LiveRangeData.hh

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/*
    Copyright (c) 2002-2011 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
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    the rights to use, copy, modify, merge, publish, distribute, sublicense,
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    Software is furnished to do so, subject to the following conditions:
 
    The above copyright notice and this permission notice shall be included in
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    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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/** 
 * @file LiveRangeData.hh
 *
 * Declaration of LiveRangeData class.
 *
 * Contains live range-related data for one basic block.
 * This is generated and used by ddg builder.
 * This may also be used by later parts of the scheduler.
 *
 * @author Heikki Kultala 2011 (hkultala@cs.tut.fi)
 * @note rating: red
 */
 
#ifndef TTA_LIVERANGE_DATA_HH
#define TTA_LIVERANGE_DATA_HH
 
#include "MoveNodeUse.hh"
#include "TCEString.hh"
 
#include <set>
#include <map>
 
struct LiveRangeData {
    std::set<TCEString> registersAlive(
        int cycle, int delaySlots, class DataDependenceGraph& ddg);
 
    typedef std::set<MoveNodeUse > MoveNodeUseSet;
    typedef std::map<TCEString, MoveNodeUseSet > MoveNodeUseMapSet;
    typedef std::map<TCEString, MoveNodeUse > MoveNodeUseMap;
    typedef std::map<TCEString, std::pair<MoveNodeUse, MoveNodeUse> > 
    MoveNodeUseMapPair;
 
    typedef std::pair<TCEString, MoveNodeUseSet > MoveNodeUseSetPair;
    typedef std::pair<TCEString, MoveNodeUse> MoveNodeUsePair;
 
    const std::set<TCEString>& usedAfter() {
        return registersUsedAfter_;
    }
 
    // merges liverangedata of successor into this.
    void merge(LiveRangeData& succ);
 
    static bool appendUseMapSets(
        const MoveNodeUseMapSet& srcMap, 
        MoveNodeUseMapSet& dstMap,
        bool addLoopProperty);
 
    static void appendMoveNodeUse(
        const MoveNodeUseSet& src, 
        MoveNodeUseSet& dst,
        bool setLoopProperty);
 
    // dependencies out from this BB
    MoveNodeUseMapSet regDefines_;
    MoveNodeUseMapSet regLastUses_;
    MoveNodeUseMapPair regLastKills_;
    
    std::map<TCEString, std::pair<MoveNodeUse, bool> >potentialRegKills_;
 
    // dependencies in to this BB
    MoveNodeUseMapPair regKills_;
    MoveNodeUseMapSet regFirstUses_;
    MoveNodeUseMapSet regFirstDefines_;
    
    // dependencies from previous BBs.
    MoveNodeUseMapSet regDefReaches_;
    MoveNodeUseMapSet regUseReaches_;
    
    // all alive after this BB.
    MoveNodeUseMapSet regDefAfter_;
    MoveNodeUseMapSet regUseAfter_;
    
    // dependencies out from this BB
    MoveNodeUseMapSet memDefines_;
    MoveNodeUseMapSet memLastUses_;
    MoveNodeUseMap memLastKill_;
    
    // dependencies into this one
    MoveNodeUseMap memKills_;
    MoveNodeUseMapSet memFirstUses_;
    MoveNodeUseMapSet memFirstDefines_;
    
    // deps from previous BBs
    MoveNodeUseMapSet memDefReaches_;
    MoveNodeUseMapSet memUseReaches_;
    
    // all alive after this
    MoveNodeUseMapSet memDefAfter_;
    MoveNodeUseMapSet memUseAfter_;
    
    // fu state deps
    MoveNodeUseSet fuDepReaches_;
    MoveNodeUseSet fuDeps_;
    MoveNodeUseSet fuDepAfter_;
    
    // live range information
    std::set<TCEString> registersUsedAfter_;
    std::set<TCEString> registersUsedInOrAfter_;
 
    // Liverange data, initialized from INLINEASM llvm instruction node,
    // passed to DDG Builder.
    std::set<TCEString> inlineAsmRegUses_;
    std::set<TCEString> inlineAsmRegDefs_;
    std::set<TCEString> inlineAsmClobbers_;
};
 
#endif