FalseAliasAnalyzer.cc

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/*
    Copyright (c) 2002-2009 Tampere University.
 
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/**
 * @file FalseAliasAnalyzer.cc
 *
 * Implementation of FalseAliasAnalyzer class.
 * 
 * @author Heikki Kultala 2007 (heikki.kultala-no.spam-tut.fi)
 * @note rating: red
 */
 
#include "FalseAliasAnalyzer.hh"
#include "DataDependenceGraph.hh"
 
/**
 * Checks whether can say something about a memory address. 
 *
 * @return always returns true
 */
bool 
FalseAliasAnalyzer::isAddressTraceable(
    DataDependenceGraph& ddg, const ProgramOperation&) {
    return isEnabled(ddg) ?  true : false;
}
 
/**
 * checks whether mem adderesses alias. As this is fake, always returns false.
 * @return always ALIAS_FALSE
 */
MemoryAliasAnalyzer::AliasingResult
FalseAliasAnalyzer::analyze(
    DataDependenceGraph& ddg, const ProgramOperation&, const ProgramOperation&, MoveNodeUse::BBRelation) {
    return isEnabled(ddg) ? ALIAS_FALSE : ALIAS_UNKNOWN;
}
 
/**
 * Desctructor
 */
FalseAliasAnalyzer::~FalseAliasAnalyzer() {}
 
bool FalseAliasAnalyzer::isEnabled(const DataDependenceGraph& ddg) const {
    if (funcs_ == NULL) {
        return true;
    }
    return AssocTools::containsKey(*funcs_, ddg.name());
}