CFGConstructionPass.cpp

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/* src/vm/jit/compiler2/CFGConstructionPass.cpp - CFGConstructionPass

   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.

*/

#include "vm/jit/compiler2/CFGConstructionPass.hpp"
#include "vm/jit/compiler2/JITData.hpp"
#include "vm/jit/compiler2/PassManager.hpp"
#include "vm/jit/compiler2/PassUsage.hpp"
#include "vm/jit/compiler2/VerifierPass.hpp"
#include "vm/jit/compiler2/StackAnalysisPass.hpp"
#include "vm/jit/cfg.hpp"

namespace cacao {
namespace jit {
namespace compiler2 {

bool CFGConstructionPass::run(JITData &JD) {
    /* Build the CFG.  This has to be done after stack_analyse, as
       there happens the JSR elimination. */
    if (!cfg_build(JD.get_jitdata())) {
        return false;
    }
    return true;
}

PassUsage& CFGConstructionPass::get_PassUsage(PassUsage &PU) const {
    #if ENABLE_VERIFIER
    PU.add_requires<VerifierPass>();
    #else
    PU.add_requires<StackAnalysisPass>();
    #endif
    return PU;
}

// the address of this variable is used to identify the pass
char CFGConstructionPass::ID = 0;

// registrate Pass
static PassRegistry<CFGConstructionPass> X("CFGConstructionPass");

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


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