001    /*
002     *  This file is part of the Jikes RVM project (http://jikesrvm.org).
003     *
004     *  This file is licensed to You under the Eclipse Public License (EPL);
005     *  You may not use this file except in compliance with the License. You
006     *  may obtain a copy of the License at
007     *
008     *      http://www.opensource.org/licenses/eclipse-1.0.php
009     *
010     *  See the COPYRIGHT.txt file distributed with this work for information
011     *  regarding copyright ownership.
012     */
013    package org.jikesrvm.compilers.opt.regalloc;
014    
015    import org.jikesrvm.compilers.opt.driver.CompilerPhase;
016    import org.jikesrvm.compilers.opt.ir.IR;
017    
018    /**
019     * This class is a phase that inserts prologues and epilogues
020     */
021    public final class PrologueEpilogueCreator extends CompilerPhase {
022    
023      /**
024       * Return this instance of this phase. This phase contains no
025       * per-compilation instance fields.
026       * @param ir not used
027       * @return this
028       */
029      public CompilerPhase newExecution(IR ir) {
030        return this;
031      }
032    
033      public String getName() { return "Insert Prologue/Epilogue"; }
034    
035      /**
036       *  Insert the prologue and epilogue
037       */
038      public void perform(IR ir) {
039        ir.stackManager.insertPrologueAndEpilogue();
040      }
041    }