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.hotspot.nodes; 24 25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_3; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_2; 27 28 import org.graalvm.compiler.core.common.type.StampFactory; 29 import org.graalvm.compiler.graph.NodeClass; 30 import org.graalvm.compiler.nodeinfo.NodeInfo; 31 import org.graalvm.compiler.nodes.FixedWithNextNode; 32 import org.graalvm.compiler.nodes.ValueNode; 33 import org.graalvm.compiler.nodes.debug.ControlFlowAnchored; 34 import org.graalvm.compiler.nodes.spi.Lowerable; 35 import org.graalvm.compiler.nodes.spi.LoweringTool; 36 37 import jdk.vm.ci.meta.JavaKind; 38 39 /** 40 * A high-level intrinsic for getting an address inside of an object. During lowering it will be 41 * moved next to any uses to avoid creating a derived pointer that is live across a safepoint. 42 */ 43 @NodeInfo(cycles = CYCLES_3, size = SIZE_2) 44 public final class ComputeObjectAddressNode extends FixedWithNextNode implements Lowerable, ControlFlowAnchored { 45 public static final NodeClass<ComputeObjectAddressNode> TYPE = NodeClass.create(ComputeObjectAddressNode.class); 46 47 @Input ValueNode object; 48 @Input ValueNode offset; 49 50 public ComputeObjectAddressNode(ValueNode obj, ValueNode offset) { 51 super(TYPE, StampFactory.forKind(JavaKind.Long)); 52 this.object = obj; 53 this.offset = offset; 54 } 55 56 @NodeIntrinsic 57 public static native long get(Object array, long offset); 58 59 @Override 60 public void lower(LoweringTool tool) { 61 tool.getLowerer().lower(this, tool); 62 } 63 64 public ValueNode getObject() { 65 return object; 66 } 67 68 public ValueNode getOffset() { 69 return offset; 70 } 71 }