| /* |
| * Copyright (c) 2012, 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 jdk.vm.ci.code; |
| |
| import jdk.vm.ci.meta.AllocatableValue; |
| import jdk.vm.ci.meta.JavaConstant; |
| import jdk.vm.ci.meta.JavaValue; |
| import jdk.vm.ci.meta.PlatformKind; |
| import jdk.vm.ci.meta.Value; |
| |
| /** |
| * Utility class for working with the {@link Value} class and its subclasses. |
| */ |
| public final class ValueUtil { |
| |
| public static boolean isIllegal(Value value) { |
| assert value != null; |
| return Value.ILLEGAL.equals(value); |
| } |
| |
| public static boolean isIllegalJavaValue(JavaValue value) { |
| assert value != null; |
| return Value.ILLEGAL.equals(value); |
| } |
| |
| public static boolean isLegal(Value value) { |
| return !isIllegal(value); |
| } |
| |
| public static boolean isVirtualObject(JavaValue value) { |
| assert value != null; |
| return value instanceof VirtualObject; |
| } |
| |
| public static VirtualObject asVirtualObject(JavaValue value) { |
| assert value != null; |
| return (VirtualObject) value; |
| } |
| |
| public static boolean isConstantJavaValue(JavaValue value) { |
| assert value != null; |
| return value instanceof JavaConstant; |
| } |
| |
| public static JavaConstant asConstantJavaValue(JavaValue value) { |
| assert value != null; |
| return (JavaConstant) value; |
| } |
| |
| public static boolean isAllocatableValue(Value value) { |
| assert value != null; |
| return value instanceof AllocatableValue; |
| } |
| |
| public static AllocatableValue asAllocatableValue(Value value) { |
| assert value != null; |
| return (AllocatableValue) value; |
| } |
| |
| public static boolean isStackSlot(Value value) { |
| assert value != null; |
| return value instanceof StackSlot; |
| } |
| |
| public static StackSlot asStackSlot(Value value) { |
| assert value != null; |
| return (StackSlot) value; |
| } |
| |
| public static boolean isRegister(Value value) { |
| assert value != null; |
| return value instanceof RegisterValue; |
| } |
| |
| public static Register asRegister(Value value) { |
| return asRegisterValue(value).getRegister(); |
| } |
| |
| public static RegisterValue asRegisterValue(Value value) { |
| assert value != null; |
| return (RegisterValue) value; |
| } |
| |
| public static Register asRegister(Value value, PlatformKind kind) { |
| if (value.getPlatformKind() != kind) { |
| throw new InternalError("needed: " + kind + " got: " + value.getPlatformKind()); |
| } else { |
| return asRegister(value); |
| } |
| } |
| } |