BackwardIntersectionBitVectorAnalysis.cpp

/*******************************************************************************
 * Copyright IBM Corp. and others 2000
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
 * distribution and is available at https://www.eclipse.org/legal/epl-2.0/
 * or the Apache License, Version 2.0 which accompanies this distribution
 * and is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License, v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception [1] and GNU General Public
 * License, version 2 with the OpenJDK Assembly Exception [2].
 *
 * [1] https://www.gnu.org/software/classpath/license.html
 * [2] https://openjdk.org/legal/assembly-exception.html
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
 *******************************************************************************/

#include <stddef.h>
#include <stdint.h>
#include "optimizer/DataFlowAnalysis.hpp"

class TR_BitVector;

// This file defines the methods in class BackwardIntersectionBitVectorAnalysis.
//
//
template<class Container>void TR_BackwardIntersectionDFSetAnalysis<Container *>::compose(Container *firstBitVector, Container *secondBitVector)
   {
   *firstBitVector &= *secondBitVector;
   }


template<class Container>void TR_BackwardIntersectionDFSetAnalysis<Container *>::inverseCompose(Container *firstBitVector, Container *secondBitVector)
   {
   *firstBitVector |= *secondBitVector;
   }


template<class Container>void TR_BackwardIntersectionDFSetAnalysis<Container *>::initializeCurrentGenKillSetInfo()
   {
   }


template<class Container>void TR_BackwardIntersectionDFSetAnalysis<Container *>::initializeOutSetInfo()
   {
   int32_t i;
   for (i=0;i<this->_numberOfNodes;i++)
      this->_currentOutSetInfo[i]->setAll(this->_numberOfBits);
   }


template<class Container>Container *TR_BackwardIntersectionDFSetAnalysis<Container *>::initializeInfo(Container *info)
   {
   Container *result = info;
   if (result == NULL)
#if FLEX_USE_INVERTED_BIT_VECTORS
   this->allocateContainer(&result, true);
#else
   this->allocateContainer(&result, false);
#endif
   result->setAll(this->_numberOfBits);
   return result;
   }

template<class Container>Container * TR_BackwardIntersectionDFSetAnalysis<Container *>::inverseInitializeInfo(Container *info)
   {
   Container *result = info;
   if (result == NULL)
      this->allocateContainer(&result, true);
   else
      result->empty();
   return result;
   }


template<class Container>TR_DataFlowAnalysis::Kind TR_BackwardIntersectionDFSetAnalysis<Container *>::getKind()
   {
   return TR_DataFlowAnalysis::BackwardIntersectionDFSetAnalysis;
   }

template class TR_BackwardIntersectionDFSetAnalysis<TR_BitVector *>;