| /* |
| * Copyright (c) 2014, 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; |
| |
| import jdk.vm.ci.code.StackSlot; |
| import jdk.vm.ci.meta.AllocatableValue; |
| import jdk.vm.ci.meta.ValueKind; |
| |
| /** |
| * {@link VirtualStackSlot}s are stack slots that are not yet fixed to specific frame offset. They |
| * are replaced by real {@link StackSlot}s with a fixed position in the frame before code emission. |
| */ |
| public abstract class VirtualStackSlot extends AllocatableValue { |
| |
| private final int id; |
| |
| public VirtualStackSlot(int id, ValueKind<?> kind) { |
| super(kind); |
| this.id = id; |
| } |
| |
| public int getId() { |
| return id; |
| } |
| |
| @Override |
| public String toString() { |
| return "vstack:" + id + getKindSuffix(); |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = super.hashCode(); |
| result = prime * result + id; |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (!super.equals(obj)) { |
| return false; |
| } |
| if (getClass() != obj.getClass()) { |
| return false; |
| } |
| VirtualStackSlot other = (VirtualStackSlot) obj; |
| if (id != other.id) { |
| return false; |
| } |
| return true; |
| } |
| |
| } |