1 files changed, 63 insertions, 0 deletions
diff --git a/test/compiler/loopopts/ConstFPVectorization.java b/test/compiler/loopopts/ConstFPVectorization.java
new file mode 100644
index 000000000..50cb0e614
--- /dev/null
+++ b/test/compiler/loopopts/ConstFPVectorization.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 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.
+ *
+ */
+
+/**
+ * @test
+ * @bug 8074869
+ * @summary C2 code generator can replace -0.0f with +0.0f on Linux
+ * @run main ConstFPVectorization 8
+ * @author volker.simonis@gmail.com
+ *
+ */
+
+public class ConstFPVectorization {
+
+    static float[] f = new float[16];
+    static double[] d = new double[16];
+
+    static void floatLoop(int count) {
+        for (int i = 0; i < count; i++) {
+            f[i] = -0.0f;
+        }
+    }
+
+    static void doubleLoop(int count) {
+        for (int i = 0; i < count; i++) {
+            d[i] = -0.0d;
+        }
+    }
+
+    public static void main(String args[]) {
+        for (int i = 0; i < 10_000; i++) {
+            floatLoop(Integer.parseInt(args[0]));
+            doubleLoop(Integer.parseInt(args[0]));
+        }
+        for (int i = 0; i < Integer.parseInt(args[0]); i++) {
+            if (Float.floatToRawIntBits(f[i]) != Float.floatToRawIntBits(-0.0f))
+                throw new Error("Float error at index " + i);
+            if (Double.doubleToRawLongBits(d[i]) != Double.doubleToRawLongBits(-0.0d))
+                throw new Error("Double error at index " + i);
+        }
+    }
+}