| /* |
| * Copyright (c) 2011, 2016, 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.nodes.memory; |
| |
| import org.graalvm.compiler.core.common.LocationIdentity; |
| import org.graalvm.compiler.graph.Node; |
| import org.graalvm.compiler.nodes.FixedNode; |
| import org.graalvm.compiler.nodes.FixedNodeInterface; |
| |
| /** |
| * This interface marks subclasses of {@link FixedNode} that kill a set of memory locations |
| * represented by location identities (i.e. change a value at one or more locations that belong to |
| * these location identities). |
| */ |
| public interface MemoryCheckpoint extends MemoryNode, FixedNodeInterface { |
| |
| interface Single extends MemoryCheckpoint { |
| |
| /** |
| * This method is used to determine which memory location is killed by this node. Returning |
| * the special value {@link LocationIdentity#any()} will kill all memory locations. |
| * |
| * @return the identity of the location killed by this node. |
| */ |
| LocationIdentity getLocationIdentity(); |
| |
| } |
| |
| interface Multi extends MemoryCheckpoint { |
| |
| /** |
| * This method is used to determine which set of memory locations is killed by this node. |
| * Returning the special value {@link LocationIdentity#any()} will kill all memory |
| * locations. |
| * |
| * @return the identities of all locations killed by this node. |
| */ |
| LocationIdentity[] getLocationIdentities(); |
| |
| } |
| |
| class TypeAssertion { |
| |
| public static boolean correctType(Node node) { |
| return !(node instanceof MemoryCheckpoint) || (node instanceof MemoryCheckpoint.Single ^ node instanceof MemoryCheckpoint.Multi); |
| } |
| } |
| } |
