ParameterNode.java revision 12657:6ef01bd40ce2 
1/*
2 * Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23package org.graalvm.compiler.nodes;
24
25import org.graalvm.compiler.core.common.type.Stamp;
26import org.graalvm.compiler.core.common.type.StampPair;
27import org.graalvm.compiler.graph.IterableNodeType;
28import org.graalvm.compiler.graph.NodeClass;
29import org.graalvm.compiler.nodeinfo.NodeInfo;
30import org.graalvm.compiler.nodes.spi.UncheckedInterfaceProvider;
31
32/**
33 * The {@code Parameter} instruction is a placeholder for an incoming argument to a function call.
34 */
35@NodeInfo(nameTemplate = "P({p#index})")
36public final class ParameterNode extends AbstractLocalNode implements IterableNodeType, UncheckedInterfaceProvider {
37
38    public static final NodeClass<ParameterNode> TYPE = NodeClass.create(ParameterNode.class);
39
40    private Stamp uncheckedStamp;
41
42    public ParameterNode(int index, StampPair stamp) {
43        super(TYPE, index, stamp.getTrustedStamp());
44        this.uncheckedStamp = stamp.getUncheckedStamp();
45    }
46
47    @Override
48    public Stamp uncheckedStamp() {
49        return uncheckedStamp;
50    }
51}
52