--- /dev/null	2017-03-16 11:03:49.895616831 -0700
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.jtt/src/org/graalvm/compiler/jtt/optimize/Fold_Float03.java	2017-11-03 23:57:53.541449520 -0700
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2017, 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.jtt.optimize;
+
+import org.junit.Test;
+
+import org.graalvm.compiler.jtt.JTTTest;
+
+/*
+ * Tests constant folding of float operations.
+ */
+public class Fold_Float03 extends JTTTest {
+
+    // Contrived check whether both arguments are the same kind of zero
+    public static boolean test(float x, float y) {
+        if (x == 0) {
+            if (1 / x == Float.NEGATIVE_INFINITY) {
+                return 1 / y == Float.NEGATIVE_INFINITY;
+            } else {
+                return 1 / y == Float.POSITIVE_INFINITY;
+            }
+        }
+        return false;
+    }
+
+    @Test
+    public void run0() throws Throwable {
+        runTest("test", -0f, -0f);
+    }
+
+    @Test
+    public void run1() throws Throwable {
+        runTest("test", -0f, 0f);
+    }
+
+    @Test
+    public void run2() throws Throwable {
+        runTest("test", 0f, -0f);
+    }
+
+    @Test
+    public void run3() throws Throwable {
+        runTest("test", 0f, 0f);
+    }
+
+}