--- /dev/null	2017-11-16 08:17:56.803999947 +0100
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/ConditionalEliminationTest16.java	2019-05-06 15:59:02.439390773 +0200
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2019, 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.core.test;
+
+import org.graalvm.compiler.api.directives.GraalDirectives;
+import org.graalvm.compiler.core.common.type.StampFactory;
+import org.graalvm.compiler.core.common.type.StampPair;
+import org.graalvm.compiler.core.common.type.TypeReference;
+import org.graalvm.compiler.nodes.ParameterNode;
+import org.graalvm.compiler.nodes.PiNode;
+import org.graalvm.compiler.nodes.StructuredGraph;
+import org.graalvm.compiler.phases.common.CanonicalizerPhase;
+import org.junit.Test;
+
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+
+/**
+ * Check that multiple bounds checks are correctly grouped together.
+ */
+public class ConditionalEliminationTest16 extends ConditionalEliminationTestBase {
+
+    public static int testCastExactInstance(Object object) {
+        if (object.getClass() == Integer.class) {
+            return ((Integer) object).intValue();
+        }
+        GraalDirectives.deoptimizeAndInvalidate();
+        return -1;
+    }
+
+    @Override
+    protected boolean checkHighTierGraph(StructuredGraph graph) {
+        for (ParameterNode param : graph.getNodes().filter(ParameterNode.class)) {
+            if (param.index() == 0) {
+                ParameterNode newParam = new ParameterNode(0, StampPair.createSingle(StampFactory.object(TypeReference.createExactTrusted(getMetaAccess().lookupJavaType(Integer.class)))));
+                graph.addWithoutUnique(newParam);
+                param.replaceAtUsages(newParam);
+                param.safeDelete();
+                break;
+            }
+        }
+        new CanonicalizerPhase().apply(graph, getDefaultHighTierContext());
+        return super.checkHighTierGraph(graph);
+    }
+
+    @Override
+    protected boolean checkMidTierGraph(StructuredGraph graph) {
+        int count = 0;
+        for (PiNode node : graph.getNodes().filter(PiNode.class)) {
+            assertTrue(node.getGuard() != null, "must have guarding node");
+            count++;
+        }
+        assertTrue(count > 0, "expected at least one Pi");
+        return super.checkMidTierGraph(graph);
+    }
+
+    @Test
+    public void test1() {
+        ResolvedJavaMethod method = getResolvedJavaMethod("testCastExactInstance");
+        StructuredGraph graph = parseForCompile(method);
+        compile(method, graph);
+    }
+}