| /* |
| * Copyright (c) 2014, 2014, 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.word; |
| |
| import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0; |
| import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0; |
| |
| import org.graalvm.compiler.core.common.type.Stamp; |
| import org.graalvm.compiler.graph.Node; |
| import org.graalvm.compiler.graph.NodeClass; |
| import org.graalvm.compiler.hotspot.word.HotSpotOperation.HotspotOpcode; |
| import org.graalvm.compiler.nodeinfo.NodeInfo; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.calc.FloatingNode; |
| import org.graalvm.compiler.nodes.spi.LIRLowerable; |
| import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; |
| |
| import jdk.vm.ci.meta.Value; |
| |
| /** |
| * Cast between Word and metaspace pointers exposed by the {@link HotspotOpcode#FROM_POINTER} and |
| * {@link HotspotOpcode#TO_KLASS_POINTER} operations. |
| */ |
| @NodeInfo(cycles = CYCLES_0, size = SIZE_0) |
| public final class PointerCastNode extends FloatingNode implements LIRLowerable, Node.ValueNumberable { |
| |
| public static final NodeClass<PointerCastNode> TYPE = NodeClass.create(PointerCastNode.class); |
| @Input ValueNode input; |
| |
| public PointerCastNode(Stamp stamp, ValueNode input) { |
| super(TYPE, stamp); |
| this.input = input; |
| } |
| |
| public ValueNode getInput() { |
| return input; |
| } |
| |
| @Override |
| public void generate(NodeLIRBuilderTool generator) { |
| Value value = generator.operand(input); |
| assert value.getValueKind().equals(generator.getLIRGeneratorTool().getLIRKind(stamp())) : "PointerCastNode shouldn't change the LIRKind"; |
| |
| generator.setResult(this, value); |
| } |
| } |