| /* |
| * Copyright (c) 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.nodes.virtual; |
| |
| 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.core.common.type.StampFactory; |
| import org.graalvm.compiler.graph.Node; |
| import org.graalvm.compiler.graph.NodeClass; |
| import org.graalvm.compiler.graph.VerificationError; |
| import org.graalvm.compiler.nodeinfo.NodeInfo; |
| import org.graalvm.compiler.nodes.AbstractEndNode; |
| import org.graalvm.compiler.nodes.FixedNode; |
| import org.graalvm.compiler.nodes.FixedWithNextNode; |
| import org.graalvm.compiler.nodes.Invoke; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.java.StoreFieldNode; |
| import org.graalvm.compiler.nodes.spi.Lowerable; |
| import org.graalvm.compiler.nodes.spi.LoweringTool; |
| import org.graalvm.compiler.nodes.spi.Virtualizable; |
| import org.graalvm.compiler.nodes.spi.VirtualizerTool; |
| import org.graalvm.compiler.nodes.type.StampTool; |
| import org.graalvm.compiler.nodes.util.GraphUtil; |
| |
| @NodeInfo(cycles = CYCLES_0, size = SIZE_0) |
| public final class EnsureVirtualizedNode extends FixedWithNextNode implements Virtualizable, Lowerable { |
| |
| public static final NodeClass<EnsureVirtualizedNode> TYPE = NodeClass.create(EnsureVirtualizedNode.class); |
| |
| @Input ValueNode object; |
| private final boolean localOnly; |
| |
| public EnsureVirtualizedNode(ValueNode object, boolean localOnly) { |
| super(TYPE, StampFactory.forVoid()); |
| this.object = object; |
| this.localOnly = localOnly; |
| } |
| |
| @Override |
| public void virtualize(VirtualizerTool tool) { |
| ValueNode alias = tool.getAlias(object); |
| if (alias instanceof VirtualObjectNode) { |
| VirtualObjectNode virtual = (VirtualObjectNode) alias; |
| if (virtual instanceof VirtualBoxingNode) { |
| Throwable exception = new VerificationError("ensureVirtual is not valid for boxing objects: %s", virtual.type().getName()); |
| throw GraphUtil.approxSourceException(this, exception); |
| } |
| if (!localOnly) { |
| tool.setEnsureVirtualized(virtual, true); |
| } |
| tool.delete(); |
| } |
| } |
| |
| @Override |
| public void lower(LoweringTool tool) { |
| ensureVirtualFailure(this, object.stamp()); |
| } |
| |
| public static void ensureVirtualFailure(Node location, Stamp stamp) { |
| String additionalReason = ""; |
| if (location instanceof FixedWithNextNode && !(location instanceof EnsureVirtualizedNode)) { |
| FixedWithNextNode fixedWithNextNode = (FixedWithNextNode) location; |
| FixedNode next = fixedWithNextNode.next(); |
| if (next instanceof StoreFieldNode) { |
| additionalReason = " (must not store virtual object into a field)"; |
| } else if (next instanceof Invoke) { |
| additionalReason = " (must not pass virtual object into an invoke that cannot be inlined)"; |
| } else { |
| additionalReason = " (must not let virtual object escape at node " + next + ")"; |
| } |
| } |
| Throwable exception = new VerificationError("Object of type %s should not be materialized%s:", StampTool.typeOrNull(stamp).getName(), additionalReason); |
| |
| Node pos; |
| if (location instanceof FixedWithNextNode) { |
| pos = ((FixedWithNextNode) location).next(); |
| } else if (location instanceof AbstractEndNode) { |
| pos = ((AbstractEndNode) location).merge(); |
| } else { |
| pos = location; |
| } |
| throw GraphUtil.approxSourceException(pos, exception); |
| } |
| } |