DDGPass.cc

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/*
    Copyright (c) 2002-2009 Tampere University.
 
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/**
 * 
 * @file DDGPass.cc
 * 
 * Definition of a DDGPass class.
 *
 * @author Heikki Kultala 2007 (hkultala-no.spam-cs.tut.fi)
 * @note rating: red
 */
 
#include "DDGPass.hh"
#include "DataDependenceGraph.hh"
#include "Machine.hh"
#include "SimpleResourceManager.hh"
 
/**
 * Constructor.
 */
DDGPass::DDGPass(InterPassData& data) :
    SchedulerPass(data) {
}
 
/**
 * Destructor.
 */
DDGPass::~DDGPass() {
}
 
/**
 * Handles a given DDG.
 *
 * @param ddg DDG to handle
 * @param rm Resource manager that is to be used.
 * @param machine The target machine if any. (NullMachine::instance() if
 * target machine is irrelevant).
 * @exception In case handling is unsuccesful for any reason (basicBlock
 * might still get modified).
 */
int
DDGPass::handleDDG(
    DataDependenceGraph& ddg, SimpleResourceManager& rm,
    const TTAMachine::Machine& targetMachine, int minCycle, bool /*testOnly*/) {
    // just to avoid warnings -- need to keep the argument names for
    // Doxygen comments ;)
    ddg.nodeCount();
    rm.largestCycle();
    targetMachine.machineTester();
    abortWithError("Should never call this.");
    minCycle++;
    return INT_MAX;
}
 
int
DDGPass::handleLoopDDG(
    DataDependenceGraph&, SimpleResourceManager&, const TTAMachine::Machine&,
    int, SimpleResourceManager*, bool) {
    return -1;
}