--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases/src/org/graalvm/compiler/phases/verify/VerifyInstanceOfUsage.java	Mon Dec 10 16:49:54 2018 -0500
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,93 +0,0 @@
-/*
- * Copyright (c) 2017, 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.phases.verify;
-
-import org.graalvm.compiler.lir.StandardOp.LoadConstantOp;
-import org.graalvm.compiler.lir.StandardOp.MoveOp;
-import org.graalvm.compiler.lir.StandardOp.ValueMoveOp;
-import org.graalvm.compiler.nodes.StructuredGraph;
-import org.graalvm.compiler.nodes.java.InstanceOfNode;
-import org.graalvm.compiler.phases.VerifyPhase;
-import org.graalvm.compiler.phases.tiers.PhaseContext;
-
-import jdk.vm.ci.meta.MetaAccessProvider;
-import jdk.vm.ci.meta.ResolvedJavaMethod;
-import jdk.vm.ci.meta.ResolvedJavaType;
-
-/**
- * Checks that we do not use {@code instanceof} for types where faster alternatives are available.
- */
-public class VerifyInstanceOfUsage extends VerifyPhase<PhaseContext> {
-
-    private static final Class<?>[] FORBIDDEN_INSTANCE_OF_CHECKS = {
-                    MoveOp.class,
-                    ValueMoveOp.class,
-                    LoadConstantOp.class
-    };
-
-    @Override
-    public boolean checkContract() {
-        return false;
-    }
-
-    @Override
-    protected boolean verify(StructuredGraph graph, PhaseContext context) {
-        final ResolvedJavaType[] bailoutType = new ResolvedJavaType[FORBIDDEN_INSTANCE_OF_CHECKS.length];
-        for (int i = 0; i < FORBIDDEN_INSTANCE_OF_CHECKS.length; i++) {
-            bailoutType[i] = context.getMetaAccess().lookupJavaType(FORBIDDEN_INSTANCE_OF_CHECKS[i]);
-        }
-        ResolvedJavaMethod method = graph.method();
-        ResolvedJavaType declaringClass = method.getDeclaringClass();
-        if (!isTrustedInterface(declaringClass, context.getMetaAccess())) {
-
-            for (InstanceOfNode io : graph.getNodes().filter(InstanceOfNode.class)) {
-                ResolvedJavaType type = io.type().getType();
-                for (ResolvedJavaType forbiddenType : bailoutType) {
-                    if (forbiddenType.equals(type)) {
-                        String name = forbiddenType.getUnqualifiedName();
-                        // strip outer class
-                        ResolvedJavaType enclosingType = forbiddenType.getEnclosingType();
-                        if (enclosingType != null) {
-                            name = name.substring(enclosingType.getUnqualifiedName().length() + "$".length());
-                        }
-                        throw new VerificationError("Using `op instanceof %s` is not allowed. Use `%s.is%s(op)` instead. (in %s)", name, name, name, method.format("%H.%n(%p)"));
-                    }
-                }
-            }
-        }
-        return true;
-    }
-
-    private static boolean isTrustedInterface(ResolvedJavaType declaringClass, MetaAccessProvider metaAccess) {
-        for (Class<?> trustedCls : FORBIDDEN_INSTANCE_OF_CHECKS) {
-            ResolvedJavaType trusted = metaAccess.lookupJavaType(trustedCls);
-            if (trusted.equals(declaringClass)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-}