GlobalSchedule.hpp

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/* src/vm/jit/compiler2/GlobalSchedule.hpp - GlobalSchedule

   Copyright (C) 2013
   CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO

   This file is part of CACAO.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License as
   published by the Free Software Foundation; either version 2, or (at
   your option) any later version.

   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301, USA.

*/

#ifndef _JIT_COMPILER2_GLOBALSCHEDULE
#define _JIT_COMPILER2_GLOBALSCHEDULE

#include "vm/jit/compiler2/Instruction.hpp"
#include "vm/jit/compiler2/MethodC2.hpp"
#include "vm/jit/compiler2/alloc/unordered_set.hpp"
#include "vm/jit/compiler2/alloc/unordered_map.hpp"

namespace cacao {
namespace jit {
namespace compiler2 {


/**
 * GlobalSchedule
 * TODO: more info
 */
class GlobalSchedule {
public:
    typedef alloc::unordered_set<Instruction*>::type::const_iterator const_inst_iterator;
protected:
    alloc::unordered_map<const Instruction*, BeginInst*>::type map;
    alloc::unordered_map<const BeginInst*, alloc::unordered_set<Instruction*>::type >::type bb_map;
    void set_schedule(const Method* M) {
        map.clear();
        for (Method::InstructionListTy::const_iterator i = M->begin(),
                e = M->end() ; i != e ; ++i) {
            Instruction *I = *i;
            BeginInst *BI= I->get_BeginInst();
            if (BI) {
                map[I] = BI;
                bb_map[BI].insert(I);
            }
        }
    }
public:
    GlobalSchedule() {}
    void add_Instruction(Instruction *I, BeginInst* BI) {
        map[I] = BI;
        bb_map[BI].insert(I);
    }

    BeginInst* operator[](const Instruction* I) const {
        return get(I);
    }
    BeginInst* get(const Instruction* I) const {
        alloc::unordered_map<const Instruction*, BeginInst*>::type::const_iterator i = map.find(I);
        if (i == map.end()) {
            return NULL;
        }
        return i->second;
    }
    const_inst_iterator inst_begin(const BeginInst* BI) const {
        alloc::unordered_map<const BeginInst*, alloc::unordered_set<Instruction*>::type >::type::const_iterator i = bb_map.find(BI);
        assert(i != bb_map.end());
        return i->second.begin();
    }
    const_inst_iterator inst_end(const BeginInst* BI) const {
        alloc::unordered_map<const BeginInst*, alloc::unordered_set<Instruction*>::type >::type::const_iterator i = bb_map.find(BI);
        assert(i != bb_map.end());
        return i->second.end();
    }
};

} // end namespace compiler2
} // end namespace jit
} // end namespace cacao

#endif /* _JIT_COMPILER2_GLOBALSCHEDULE */


/*
 * These are local overrides for various environment variables in Emacs.
 * Please do not remove this and leave it at the end of the file, where
 * Emacs will automagically detect them.
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 * Local variables:
 * mode: c++
 * indent-tabs-mode: t
 * c-basic-offset: 4
 * tab-width: 4
 * End:
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