J9Instruction.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
 *******************************************************************************/

#if defined(J9ZOS390)
//On zOS XLC linker can't handle files with same name at link time
//This workaround with pragma is needed. What this does is essentially
//give a different name to the codesection (csect) for this file. So it
//doesn't conflict with another file with same name.
#pragma csect(CODE,"TRJ9InstBase#C")
#pragma csect(STATIC,"TRJ9InstBase#S")
#pragma csect(TEST,"TRJ9InstBase#T")
#endif

#include "codegen/Instruction.hpp"
#include "codegen/CodeGenerator.hpp"
#include "il/Node.hpp"
#include "il/Node_inlines.hpp"

J9::Instruction::Instruction(
      TR::CodeGenerator *cg,
      TR::InstOpCode::Mnemonic op,
      TR::Node *node) :
   OMR::InstructionConnector(cg, op, node)
   {
   if (self()->getPrev())
      {
      _liveLocals = cg->getLiveLocals();
      _liveMonitors = cg->getLiveMonitors();
      }
   else
      {
      _liveLocals = 0;
      _liveMonitors = 0;
      }
   }


J9::Instruction::Instruction(
      TR::CodeGenerator *cg,
      TR::Instruction *precedingInstruction,
      TR::InstOpCode::Mnemonic op,
      TR::Node *node) :
   OMR::InstructionConnector(cg, precedingInstruction, op, node)
   {
   if (precedingInstruction != 0)
      {
      _liveLocals = precedingInstruction->_liveLocals;
      _liveMonitors = precedingInstruction->_liveMonitors;
      }
   else
      {
      _liveLocals = 0;
      _liveMonitors = 0;
      }
   }