| /* |
| * Copyright (c) 2015, 2015, 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 org.graalvm.compiler.lir.util; |
| |
| import static org.graalvm.compiler.lir.LIRValueUtil.asVariable; |
| import static org.graalvm.compiler.lir.LIRValueUtil.asVirtualStackSlot; |
| import static org.graalvm.compiler.lir.LIRValueUtil.isVariable; |
| import static org.graalvm.compiler.lir.LIRValueUtil.isVirtualStackSlot; |
| |
| import org.graalvm.compiler.debug.GraalError; |
| |
| import jdk.vm.ci.meta.Value; |
| |
| public class VariableVirtualStackValueMap<K extends Value, T> extends ValueMap<K, T> { |
| |
| private final Object[] variables; |
| private final Object[] slots; |
| |
| public VariableVirtualStackValueMap(int initialVariableCapacity, int initialStackSlotCapacity) { |
| variables = new Object[initialVariableCapacity]; |
| slots = new Object[initialStackSlotCapacity]; |
| } |
| |
| @Override |
| public T get(K value) { |
| if (isVariable(value)) { |
| return get(variables, asVariable(value).index); |
| } |
| if (isVirtualStackSlot(value)) { |
| return get(slots, asVirtualStackSlot(value).getId()); |
| } |
| throw GraalError.shouldNotReachHere("Unsupported Value: " + value); |
| } |
| |
| @Override |
| public void remove(K value) { |
| if (isVariable(value)) { |
| remove(variables, asVariable(value).index); |
| } else if (isVirtualStackSlot(value)) { |
| remove(slots, asVirtualStackSlot(value).getId()); |
| } else { |
| throw GraalError.shouldNotReachHere("Unsupported Value: " + value); |
| } |
| } |
| |
| @Override |
| public void put(K value, T object) { |
| if (isVariable(value)) { |
| put(variables, asVariable(value).index, object); |
| } else if (isVirtualStackSlot(value)) { |
| put(slots, asVirtualStackSlot(value).getId(), object); |
| } else { |
| throw GraalError.shouldNotReachHere("Unsupported Value: " + value); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| private static <T> T get(Object[] array, int index) { |
| if (index >= array.length) { |
| return null; |
| } |
| return (T) array[index]; |
| } |
| |
| private static void remove(Object[] array, int index) { |
| if (index >= array.length) { |
| return; |
| } |
| array[index] = null; |
| } |
| |
| private static <T> Object[] put(Object[] array, int index, T object) { |
| if (index >= array.length) { |
| Object[] newArray = new Object[index + 1]; |
| System.arraycopy(array, 0, newArray, 0, array.length); |
| newArray[index] = object; |
| return newArray; |
| } |
| array[index] = object; |
| return null; |
| } |
| } |