--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/ConditionalEliminationTest6.java	2016-12-09 00:47:30.114059271 -0800
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2015, 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.core.test;
+
+import org.junit.Test;
+
+/**
+ * Collection of tests for
+ * {@link org.graalvm.compiler.phases.common.DominatorConditionalEliminationPhase} including those
+ * that triggered bugs in this phase.
+ */
+public class ConditionalEliminationTest6 extends ConditionalEliminationTestBase {
+
+    public static final A constA = new A();
+    public static final B constB = new B();
+
+    static class A {
+    }
+
+    static class B {
+    }
+
+    @SuppressWarnings("all")
+    public static B reference1Snippet(Object a, B b) {
+        if (a == constA) {
+            return b;
+        }
+        return null;
+    }
+
+    @SuppressWarnings("all")
+    public static B test1Snippet(Object a, B b) {
+        if (a == constA) {
+            if (a == null) {
+                return null;
+            } else {
+                return b;
+            }
+        }
+        return null;
+    }
+
+    @Test
+    public void test1() {
+        testConditionalElimination("test1Snippet", "reference1Snippet");
+    }
+
+    @SuppressWarnings("all")
+    public static B test2Snippet(Object a, B b) {
+        if (a == constA) {
+            if (a == constB) {
+                return null;
+            } else {
+                return b;
+            }
+        }
+        return null;
+    }
+
+    @Test
+    public void test2() {
+        testConditionalElimination("test2Snippet", "reference1Snippet");
+    }
+
+    @SuppressWarnings("all")
+    public static B test3Snippet(Object a, B b) {
+        if (a == constA) {
+            if (a == b) {
+                return null;
+            } else {
+                return b;
+            }
+        }
+        return null;
+    }
+
+    @Test
+    public void test3() {
+        testConditionalElimination("test3Snippet", "reference1Snippet");
+    }
+}