J9Peephole.cpp

/*******************************************************************************
 * Copyright IBM Corp. and others 2020
 *
 * 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
 *******************************************************************************/

#pragma csect(CODE,"TRJ9PeepholeBase#C")
#pragma csect(STATIC,"TRJ9PeepholeBase#S")
#pragma csect(TEST,"TRJ9PeepholeBase#T")

#include "codegen/Peephole.hpp"

#include "codegen/CodeGenerator.hpp"
#include "codegen/Instruction.hpp"
#include "codegen/S390GenerateInstructions.hpp"
#include "codegen/S390Instruction.hpp"

J9::Z::Peephole::Peephole(TR::Compilation* comp) :
   OMR::PeepholeConnector(comp)
   {}

bool
J9::Z::Peephole::performOnInstruction(TR::Instruction* cursor)
   {
   bool performed = false;

   if (self()->cg()->afterRA())
      {
      if (cursor->getNode() != NULL && cursor->getNode()->getOpCodeValue() == TR::BBStart)
         {
         self()->comp()->setCurrentBlock(cursor->getNode()->getBlock());
         }
      }

   performed |= OMR::PeepholeConnector::performOnInstruction(cursor);

   return performed;
   }