1 /* 2 * Copyright (c) 2012, 2016, 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.hotspot.nodes.aot; 24 25 import org.graalvm.compiler.core.common.type.StampFactory; 26 import org.graalvm.compiler.graph.Node; 27 import org.graalvm.compiler.graph.NodeClass; 28 import org.graalvm.compiler.graph.spi.Canonicalizable; 29 import org.graalvm.compiler.graph.spi.CanonicalizerTool; 30 import org.graalvm.compiler.hotspot.replacements.EncodedSymbolConstant; 31 import org.graalvm.compiler.nodeinfo.NodeInfo; 32 import org.graalvm.compiler.nodes.ConstantNode; 33 import org.graalvm.compiler.nodes.ValueNode; 34 import org.graalvm.compiler.nodes.calc.FloatingNode; 35 import org.graalvm.compiler.nodes.util.GraphUtil; 36 import org.graalvm.compiler.word.Word; 37 38 import jdk.vm.ci.meta.Constant; 39 40 @NodeInfo 41 public final class EncodedSymbolNode extends FloatingNode implements Canonicalizable { 42 43 public static final NodeClass<EncodedSymbolNode> TYPE = NodeClass.create(EncodedSymbolNode.class); 44 45 @OptionalInput protected ValueNode value; 46 47 public EncodedSymbolNode(ValueNode value) { 48 super(TYPE, null); 49 assert value != null; 50 this.value = value; 51 } 52 53 @Override 54 public Node canonical(CanonicalizerTool tool) { 55 if (value != null) { 56 Constant constant = GraphUtil.foldIfConstantAndRemove(this, value); 57 if (constant != null) { 58 return new ConstantNode(new EncodedSymbolConstant(constant), StampFactory.pointer()); 59 } 60 } 61 return this; 62 } 63 64 @NodeIntrinsic(setStampFromReturnType = true) 65 public static native Word encode(Object constant); 66 }