return 1;
}

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