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.ir;
014    
015    import static org.jikesrvm.compilers.opt.ir.Operators.BOUNDS_CHECK;
016    
017    import java.util.Enumeration;
018    
019    /**
020     * General utilities to summarize an IR
021     */
022    public final class IRSummary {
023    
024      /**
025       * Does this IR have a bounds check expression?
026       */
027      public static boolean hasBoundsCheck(IR ir) {
028        for (Enumeration<Instruction> e = ir.forwardInstrEnumerator(); e.hasMoreElements();) {
029          Instruction s = e.nextElement();
030          if (s.operator == BOUNDS_CHECK) {
031            return true;
032          }
033        }
034        return false;
035      }
036    }
037    
038    
039