1 /* 2 * Copyright (c) 2015, 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 */ 23 package org.graalvm.compiler.nodes; 24 25 import static org.graalvm.compiler.nodeinfo.InputType.Association; 26 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0; 27 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0; 28 29 import org.graalvm.compiler.graph.NodeClass; 30 import org.graalvm.compiler.nodeinfo.NodeInfo; 31 import org.graalvm.compiler.nodes.calc.FloatingNode; 32 import org.graalvm.compiler.nodes.extended.GuardingNode; 33 import org.graalvm.compiler.nodes.spi.ValueProxy; 34 35 /** 36 * Proxy node that is used in OSR. This node drops the stamp information from the value, since the 37 * types we see during OSR may be too precise (if a branch was not parsed for example). 38 */ 39 @NodeInfo(nameTemplate = "EntryProxy({i#value})", cycles = CYCLES_0, size = SIZE_0) 40 public final class EntryProxyNode extends FloatingNode implements ValueProxy { 41 42 public static final NodeClass<EntryProxyNode> TYPE = NodeClass.create(EntryProxyNode.class); 43 @Input(Association) EntryMarkerNode proxyPoint; 44 @Input ValueNode value; 45 46 public EntryProxyNode(ValueNode value, EntryMarkerNode proxyPoint) { 47 super(TYPE, value.stamp().unrestricted()); 48 this.value = value; 49 this.proxyPoint = proxyPoint; 50 } 51 52 public ValueNode value() { 53 return value; 54 } 55 56 @Override 57 public ValueNode getOriginalNode() { 58 return value(); 59 } 60 61 @Override 62 public GuardingNode getGuard() { 63 return proxyPoint; 64 } 65 }