BFRescheduleResultsClose.cc

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/*
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/**
 * @file BFScheduleResultsClose.cc
 *
 * Definition of BFScheduleResultsClose class.
 *
 * (After scheduling a trigger of operation,) try to reschedule it's results
 * closer to operands into more optimal position. Calls BFScheduleResultClose
 * for each result move.
 *
 * @author Heikki Kultala 2014-2020(heikki.kultala-no.spam-tuni.fi)
 * @note rating: red
 */
 
#include "BFRescheduleResultsClose.hh"
#include "BFRescheduleResultClose.hh"
 
#include "ProgramOperation.hh"
 
bool BFRescheduleResultsClose::operator()() {
 
    int lastNonReg = 0;
    bool rescheduled = false;
    for (int i= 0; i < po_.outputMoveCount(); i++) {
        MoveNode& mn = po_.outputMove(i);
        if (!mn.isScheduled()) {
//            std::cerr << "res not scheduled!" << std::endl;
            continue;
        }
        if (!mn.isDestinationVariable()) {
            lastNonReg = std::min(lastNonReg, mn.cycle());
        }
    }
 
    for (int i= 0; i < po_.outputMoveCount(); i++) {
        MoveNode& mn = po_.outputMove(i);
        if (!mn.isScheduled()) {
            continue;
        }
        if (mn.isDestinationVariable() && mn.cycle() > lastNonReg) {
            BFRescheduleResultClose* resched =
                new BFRescheduleResultClose(sched_, mn, lastNonReg);
            rescheduled |= runPreChild(resched);
        }
    }
    return rescheduled;
}