Mercurial > hg > truffle
view graal/GraalCompiler/src/com/sun/c1x/ir/LookupSwitch.java @ 2827:bd17ac598c6e
Graph cloning, initial version (not completely working)
author | Lukas Stadler <lukas.stadler@jku.at> |
---|---|
date | Mon, 30 May 2011 18:46:57 +0200 |
parents | d3fc4fe063bf |
children | 14708c03abba |
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/* * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.c1x.ir; import static com.sun.c1x.debug.InstructionPrinter.InstructionLineColumn.*; import java.util.*; import com.oracle.graal.graph.*; import com.sun.c1x.debug.*; /** * The {@code LookupSwitch} instruction represents a lookup switch bytecode, which has a sorted * array of key values. */ public final class LookupSwitch extends Switch { private static final int INPUT_COUNT = 0; private static final int SUCCESSOR_COUNT = 0; final int[] keys; /** * Constructs a new LookupSwitch instruction. * @param value the instruction producing the value being switched on * @param successors the list of successors * @param keys the list of keys, sorted * @param stateAfter the state after the switch * @param graph */ public LookupSwitch(Value value, List<? extends Instruction> successors, int[] keys, Graph graph) { super(value, successors, INPUT_COUNT, SUCCESSOR_COUNT, graph); this.keys = keys; } /** * Gets the key at the specified index. * @param i the index * @return the key at that index */ public int keyAt(int i) { return keys[i]; } public int keysLength() { return keys.length; } @Override public void accept(ValueVisitor v) { v.visitLookupSwitch(this); } @Override public void print(LogStream out) { out.print("lookupswitch "); out.println(value()); int l = numberOfCases(); for (int i = 0; i < l; i++) { INSTRUCTION.advance(out); out.printf("case %5d: B%d%n", keyAt(i), blockSuccessors().get(i)); } INSTRUCTION.advance(out); out.print("default : ").print(defaultSuccessor()); } @Override public Node copy(Graph into) { LookupSwitch x = new LookupSwitch(null, Arrays.asList(new Instruction[numberOfCases() + 1]), keys.clone(), into); x.setNonNull(isNonNull()); return x; } }