| /* |
| * Copyright (c) 2012, 2015, 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.hotspot.nodes; |
| |
| import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2; |
| import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1; |
| |
| import org.graalvm.compiler.api.replacements.Snippet; |
| import org.graalvm.compiler.core.common.LIRKind; |
| import org.graalvm.compiler.core.common.type.StampFactory; |
| import org.graalvm.compiler.graph.NodeClass; |
| import org.graalvm.compiler.nodeinfo.NodeInfo; |
| import org.graalvm.compiler.nodes.FixedWithNextNode; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.spi.LIRLowerable; |
| import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; |
| |
| import jdk.vm.ci.meta.AllocatableValue; |
| import jdk.vm.ci.meta.JavaKind; |
| |
| /** |
| * Intrinsification for getting the address of an object. The code path(s) between a call to |
| * {@link #get(Object)} and all uses of the returned value must not contain safepoints. This can |
| * only be guaranteed if used in a snippet that is instantiated after frame state assignment. |
| * {@link ComputeObjectAddressNode} should generally be used in preference to this node. |
| */ |
| @NodeInfo(cycles = CYCLES_2, size = SIZE_1) |
| public final class GetObjectAddressNode extends FixedWithNextNode implements LIRLowerable { |
| public static final NodeClass<GetObjectAddressNode> TYPE = NodeClass.create(GetObjectAddressNode.class); |
| |
| @Input ValueNode object; |
| |
| public GetObjectAddressNode(ValueNode obj) { |
| super(TYPE, StampFactory.forKind(JavaKind.Long)); |
| this.object = obj; |
| } |
| |
| @NodeIntrinsic |
| public static native long get(Object array); |
| |
| @Override |
| public void generate(NodeLIRBuilderTool gen) { |
| AllocatableValue obj = gen.getLIRGeneratorTool().newVariable(LIRKind.unknownReference(gen.getLIRGeneratorTool().target().arch.getWordKind())); |
| gen.getLIRGeneratorTool().emitMove(obj, gen.operand(object)); |
| gen.setResult(this, obj); |
| } |
| |
| @Override |
| public boolean verify() { |
| assert graph().getGuardsStage().areFrameStatesAtDeopts() || graph().method().getAnnotation(Snippet.class) != null : "GetObjectAddressNode can't be used directly until frame states are fixed"; |
| return super.verify(); |
| } |
| } |