| /* |
| * Copyright (c) 2013, 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.phases; |
| |
| import static org.graalvm.compiler.nodes.ConstantNode.getConstantNodes; |
| |
| import org.graalvm.compiler.nodes.ConstantNode; |
| import org.graalvm.compiler.nodes.StructuredGraph; |
| import org.graalvm.compiler.nodes.type.StampTool; |
| import org.graalvm.compiler.phases.VerifyPhase; |
| import org.graalvm.compiler.phases.tiers.PhaseContext; |
| |
| import jdk.vm.ci.hotspot.HotSpotObjectConstant; |
| import jdk.vm.ci.meta.JavaKind; |
| |
| /** |
| * Checks for {@link #isIllegalObjectConstant(ConstantNode) illegal} object constants in a graph |
| * processed for AOT compilation. |
| * |
| * @see LoadJavaMirrorWithKlassPhase |
| */ |
| public class AheadOfTimeVerificationPhase extends VerifyPhase<PhaseContext> { |
| |
| @Override |
| protected boolean verify(StructuredGraph graph, PhaseContext context) { |
| for (ConstantNode node : getConstantNodes(graph)) { |
| if (isIllegalObjectConstant(node)) { |
| throw new VerificationError("illegal object constant: " + node); |
| } |
| } |
| return true; |
| } |
| |
| public static boolean isIllegalObjectConstant(ConstantNode node) { |
| return isObject(node) && !isNullReference(node) && !isInternedString(node) && !isDirectMethodHandle(node) && !isBoundMethodHandle(node); |
| } |
| |
| private static boolean isObject(ConstantNode node) { |
| return node.getStackKind() == JavaKind.Object; |
| } |
| |
| private static boolean isNullReference(ConstantNode node) { |
| return isObject(node) && node.isNullConstant(); |
| } |
| |
| private static boolean isDirectMethodHandle(ConstantNode node) { |
| if (!isObject(node)) { |
| return false; |
| } |
| return "Ljava/lang/invoke/DirectMethodHandle;".equals(StampTool.typeOrNull(node).getName()); |
| } |
| |
| private static boolean isBoundMethodHandle(ConstantNode node) { |
| if (!isObject(node)) { |
| return false; |
| } |
| return StampTool.typeOrNull(node).getName().startsWith("Ljava/lang/invoke/BoundMethodHandle"); |
| } |
| |
| private static boolean isInternedString(ConstantNode node) { |
| if (!isObject(node)) { |
| return false; |
| } |
| |
| HotSpotObjectConstant c = (HotSpotObjectConstant) node.asConstant(); |
| return c.isInternedString(); |
| } |
| } |