--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/phases/AheadOfTimeVerificationPhase.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,88 @@
+/*
+ * 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();
+    }
+}